Merge branch 'master' into down-integrate

33 files changed, 3583 insertions, 697 deletions

diff --git a/BUILD b/BUILD
index b786ff64..670295cf 100644
--- a/BUILD
+++ b/BUILD
@@ -253,7 +253,7 @@ internal_copied_filegroup(
     srcs = WELL_KNOWN_PROTOS,
     dest = "",
     strip_prefix = "src",
-    visibility = ["//visibility:hidden"],
+    visibility = ["//visibility:private"],
 )
 
 [proto_library(
@@ -843,6 +843,7 @@ proto_lang_toolchain(
     command_line = "--cpp_out=$(OUT)",
     runtime = ":protobuf",
     visibility = ["//visibility:public"],
+    blacklisted_protos = [":_internal_wkt_protos_genrule"],
 )
 
 proto_lang_toolchain(
diff --git a/cmake/README.md b/cmake/README.md
index 1e7410d8..305ebb88 100644
--- a/cmake/README.md
+++ b/cmake/README.md
@@ -302,6 +302,11 @@ further disable the option `-Dprotobuf_MSVC_STATIC_RUNTIME=OFF`.
 If it reports NOTFOUND for zlib_include or zlib_lib, you might haven't put
 the headers or the .lib file in the right directory.
 
+If you already have ZLIB library and headers at some other location on your system then alternatively you can define following configuration flags to locate them:
+
+	-DZLIB_INCLUDE_DIR=<path to dir containing zlib headers>
+	-DZLIB_LIB=<path to dir containing zlib>
+	
 Build and testing protobuf as usual.
 
 Notes on Compiler Warnings
diff --git a/configure.ac b/configure.ac
index faa1cdc3..4e3dc613 100644
--- a/configure.ac
+++ b/configure.ac
@@ -184,9 +184,8 @@ AS_IF([test "$with_protoc" != "no"], [
 ])
 AM_CONDITIONAL([USE_EXTERNAL_PROTOC], [test "$with_protoc" != "no"])
 
-ACX_PTHREAD
-AM_CONDITIONAL([HAVE_PTHREAD], [test "x$acx_pthread_ok" = "xyes"])
-
+AX_PTHREAD
+AM_CONDITIONAL([HAVE_PTHREAD], [test "x$ax_pthread_ok" = "xyes"])
 # We still keep this for improving pbconfig.h for unsupported platforms.
 AC_CXX_STL_HASH
 
diff --git a/js/binary/utils.js b/js/binary/utils.js
index 87570ff8..55a9ccd4 100644
--- a/js/binary/utils.js
+++ b/js/binary/utils.js
@@ -971,6 +971,10 @@ jspb.utils.byteSourceToUint8Array = function(data) {
     return /** @type {!Uint8Array} */(new Uint8Array(data));
   }
 
+  if (data.constructor === Buffer) {
+    return /** @type {!Uint8Array} */(new Uint8Array(data));
+  }
+
   if (data.constructor === Array) {
     data = /** @type {!Array<number>} */(data);
     return /** @type {!Uint8Array} */(new Uint8Array(data));
diff --git a/m4/acx_pthread.m4 b/m4/acx_pthread.m4
deleted file mode 100644
index 89d42c74..00000000
--- a/m4/acx_pthread.m4
+++ /dev/null
@@ -1,397 +0,0 @@
-# This was retrieved from
-#    http://svn.0pointer.de/viewvc/trunk/common/acx_pthread.m4?revision=1277&root=avahi
-# See also (perhaps for new versions?)
-#    http://svn.0pointer.de/viewvc/trunk/common/acx_pthread.m4?root=avahi
-#
-# We've rewritten the inconsistency check code (from avahi), to work
-# more broadly.  In particular, it no longer assumes ld accepts -zdefs.
-# This caused a restructing of the code, but the functionality has only
-# changed a little.
-
-dnl @synopsis ACX_PTHREAD([ACTION-IF-FOUND[, ACTION-IF-NOT-FOUND]])
-dnl
-dnl @summary figure out how to build C programs using POSIX threads
-dnl
-dnl This macro figures out how to build C programs using POSIX threads.
-dnl It sets the PTHREAD_LIBS output variable to the threads library and
-dnl linker flags, and the PTHREAD_CFLAGS output variable to any special
-dnl C compiler flags that are needed. (The user can also force certain
-dnl compiler flags/libs to be tested by setting these environment
-dnl variables.)
-dnl
-dnl Also sets PTHREAD_CC to any special C compiler that is needed for
-dnl multi-threaded programs (defaults to the value of CC otherwise).
-dnl (This is necessary on AIX to use the special cc_r compiler alias.)
-dnl
-dnl NOTE: You are assumed to not only compile your program with these
-dnl flags, but also link it with them as well. e.g. you should link
-dnl with $PTHREAD_CC $CFLAGS $PTHREAD_CFLAGS $LDFLAGS ... $PTHREAD_LIBS
-dnl $LIBS
-dnl
-dnl If you are only building threads programs, you may wish to use
-dnl these variables in your default LIBS, CFLAGS, and CC:
-dnl
-dnl        LIBS="$PTHREAD_LIBS $LIBS"
-dnl        CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
-dnl        CC="$PTHREAD_CC"
-dnl
-dnl In addition, if the PTHREAD_CREATE_JOINABLE thread-attribute
-dnl constant has a nonstandard name, defines PTHREAD_CREATE_JOINABLE to
-dnl that name (e.g. PTHREAD_CREATE_UNDETACHED on AIX).
-dnl
-dnl ACTION-IF-FOUND is a list of shell commands to run if a threads
-dnl library is found, and ACTION-IF-NOT-FOUND is a list of commands to
-dnl run it if it is not found. If ACTION-IF-FOUND is not specified, the
-dnl default action will define HAVE_PTHREAD.
-dnl
-dnl Please let the authors know if this macro fails on any platform, or
-dnl if you have any other suggestions or comments. This macro was based
-dnl on work by SGJ on autoconf scripts for FFTW (www.fftw.org) (with
-dnl help from M. Frigo), as well as ac_pthread and hb_pthread macros
-dnl posted by Alejandro Forero Cuervo to the autoconf macro repository.
-dnl We are also grateful for the helpful feedback of numerous users.
-dnl
-dnl @category InstalledPackages
-dnl @author Steven G. Johnson <stevenj@alum.mit.edu>
-dnl @version 2006-05-29
-dnl @license GPLWithACException
-dnl 
-dnl Checks for GCC shared/pthread inconsistency based on work by
-dnl Marcin Owsiany <marcin@owsiany.pl>
-
-
-AC_DEFUN([ACX_PTHREAD], [
-AC_REQUIRE([AC_CANONICAL_HOST])
-AC_LANG_SAVE
-AC_LANG_C
-acx_pthread_ok=no
-
-# We used to check for pthread.h first, but this fails if pthread.h
-# requires special compiler flags (e.g. on True64 or Sequent).
-# It gets checked for in the link test anyway.
-
-# First of all, check if the user has set any of the PTHREAD_LIBS,
-# etcetera environment variables, and if threads linking works using
-# them:
-if test x"$PTHREAD_LIBS$PTHREAD_CFLAGS" != x; then
-        save_CFLAGS="$CFLAGS"
-        CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
-        save_LIBS="$LIBS"
-        LIBS="$PTHREAD_LIBS $LIBS"
-        AC_MSG_CHECKING([for pthread_join in LIBS=$PTHREAD_LIBS with CFLAGS=$PTHREAD_CFLAGS])
-        AC_TRY_LINK_FUNC(pthread_join, acx_pthread_ok=yes)
-        AC_MSG_RESULT($acx_pthread_ok)
-        if test x"$acx_pthread_ok" = xno; then
-                PTHREAD_LIBS=""
-                PTHREAD_CFLAGS=""
-        fi
-        LIBS="$save_LIBS"
-        CFLAGS="$save_CFLAGS"
-fi
-
-# We must check for the threads library under a number of different
-# names; the ordering is very important because some systems
-# (e.g. DEC) have both -lpthread and -lpthreads, where one of the
-# libraries is broken (non-POSIX).
-
-# Create a list of thread flags to try.  Items starting with a "-" are
-# C compiler flags, and other items are library names, except for "none"
-# which indicates that we try without any flags at all, and "pthread-config"
-# which is a program returning the flags for the Pth emulation library.
-
-acx_pthread_flags="pthreads none -Kthread -kthread lthread -pthread -pthreads -mthreads pthread --thread-safe -mt pthread-config"
-
-# The ordering *is* (sometimes) important.  Some notes on the
-# individual items follow:
-
-# pthreads: AIX (must check this before -lpthread)
-# none: in case threads are in libc; should be tried before -Kthread and
-#       other compiler flags to prevent continual compiler warnings
-# -Kthread: Sequent (threads in libc, but -Kthread needed for pthread.h)
-# -kthread: FreeBSD kernel threads (preferred to -pthread since SMP-able)
-# lthread: LinuxThreads port on FreeBSD (also preferred to -pthread)
-# -pthread: Linux/gcc (kernel threads), BSD/gcc (userland threads)
-# -pthreads: Solaris/gcc
-# -mthreads: Mingw32/gcc, Lynx/gcc
-# -mt: Sun Workshop C (may only link SunOS threads [-lthread], but it
-#      doesn't hurt to check since this sometimes defines pthreads too;
-#      also defines -D_REENTRANT)
-#      ... -mt is also the pthreads flag for HP/aCC
-# pthread: Linux, etcetera
-# --thread-safe: KAI C++
-# pthread-config: use pthread-config program (for GNU Pth library)
-
-case "${host_cpu}-${host_os}" in
-        *solaris*)
-
-        # On Solaris (at least, for some versions), libc contains stubbed
-        # (non-functional) versions of the pthreads routines, so link-based
-        # tests will erroneously succeed.  (We need to link with -pthreads/-mt/
-        # -lpthread.)  (The stubs are missing pthread_cleanup_push, or rather
-        # a function called by this macro, so we could check for that, but
-        # who knows whether they'll stub that too in a future libc.)  So,
-        # we'll just look for -pthreads and -lpthread first:
-
-        acx_pthread_flags="-pthreads pthread -mt -pthread $acx_pthread_flags"
-        ;;
-esac
-
-if test x"$acx_pthread_ok" = xno; then
-for flag in $acx_pthread_flags; do
-
-        case $flag in
-                none)
-                AC_MSG_CHECKING([whether pthreads work without any flags])
-                ;;
-
-                -*)
-                AC_MSG_CHECKING([whether pthreads work with $flag])
-                PTHREAD_CFLAGS="$flag"
-                ;;
-
-		pthread-config)
-		AC_CHECK_PROG(acx_pthread_config, pthread-config, yes, no)
-		if test x"$acx_pthread_config" = xno; then continue; fi
-		PTHREAD_CFLAGS="`pthread-config --cflags`"
-		PTHREAD_LIBS="`pthread-config --ldflags` `pthread-config --libs`"
-		;;
-
-                *)
-                AC_MSG_CHECKING([for the pthreads library -l$flag])
-                PTHREAD_LIBS="-l$flag"
-                ;;
-        esac
-
-        save_LIBS="$LIBS"
-        save_CFLAGS="$CFLAGS"
-        LIBS="$PTHREAD_LIBS $LIBS"
-        CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
-
-        # Check for various functions.  We must include pthread.h,
-        # since some functions may be macros.  (On the Sequent, we
-        # need a special flag -Kthread to make this header compile.)
-        # We check for pthread_join because it is in -lpthread on IRIX
-        # while pthread_create is in libc.  We check for pthread_attr_init
-        # due to DEC craziness with -lpthreads.  We check for
-        # pthread_cleanup_push because it is one of the few pthread
-        # functions on Solaris that doesn't have a non-functional libc stub.
-        # We try pthread_create on general principles.
-        AC_TRY_LINK([#include <pthread.h>],
-                    [pthread_t th; pthread_join(th, 0);
-                     pthread_attr_init(0); pthread_cleanup_push(0, 0);
-                     pthread_create(0,0,0,0); pthread_cleanup_pop(0); ],
-                    [acx_pthread_ok=yes])
-
-        LIBS="$save_LIBS"
-        CFLAGS="$save_CFLAGS"
-
-        AC_MSG_RESULT($acx_pthread_ok)
-        if test "x$acx_pthread_ok" = xyes; then
-                break;
-        fi
-
-        PTHREAD_LIBS=""
-        PTHREAD_CFLAGS=""
-done
-fi
-
-# Various other checks:
-if test "x$acx_pthread_ok" = xyes; then
-        save_LIBS="$LIBS"
-        LIBS="$PTHREAD_LIBS $LIBS"
-        save_CFLAGS="$CFLAGS"
-        CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
-
-        # Detect AIX lossage: JOINABLE attribute is called UNDETACHED.
-	AC_MSG_CHECKING([for joinable pthread attribute])
-	attr_name=unknown
-	for attr in PTHREAD_CREATE_JOINABLE PTHREAD_CREATE_UNDETACHED; do
-	    AC_TRY_LINK([#include <pthread.h>], [int attr=$attr; return attr;],
-                        [attr_name=$attr; break])
-	done
-        AC_MSG_RESULT($attr_name)
-        if test "$attr_name" != PTHREAD_CREATE_JOINABLE; then
-            AC_DEFINE_UNQUOTED(PTHREAD_CREATE_JOINABLE, $attr_name,
-                               [Define to necessary symbol if this constant
-                                uses a non-standard name on your system.])
-        fi
-
-        AC_MSG_CHECKING([if more special flags are required for pthreads])
-        flag=no
-        case "${host_cpu}-${host_os}" in
-            *-aix* | *-freebsd* | *-darwin*) flag="-D_THREAD_SAFE";;
-            *solaris* | *-osf* | *-hpux*) flag="-D_REENTRANT";;
-        esac
-        AC_MSG_RESULT(${flag})
-        if test "x$flag" != xno; then
-            PTHREAD_CFLAGS="$flag $PTHREAD_CFLAGS"
-        fi
-
-        LIBS="$save_LIBS"
-        CFLAGS="$save_CFLAGS"
-        # More AIX lossage: must compile with xlc_r or cc_r
-	if test x"$GCC" != xyes; then
-          AC_CHECK_PROGS(PTHREAD_CC, xlc_r cc_r, ${CC})
-        else
-          PTHREAD_CC=$CC
-	fi
-
-	# The next part tries to detect GCC inconsistency with -shared on some
-	# architectures and systems. The problem is that in certain
-	# configurations, when -shared is specified, GCC "forgets" to
-	# internally use various flags which are still necessary.
-	
-	#
-	# Prepare the flags
-	#
-	save_CFLAGS="$CFLAGS"
-	save_LIBS="$LIBS"
-	save_CC="$CC"
-	
-	# Try with the flags determined by the earlier checks.
-	#
-	# -Wl,-z,defs forces link-time symbol resolution, so that the
-	# linking checks with -shared actually have any value
-	#
-	# FIXME: -fPIC is required for -shared on many architectures,
-	# so we specify it here, but the right way would probably be to
-	# properly detect whether it is actually required.
-	CFLAGS="-shared -fPIC -Wl,-z,defs $CFLAGS $PTHREAD_CFLAGS"
-	LIBS="$PTHREAD_LIBS $LIBS"
-	CC="$PTHREAD_CC"
-	
-	# In order not to create several levels of indentation, we test
-	# the value of "$done" until we find the cure or run out of ideas.
-	done="no"
-	
-	# First, make sure the CFLAGS we added are actually accepted by our
-	# compiler.  If not (and OS X's ld, for instance, does not accept -z),
-	# then we can't do this test.
-	if test x"$done" = xno; then
-	   AC_MSG_CHECKING([whether to check for GCC pthread/shared inconsistencies])
-	   AC_TRY_LINK(,, , [done=yes])
-	
-	   if test "x$done" = xyes ; then
-	      AC_MSG_RESULT([no])
-	   else
-	      AC_MSG_RESULT([yes])
-	   fi
-	fi
-	
-	if test x"$done" = xno; then
-	   AC_MSG_CHECKING([whether -pthread is sufficient with -shared])
-	   AC_TRY_LINK([#include <pthread.h>],
-	      [pthread_t th; pthread_join(th, 0);
-	      pthread_attr_init(0); pthread_cleanup_push(0, 0);
-	      pthread_create(0,0,0,0); pthread_cleanup_pop(0); ],
-	      [done=yes])
-	   
-	   if test "x$done" = xyes; then
-	      AC_MSG_RESULT([yes])
-	   else
-	      AC_MSG_RESULT([no])
-	   fi
-	fi
-	
-	#
-	# Linux gcc on some architectures such as mips/mipsel forgets
-	# about -lpthread
-	#
-	if test x"$done" = xno; then
-	   AC_MSG_CHECKING([whether -lpthread fixes that])
-	   LIBS="-lpthread $PTHREAD_LIBS $save_LIBS"
-	   AC_TRY_LINK([#include <pthread.h>],
-	      [pthread_t th; pthread_join(th, 0);
-	      pthread_attr_init(0); pthread_cleanup_push(0, 0);
-	      pthread_create(0,0,0,0); pthread_cleanup_pop(0); ],
-	      [done=yes])
-	
-	   if test "x$done" = xyes; then
-	      AC_MSG_RESULT([yes])
-	      PTHREAD_LIBS="-lpthread $PTHREAD_LIBS"
-	   else
-	      AC_MSG_RESULT([no])
-	   fi
-	fi
-	#
-	# FreeBSD 4.10 gcc forgets to use -lc_r instead of -lc
-	#
-	if test x"$done" = xno; then
-	   AC_MSG_CHECKING([whether -lc_r fixes that])
-	   LIBS="-lc_r $PTHREAD_LIBS $save_LIBS"
-	   AC_TRY_LINK([#include <pthread.h>],
-	       [pthread_t th; pthread_join(th, 0);
-	        pthread_attr_init(0); pthread_cleanup_push(0, 0);
-	        pthread_create(0,0,0,0); pthread_cleanup_pop(0); ],
-	       [done=yes])
-	
-	   if test "x$done" = xyes; then
-	      AC_MSG_RESULT([yes])
-	      PTHREAD_LIBS="-lc_r $PTHREAD_LIBS"
-	   else
-	      AC_MSG_RESULT([no])
-	   fi
-	fi
-	if test x"$done" = xno; then
-	   # OK, we have run out of ideas
-	   AC_MSG_WARN([Impossible to determine how to use pthreads with shared libraries])
-	
-	   # so it's not safe to assume that we may use pthreads
-	   acx_pthread_ok=no
-	fi
-	
-	AC_MSG_CHECKING([whether what we have so far is sufficient with -nostdlib])
-	CFLAGS="-nostdlib $CFLAGS"
-	# we need c with nostdlib
-	LIBS="$LIBS -lc"
-	AC_TRY_LINK([#include <pthread.h>],
-	      [pthread_t th; pthread_join(th, 0);
-	       pthread_attr_init(0); pthread_cleanup_push(0, 0);
-	       pthread_create(0,0,0,0); pthread_cleanup_pop(0); ],
-	      [done=yes],[done=no])
-
-	if test "x$done" = xyes; then
-	   AC_MSG_RESULT([yes])
-	else
-	   AC_MSG_RESULT([no])
-	fi
-	
-	if test x"$done" = xno; then
-	   AC_MSG_CHECKING([whether -lpthread saves the day])
-	   LIBS="-lpthread $LIBS"
-	   AC_TRY_LINK([#include <pthread.h>],
-	      [pthread_t th; pthread_join(th, 0);
-	       pthread_attr_init(0); pthread_cleanup_push(0, 0);
-	       pthread_create(0,0,0,0); pthread_cleanup_pop(0); ],
-	      [done=yes],[done=no])
-
-	   if test "x$done" = xyes; then
-	      AC_MSG_RESULT([yes])
-	      PTHREAD_LIBS="$PTHREAD_LIBS -lpthread"
-	   else
-	      AC_MSG_RESULT([no])
-	      AC_MSG_WARN([Impossible to determine how to use pthreads with shared libraries and -nostdlib])
-	   fi
-	fi
-
-	CFLAGS="$save_CFLAGS"
-	LIBS="$save_LIBS"
-	CC="$save_CC"
-else
-        PTHREAD_CC="$CC"
-fi
-
-AC_SUBST(PTHREAD_LIBS)
-AC_SUBST(PTHREAD_CFLAGS)
-AC_SUBST(PTHREAD_CC)
-
-# Finally, execute ACTION-IF-FOUND/ACTION-IF-NOT-FOUND:
-if test x"$acx_pthread_ok" = xyes; then
-        ifelse([$1],,AC_DEFINE(HAVE_PTHREAD,1,[Define if you have POSIX threads libraries and header files.]),[$1])
-        :
-else
-        acx_pthread_ok=no
-        $2
-fi
-AC_LANG_RESTORE
-])dnl ACX_PTHREAD
diff --git a/m4/ax_pthread.m4 b/m4/ax_pthread.m4
new file mode 100644
index 00000000..d218d1af
--- /dev/null
+++ b/m4/ax_pthread.m4
@@ -0,0 +1,485 @@
+# ===========================================================================
+#        http://www.gnu.org/software/autoconf-archive/ax_pthread.html
+# ===========================================================================
+#
+# SYNOPSIS
+#
+#   AX_PTHREAD([ACTION-IF-FOUND[, ACTION-IF-NOT-FOUND]])
+#
+# DESCRIPTION
+#
+#   This macro figures out how to build C programs using POSIX threads. It
+#   sets the PTHREAD_LIBS output variable to the threads library and linker
+#   flags, and the PTHREAD_CFLAGS output variable to any special C compiler
+#   flags that are needed. (The user can also force certain compiler
+#   flags/libs to be tested by setting these environment variables.)
+#
+#   Also sets PTHREAD_CC to any special C compiler that is needed for
+#   multi-threaded programs (defaults to the value of CC otherwise). (This
+#   is necessary on AIX to use the special cc_r compiler alias.)
+#
+#   NOTE: You are assumed to not only compile your program with these flags,
+#   but also to link with them as well. For example, you might link with
+#   $PTHREAD_CC $CFLAGS $PTHREAD_CFLAGS $LDFLAGS ... $PTHREAD_LIBS $LIBS
+#
+#   If you are only building threaded programs, you may wish to use these
+#   variables in your default LIBS, CFLAGS, and CC:
+#
+#     LIBS="$PTHREAD_LIBS $LIBS"
+#     CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
+#     CC="$PTHREAD_CC"
+#
+#   In addition, if the PTHREAD_CREATE_JOINABLE thread-attribute constant
+#   has a nonstandard name, this macro defines PTHREAD_CREATE_JOINABLE to
+#   that name (e.g. PTHREAD_CREATE_UNDETACHED on AIX).
+#
+#   Also HAVE_PTHREAD_PRIO_INHERIT is defined if pthread is found and the
+#   PTHREAD_PRIO_INHERIT symbol is defined when compiling with
+#   PTHREAD_CFLAGS.
+#
+#   ACTION-IF-FOUND is a list of shell commands to run if a threads library
+#   is found, and ACTION-IF-NOT-FOUND is a list of commands to run it if it
+#   is not found. If ACTION-IF-FOUND is not specified, the default action
+#   will define HAVE_PTHREAD.
+#
+#   Please let the authors know if this macro fails on any platform, or if
+#   you have any other suggestions or comments. This macro was based on work
+#   by SGJ on autoconf scripts for FFTW (http://www.fftw.org/) (with help
+#   from M. Frigo), as well as ac_pthread and hb_pthread macros posted by
+#   Alejandro Forero Cuervo to the autoconf macro repository. We are also
+#   grateful for the helpful feedback of numerous users.
+#
+#   Updated for Autoconf 2.68 by Daniel Richard G.
+#
+# LICENSE
+#
+#   Copyright (c) 2008 Steven G. Johnson <stevenj@alum.mit.edu>
+#   Copyright (c) 2011 Daniel Richard G. <skunk@iSKUNK.ORG>
+#
+#   This program is free software: you can redistribute it and/or modify it
+#   under the terms of the GNU General Public License as published by the
+#   Free Software Foundation, either version 3 of the License, or (at your
+#   option) any later version.
+#
+#   This program is distributed in the hope that it will be useful, but
+#   WITHOUT ANY WARRANTY; without even the implied warranty of
+#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
+#   Public License for more details.
+#
+#   You should have received a copy of the GNU General Public License along
+#   with this program. If not, see <http://www.gnu.org/licenses/>.
+#
+#   As a special exception, the respective Autoconf Macro's copyright owner
+#   gives unlimited permission to copy, distribute and modify the configure
+#   scripts that are the output of Autoconf when processing the Macro. You
+#   need not follow the terms of the GNU General Public License when using
+#   or distributing such scripts, even though portions of the text of the
+#   Macro appear in them. The GNU General Public License (GPL) does govern
+#   all other use of the material that constitutes the Autoconf Macro.
+#
+#   This special exception to the GPL applies to versions of the Autoconf
+#   Macro released by the Autoconf Archive. When you make and distribute a
+#   modified version of the Autoconf Macro, you may extend this special
+#   exception to the GPL to apply to your modified version as well.
+
+#serial 22
+
+AU_ALIAS([ACX_PTHREAD], [AX_PTHREAD])
+AC_DEFUN([AX_PTHREAD], [
+AC_REQUIRE([AC_CANONICAL_HOST])
+AC_REQUIRE([AC_PROG_CC])
+AC_REQUIRE([AC_PROG_SED])
+AC_LANG_PUSH([C])
+ax_pthread_ok=no
+
+# We used to check for pthread.h first, but this fails if pthread.h
+# requires special compiler flags (e.g. on Tru64 or Sequent).
+# It gets checked for in the link test anyway.
+
+# First of all, check if the user has set any of the PTHREAD_LIBS,
+# etcetera environment variables, and if threads linking works using
+# them:
+if test "x$PTHREAD_CFLAGS$PTHREAD_LIBS" != "x"; then
+	ax_pthread_save_CC="$CC"
+	ax_pthread_save_CFLAGS="$CFLAGS"
+	ax_pthread_save_LIBS="$LIBS"
+	AS_IF([test "x$PTHREAD_CC" != "x"], [CC="$PTHREAD_CC"])
+	CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
+	LIBS="$PTHREAD_LIBS $LIBS"
+	AC_MSG_CHECKING([for pthread_join using $CC $PTHREAD_CFLAGS $PTHREAD_LIBS])
+	AC_LINK_IFELSE([AC_LANG_CALL([], [pthread_join])], [ax_pthread_ok=yes])
+	AC_MSG_RESULT([$ax_pthread_ok])
+	if test "x$ax_pthread_ok" = "xno"; then
+		PTHREAD_LIBS=""
+		PTHREAD_CFLAGS=""
+	fi
+	CC="$ax_pthread_save_CC"
+	CFLAGS="$ax_pthread_save_CFLAGS"
+	LIBS="$ax_pthread_save_LIBS"
+fi
+
+# We must check for the threads library under a number of different
+# names; the ordering is very important because some systems
+# (e.g. DEC) have both -lpthread and -lpthreads, where one of the
+# libraries is broken (non-POSIX).
+
+# Create a list of thread flags to try.  Items starting with a "-" are
+# C compiler flags, and other items are library names, except for "none"
+# which indicates that we try without any flags at all, and "pthread-config"
+# which is a program returning the flags for the Pth emulation library.
+
+ax_pthread_flags="pthreads none -Kthread -pthread -pthreads -mthreads pthread --thread-safe -mt pthread-config"
+
+# The ordering *is* (sometimes) important.  Some notes on the
+# individual items follow:
+
+# pthreads: AIX (must check this before -lpthread)
+# none: in case threads are in libc; should be tried before -Kthread and
+#       other compiler flags to prevent continual compiler warnings
+# -Kthread: Sequent (threads in libc, but -Kthread needed for pthread.h)
+# -pthread: Linux/gcc (kernel threads), BSD/gcc (userland threads), Tru64
+#           (Note: HP C rejects this with "bad form for `-t' option")
+# -pthreads: Solaris/gcc (Note: HP C also rejects)
+# -mt: Sun Workshop C (may only link SunOS threads [-lthread], but it
+#      doesn't hurt to check since this sometimes defines pthreads and
+#      -D_REENTRANT too), HP C (must be checked before -lpthread, which
+#      is present but should not be used directly; and before -mthreads,
+#      because the compiler interprets this as "-mt" + "-hreads")
+# -mthreads: Mingw32/gcc, Lynx/gcc
+# pthread: Linux, etcetera
+# --thread-safe: KAI C++
+# pthread-config: use pthread-config program (for GNU Pth library)
+
+case $host_os in
+
+	freebsd*)
+
+	# -kthread: FreeBSD kernel threads (preferred to -pthread since SMP-able)
+	# lthread: LinuxThreads port on FreeBSD (also preferred to -pthread)
+
+	ax_pthread_flags="-kthread lthread $ax_pthread_flags"
+	;;
+
+	hpux*)
+
+	# From the cc(1) man page: "[-mt] Sets various -D flags to enable
+	# multi-threading and also sets -lpthread."
+
+	ax_pthread_flags="-mt -pthread pthread $ax_pthread_flags"
+	;;
+
+	openedition*)
+
+	# IBM z/OS requires a feature-test macro to be defined in order to
+	# enable POSIX threads at all, so give the user a hint if this is
+	# not set. (We don't define these ourselves, as they can affect
+	# other portions of the system API in unpredictable ways.)
+
+	AC_EGREP_CPP([AX_PTHREAD_ZOS_MISSING],
+	    [
+#	     if !defined(_OPEN_THREADS) && !defined(_UNIX03_THREADS)
+	     AX_PTHREAD_ZOS_MISSING
+#	     endif
+	    ],
+	    [AC_MSG_WARN([IBM z/OS requires -D_OPEN_THREADS or -D_UNIX03_THREADS to enable pthreads support.])])
+	;;
+
+	solaris*)
+
+	# On Solaris (at least, for some versions), libc contains stubbed
+	# (non-functional) versions of the pthreads routines, so link-based
+	# tests will erroneously succeed. (N.B.: The stubs are missing
+	# pthread_cleanup_push, or rather a function called by this macro,
+	# so we could check for that, but who knows whether they'll stub
+	# that too in a future libc.)  So we'll check first for the
+	# standard Solaris way of linking pthreads (-mt -lpthread).
+
+	ax_pthread_flags="-mt,pthread pthread $ax_pthread_flags"
+	;;
+esac
+
+# GCC generally uses -pthread, or -pthreads on some platforms (e.g. SPARC)
+
+AS_IF([test "x$GCC" = "xyes"],
+      [ax_pthread_flags="-pthread -pthreads $ax_pthread_flags"])
+
+# The presence of a feature test macro requesting re-entrant function
+# definitions is, on some systems, a strong hint that pthreads support is
+# correctly enabled
+
+case $host_os in
+	darwin* | hpux* | linux* | osf* | solaris*)
+	ax_pthread_check_macro="_REENTRANT"
+	;;
+
+	aix* | freebsd*)
+	ax_pthread_check_macro="_THREAD_SAFE"
+	;;
+
+	*)
+	ax_pthread_check_macro="--"
+	;;
+esac
+AS_IF([test "x$ax_pthread_check_macro" = "x--"],
+      [ax_pthread_check_cond=0],
+      [ax_pthread_check_cond="!defined($ax_pthread_check_macro)"])
+
+# Are we compiling with Clang?
+
+AC_CACHE_CHECK([whether $CC is Clang],
+    [ax_cv_PTHREAD_CLANG],
+    [ax_cv_PTHREAD_CLANG=no
+     # Note that Autoconf sets GCC=yes for Clang as well as GCC
+     if test "x$GCC" = "xyes"; then
+	AC_EGREP_CPP([AX_PTHREAD_CC_IS_CLANG],
+	    [/* Note: Clang 2.7 lacks __clang_[a-z]+__ */
+#	     if defined(__clang__) && defined(__llvm__)
+	     AX_PTHREAD_CC_IS_CLANG
+#	     endif
+	    ],
+	    [ax_cv_PTHREAD_CLANG=yes])
+     fi
+    ])
+ax_pthread_clang="$ax_cv_PTHREAD_CLANG"
+
+ax_pthread_clang_warning=no
+
+# Clang needs special handling, because older versions handle the -pthread
+# option in a rather... idiosyncratic way
+
+if test "x$ax_pthread_clang" = "xyes"; then
+
+	# Clang takes -pthread; it has never supported any other flag
+
+	# (Note 1: This will need to be revisited if a system that Clang
+	# supports has POSIX threads in a separate library.  This tends not
+	# to be the way of modern systems, but it's conceivable.)
+
+	# (Note 2: On some systems, notably Darwin, -pthread is not needed
+	# to get POSIX threads support; the API is always present and
+	# active.  We could reasonably leave PTHREAD_CFLAGS empty.  But
+	# -pthread does define _REENTRANT, and while the Darwin headers
+	# ignore this macro, third-party headers might not.)
+
+	PTHREAD_CFLAGS="-pthread"
+	PTHREAD_LIBS=
+
+	ax_pthread_ok=yes
+
+	# However, older versions of Clang make a point of warning the user
+	# that, in an invocation where only linking and no compilation is
+	# taking place, the -pthread option has no effect ("argument unused
+	# during compilation").  They expect -pthread to be passed in only
+	# when source code is being compiled.
+	#
+	# Problem is, this is at odds with the way Automake and most other
+	# C build frameworks function, which is that the same flags used in
+	# compilation (CFLAGS) are also used in linking.  Many systems
+	# supported by AX_PTHREAD require exactly this for POSIX threads
+	# support, and in fact it is often not straightforward to specify a
+	# flag that is used only in the compilation phase and not in
+	# linking.  Such a scenario is extremely rare in practice.
+	#
+	# Even though use of the -pthread flag in linking would only print
+	# a warning, this can be a nuisance for well-run software projects
+	# that build with -Werror.  So if the active version of Clang has
+	# this misfeature, we search for an option to squash it.
+
+	AC_CACHE_CHECK([whether Clang needs flag to prevent "argument unused" warning when linking with -pthread],
+	    [ax_cv_PTHREAD_CLANG_NO_WARN_FLAG],
+	    [ax_cv_PTHREAD_CLANG_NO_WARN_FLAG=unknown
+	     # Create an alternate version of $ac_link that compiles and
+	     # links in two steps (.c -> .o, .o -> exe) instead of one
+	     # (.c -> exe), because the warning occurs only in the second
+	     # step
+	     ax_pthread_save_ac_link="$ac_link"
+	     ax_pthread_sed='s/conftest\.\$ac_ext/conftest.$ac_objext/g'
+	     ax_pthread_link_step=`$as_echo "$ac_link" | sed "$ax_pthread_sed"`
+	     ax_pthread_2step_ac_link="($ac_compile) && (echo ==== >&5) && ($ax_pthread_link_step)"
+	     ax_pthread_save_CFLAGS="$CFLAGS"
+	     for ax_pthread_try in '' -Qunused-arguments -Wno-unused-command-line-argument unknown; do
+		AS_IF([test "x$ax_pthread_try" = "xunknown"], [break])
+		CFLAGS="-Werror -Wunknown-warning-option $ax_pthread_try -pthread $ax_pthread_save_CFLAGS"
+		ac_link="$ax_pthread_save_ac_link"
+		AC_LINK_IFELSE([AC_LANG_SOURCE([[int main(void){return 0;}]])],
+		    [ac_link="$ax_pthread_2step_ac_link"
+		     AC_LINK_IFELSE([AC_LANG_SOURCE([[int main(void){return 0;}]])],
+			 [break])
+		    ])
+	     done
+	     ac_link="$ax_pthread_save_ac_link"
+	     CFLAGS="$ax_pthread_save_CFLAGS"
+	     AS_IF([test "x$ax_pthread_try" = "x"], [ax_pthread_try=no])
+	     ax_cv_PTHREAD_CLANG_NO_WARN_FLAG="$ax_pthread_try"
+	    ])
+
+	case "$ax_cv_PTHREAD_CLANG_NO_WARN_FLAG" in
+		no | unknown) ;;
+		*) PTHREAD_CFLAGS="$ax_cv_PTHREAD_CLANG_NO_WARN_FLAG $PTHREAD_CFLAGS" ;;
+	esac
+
+fi # $ax_pthread_clang = yes
+
+if test "x$ax_pthread_ok" = "xno"; then
+for ax_pthread_try_flag in $ax_pthread_flags; do
+
+	case $ax_pthread_try_flag in
+		none)
+		AC_MSG_CHECKING([whether pthreads work without any flags])
+		;;
+
+		-mt,pthread)
+		AC_MSG_CHECKING([whether pthreads work with -mt -lpthread])
+		PTHREAD_CFLAGS="-mt"
+		PTHREAD_LIBS="-lpthread"
+		;;
+
+		-*)
+		AC_MSG_CHECKING([whether pthreads work with $ax_pthread_try_flag])
+		PTHREAD_CFLAGS="$ax_pthread_try_flag"
+		;;
+
+		pthread-config)
+		AC_CHECK_PROG([ax_pthread_config], [pthread-config], [yes], [no])
+		AS_IF([test "x$ax_pthread_config" = "xno"], [continue])
+		PTHREAD_CFLAGS="`pthread-config --cflags`"
+		PTHREAD_LIBS="`pthread-config --ldflags` `pthread-config --libs`"
+		;;
+
+		*)
+		AC_MSG_CHECKING([for the pthreads library -l$ax_pthread_try_flag])
+		PTHREAD_LIBS="-l$ax_pthread_try_flag"
+		;;
+	esac
+
+	ax_pthread_save_CFLAGS="$CFLAGS"
+	ax_pthread_save_LIBS="$LIBS"
+	CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
+	LIBS="$PTHREAD_LIBS $LIBS"
+
+	# Check for various functions.  We must include pthread.h,
+	# since some functions may be macros.  (On the Sequent, we
+	# need a special flag -Kthread to make this header compile.)
+	# We check for pthread_join because it is in -lpthread on IRIX
+	# while pthread_create is in libc.  We check for pthread_attr_init
+	# due to DEC craziness with -lpthreads.  We check for
+	# pthread_cleanup_push because it is one of the few pthread
+	# functions on Solaris that doesn't have a non-functional libc stub.
+	# We try pthread_create on general principles.
+
+	AC_LINK_IFELSE([AC_LANG_PROGRAM([#include <pthread.h>
+#			if $ax_pthread_check_cond
+#			 error "$ax_pthread_check_macro must be defined"
+#			endif
+			static void routine(void *a) { a = 0; }
+			static void *start_routine(void *a) { return a; }],
+		       [pthread_t th; pthread_attr_t attr;
+			pthread_create(&th, 0, start_routine, 0);
+			pthread_join(th, 0);
+			pthread_attr_init(&attr);
+			pthread_cleanup_push(routine, 0);
+			pthread_cleanup_pop(0) /* ; */])],
+	    [ax_pthread_ok=yes],
+	    [])
+
+	CFLAGS="$ax_pthread_save_CFLAGS"
+	LIBS="$ax_pthread_save_LIBS"
+
+	AC_MSG_RESULT([$ax_pthread_ok])
+	AS_IF([test "x$ax_pthread_ok" = "xyes"], [break])
+
+	PTHREAD_LIBS=""
+	PTHREAD_CFLAGS=""
+done
+fi
+
+# Various other checks:
+if test "x$ax_pthread_ok" = "xyes"; then
+	ax_pthread_save_CFLAGS="$CFLAGS"
+	ax_pthread_save_LIBS="$LIBS"
+	CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
+	LIBS="$PTHREAD_LIBS $LIBS"
+
+	# Detect AIX lossage: JOINABLE attribute is called UNDETACHED.
+	AC_CACHE_CHECK([for joinable pthread attribute],
+	    [ax_cv_PTHREAD_JOINABLE_ATTR],
+	    [ax_cv_PTHREAD_JOINABLE_ATTR=unknown
+	     for ax_pthread_attr in PTHREAD_CREATE_JOINABLE PTHREAD_CREATE_UNDETACHED; do
+		 AC_LINK_IFELSE([AC_LANG_PROGRAM([#include <pthread.h>],
+						 [int attr = $ax_pthread_attr; return attr /* ; */])],
+				[ax_cv_PTHREAD_JOINABLE_ATTR=$ax_pthread_attr; break],
+				[])
+	     done
+	    ])
+	AS_IF([test "x$ax_cv_PTHREAD_JOINABLE_ATTR" != "xunknown" && \
+	       test "x$ax_cv_PTHREAD_JOINABLE_ATTR" != "xPTHREAD_CREATE_JOINABLE" && \
+	       test "x$ax_pthread_joinable_attr_defined" != "xyes"],
+	      [AC_DEFINE_UNQUOTED([PTHREAD_CREATE_JOINABLE],
+				  [$ax_cv_PTHREAD_JOINABLE_ATTR],
+				  [Define to necessary symbol if this constant
+				   uses a non-standard name on your system.])
+	       ax_pthread_joinable_attr_defined=yes
+	      ])
+
+	AC_CACHE_CHECK([whether more special flags are required for pthreads],
+	    [ax_cv_PTHREAD_SPECIAL_FLAGS],
+	    [ax_cv_PTHREAD_SPECIAL_FLAGS=no
+	     case $host_os in
+	     solaris*)
+	     ax_cv_PTHREAD_SPECIAL_FLAGS="-D_POSIX_PTHREAD_SEMANTICS"
+	     ;;
+	     esac
+	    ])
+	AS_IF([test "x$ax_cv_PTHREAD_SPECIAL_FLAGS" != "xno" && \
+	       test "x$ax_pthread_special_flags_added" != "xyes"],
+	      [PTHREAD_CFLAGS="$ax_cv_PTHREAD_SPECIAL_FLAGS $PTHREAD_CFLAGS"
+	       ax_pthread_special_flags_added=yes])
+
+	AC_CACHE_CHECK([for PTHREAD_PRIO_INHERIT],
+	    [ax_cv_PTHREAD_PRIO_INHERIT],
+	    [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <pthread.h>]],
+					     [[int i = PTHREAD_PRIO_INHERIT;]])],
+			    [ax_cv_PTHREAD_PRIO_INHERIT=yes],
+			    [ax_cv_PTHREAD_PRIO_INHERIT=no])
+	    ])
+	AS_IF([test "x$ax_cv_PTHREAD_PRIO_INHERIT" = "xyes" && \
+	       test "x$ax_pthread_prio_inherit_defined" != "xyes"],
+	      [AC_DEFINE([HAVE_PTHREAD_PRIO_INHERIT], [1], [Have PTHREAD_PRIO_INHERIT.])
+	       ax_pthread_prio_inherit_defined=yes
+	      ])
+
+	CFLAGS="$ax_pthread_save_CFLAGS"
+	LIBS="$ax_pthread_save_LIBS"
+
+	# More AIX lossage: compile with *_r variant
+	if test "x$GCC" != "xyes"; then
+	    case $host_os in
+		aix*)
+		AS_CASE(["x/$CC"],
+		    [x*/c89|x*/c89_128|x*/c99|x*/c99_128|x*/cc|x*/cc128|x*/xlc|x*/xlc_v6|x*/xlc128|x*/xlc128_v6],
+		    [#handle absolute path differently from PATH based program lookup
+		     AS_CASE(["x$CC"],
+			 [x/*],
+			 [AS_IF([AS_EXECUTABLE_P([${CC}_r])],[PTHREAD_CC="${CC}_r"])],
+			 [AC_CHECK_PROGS([PTHREAD_CC],[${CC}_r],[$CC])])])
+		;;
+	    esac
+	fi
+fi
+
+test -n "$PTHREAD_CC" || PTHREAD_CC="$CC"
+
+AC_SUBST([PTHREAD_LIBS])
+AC_SUBST([PTHREAD_CFLAGS])
+AC_SUBST([PTHREAD_CC])
+
+# Finally, execute ACTION-IF-FOUND/ACTION-IF-NOT-FOUND:
+if test "x$ax_pthread_ok" = "xyes"; then
+	ifelse([$1],,[AC_DEFINE([HAVE_PTHREAD],[1],[Define if you have POSIX threads libraries and header files.])],[$1])
+	:
+else
+	ax_pthread_ok=no
+	$2
+fi
+AC_LANG_POP
+])dnl AX_PTHREAD
diff --git a/php/ext/google/protobuf/encode_decode.c b/php/ext/google/protobuf/encode_decode.c
index b98121bb..a8c47f4d 100644
--- a/php/ext/google/protobuf/encode_decode.c
+++ b/php/ext/google/protobuf/encode_decode.c
@@ -484,11 +484,11 @@ static void map_slot_init(void* memory, upb_fieldtype_t type, zval* cache) {
       // Store zval** in memory in order to be consistent with the layout of
       // singular fields.
       zval** holder = ALLOC(zval*);
+      *(zval***)memory = holder;
       zval* tmp;
       MAKE_STD_ZVAL(tmp);
       PHP_PROTO_ZVAL_STRINGL(tmp, "", 0, 1);
       *holder = tmp;
-      *(zval***)memory = holder;
 #else
       *(zval**)memory = cache;
       PHP_PROTO_ZVAL_STRINGL(*(zval**)memory, "", 0, 1);
@@ -521,7 +521,7 @@ static void map_slot_uninit(void* memory, upb_fieldtype_t type) {
     case UPB_TYPE_BYTES: {
 #if PHP_MAJOR_VERSION < 7
       zval** holder = *(zval***)memory;
-      php_proto_zval_ptr_dtor(*holder);
+      zval_ptr_dtor(holder);
       FREE(holder);
 #else
       php_proto_zval_ptr_dtor(*(zval**)memory);
@@ -1621,6 +1621,7 @@ static void discard_unknown_fields(MessageHeader* msg) {
   stringsink* unknown = DEREF(message_data(msg), 0, stringsink*);
   if (unknown != NULL) {
     stringsink_uninit(unknown);
+    FREE(unknown);
     DEREF(message_data(msg), 0, stringsink*) = NULL;
   }
 
diff --git a/php/ext/google/protobuf/map.c b/php/ext/google/protobuf/map.c
index 2680b547..ab8a518a 100644
--- a/php/ext/google/protobuf/map.c
+++ b/php/ext/google/protobuf/map.c
@@ -293,13 +293,46 @@ static bool map_field_read_dimension(zval *object, zval *key, int type,
   }
 }
 
+static bool map_index_unset(Map *intern, const char* keyval, int length) {
+  upb_value old_value;
+  if (upb_strtable_remove2(&intern->table, keyval, length, &old_value)) {
+    switch (intern->value_type) {
+      case UPB_TYPE_MESSAGE: {
+#if PHP_MAJOR_VERSION < 7
+        zval_ptr_dtor(upb_value_memory(&old_value));
+#else
+        zend_object* object = *(zend_object**)upb_value_memory(&old_value);
+        if(--GC_REFCOUNT(object) == 0) {
+          zend_objects_store_del(object);
+        }
+#endif
+        break;
+      }
+      case UPB_TYPE_STRING:
+      case UPB_TYPE_BYTES: {
+#if PHP_MAJOR_VERSION < 7
+        zval_ptr_dtor(upb_value_memory(&old_value));
+#else
+        zend_string* object = *(zend_string**)upb_value_memory(&old_value);
+        zend_string_release(object);
+#endif
+        break;
+      }
+      default:
+        break;
+    }
+  }
+}
+
 bool map_index_set(Map *intern, const char* keyval, int length, upb_value v) {
   // Replace any existing value by issuing a 'remove' operation first.
-  upb_strtable_remove2(&intern->table, keyval, length, NULL);
+  map_index_unset(intern, keyval, length);
+
   if (!upb_strtable_insert2(&intern->table, keyval, length, v)) {
     zend_error(E_USER_ERROR, "Could not insert into table");
     return false;
   }
+
   return true;
 }
 
@@ -326,12 +359,7 @@ static void map_field_write_dimension(zval *object, zval *key,
   v.ctype = UPB_CTYPE_UINT64;
 #endif
 
-  // Replace any existing value by issuing a 'remove' operation first.
-  upb_strtable_remove2(&intern->table, keyval, length, NULL);
-  if (!upb_strtable_insert2(&intern->table, keyval, length, v)) {
-    zend_error(E_USER_ERROR, "Could not insert into table");
-    return;
-  }
+  map_index_set(intern, keyval, length, v);
 }
 
 static bool map_field_unset_dimension(zval *object, zval *key TSRMLS_DC) {
@@ -348,7 +376,7 @@ static bool map_field_unset_dimension(zval *object, zval *key TSRMLS_DC) {
   v.ctype = UPB_CTYPE_UINT64;
 #endif
 
-  upb_strtable_remove2(&intern->table, keyval, length, &v);
+  map_index_unset(intern, keyval, length);
 
   return true;
 }
diff --git a/php/ext/google/protobuf/message.c b/php/ext/google/protobuf/message.c
index 24472682..4c68c391 100644
--- a/php/ext/google/protobuf/message.c
+++ b/php/ext/google/protobuf/message.c
@@ -292,7 +292,9 @@ PHP_METHOD(Message, clear) {
   Descriptor* desc = msg->descriptor;
   zend_class_entry* ce = desc->klass;
 
+  zend_object_std_dtor(&msg->std TSRMLS_CC);
   object_properties_init(&msg->std, ce);
+
   layout_init(desc->layout, message_data(msg), &msg->std TSRMLS_CC);
 }
 
@@ -445,8 +447,7 @@ static void init_file_wrappers(TSRMLS_D);
 
 // Define file init functions
 static void init_file_any(TSRMLS_D) {
-  static bool is_initialized = false;
-  if (is_initialized) return;
+  if (is_inited_file_any) return;
   init_generated_pool_once(TSRMLS_C);
   const char* generated_file =
       "0acd010a19676f6f676c652f70726f746f6275662f616e792e70726f746f"
@@ -461,12 +462,11 @@ static void init_file_any(TSRMLS_D) {
   hex_to_binary(generated_file, &binary, &binary_len);
   internal_add_generated_file(binary, binary_len, generated_pool TSRMLS_CC);
   FREE(binary);
-  is_initialized = true;
+  is_inited_file_any = true;
 }
 
 static void init_file_api(TSRMLS_D) {
-  static bool is_initialized = false;
-  if (is_initialized) return;
+  if (is_inited_file_api) return;
   init_file_source_context(TSRMLS_C);
   init_file_type(TSRMLS_C);
   init_generated_pool_once(TSRMLS_C);
@@ -502,12 +502,11 @@ static void init_file_api(TSRMLS_D) {
   hex_to_binary(generated_file, &binary, &binary_len);
   internal_add_generated_file(binary, binary_len, generated_pool TSRMLS_CC);
   FREE(binary);
-  is_initialized = true;
+  is_inited_file_api = true;
 }
 
 static void init_file_duration(TSRMLS_D) {
-  static bool is_initialized = false;
-  if (is_initialized) return;
+  if (is_inited_file_duration) return;
   init_generated_pool_once(TSRMLS_C);
   const char* generated_file =
       "0ae3010a1e676f6f676c652f70726f746f6275662f6475726174696f6e2e"
@@ -523,12 +522,11 @@ static void init_file_duration(TSRMLS_D) {
   hex_to_binary(generated_file, &binary, &binary_len);
   internal_add_generated_file(binary, binary_len, generated_pool TSRMLS_CC);
   FREE(binary);
-  is_initialized = true;
+  is_inited_file_duration = true;
 }
 
 static void init_file_field_mask(TSRMLS_D) {
-  static bool is_initialized = false;
-  if (is_initialized) return;
+  if (is_inited_file_field_mask) return;
   init_generated_pool_once(TSRMLS_C);
   const char* generated_file =
       "0ae3010a20676f6f676c652f70726f746f6275662f6669656c645f6d6173"
@@ -544,12 +542,11 @@ static void init_file_field_mask(TSRMLS_D) {
   hex_to_binary(generated_file, &binary, &binary_len);
   internal_add_generated_file(binary, binary_len, generated_pool TSRMLS_CC);
   FREE(binary);
-  is_initialized = true;
+  is_inited_file_field_mask = true;
 }
 
 static void init_file_empty(TSRMLS_D) {
-  static bool is_initialized = false;
-  if (is_initialized) return;
+  if (is_inited_file_empty) return;
   init_generated_pool_once(TSRMLS_C);
   const char* generated_file =
       "0ab7010a1b676f6f676c652f70726f746f6275662f656d7074792e70726f"
@@ -564,12 +561,11 @@ static void init_file_empty(TSRMLS_D) {
   hex_to_binary(generated_file, &binary, &binary_len);
   internal_add_generated_file(binary, binary_len, generated_pool TSRMLS_CC);
   FREE(binary);
-  is_initialized = true;
+  is_inited_file_empty = true;
 }
 
 static void init_file_source_context(TSRMLS_D) {
-  static bool is_initialized = false;
-  if (is_initialized) return;
+  if (is_inited_file_source_context) return;
   init_generated_pool_once(TSRMLS_C);
   const char* generated_file =
       "0afb010a24676f6f676c652f70726f746f6275662f736f757263655f636f"
@@ -586,12 +582,11 @@ static void init_file_source_context(TSRMLS_D) {
   hex_to_binary(generated_file, &binary, &binary_len);
   internal_add_generated_file(binary, binary_len, generated_pool TSRMLS_CC);
   FREE(binary);
-  is_initialized = true;
+  is_inited_file_source_context = true;
 }
 
 static void init_file_struct(TSRMLS_D) {
-  static bool is_initialized = false;
-  if (is_initialized) return;
+  if (is_inited_file_struct) return;
   init_generated_pool_once(TSRMLS_C);
   const char* generated_file =
       "0a81050a1c676f6f676c652f70726f746f6275662f7374727563742e7072"
@@ -621,12 +616,11 @@ static void init_file_struct(TSRMLS_D) {
   hex_to_binary(generated_file, &binary, &binary_len);
   internal_add_generated_file(binary, binary_len, generated_pool TSRMLS_CC);
   FREE(binary);
-  is_initialized = true;
+  is_inited_file_struct = true;
 }
 
 static void init_file_timestamp(TSRMLS_D) {
-  static bool is_initialized = false;
-  if (is_initialized) return;
+  if (is_inited_file_timestamp) return;
   init_generated_pool_once(TSRMLS_C);
   const char* generated_file =
       "0ae7010a1f676f6f676c652f70726f746f6275662f74696d657374616d70"
@@ -642,12 +636,11 @@ static void init_file_timestamp(TSRMLS_D) {
   hex_to_binary(generated_file, &binary, &binary_len);
   internal_add_generated_file(binary, binary_len, generated_pool TSRMLS_CC);
   FREE(binary);
-  is_initialized = true;
+  is_inited_file_timestamp = true;
 }
 
 static void init_file_type(TSRMLS_D) {
-  static bool is_initialized = false;
-  if (is_initialized) return;
+  if (is_inited_file_type) return;
   init_file_any(TSRMLS_C);
   init_file_source_context(TSRMLS_C);
   init_generated_pool_once(TSRMLS_C);
@@ -711,12 +704,11 @@ static void init_file_type(TSRMLS_D) {
   hex_to_binary(generated_file, &binary, &binary_len);
   internal_add_generated_file(binary, binary_len, generated_pool TSRMLS_CC);
   FREE(binary);
-  is_initialized = true;
+  is_inited_file_type = true;
 }
 
 static void init_file_wrappers(TSRMLS_D) {
-  static bool is_initialized = false;
-  if (is_initialized) return;
+  if (is_inited_file_wrappers) return;
   init_generated_pool_once(TSRMLS_C);
   const char* generated_file =
       "0abf030a1e676f6f676c652f70726f746f6275662f77726170706572732e"
@@ -739,7 +731,7 @@ static void init_file_wrappers(TSRMLS_D) {
   hex_to_binary(generated_file, &binary, &binary_len);
   internal_add_generated_file(binary, binary_len, generated_pool TSRMLS_CC);
   FREE(binary);
-  is_initialized = true;
+  is_inited_file_wrappers = true;
 }
 
 // -----------------------------------------------------------------------------
@@ -928,6 +920,7 @@ PHP_METHOD(Any, unpack) {
   PHP_PROTO_FAKE_SCOPE_BEGIN(any_type);
   zval* type_url_php = php_proto_message_read_property(
       getThis(), &type_url_member PHP_PROTO_TSRMLS_CC);
+  zval_dtor(&type_url_member);
   PHP_PROTO_FAKE_SCOPE_END;
 
   // Get fully-qualified name from type url.
@@ -938,7 +931,7 @@ PHP_METHOD(Any, unpack) {
   if (url_prefix_len > type_url_len ||
       strncmp(TYPE_URL_PREFIX, type_url, url_prefix_len) != 0) {
     zend_throw_exception(
-        NULL, "Type url needs to be type.googleapis.com/fully-qulified",
+        NULL, "Type url needs to be type.googleapis.com/fully-qualified",
         0 TSRMLS_CC);
     return;
   }
@@ -963,6 +956,7 @@ PHP_METHOD(Any, unpack) {
   PHP_PROTO_FAKE_SCOPE_RESTART(any_type);
   zval* value = php_proto_message_read_property(
       getThis(), &value_member PHP_PROTO_TSRMLS_CC);
+  zval_dtor(&value_member);
   PHP_PROTO_FAKE_SCOPE_END;
 
   merge_from_string(Z_STRVAL_P(value), Z_STRLEN_P(value), desc, msg);
@@ -991,6 +985,8 @@ PHP_METHOD(Any, pack) {
   PHP_PROTO_FAKE_SCOPE_BEGIN(any_type);
   message_handlers->write_property(getThis(), &member, &data,
                                    NULL PHP_PROTO_TSRMLS_CC);
+  zval_dtor(&data);
+  zval_dtor(&member);
   PHP_PROTO_FAKE_SCOPE_END;
 
   // Set type url.
@@ -1008,6 +1004,8 @@ PHP_METHOD(Any, pack) {
   PHP_PROTO_FAKE_SCOPE_RESTART(any_type);
   message_handlers->write_property(getThis(), &member, &type_url_php,
                                    NULL PHP_PROTO_TSRMLS_CC);
+  zval_dtor(&type_url_php);
+  zval_dtor(&member);
   PHP_PROTO_FAKE_SCOPE_END;
   FREE(type_url);
 }
@@ -1040,6 +1038,7 @@ PHP_METHOD(Any, is) {
   PHP_PROTO_FAKE_SCOPE_BEGIN(any_type);
   zval* value =
       php_proto_message_read_property(getThis(), &member PHP_PROTO_TSRMLS_CC);
+  zval_dtor(&member);
   PHP_PROTO_FAKE_SCOPE_END;
 
   // Compare two type url.
diff --git a/php/ext/google/protobuf/protobuf.c b/php/ext/google/protobuf/protobuf.c
index daebb460..da00302f 100644
--- a/php/ext/google/protobuf/protobuf.c
+++ b/php/ext/google/protobuf/protobuf.c
@@ -145,6 +145,21 @@ PHP_PROTO_HASHTABLE_VALUE get_proto_obj(const char* proto) {
 }
 
 // -----------------------------------------------------------------------------
+// Well Known Types.
+// -----------------------------------------------------------------------------
+
+bool is_inited_file_any;
+bool is_inited_file_api;
+bool is_inited_file_duration;
+bool is_inited_file_field_mask;
+bool is_inited_file_empty;
+bool is_inited_file_source_context;
+bool is_inited_file_struct;
+bool is_inited_file_timestamp;
+bool is_inited_file_type;
+bool is_inited_file_wrappers;
+
+// -----------------------------------------------------------------------------
 // Reserved Name.
 // -----------------------------------------------------------------------------
 
@@ -250,6 +265,17 @@ static PHP_RINIT_FUNCTION(protobuf) {
   generated_pool_php = NULL;
   internal_generated_pool_php = NULL;
 
+  is_inited_file_any = false;
+  is_inited_file_api = false;
+  is_inited_file_duration = false;
+  is_inited_file_field_mask = false;
+  is_inited_file_empty = false;
+  is_inited_file_source_context = false;
+  is_inited_file_struct = false;
+  is_inited_file_timestamp = false;
+  is_inited_file_type = false;
+  is_inited_file_wrappers = false;
+
   return 0;
 }
 
@@ -288,6 +314,17 @@ static PHP_RSHUTDOWN_FUNCTION(protobuf) {
   }
 #endif
 
+  is_inited_file_any = true;
+  is_inited_file_api = true;
+  is_inited_file_duration = true;
+  is_inited_file_field_mask = true;
+  is_inited_file_empty = true;
+  is_inited_file_source_context = true;
+  is_inited_file_struct = true;
+  is_inited_file_timestamp = true;
+  is_inited_file_type = true;
+  is_inited_file_wrappers = true;
+
   return 0;
 }
 
diff --git a/php/ext/google/protobuf/protobuf.h b/php/ext/google/protobuf/protobuf.h
index 6ab0f134..be1de5cf 100644
--- a/php/ext/google/protobuf/protobuf.h
+++ b/php/ext/google/protobuf/protobuf.h
@@ -1172,6 +1172,17 @@ extern zend_class_entry* oneof_descriptor_type;
 // Well Known Type.
 // -----------------------------------------------------------------------------
 
+extern bool is_inited_file_any;
+extern bool is_inited_file_api;
+extern bool is_inited_file_duration;
+extern bool is_inited_file_field_mask;
+extern bool is_inited_file_empty;
+extern bool is_inited_file_source_context;
+extern bool is_inited_file_struct;
+extern bool is_inited_file_timestamp;
+extern bool is_inited_file_type;
+extern bool is_inited_file_wrappers;
+
 PHP_METHOD(GPBMetadata_Any, initOnce);
 PHP_METHOD(GPBMetadata_Api, initOnce);
 PHP_METHOD(GPBMetadata_Duration, initOnce);
diff --git a/php/ext/google/protobuf/upb.c b/php/ext/google/protobuf/upb.c
index c02a5ce4..e01f3bfd 100644
--- a/php/ext/google/protobuf/upb.c
+++ b/php/ext/google/protobuf/upb.c
@@ -1,9 +1,1908 @@
 // Amalgamated source file
 #include "upb.h"
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     google/protobuf/descriptor.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#include <stddef.h>
+
+
+struct google_protobuf_FileDescriptorSet {
+  upb_array* file;
+};
+
+static const upb_msglayout_msginit_v1 *const google_protobuf_FileDescriptorSet_submsgs[1] = {
+  &google_protobuf_FileDescriptorProto_msginit,
+};
+
+static const upb_msglayout_fieldinit_v1 google_protobuf_FileDescriptorSet__fields[1] = {
+  {1, offsetof(google_protobuf_FileDescriptorSet, file), UPB_NO_HASBIT, UPB_NOT_IN_ONEOF, 0, 11, 3},
+};
+
+const upb_msglayout_msginit_v1 google_protobuf_FileDescriptorSet_msginit = {
+  &google_protobuf_FileDescriptorSet_submsgs[0],
+  &google_protobuf_FileDescriptorSet__fields[0],
+  NULL,
+  NULL, /* TODO. default_msg */
+  UPB_ALIGNED_SIZEOF(google_protobuf_FileDescriptorSet), 1, 0, false, true
+};
+
+google_protobuf_FileDescriptorSet *google_protobuf_FileDescriptorSet_new(upb_env *env) {
+  google_protobuf_FileDescriptorSet *msg = upb_env_malloc(env, sizeof(*msg));
+  memset(msg, 0, sizeof(*msg));  /* TODO: defaults */
+  return msg;
+}
+google_protobuf_FileDescriptorSet *google_protobuf_FileDescriptorSet_parsenew(upb_stringview buf, upb_env *env) {
+  google_protobuf_FileDescriptorSet *msg = google_protobuf_FileDescriptorSet_new(env);
+  if (upb_decode(buf, msg, &google_protobuf_FileDescriptorSet_msginit, env)) {
+    return msg;
+  } else {
+    return NULL;
+  }
+}
+char *google_protobuf_FileDescriptorSet_serialize(google_protobuf_FileDescriptorSet *msg, upb_env *env, size_t *size) {
+  return upb_encode(msg, &google_protobuf_FileDescriptorSet_msginit, env, size);
+}
+const upb_array* google_protobuf_FileDescriptorSet_file(const google_protobuf_FileDescriptorSet *msg) {
+  return msg->file;
+}
+void google_protobuf_FileDescriptorSet_set_file(google_protobuf_FileDescriptorSet *msg, upb_array* value) {
+  msg->file = value;
+}
+struct google_protobuf_FileDescriptorProto {
+  upb_stringview name;
+  upb_stringview package;
+  upb_stringview syntax;
+  google_protobuf_FileOptions* options;
+  google_protobuf_SourceCodeInfo* source_code_info;
+  upb_array* dependency;
+  upb_array* message_type;
+  upb_array* enum_type;
+  upb_array* service;
+  upb_array* extension;
+  upb_array* public_dependency;
+  upb_array* weak_dependency;
+};
+
+static const upb_msglayout_msginit_v1 *const google_protobuf_FileDescriptorProto_submsgs[6] = {
+  &google_protobuf_DescriptorProto_msginit,
+  &google_protobuf_EnumDescriptorProto_msginit,
+  &google_protobuf_FieldDescriptorProto_msginit,
+  &google_protobuf_FileOptions_msginit,
+  &google_protobuf_ServiceDescriptorProto_msginit,
+  &google_protobuf_SourceCodeInfo_msginit,
+};
+
+static const upb_msglayout_fieldinit_v1 google_protobuf_FileDescriptorProto__fields[12] = {
+  {1, offsetof(google_protobuf_FileDescriptorProto, name), 0, UPB_NOT_IN_ONEOF, UPB_NO_SUBMSG, 9, 1},
+  {2, offsetof(google_protobuf_FileDescriptorProto, package), 1, UPB_NOT_IN_ONEOF, UPB_NO_SUBMSG, 9, 1},
+  {3, offsetof(google_protobuf_FileDescriptorProto, dependency), UPB_NO_HASBIT, UPB_NOT_IN_ONEOF, UPB_NO_SUBMSG, 9, 3},
+  {4, offsetof(google_protobuf_FileDescriptorProto, message_type), UPB_NO_HASBIT, UPB_NOT_IN_ONEOF, 0, 11, 3},
+  {5, offsetof(google_protobuf_FileDescriptorProto, enum_type), UPB_NO_HASBIT, UPB_NOT_IN_ONEOF, 1, 11, 3},
+  {6, offsetof(google_protobuf_FileDescriptorProto, service), UPB_NO_HASBIT, UPB_NOT_IN_ONEOF, 4, 11, 3},
+  {7, offsetof(google_protobuf_FileDescriptorProto, extension), UPB_NO_HASBIT, UPB_NOT_IN_ONEOF, 2, 11, 3},
+  {8, offsetof(google_protobuf_FileDescriptorProto, options), 3, UPB_NOT_IN_ONEOF, 3, 11, 1},
+  {9, offsetof(google_protobuf_FileDescriptorProto, source_code_info), 4, UPB_NOT_IN_ONEOF, 5, 11, 1},
+  {10, offsetof(google_protobuf_FileDescriptorProto, public_dependency), UPB_NO_HASBIT, UPB_NOT_IN_ONEOF, UPB_NO_SUBMSG, 5, 3},
+  {11, offsetof(google_protobuf_FileDescriptorProto, weak_dependency), UPB_NO_HASBIT, UPB_NOT_IN_ONEOF, UPB_NO_SUBMSG, 5, 3},
+  {12, offsetof(google_protobuf_FileDescriptorProto, syntax), 2, UPB_NOT_IN_ONEOF, UPB_NO_SUBMSG, 9, 1},
+};
+
+const upb_msglayout_msginit_v1 google_protobuf_FileDescriptorProto_msginit = {
+  &google_protobuf_FileDescriptorProto_submsgs[0],
+  &google_protobuf_FileDescriptorProto__fields[0],
+  NULL,
+  NULL, /* TODO. default_msg */
+  UPB_ALIGNED_SIZEOF(google_protobuf_FileDescriptorProto), 12, 0, false, true
+};
+
+google_protobuf_FileDescriptorProto *google_protobuf_FileDescriptorProto_new(upb_env *env) {
+  google_protobuf_FileDescriptorProto *msg = upb_env_malloc(env, sizeof(*msg));
+  memset(msg, 0, sizeof(*msg));  /* TODO: defaults */
+  return msg;
+}
+google_protobuf_FileDescriptorProto *google_protobuf_FileDescriptorProto_parsenew(upb_stringview buf, upb_env *env) {
+  google_protobuf_FileDescriptorProto *msg = google_protobuf_FileDescriptorProto_new(env);
+  if (upb_decode(buf, msg, &google_protobuf_FileDescriptorProto_msginit, env)) {
+    return msg;
+  } else {
+    return NULL;
+  }
+}
+char *google_protobuf_FileDescriptorProto_serialize(google_protobuf_FileDescriptorProto *msg, upb_env *env, size_t *size) {
+  return upb_encode(msg, &google_protobuf_FileDescriptorProto_msginit, env, size);
+}
+upb_stringview google_protobuf_FileDescriptorProto_name(const google_protobuf_FileDescriptorProto *msg) {
+  return msg->name;
+}
+void google_protobuf_FileDescriptorProto_set_name(google_protobuf_FileDescriptorProto *msg, upb_stringview value) {
+  msg->name = value;
+}
+upb_stringview google_protobuf_FileDescriptorProto_package(const google_protobuf_FileDescriptorProto *msg) {
+  return msg->package;
+}
+void google_protobuf_FileDescriptorProto_set_package(google_protobuf_FileDescriptorProto *msg, upb_stringview value) {
+  msg->package = value;
+}
+const upb_array* google_protobuf_FileDescriptorProto_dependency(const google_protobuf_FileDescriptorProto *msg) {
+  return msg->dependency;
+}
+void google_protobuf_FileDescriptorProto_set_dependency(google_protobuf_FileDescriptorProto *msg, upb_array* value) {
+  msg->dependency = value;
+}
+const upb_array* google_protobuf_FileDescriptorProto_message_type(const google_protobuf_FileDescriptorProto *msg) {
+  return msg->message_type;
+}
+void google_protobuf_FileDescriptorProto_set_message_type(google_protobuf_FileDescriptorProto *msg, upb_array* value) {
+  msg->message_type = value;
+}
+const upb_array* google_protobuf_FileDescriptorProto_enum_type(const google_protobuf_FileDescriptorProto *msg) {
+  return msg->enum_type;
+}
+void google_protobuf_FileDescriptorProto_set_enum_type(google_protobuf_FileDescriptorProto *msg, upb_array* value) {
+  msg->enum_type = value;
+}
+const upb_array* google_protobuf_FileDescriptorProto_service(const google_protobuf_FileDescriptorProto *msg) {
+  return msg->service;
+}
+void google_protobuf_FileDescriptorProto_set_service(google_protobuf_FileDescriptorProto *msg, upb_array* value) {
+  msg->service = value;
+}
+const upb_array* google_protobuf_FileDescriptorProto_extension(const google_protobuf_FileDescriptorProto *msg) {
+  return msg->extension;
+}
+void google_protobuf_FileDescriptorProto_set_extension(google_protobuf_FileDescriptorProto *msg, upb_array* value) {
+  msg->extension = value;
+}
+const google_protobuf_FileOptions* google_protobuf_FileDescriptorProto_options(const google_protobuf_FileDescriptorProto *msg) {
+  return msg->options;
+}
+void google_protobuf_FileDescriptorProto_set_options(google_protobuf_FileDescriptorProto *msg, google_protobuf_FileOptions* value) {
+  msg->options = value;
+}
+const google_protobuf_SourceCodeInfo* google_protobuf_FileDescriptorProto_source_code_info(const google_protobuf_FileDescriptorProto *msg) {
+  return msg->source_code_info;
+}
+void google_protobuf_FileDescriptorProto_set_source_code_info(google_protobuf_FileDescriptorProto *msg, google_protobuf_SourceCodeInfo* value) {
+  msg->source_code_info = value;
+}
+const upb_array* google_protobuf_FileDescriptorProto_public_dependency(const google_protobuf_FileDescriptorProto *msg) {
+  return msg->public_dependency;
+}
+void google_protobuf_FileDescriptorProto_set_public_dependency(google_protobuf_FileDescriptorProto *msg, upb_array* value) {
+  msg->public_dependency = value;
+}
+const upb_array* google_protobuf_FileDescriptorProto_weak_dependency(const google_protobuf_FileDescriptorProto *msg) {
+  return msg->weak_dependency;
+}
+void google_protobuf_FileDescriptorProto_set_weak_dependency(google_protobuf_FileDescriptorProto *msg, upb_array* value) {
+  msg->weak_dependency = value;
+}
+upb_stringview google_protobuf_FileDescriptorProto_syntax(const google_protobuf_FileDescriptorProto *msg) {
+  return msg->syntax;
+}
+void google_protobuf_FileDescriptorProto_set_syntax(google_protobuf_FileDescriptorProto *msg, upb_stringview value) {
+  msg->syntax = value;
+}
+struct google_protobuf_DescriptorProto {
+  upb_stringview name;
+  google_protobuf_MessageOptions* options;
+  upb_array* field;
+  upb_array* nested_type;
+  upb_array* enum_type;
+  upb_array* extension_range;
+  upb_array* extension;
+  upb_array* oneof_decl;
+  upb_array* reserved_range;
+  upb_array* reserved_name;
+};
+
+static const upb_msglayout_msginit_v1 *const google_protobuf_DescriptorProto_submsgs[8] = {
+  &google_protobuf_DescriptorProto_msginit,
+  &google_protobuf_DescriptorProto_ExtensionRange_msginit,
+  &google_protobuf_DescriptorProto_ReservedRange_msginit,
+  &google_protobuf_EnumDescriptorProto_msginit,
+  &google_protobuf_FieldDescriptorProto_msginit,
+  &google_protobuf_MessageOptions_msginit,
+  &google_protobuf_OneofDescriptorProto_msginit,
+};
+
+static const upb_msglayout_fieldinit_v1 google_protobuf_DescriptorProto__fields[10] = {
+  {1, offsetof(google_protobuf_DescriptorProto, name), 0, UPB_NOT_IN_ONEOF, UPB_NO_SUBMSG, 9, 1},
+  {2, offsetof(google_protobuf_DescriptorProto, field), UPB_NO_HASBIT, UPB_NOT_IN_ONEOF, 4, 11, 3},
+  {3, offsetof(google_protobuf_DescriptorProto, nested_type), UPB_NO_HASBIT, UPB_NOT_IN_ONEOF, 0, 11, 3},
+  {4, offsetof(google_protobuf_DescriptorProto, enum_type), UPB_NO_HASBIT, UPB_NOT_IN_ONEOF, 3, 11, 3},
+  {5, offsetof(google_protobuf_DescriptorProto, extension_range), UPB_NO_HASBIT, UPB_NOT_IN_ONEOF, 1, 11, 3},
+  {6, offsetof(google_protobuf_DescriptorProto, extension), UPB_NO_HASBIT, UPB_NOT_IN_ONEOF, 4, 11, 3},
+  {7, offsetof(google_protobuf_DescriptorProto, options), 1, UPB_NOT_IN_ONEOF, 5, 11, 1},
+  {8, offsetof(google_protobuf_DescriptorProto, oneof_decl), UPB_NO_HASBIT, UPB_NOT_IN_ONEOF, 6, 11, 3},
+  {9, offsetof(google_protobuf_DescriptorProto, reserved_range), UPB_NO_HASBIT, UPB_NOT_IN_ONEOF, 2, 11, 3},
+  {10, offsetof(google_protobuf_DescriptorProto, reserved_name), UPB_NO_HASBIT, UPB_NOT_IN_ONEOF, UPB_NO_SUBMSG, 9, 3},
+};
+
+const upb_msglayout_msginit_v1 google_protobuf_DescriptorProto_msginit = {
+  &google_protobuf_DescriptorProto_submsgs[0],
+  &google_protobuf_DescriptorProto__fields[0],
+  NULL,
+  NULL, /* TODO. default_msg */
+  UPB_ALIGNED_SIZEOF(google_protobuf_DescriptorProto), 10, 0, false, true
+};
+
+google_protobuf_DescriptorProto *google_protobuf_DescriptorProto_new(upb_env *env) {
+  google_protobuf_DescriptorProto *msg = upb_env_malloc(env, sizeof(*msg));
+  memset(msg, 0, sizeof(*msg));  /* TODO: defaults */
+  return msg;
+}
+google_protobuf_DescriptorProto *google_protobuf_DescriptorProto_parsenew(upb_stringview buf, upb_env *env) {
+  google_protobuf_DescriptorProto *msg = google_protobuf_DescriptorProto_new(env);
+  if (upb_decode(buf, msg, &google_protobuf_DescriptorProto_msginit, env)) {
+    return msg;
+  } else {
+    return NULL;
+  }
+}
+char *google_protobuf_DescriptorProto_serialize(google_protobuf_DescriptorProto *msg, upb_env *env, size_t *size) {
+  return upb_encode(msg, &google_protobuf_DescriptorProto_msginit, env, size);
+}
+upb_stringview google_protobuf_DescriptorProto_name(const google_protobuf_DescriptorProto *msg) {
+  return msg->name;
+}
+void google_protobuf_DescriptorProto_set_name(google_protobuf_DescriptorProto *msg, upb_stringview value) {
+  msg->name = value;
+}
+const upb_array* google_protobuf_DescriptorProto_field(const google_protobuf_DescriptorProto *msg) {
+  return msg->field;
+}
+void google_protobuf_DescriptorProto_set_field(google_protobuf_DescriptorProto *msg, upb_array* value) {
+  msg->field = value;
+}
+const upb_array* google_protobuf_DescriptorProto_nested_type(const google_protobuf_DescriptorProto *msg) {
+  return msg->nested_type;
+}
+void google_protobuf_DescriptorProto_set_nested_type(google_protobuf_DescriptorProto *msg, upb_array* value) {
+  msg->nested_type = value;
+}
+const upb_array* google_protobuf_DescriptorProto_enum_type(const google_protobuf_DescriptorProto *msg) {
+  return msg->enum_type;
+}
+void google_protobuf_DescriptorProto_set_enum_type(google_protobuf_DescriptorProto *msg, upb_array* value) {
+  msg->enum_type = value;
+}
+const upb_array* google_protobuf_DescriptorProto_extension_range(const google_protobuf_DescriptorProto *msg) {
+  return msg->extension_range;
+}
+void google_protobuf_DescriptorProto_set_extension_range(google_protobuf_DescriptorProto *msg, upb_array* value) {
+  msg->extension_range = value;
+}
+const upb_array* google_protobuf_DescriptorProto_extension(const google_protobuf_DescriptorProto *msg) {
+  return msg->extension;
+}
+void google_protobuf_DescriptorProto_set_extension(google_protobuf_DescriptorProto *msg, upb_array* value) {
+  msg->extension = value;
+}
+const google_protobuf_MessageOptions* google_protobuf_DescriptorProto_options(const google_protobuf_DescriptorProto *msg) {
+  return msg->options;
+}
+void google_protobuf_DescriptorProto_set_options(google_protobuf_DescriptorProto *msg, google_protobuf_MessageOptions* value) {
+  msg->options = value;
+}
+const upb_array* google_protobuf_DescriptorProto_oneof_decl(const google_protobuf_DescriptorProto *msg) {
+  return msg->oneof_decl;
+}
+void google_protobuf_DescriptorProto_set_oneof_decl(google_protobuf_DescriptorProto *msg, upb_array* value) {
+  msg->oneof_decl = value;
+}
+const upb_array* google_protobuf_DescriptorProto_reserved_range(const google_protobuf_DescriptorProto *msg) {
+  return msg->reserved_range;
+}
+void google_protobuf_DescriptorProto_set_reserved_range(google_protobuf_DescriptorProto *msg, upb_array* value) {
+  msg->reserved_range = value;
+}
+const upb_array* google_protobuf_DescriptorProto_reserved_name(const google_protobuf_DescriptorProto *msg) {
+  return msg->reserved_name;
+}
+void google_protobuf_DescriptorProto_set_reserved_name(google_protobuf_DescriptorProto *msg, upb_array* value) {
+  msg->reserved_name = value;
+}
+struct google_protobuf_DescriptorProto_ExtensionRange {
+  int32_t start;
+  int32_t end;
+  google_protobuf_ExtensionRangeOptions* options;
+};
+
+static const upb_msglayout_msginit_v1 *const google_protobuf_DescriptorProto_ExtensionRange_submsgs[1] = {
+  &google_protobuf_ExtensionRangeOptions_msginit,
+};
+
+static const upb_msglayout_fieldinit_v1 google_protobuf_DescriptorProto_ExtensionRange__fields[3] = {
+  {1, offsetof(google_protobuf_DescriptorProto_ExtensionRange, start), 0, UPB_NOT_IN_ONEOF, UPB_NO_SUBMSG, 5, 1},
+  {2, offsetof(google_protobuf_DescriptorProto_ExtensionRange, end), 1, UPB_NOT_IN_ONEOF, UPB_NO_SUBMSG, 5, 1},
+  {3, offsetof(google_protobuf_DescriptorProto_ExtensionRange, options), 2, UPB_NOT_IN_ONEOF, 0, 11, 1},
+};
+
+const upb_msglayout_msginit_v1 google_protobuf_DescriptorProto_ExtensionRange_msginit = {
+  &google_protobuf_DescriptorProto_ExtensionRange_submsgs[0],
+  &google_protobuf_DescriptorProto_ExtensionRange__fields[0],
+  NULL,
+  NULL, /* TODO. default_msg */
+  UPB_ALIGNED_SIZEOF(google_protobuf_DescriptorProto_ExtensionRange), 3, 0, false, true
+};
+
+google_protobuf_DescriptorProto_ExtensionRange *google_protobuf_DescriptorProto_ExtensionRange_new(upb_env *env) {
+  google_protobuf_DescriptorProto_ExtensionRange *msg = upb_env_malloc(env, sizeof(*msg));
+  memset(msg, 0, sizeof(*msg));  /* TODO: defaults */
+  return msg;
+}
+google_protobuf_DescriptorProto_ExtensionRange *google_protobuf_DescriptorProto_ExtensionRange_parsenew(upb_stringview buf, upb_env *env) {
+  google_protobuf_DescriptorProto_ExtensionRange *msg = google_protobuf_DescriptorProto_ExtensionRange_new(env);
+  if (upb_decode(buf, msg, &google_protobuf_DescriptorProto_ExtensionRange_msginit, env)) {
+    return msg;
+  } else {
+    return NULL;
+  }
+}
+char *google_protobuf_DescriptorProto_ExtensionRange_serialize(google_protobuf_DescriptorProto_ExtensionRange *msg, upb_env *env, size_t *size) {
+  return upb_encode(msg, &google_protobuf_DescriptorProto_ExtensionRange_msginit, env, size);
+}
+int32_t google_protobuf_DescriptorProto_ExtensionRange_start(const google_protobuf_DescriptorProto_ExtensionRange *msg) {
+  return msg->start;
+}
+void google_protobuf_DescriptorProto_ExtensionRange_set_start(google_protobuf_DescriptorProto_ExtensionRange *msg, int32_t value) {
+  msg->start = value;
+}
+int32_t google_protobuf_DescriptorProto_ExtensionRange_end(const google_protobuf_DescriptorProto_ExtensionRange *msg) {
+  return msg->end;
+}
+void google_protobuf_DescriptorProto_ExtensionRange_set_end(google_protobuf_DescriptorProto_ExtensionRange *msg, int32_t value) {
+  msg->end = value;
+}
+const google_protobuf_ExtensionRangeOptions* google_protobuf_DescriptorProto_ExtensionRange_options(const google_protobuf_DescriptorProto_ExtensionRange *msg) {
+  return msg->options;
+}
+void google_protobuf_DescriptorProto_ExtensionRange_set_options(google_protobuf_DescriptorProto_ExtensionRange *msg, google_protobuf_ExtensionRangeOptions* value) {
+  msg->options = value;
+}
+struct google_protobuf_DescriptorProto_ReservedRange {
+  int32_t start;
+  int32_t end;
+};
+
+static const upb_msglayout_fieldinit_v1 google_protobuf_DescriptorProto_ReservedRange__fields[2] = {
+  {1, offsetof(google_protobuf_DescriptorProto_ReservedRange, start), 0, UPB_NOT_IN_ONEOF, UPB_NO_SUBMSG, 5, 1},
+  {2, offsetof(google_protobuf_DescriptorProto_ReservedRange, end), 1, UPB_NOT_IN_ONEOF, UPB_NO_SUBMSG, 5, 1},
+};
+
+const upb_msglayout_msginit_v1 google_protobuf_DescriptorProto_ReservedRange_msginit = {
+  NULL,
+  &google_protobuf_DescriptorProto_ReservedRange__fields[0],
+  NULL,
+  NULL, /* TODO. default_msg */
+  UPB_ALIGNED_SIZEOF(google_protobuf_DescriptorProto_ReservedRange), 2, 0, false, true
+};
+
+google_protobuf_DescriptorProto_ReservedRange *google_protobuf_DescriptorProto_ReservedRange_new(upb_env *env) {
+  google_protobuf_DescriptorProto_ReservedRange *msg = upb_env_malloc(env, sizeof(*msg));
+  memset(msg, 0, sizeof(*msg));  /* TODO: defaults */
+  return msg;
+}
+google_protobuf_DescriptorProto_ReservedRange *google_protobuf_DescriptorProto_ReservedRange_parsenew(upb_stringview buf, upb_env *env) {
+  google_protobuf_DescriptorProto_ReservedRange *msg = google_protobuf_DescriptorProto_ReservedRange_new(env);
+  if (upb_decode(buf, msg, &google_protobuf_DescriptorProto_ReservedRange_msginit, env)) {
+    return msg;
+  } else {
+    return NULL;
+  }
+}
+char *google_protobuf_DescriptorProto_ReservedRange_serialize(google_protobuf_DescriptorProto_ReservedRange *msg, upb_env *env, size_t *size) {
+  return upb_encode(msg, &google_protobuf_DescriptorProto_ReservedRange_msginit, env, size);
+}
+int32_t google_protobuf_DescriptorProto_ReservedRange_start(const google_protobuf_DescriptorProto_ReservedRange *msg) {
+  return msg->start;
+}
+void google_protobuf_DescriptorProto_ReservedRange_set_start(google_protobuf_DescriptorProto_ReservedRange *msg, int32_t value) {
+  msg->start = value;
+}
+int32_t google_protobuf_DescriptorProto_ReservedRange_end(const google_protobuf_DescriptorProto_ReservedRange *msg) {
+  return msg->end;
+}
+void google_protobuf_DescriptorProto_ReservedRange_set_end(google_protobuf_DescriptorProto_ReservedRange *msg, int32_t value) {
+  msg->end = value;
+}
+struct google_protobuf_ExtensionRangeOptions {
+  upb_array* uninterpreted_option;
+};
+
+static const upb_msglayout_msginit_v1 *const google_protobuf_ExtensionRangeOptions_submsgs[1] = {
+  &google_protobuf_UninterpretedOption_msginit,
+};
+
+static const upb_msglayout_fieldinit_v1 google_protobuf_ExtensionRangeOptions__fields[1] = {
+  {999, offsetof(google_protobuf_ExtensionRangeOptions, uninterpreted_option), UPB_NO_HASBIT, UPB_NOT_IN_ONEOF, 0, 11, 3},
+};
+
+const upb_msglayout_msginit_v1 google_protobuf_ExtensionRangeOptions_msginit = {
+  &google_protobuf_ExtensionRangeOptions_submsgs[0],
+  &google_protobuf_ExtensionRangeOptions__fields[0],
+  NULL,
+  NULL, /* TODO. default_msg */
+  UPB_ALIGNED_SIZEOF(google_protobuf_ExtensionRangeOptions), 1, 0, false, true
+};
+
+google_protobuf_ExtensionRangeOptions *google_protobuf_ExtensionRangeOptions_new(upb_env *env) {
+  google_protobuf_ExtensionRangeOptions *msg = upb_env_malloc(env, sizeof(*msg));
+  memset(msg, 0, sizeof(*msg));  /* TODO: defaults */
+  return msg;
+}
+google_protobuf_ExtensionRangeOptions *google_protobuf_ExtensionRangeOptions_parsenew(upb_stringview buf, upb_env *env) {
+  google_protobuf_ExtensionRangeOptions *msg = google_protobuf_ExtensionRangeOptions_new(env);
+  if (upb_decode(buf, msg, &google_protobuf_ExtensionRangeOptions_msginit, env)) {
+    return msg;
+  } else {
+    return NULL;
+  }
+}
+char *google_protobuf_ExtensionRangeOptions_serialize(google_protobuf_ExtensionRangeOptions *msg, upb_env *env, size_t *size) {
+  return upb_encode(msg, &google_protobuf_ExtensionRangeOptions_msginit, env, size);
+}
+const upb_array* google_protobuf_ExtensionRangeOptions_uninterpreted_option(const google_protobuf_ExtensionRangeOptions *msg) {
+  return msg->uninterpreted_option;
+}
+void google_protobuf_ExtensionRangeOptions_set_uninterpreted_option(google_protobuf_ExtensionRangeOptions *msg, upb_array* value) {
+  msg->uninterpreted_option = value;
+}
+struct google_protobuf_FieldDescriptorProto {
+  google_protobuf_FieldDescriptorProto_Label label;
+  google_protobuf_FieldDescriptorProto_Type type;
+  int32_t number;
+  int32_t oneof_index;
+  upb_stringview name;
+  upb_stringview extendee;
+  upb_stringview type_name;
+  upb_stringview default_value;
+  upb_stringview json_name;
+  google_protobuf_FieldOptions* options;
+};
+
+static const upb_msglayout_msginit_v1 *const google_protobuf_FieldDescriptorProto_submsgs[1] = {
+  &google_protobuf_FieldOptions_msginit,
+};
+
+static const upb_msglayout_fieldinit_v1 google_protobuf_FieldDescriptorProto__fields[10] = {
+  {1, offsetof(google_protobuf_FieldDescriptorProto, name), 4, UPB_NOT_IN_ONEOF, UPB_NO_SUBMSG, 9, 1},
+  {2, offsetof(google_protobuf_FieldDescriptorProto, extendee), 5, UPB_NOT_IN_ONEOF, UPB_NO_SUBMSG, 9, 1},
+  {3, offsetof(google_protobuf_FieldDescriptorProto, number), 2, UPB_NOT_IN_ONEOF, UPB_NO_SUBMSG, 5, 1},
+  {4, offsetof(google_protobuf_FieldDescriptorProto, label), 0, UPB_NOT_IN_ONEOF, UPB_NO_SUBMSG, 14, 1},
+  {5, offsetof(google_protobuf_FieldDescriptorProto, type), 1, UPB_NOT_IN_ONEOF, UPB_NO_SUBMSG, 14, 1},
+  {6, offsetof(google_protobuf_FieldDescriptorProto, type_name), 6, UPB_NOT_IN_ONEOF, UPB_NO_SUBMSG, 9, 1},
+  {7, offsetof(google_protobuf_FieldDescriptorProto, default_value), 7, UPB_NOT_IN_ONEOF, UPB_NO_SUBMSG, 9, 1},
+  {8, offsetof(google_protobuf_FieldDescriptorProto, options), 9, UPB_NOT_IN_ONEOF, 0, 11, 1},
+  {9, offsetof(google_protobuf_FieldDescriptorProto, oneof_index), 3, UPB_NOT_IN_ONEOF, UPB_NO_SUBMSG, 5, 1},
+  {10, offsetof(google_protobuf_FieldDescriptorProto, json_name), 8, UPB_NOT_IN_ONEOF, UPB_NO_SUBMSG, 9, 1},
+};
+
+const upb_msglayout_msginit_v1 google_protobuf_FieldDescriptorProto_msginit = {
+  &google_protobuf_FieldDescriptorProto_submsgs[0],
+  &google_protobuf_FieldDescriptorProto__fields[0],
+  NULL,
+  NULL, /* TODO. default_msg */
+  UPB_ALIGNED_SIZEOF(google_protobuf_FieldDescriptorProto), 10, 0, false, true
+};
+
+google_protobuf_FieldDescriptorProto *google_protobuf_FieldDescriptorProto_new(upb_env *env) {
+  google_protobuf_FieldDescriptorProto *msg = upb_env_malloc(env, sizeof(*msg));
+  memset(msg, 0, sizeof(*msg));  /* TODO: defaults */
+  return msg;
+}
+google_protobuf_FieldDescriptorProto *google_protobuf_FieldDescriptorProto_parsenew(upb_stringview buf, upb_env *env) {
+  google_protobuf_FieldDescriptorProto *msg = google_protobuf_FieldDescriptorProto_new(env);
+  if (upb_decode(buf, msg, &google_protobuf_FieldDescriptorProto_msginit, env)) {
+    return msg;
+  } else {
+    return NULL;
+  }
+}
+char *google_protobuf_FieldDescriptorProto_serialize(google_protobuf_FieldDescriptorProto *msg, upb_env *env, size_t *size) {
+  return upb_encode(msg, &google_protobuf_FieldDescriptorProto_msginit, env, size);
+}
+upb_stringview google_protobuf_FieldDescriptorProto_name(const google_protobuf_FieldDescriptorProto *msg) {
+  return msg->name;
+}
+void google_protobuf_FieldDescriptorProto_set_name(google_protobuf_FieldDescriptorProto *msg, upb_stringview value) {
+  msg->name = value;
+}
+upb_stringview google_protobuf_FieldDescriptorProto_extendee(const google_protobuf_FieldDescriptorProto *msg) {
+  return msg->extendee;
+}
+void google_protobuf_FieldDescriptorProto_set_extendee(google_protobuf_FieldDescriptorProto *msg, upb_stringview value) {
+  msg->extendee = value;
+}
+int32_t google_protobuf_FieldDescriptorProto_number(const google_protobuf_FieldDescriptorProto *msg) {
+  return msg->number;
+}
+void google_protobuf_FieldDescriptorProto_set_number(google_protobuf_FieldDescriptorProto *msg, int32_t value) {
+  msg->number = value;
+}
+google_protobuf_FieldDescriptorProto_Label google_protobuf_FieldDescriptorProto_label(const google_protobuf_FieldDescriptorProto *msg) {
+  return msg->label;
+}
+void google_protobuf_FieldDescriptorProto_set_label(google_protobuf_FieldDescriptorProto *msg, google_protobuf_FieldDescriptorProto_Label value) {
+  msg->label = value;
+}
+google_protobuf_FieldDescriptorProto_Type google_protobuf_FieldDescriptorProto_type(const google_protobuf_FieldDescriptorProto *msg) {
+  return msg->type;
+}
+void google_protobuf_FieldDescriptorProto_set_type(google_protobuf_FieldDescriptorProto *msg, google_protobuf_FieldDescriptorProto_Type value) {
+  msg->type = value;
+}
+upb_stringview google_protobuf_FieldDescriptorProto_type_name(const google_protobuf_FieldDescriptorProto *msg) {
+  return msg->type_name;
+}
+void google_protobuf_FieldDescriptorProto_set_type_name(google_protobuf_FieldDescriptorProto *msg, upb_stringview value) {
+  msg->type_name = value;
+}
+upb_stringview google_protobuf_FieldDescriptorProto_default_value(const google_protobuf_FieldDescriptorProto *msg) {
+  return msg->default_value;
+}
+void google_protobuf_FieldDescriptorProto_set_default_value(google_protobuf_FieldDescriptorProto *msg, upb_stringview value) {
+  msg->default_value = value;
+}
+const google_protobuf_FieldOptions* google_protobuf_FieldDescriptorProto_options(const google_protobuf_FieldDescriptorProto *msg) {
+  return msg->options;
+}
+void google_protobuf_FieldDescriptorProto_set_options(google_protobuf_FieldDescriptorProto *msg, google_protobuf_FieldOptions* value) {
+  msg->options = value;
+}
+int32_t google_protobuf_FieldDescriptorProto_oneof_index(const google_protobuf_FieldDescriptorProto *msg) {
+  return msg->oneof_index;
+}
+void google_protobuf_FieldDescriptorProto_set_oneof_index(google_protobuf_FieldDescriptorProto *msg, int32_t value) {
+  msg->oneof_index = value;
+}
+upb_stringview google_protobuf_FieldDescriptorProto_json_name(const google_protobuf_FieldDescriptorProto *msg) {
+  return msg->json_name;
+}
+void google_protobuf_FieldDescriptorProto_set_json_name(google_protobuf_FieldDescriptorProto *msg, upb_stringview value) {
+  msg->json_name = value;
+}
+struct google_protobuf_OneofDescriptorProto {
+  upb_stringview name;
+  google_protobuf_OneofOptions* options;
+};
+
+static const upb_msglayout_msginit_v1 *const google_protobuf_OneofDescriptorProto_submsgs[1] = {
+  &google_protobuf_OneofOptions_msginit,
+};
+
+static const upb_msglayout_fieldinit_v1 google_protobuf_OneofDescriptorProto__fields[2] = {
+  {1, offsetof(google_protobuf_OneofDescriptorProto, name), 0, UPB_NOT_IN_ONEOF, UPB_NO_SUBMSG, 9, 1},
+  {2, offsetof(google_protobuf_OneofDescriptorProto, options), 1, UPB_NOT_IN_ONEOF, 0, 11, 1},
+};
+
+const upb_msglayout_msginit_v1 google_protobuf_OneofDescriptorProto_msginit = {
+  &google_protobuf_OneofDescriptorProto_submsgs[0],
+  &google_protobuf_OneofDescriptorProto__fields[0],
+  NULL,
+  NULL, /* TODO. default_msg */
+  UPB_ALIGNED_SIZEOF(google_protobuf_OneofDescriptorProto), 2, 0, false, true
+};
+
+google_protobuf_OneofDescriptorProto *google_protobuf_OneofDescriptorProto_new(upb_env *env) {
+  google_protobuf_OneofDescriptorProto *msg = upb_env_malloc(env, sizeof(*msg));
+  memset(msg, 0, sizeof(*msg));  /* TODO: defaults */
+  return msg;
+}
+google_protobuf_OneofDescriptorProto *google_protobuf_OneofDescriptorProto_parsenew(upb_stringview buf, upb_env *env) {
+  google_protobuf_OneofDescriptorProto *msg = google_protobuf_OneofDescriptorProto_new(env);
+  if (upb_decode(buf, msg, &google_protobuf_OneofDescriptorProto_msginit, env)) {
+    return msg;
+  } else {
+    return NULL;
+  }
+}
+char *google_protobuf_OneofDescriptorProto_serialize(google_protobuf_OneofDescriptorProto *msg, upb_env *env, size_t *size) {
+  return upb_encode(msg, &google_protobuf_OneofDescriptorProto_msginit, env, size);
+}
+upb_stringview google_protobuf_OneofDescriptorProto_name(const google_protobuf_OneofDescriptorProto *msg) {
+  return msg->name;
+}
+void google_protobuf_OneofDescriptorProto_set_name(google_protobuf_OneofDescriptorProto *msg, upb_stringview value) {
+  msg->name = value;
+}
+const google_protobuf_OneofOptions* google_protobuf_OneofDescriptorProto_options(const google_protobuf_OneofDescriptorProto *msg) {
+  return msg->options;
+}
+void google_protobuf_OneofDescriptorProto_set_options(google_protobuf_OneofDescriptorProto *msg, google_protobuf_OneofOptions* value) {
+  msg->options = value;
+}
+struct google_protobuf_EnumDescriptorProto {
+  upb_stringview name;
+  google_protobuf_EnumOptions* options;
+  upb_array* value;
+  upb_array* reserved_range;
+  upb_array* reserved_name;
+};
+
+static const upb_msglayout_msginit_v1 *const google_protobuf_EnumDescriptorProto_submsgs[3] = {
+  &google_protobuf_EnumDescriptorProto_EnumReservedRange_msginit,
+  &google_protobuf_EnumOptions_msginit,
+  &google_protobuf_EnumValueDescriptorProto_msginit,
+};
+
+static const upb_msglayout_fieldinit_v1 google_protobuf_EnumDescriptorProto__fields[5] = {
+  {1, offsetof(google_protobuf_EnumDescriptorProto, name), 0, UPB_NOT_IN_ONEOF, UPB_NO_SUBMSG, 9, 1},
+  {2, offsetof(google_protobuf_EnumDescriptorProto, value), UPB_NO_HASBIT, UPB_NOT_IN_ONEOF, 2, 11, 3},
+  {3, offsetof(google_protobuf_EnumDescriptorProto, options), 1, UPB_NOT_IN_ONEOF, 1, 11, 1},
+  {4, offsetof(google_protobuf_EnumDescriptorProto, reserved_range), UPB_NO_HASBIT, UPB_NOT_IN_ONEOF, 0, 11, 3},
+  {5, offsetof(google_protobuf_EnumDescriptorProto, reserved_name), UPB_NO_HASBIT, UPB_NOT_IN_ONEOF, UPB_NO_SUBMSG, 9, 3},
+};
+
+const upb_msglayout_msginit_v1 google_protobuf_EnumDescriptorProto_msginit = {
+  &google_protobuf_EnumDescriptorProto_submsgs[0],
+  &google_protobuf_EnumDescriptorProto__fields[0],
+  NULL,
+  NULL, /* TODO. default_msg */
+  UPB_ALIGNED_SIZEOF(google_protobuf_EnumDescriptorProto), 5, 0, false, true
+};
+
+google_protobuf_EnumDescriptorProto *google_protobuf_EnumDescriptorProto_new(upb_env *env) {
+  google_protobuf_EnumDescriptorProto *msg = upb_env_malloc(env, sizeof(*msg));
+  memset(msg, 0, sizeof(*msg));  /* TODO: defaults */
+  return msg;
+}
+google_protobuf_EnumDescriptorProto *google_protobuf_EnumDescriptorProto_parsenew(upb_stringview buf, upb_env *env) {
+  google_protobuf_EnumDescriptorProto *msg = google_protobuf_EnumDescriptorProto_new(env);
+  if (upb_decode(buf, msg, &google_protobuf_EnumDescriptorProto_msginit, env)) {
+    return msg;
+  } else {
+    return NULL;
+  }
+}
+char *google_protobuf_EnumDescriptorProto_serialize(google_protobuf_EnumDescriptorProto *msg, upb_env *env, size_t *size) {
+  return upb_encode(msg, &google_protobuf_EnumDescriptorProto_msginit, env, size);
+}
+upb_stringview google_protobuf_EnumDescriptorProto_name(const google_protobuf_EnumDescriptorProto *msg) {
+  return msg->name;
+}
+void google_protobuf_EnumDescriptorProto_set_name(google_protobuf_EnumDescriptorProto *msg, upb_stringview value) {
+  msg->name = value;
+}
+const upb_array* google_protobuf_EnumDescriptorProto_value(const google_protobuf_EnumDescriptorProto *msg) {
+  return msg->value;
+}
+void google_protobuf_EnumDescriptorProto_set_value(google_protobuf_EnumDescriptorProto *msg, upb_array* value) {
+  msg->value = value;
+}
+const google_protobuf_EnumOptions* google_protobuf_EnumDescriptorProto_options(const google_protobuf_EnumDescriptorProto *msg) {
+  return msg->options;
+}
+void google_protobuf_EnumDescriptorProto_set_options(google_protobuf_EnumDescriptorProto *msg, google_protobuf_EnumOptions* value) {
+  msg->options = value;
+}
+const upb_array* google_protobuf_EnumDescriptorProto_reserved_range(const google_protobuf_EnumDescriptorProto *msg) {
+  return msg->reserved_range;
+}
+void google_protobuf_EnumDescriptorProto_set_reserved_range(google_protobuf_EnumDescriptorProto *msg, upb_array* value) {
+  msg->reserved_range = value;
+}
+const upb_array* google_protobuf_EnumDescriptorProto_reserved_name(const google_protobuf_EnumDescriptorProto *msg) {
+  return msg->reserved_name;
+}
+void google_protobuf_EnumDescriptorProto_set_reserved_name(google_protobuf_EnumDescriptorProto *msg, upb_array* value) {
+  msg->reserved_name = value;
+}
+struct google_protobuf_EnumDescriptorProto_EnumReservedRange {
+  int32_t start;
+  int32_t end;
+};
+
+static const upb_msglayout_fieldinit_v1 google_protobuf_EnumDescriptorProto_EnumReservedRange__fields[2] = {
+  {1, offsetof(google_protobuf_EnumDescriptorProto_EnumReservedRange, start), 0, UPB_NOT_IN_ONEOF, UPB_NO_SUBMSG, 5, 1},
+  {2, offsetof(google_protobuf_EnumDescriptorProto_EnumReservedRange, end), 1, UPB_NOT_IN_ONEOF, UPB_NO_SUBMSG, 5, 1},
+};
+
+const upb_msglayout_msginit_v1 google_protobuf_EnumDescriptorProto_EnumReservedRange_msginit = {
+  NULL,
+  &google_protobuf_EnumDescriptorProto_EnumReservedRange__fields[0],
+  NULL,
+  NULL, /* TODO. default_msg */
+  UPB_ALIGNED_SIZEOF(google_protobuf_EnumDescriptorProto_EnumReservedRange), 2, 0, false, true
+};
+
+google_protobuf_EnumDescriptorProto_EnumReservedRange *google_protobuf_EnumDescriptorProto_EnumReservedRange_new(upb_env *env) {
+  google_protobuf_EnumDescriptorProto_EnumReservedRange *msg = upb_env_malloc(env, sizeof(*msg));
+  memset(msg, 0, sizeof(*msg));  /* TODO: defaults */
+  return msg;
+}
+google_protobuf_EnumDescriptorProto_EnumReservedRange *google_protobuf_EnumDescriptorProto_EnumReservedRange_parsenew(upb_stringview buf, upb_env *env) {
+  google_protobuf_EnumDescriptorProto_EnumReservedRange *msg = google_protobuf_EnumDescriptorProto_EnumReservedRange_new(env);
+  if (upb_decode(buf, msg, &google_protobuf_EnumDescriptorProto_EnumReservedRange_msginit, env)) {
+    return msg;
+  } else {
+    return NULL;
+  }
+}
+char *google_protobuf_EnumDescriptorProto_EnumReservedRange_serialize(google_protobuf_EnumDescriptorProto_EnumReservedRange *msg, upb_env *env, size_t *size) {
+  return upb_encode(msg, &google_protobuf_EnumDescriptorProto_EnumReservedRange_msginit, env, size);
+}
+int32_t google_protobuf_EnumDescriptorProto_EnumReservedRange_start(const google_protobuf_EnumDescriptorProto_EnumReservedRange *msg) {
+  return msg->start;
+}
+void google_protobuf_EnumDescriptorProto_EnumReservedRange_set_start(google_protobuf_EnumDescriptorProto_EnumReservedRange *msg, int32_t value) {
+  msg->start = value;
+}
+int32_t google_protobuf_EnumDescriptorProto_EnumReservedRange_end(const google_protobuf_EnumDescriptorProto_EnumReservedRange *msg) {
+  return msg->end;
+}
+void google_protobuf_EnumDescriptorProto_EnumReservedRange_set_end(google_protobuf_EnumDescriptorProto_EnumReservedRange *msg, int32_t value) {
+  msg->end = value;
+}
+struct google_protobuf_EnumValueDescriptorProto {
+  int32_t number;
+  upb_stringview name;
+  google_protobuf_EnumValueOptions* options;
+};
+
+static const upb_msglayout_msginit_v1 *const google_protobuf_EnumValueDescriptorProto_submsgs[1] = {
+  &google_protobuf_EnumValueOptions_msginit,
+};
+
+static const upb_msglayout_fieldinit_v1 google_protobuf_EnumValueDescriptorProto__fields[3] = {
+  {1, offsetof(google_protobuf_EnumValueDescriptorProto, name), 1, UPB_NOT_IN_ONEOF, UPB_NO_SUBMSG, 9, 1},
+  {2, offsetof(google_protobuf_EnumValueDescriptorProto, number), 0, UPB_NOT_IN_ONEOF, UPB_NO_SUBMSG, 5, 1},
+  {3, offsetof(google_protobuf_EnumValueDescriptorProto, options), 2, UPB_NOT_IN_ONEOF, 0, 11, 1},
+};
+
+const upb_msglayout_msginit_v1 google_protobuf_EnumValueDescriptorProto_msginit = {
+  &google_protobuf_EnumValueDescriptorProto_submsgs[0],
+  &google_protobuf_EnumValueDescriptorProto__fields[0],
+  NULL,
+  NULL, /* TODO. default_msg */
+  UPB_ALIGNED_SIZEOF(google_protobuf_EnumValueDescriptorProto), 3, 0, false, true
+};
+
+google_protobuf_EnumValueDescriptorProto *google_protobuf_EnumValueDescriptorProto_new(upb_env *env) {
+  google_protobuf_EnumValueDescriptorProto *msg = upb_env_malloc(env, sizeof(*msg));
+  memset(msg, 0, sizeof(*msg));  /* TODO: defaults */
+  return msg;
+}
+google_protobuf_EnumValueDescriptorProto *google_protobuf_EnumValueDescriptorProto_parsenew(upb_stringview buf, upb_env *env) {
+  google_protobuf_EnumValueDescriptorProto *msg = google_protobuf_EnumValueDescriptorProto_new(env);
+  if (upb_decode(buf, msg, &google_protobuf_EnumValueDescriptorProto_msginit, env)) {
+    return msg;
+  } else {
+    return NULL;
+  }
+}
+char *google_protobuf_EnumValueDescriptorProto_serialize(google_protobuf_EnumValueDescriptorProto *msg, upb_env *env, size_t *size) {
+  return upb_encode(msg, &google_protobuf_EnumValueDescriptorProto_msginit, env, size);
+}
+upb_stringview google_protobuf_EnumValueDescriptorProto_name(const google_protobuf_EnumValueDescriptorProto *msg) {
+  return msg->name;
+}
+void google_protobuf_EnumValueDescriptorProto_set_name(google_protobuf_EnumValueDescriptorProto *msg, upb_stringview value) {
+  msg->name = value;
+}
+int32_t google_protobuf_EnumValueDescriptorProto_number(const google_protobuf_EnumValueDescriptorProto *msg) {
+  return msg->number;
+}
+void google_protobuf_EnumValueDescriptorProto_set_number(google_protobuf_EnumValueDescriptorProto *msg, int32_t value) {
+  msg->number = value;
+}
+const google_protobuf_EnumValueOptions* google_protobuf_EnumValueDescriptorProto_options(const google_protobuf_EnumValueDescriptorProto *msg) {
+  return msg->options;
+}
+void google_protobuf_EnumValueDescriptorProto_set_options(google_protobuf_EnumValueDescriptorProto *msg, google_protobuf_EnumValueOptions* value) {
+  msg->options = value;
+}
+struct google_protobuf_ServiceDescriptorProto {
+  upb_stringview name;
+  google_protobuf_ServiceOptions* options;
+  upb_array* method;
+};
+
+static const upb_msglayout_msginit_v1 *const google_protobuf_ServiceDescriptorProto_submsgs[2] = {
+  &google_protobuf_MethodDescriptorProto_msginit,
+  &google_protobuf_ServiceOptions_msginit,
+};
+
+static const upb_msglayout_fieldinit_v1 google_protobuf_ServiceDescriptorProto__fields[3] = {
+  {1, offsetof(google_protobuf_ServiceDescriptorProto, name), 0, UPB_NOT_IN_ONEOF, UPB_NO_SUBMSG, 9, 1},
+  {2, offsetof(google_protobuf_ServiceDescriptorProto, method), UPB_NO_HASBIT, UPB_NOT_IN_ONEOF, 0, 11, 3},
+  {3, offsetof(google_protobuf_ServiceDescriptorProto, options), 1, UPB_NOT_IN_ONEOF, 1, 11, 1},
+};
+
+const upb_msglayout_msginit_v1 google_protobuf_ServiceDescriptorProto_msginit = {
+  &google_protobuf_ServiceDescriptorProto_submsgs[0],
+  &google_protobuf_ServiceDescriptorProto__fields[0],
+  NULL,
+  NULL, /* TODO. default_msg */
+  UPB_ALIGNED_SIZEOF(google_protobuf_ServiceDescriptorProto), 3, 0, false, true
+};
+
+google_protobuf_ServiceDescriptorProto *google_protobuf_ServiceDescriptorProto_new(upb_env *env) {
+  google_protobuf_ServiceDescriptorProto *msg = upb_env_malloc(env, sizeof(*msg));
+  memset(msg, 0, sizeof(*msg));  /* TODO: defaults */
+  return msg;
+}
+google_protobuf_ServiceDescriptorProto *google_protobuf_ServiceDescriptorProto_parsenew(upb_stringview buf, upb_env *env) {
+  google_protobuf_ServiceDescriptorProto *msg = google_protobuf_ServiceDescriptorProto_new(env);
+  if (upb_decode(buf, msg, &google_protobuf_ServiceDescriptorProto_msginit, env)) {
+    return msg;
+  } else {
+    return NULL;
+  }
+}
+char *google_protobuf_ServiceDescriptorProto_serialize(google_protobuf_ServiceDescriptorProto *msg, upb_env *env, size_t *size) {
+  return upb_encode(msg, &google_protobuf_ServiceDescriptorProto_msginit, env, size);
+}
+upb_stringview google_protobuf_ServiceDescriptorProto_name(const google_protobuf_ServiceDescriptorProto *msg) {
+  return msg->name;
+}
+void google_protobuf_ServiceDescriptorProto_set_name(google_protobuf_ServiceDescriptorProto *msg, upb_stringview value) {
+  msg->name = value;
+}
+const upb_array* google_protobuf_ServiceDescriptorProto_method(const google_protobuf_ServiceDescriptorProto *msg) {
+  return msg->method;
+}
+void google_protobuf_ServiceDescriptorProto_set_method(google_protobuf_ServiceDescriptorProto *msg, upb_array* value) {
+  msg->method = value;
+}
+const google_protobuf_ServiceOptions* google_protobuf_ServiceDescriptorProto_options(const google_protobuf_ServiceDescriptorProto *msg) {
+  return msg->options;
+}
+void google_protobuf_ServiceDescriptorProto_set_options(google_protobuf_ServiceDescriptorProto *msg, google_protobuf_ServiceOptions* value) {
+  msg->options = value;
+}
+struct google_protobuf_MethodDescriptorProto {
+  bool client_streaming;
+  bool server_streaming;
+  upb_stringview name;
+  upb_stringview input_type;
+  upb_stringview output_type;
+  google_protobuf_MethodOptions* options;
+};
+
+static const upb_msglayout_msginit_v1 *const google_protobuf_MethodDescriptorProto_submsgs[1] = {
+  &google_protobuf_MethodOptions_msginit,
+};
+
+static const upb_msglayout_fieldinit_v1 google_protobuf_MethodDescriptorProto__fields[6] = {
+  {1, offsetof(google_protobuf_MethodDescriptorProto, name), 2, UPB_NOT_IN_ONEOF, UPB_NO_SUBMSG, 9, 1},
+  {2, offsetof(google_protobuf_MethodDescriptorProto, input_type), 3, UPB_NOT_IN_ONEOF, UPB_NO_SUBMSG, 9, 1},
+  {3, offsetof(google_protobuf_MethodDescriptorProto, output_type), 4, UPB_NOT_IN_ONEOF, UPB_NO_SUBMSG, 9, 1},
+  {4, offsetof(google_protobuf_MethodDescriptorProto, options), 5, UPB_NOT_IN_ONEOF, 0, 11, 1},
+  {5, offsetof(google_protobuf_MethodDescriptorProto, client_streaming), 0, UPB_NOT_IN_ONEOF, UPB_NO_SUBMSG, 8, 1},
+  {6, offsetof(google_protobuf_MethodDescriptorProto, server_streaming), 1, UPB_NOT_IN_ONEOF, UPB_NO_SUBMSG, 8, 1},
+};
+
+const upb_msglayout_msginit_v1 google_protobuf_MethodDescriptorProto_msginit = {
+  &google_protobuf_MethodDescriptorProto_submsgs[0],
+  &google_protobuf_MethodDescriptorProto__fields[0],
+  NULL,
+  NULL, /* TODO. default_msg */
+  UPB_ALIGNED_SIZEOF(google_protobuf_MethodDescriptorProto), 6, 0, false, true
+};
+
+google_protobuf_MethodDescriptorProto *google_protobuf_MethodDescriptorProto_new(upb_env *env) {
+  google_protobuf_MethodDescriptorProto *msg = upb_env_malloc(env, sizeof(*msg));
+  memset(msg, 0, sizeof(*msg));  /* TODO: defaults */
+  return msg;
+}
+google_protobuf_MethodDescriptorProto *google_protobuf_MethodDescriptorProto_parsenew(upb_stringview buf, upb_env *env) {
+  google_protobuf_MethodDescriptorProto *msg = google_protobuf_MethodDescriptorProto_new(env);
+  if (upb_decode(buf, msg, &google_protobuf_MethodDescriptorProto_msginit, env)) {
+    return msg;
+  } else {
+    return NULL;
+  }
+}
+char *google_protobuf_MethodDescriptorProto_serialize(google_protobuf_MethodDescriptorProto *msg, upb_env *env, size_t *size) {
+  return upb_encode(msg, &google_protobuf_MethodDescriptorProto_msginit, env, size);
+}
+upb_stringview google_protobuf_MethodDescriptorProto_name(const google_protobuf_MethodDescriptorProto *msg) {
+  return msg->name;
+}
+void google_protobuf_MethodDescriptorProto_set_name(google_protobuf_MethodDescriptorProto *msg, upb_stringview value) {
+  msg->name = value;
+}
+upb_stringview google_protobuf_MethodDescriptorProto_input_type(const google_protobuf_MethodDescriptorProto *msg) {
+  return msg->input_type;
+}
+void google_protobuf_MethodDescriptorProto_set_input_type(google_protobuf_MethodDescriptorProto *msg, upb_stringview value) {
+  msg->input_type = value;
+}
+upb_stringview google_protobuf_MethodDescriptorProto_output_type(const google_protobuf_MethodDescriptorProto *msg) {
+  return msg->output_type;
+}
+void google_protobuf_MethodDescriptorProto_set_output_type(google_protobuf_MethodDescriptorProto *msg, upb_stringview value) {
+  msg->output_type = value;
+}
+const google_protobuf_MethodOptions* google_protobuf_MethodDescriptorProto_options(const google_protobuf_MethodDescriptorProto *msg) {
+  return msg->options;
+}
+void google_protobuf_MethodDescriptorProto_set_options(google_protobuf_MethodDescriptorProto *msg, google_protobuf_MethodOptions* value) {
+  msg->options = value;
+}
+bool google_protobuf_MethodDescriptorProto_client_streaming(const google_protobuf_MethodDescriptorProto *msg) {
+  return msg->client_streaming;
+}
+void google_protobuf_MethodDescriptorProto_set_client_streaming(google_protobuf_MethodDescriptorProto *msg, bool value) {
+  msg->client_streaming = value;
+}
+bool google_protobuf_MethodDescriptorProto_server_streaming(const google_protobuf_MethodDescriptorProto *msg) {
+  return msg->server_streaming;
+}
+void google_protobuf_MethodDescriptorProto_set_server_streaming(google_protobuf_MethodDescriptorProto *msg, bool value) {
+  msg->server_streaming = value;
+}
+struct google_protobuf_FileOptions {
+  google_protobuf_FileOptions_OptimizeMode optimize_for;
+  bool java_multiple_files;
+  bool cc_generic_services;
+  bool java_generic_services;
+  bool py_generic_services;
+  bool java_generate_equals_and_hash;
+  bool deprecated;
+  bool java_string_check_utf8;
+  bool cc_enable_arenas;
+  bool php_generic_services;
+  upb_stringview java_package;
+  upb_stringview java_outer_classname;
+  upb_stringview go_package;
+  upb_stringview objc_class_prefix;
+  upb_stringview csharp_namespace;
+  upb_stringview swift_prefix;
+  upb_stringview php_class_prefix;
+  upb_stringview php_namespace;
+  upb_array* uninterpreted_option;
+};
+
+static const upb_msglayout_msginit_v1 *const google_protobuf_FileOptions_submsgs[1] = {
+  &google_protobuf_UninterpretedOption_msginit,
+};
+
+static const upb_msglayout_fieldinit_v1 google_protobuf_FileOptions__fields[19] = {
+  {1, offsetof(google_protobuf_FileOptions, java_package), 10, UPB_NOT_IN_ONEOF, UPB_NO_SUBMSG, 9, 1},
+  {8, offsetof(google_protobuf_FileOptions, java_outer_classname), 11, UPB_NOT_IN_ONEOF, UPB_NO_SUBMSG, 9, 1},
+  {9, offsetof(google_protobuf_FileOptions, optimize_for), 0, UPB_NOT_IN_ONEOF, UPB_NO_SUBMSG, 14, 1},
+  {10, offsetof(google_protobuf_FileOptions, java_multiple_files), 1, UPB_NOT_IN_ONEOF, UPB_NO_SUBMSG, 8, 1},
+  {11, offsetof(google_protobuf_FileOptions, go_package), 12, UPB_NOT_IN_ONEOF, UPB_NO_SUBMSG, 9, 1},
+  {16, offsetof(google_protobuf_FileOptions, cc_generic_services), 2, UPB_NOT_IN_ONEOF, UPB_NO_SUBMSG, 8, 1},
+  {17, offsetof(google_protobuf_FileOptions, java_generic_services), 3, UPB_NOT_IN_ONEOF, UPB_NO_SUBMSG, 8, 1},
+  {18, offsetof(google_protobuf_FileOptions, py_generic_services), 4, UPB_NOT_IN_ONEOF, UPB_NO_SUBMSG, 8, 1},
+  {20, offsetof(google_protobuf_FileOptions, java_generate_equals_and_hash), 5, UPB_NOT_IN_ONEOF, UPB_NO_SUBMSG, 8, 1},
+  {23, offsetof(google_protobuf_FileOptions, deprecated), 6, UPB_NOT_IN_ONEOF, UPB_NO_SUBMSG, 8, 1},
+  {27, offsetof(google_protobuf_FileOptions, java_string_check_utf8), 7, UPB_NOT_IN_ONEOF, UPB_NO_SUBMSG, 8, 1},
+  {31, offsetof(google_protobuf_FileOptions, cc_enable_arenas), 8, UPB_NOT_IN_ONEOF, UPB_NO_SUBMSG, 8, 1},
+  {36, offsetof(google_protobuf_FileOptions, objc_class_prefix), 13, UPB_NOT_IN_ONEOF, UPB_NO_SUBMSG, 9, 1},
+  {37, offsetof(google_protobuf_FileOptions, csharp_namespace), 14, UPB_NOT_IN_ONEOF, UPB_NO_SUBMSG, 9, 1},
+  {39, offsetof(google_protobuf_FileOptions, swift_prefix), 15, UPB_NOT_IN_ONEOF, UPB_NO_SUBMSG, 9, 1},
+  {40, offsetof(google_protobuf_FileOptions, php_class_prefix), 16, UPB_NOT_IN_ONEOF, UPB_NO_SUBMSG, 9, 1},
+  {41, offsetof(google_protobuf_FileOptions, php_namespace), 17, UPB_NOT_IN_ONEOF, UPB_NO_SUBMSG, 9, 1},
+  {42, offsetof(google_protobuf_FileOptions, php_generic_services), 9, UPB_NOT_IN_ONEOF, UPB_NO_SUBMSG, 8, 1},
+  {999, offsetof(google_protobuf_FileOptions, uninterpreted_option), UPB_NO_HASBIT, UPB_NOT_IN_ONEOF, 0, 11, 3},
+};
+
+const upb_msglayout_msginit_v1 google_protobuf_FileOptions_msginit = {
+  &google_protobuf_FileOptions_submsgs[0],
+  &google_protobuf_FileOptions__fields[0],
+  NULL,
+  NULL, /* TODO. default_msg */
+  UPB_ALIGNED_SIZEOF(google_protobuf_FileOptions), 19, 0, false, true
+};
+
+google_protobuf_FileOptions *google_protobuf_FileOptions_new(upb_env *env) {
+  google_protobuf_FileOptions *msg = upb_env_malloc(env, sizeof(*msg));
+  memset(msg, 0, sizeof(*msg));  /* TODO: defaults */
+  return msg;
+}
+google_protobuf_FileOptions *google_protobuf_FileOptions_parsenew(upb_stringview buf, upb_env *env) {
+  google_protobuf_FileOptions *msg = google_protobuf_FileOptions_new(env);
+  if (upb_decode(buf, msg, &google_protobuf_FileOptions_msginit, env)) {
+    return msg;
+  } else {
+    return NULL;
+  }
+}
+char *google_protobuf_FileOptions_serialize(google_protobuf_FileOptions *msg, upb_env *env, size_t *size) {
+  return upb_encode(msg, &google_protobuf_FileOptions_msginit, env, size);
+}
+upb_stringview google_protobuf_FileOptions_java_package(const google_protobuf_FileOptions *msg) {
+  return msg->java_package;
+}
+void google_protobuf_FileOptions_set_java_package(google_protobuf_FileOptions *msg, upb_stringview value) {
+  msg->java_package = value;
+}
+upb_stringview google_protobuf_FileOptions_java_outer_classname(const google_protobuf_FileOptions *msg) {
+  return msg->java_outer_classname;
+}
+void google_protobuf_FileOptions_set_java_outer_classname(google_protobuf_FileOptions *msg, upb_stringview value) {
+  msg->java_outer_classname = value;
+}
+google_protobuf_FileOptions_OptimizeMode google_protobuf_FileOptions_optimize_for(const google_protobuf_FileOptions *msg) {
+  return msg->optimize_for;
+}
+void google_protobuf_FileOptions_set_optimize_for(google_protobuf_FileOptions *msg, google_protobuf_FileOptions_OptimizeMode value) {
+  msg->optimize_for = value;
+}
+bool google_protobuf_FileOptions_java_multiple_files(const google_protobuf_FileOptions *msg) {
+  return msg->java_multiple_files;
+}
+void google_protobuf_FileOptions_set_java_multiple_files(google_protobuf_FileOptions *msg, bool value) {
+  msg->java_multiple_files = value;
+}
+upb_stringview google_protobuf_FileOptions_go_package(const google_protobuf_FileOptions *msg) {
+  return msg->go_package;
+}
+void google_protobuf_FileOptions_set_go_package(google_protobuf_FileOptions *msg, upb_stringview value) {
+  msg->go_package = value;
+}
+bool google_protobuf_FileOptions_cc_generic_services(const google_protobuf_FileOptions *msg) {
+  return msg->cc_generic_services;
+}
+void google_protobuf_FileOptions_set_cc_generic_services(google_protobuf_FileOptions *msg, bool value) {
+  msg->cc_generic_services = value;
+}
+bool google_protobuf_FileOptions_java_generic_services(const google_protobuf_FileOptions *msg) {
+  return msg->java_generic_services;
+}
+void google_protobuf_FileOptions_set_java_generic_services(google_protobuf_FileOptions *msg, bool value) {
+  msg->java_generic_services = value;
+}
+bool google_protobuf_FileOptions_py_generic_services(const google_protobuf_FileOptions *msg) {
+  return msg->py_generic_services;
+}
+void google_protobuf_FileOptions_set_py_generic_services(google_protobuf_FileOptions *msg, bool value) {
+  msg->py_generic_services = value;
+}
+bool google_protobuf_FileOptions_java_generate_equals_and_hash(const google_protobuf_FileOptions *msg) {
+  return msg->java_generate_equals_and_hash;
+}
+void google_protobuf_FileOptions_set_java_generate_equals_and_hash(google_protobuf_FileOptions *msg, bool value) {
+  msg->java_generate_equals_and_hash = value;
+}
+bool google_protobuf_FileOptions_deprecated(const google_protobuf_FileOptions *msg) {
+  return msg->deprecated;
+}
+void google_protobuf_FileOptions_set_deprecated(google_protobuf_FileOptions *msg, bool value) {
+  msg->deprecated = value;
+}
+bool google_protobuf_FileOptions_java_string_check_utf8(const google_protobuf_FileOptions *msg) {
+  return msg->java_string_check_utf8;
+}
+void google_protobuf_FileOptions_set_java_string_check_utf8(google_protobuf_FileOptions *msg, bool value) {
+  msg->java_string_check_utf8 = value;
+}
+bool google_protobuf_FileOptions_cc_enable_arenas(const google_protobuf_FileOptions *msg) {
+  return msg->cc_enable_arenas;
+}
+void google_protobuf_FileOptions_set_cc_enable_arenas(google_protobuf_FileOptions *msg, bool value) {
+  msg->cc_enable_arenas = value;
+}
+upb_stringview google_protobuf_FileOptions_objc_class_prefix(const google_protobuf_FileOptions *msg) {
+  return msg->objc_class_prefix;
+}
+void google_protobuf_FileOptions_set_objc_class_prefix(google_protobuf_FileOptions *msg, upb_stringview value) {
+  msg->objc_class_prefix = value;
+}
+upb_stringview google_protobuf_FileOptions_csharp_namespace(const google_protobuf_FileOptions *msg) {
+  return msg->csharp_namespace;
+}
+void google_protobuf_FileOptions_set_csharp_namespace(google_protobuf_FileOptions *msg, upb_stringview value) {
+  msg->csharp_namespace = value;
+}
+upb_stringview google_protobuf_FileOptions_swift_prefix(const google_protobuf_FileOptions *msg) {
+  return msg->swift_prefix;
+}
+void google_protobuf_FileOptions_set_swift_prefix(google_protobuf_FileOptions *msg, upb_stringview value) {
+  msg->swift_prefix = value;
+}
+upb_stringview google_protobuf_FileOptions_php_class_prefix(const google_protobuf_FileOptions *msg) {
+  return msg->php_class_prefix;
+}
+void google_protobuf_FileOptions_set_php_class_prefix(google_protobuf_FileOptions *msg, upb_stringview value) {
+  msg->php_class_prefix = value;
+}
+upb_stringview google_protobuf_FileOptions_php_namespace(const google_protobuf_FileOptions *msg) {
+  return msg->php_namespace;
+}
+void google_protobuf_FileOptions_set_php_namespace(google_protobuf_FileOptions *msg, upb_stringview value) {
+  msg->php_namespace = value;
+}
+bool google_protobuf_FileOptions_php_generic_services(const google_protobuf_FileOptions *msg) {
+  return msg->php_generic_services;
+}
+void google_protobuf_FileOptions_set_php_generic_services(google_protobuf_FileOptions *msg, bool value) {
+  msg->php_generic_services = value;
+}
+const upb_array* google_protobuf_FileOptions_uninterpreted_option(const google_protobuf_FileOptions *msg) {
+  return msg->uninterpreted_option;
+}
+void google_protobuf_FileOptions_set_uninterpreted_option(google_protobuf_FileOptions *msg, upb_array* value) {
+  msg->uninterpreted_option = value;
+}
+struct google_protobuf_MessageOptions {
+  bool message_set_wire_format;
+  bool no_standard_descriptor_accessor;
+  bool deprecated;
+  bool map_entry;
+  upb_array* uninterpreted_option;
+};
+
+static const upb_msglayout_msginit_v1 *const google_protobuf_MessageOptions_submsgs[1] = {
+  &google_protobuf_UninterpretedOption_msginit,
+};
+
+static const upb_msglayout_fieldinit_v1 google_protobuf_MessageOptions__fields[5] = {
+  {1, offsetof(google_protobuf_MessageOptions, message_set_wire_format), 0, UPB_NOT_IN_ONEOF, UPB_NO_SUBMSG, 8, 1},
+  {2, offsetof(google_protobuf_MessageOptions, no_standard_descriptor_accessor), 1, UPB_NOT_IN_ONEOF, UPB_NO_SUBMSG, 8, 1},
+  {3, offsetof(google_protobuf_MessageOptions, deprecated), 2, UPB_NOT_IN_ONEOF, UPB_NO_SUBMSG, 8, 1},
+  {7, offsetof(google_protobuf_MessageOptions, map_entry), 3, UPB_NOT_IN_ONEOF, UPB_NO_SUBMSG, 8, 1},
+  {999, offsetof(google_protobuf_MessageOptions, uninterpreted_option), UPB_NO_HASBIT, UPB_NOT_IN_ONEOF, 0, 11, 3},
+};
+
+const upb_msglayout_msginit_v1 google_protobuf_MessageOptions_msginit = {
+  &google_protobuf_MessageOptions_submsgs[0],
+  &google_protobuf_MessageOptions__fields[0],
+  NULL,
+  NULL, /* TODO. default_msg */
+  UPB_ALIGNED_SIZEOF(google_protobuf_MessageOptions), 5, 0, false, true
+};
+
+google_protobuf_MessageOptions *google_protobuf_MessageOptions_new(upb_env *env) {
+  google_protobuf_MessageOptions *msg = upb_env_malloc(env, sizeof(*msg));
+  memset(msg, 0, sizeof(*msg));  /* TODO: defaults */
+  return msg;
+}
+google_protobuf_MessageOptions *google_protobuf_MessageOptions_parsenew(upb_stringview buf, upb_env *env) {
+  google_protobuf_MessageOptions *msg = google_protobuf_MessageOptions_new(env);
+  if (upb_decode(buf, msg, &google_protobuf_MessageOptions_msginit, env)) {
+    return msg;
+  } else {
+    return NULL;
+  }
+}
+char *google_protobuf_MessageOptions_serialize(google_protobuf_MessageOptions *msg, upb_env *env, size_t *size) {
+  return upb_encode(msg, &google_protobuf_MessageOptions_msginit, env, size);
+}
+bool google_protobuf_MessageOptions_message_set_wire_format(const google_protobuf_MessageOptions *msg) {
+  return msg->message_set_wire_format;
+}
+void google_protobuf_MessageOptions_set_message_set_wire_format(google_protobuf_MessageOptions *msg, bool value) {
+  msg->message_set_wire_format = value;
+}
+bool google_protobuf_MessageOptions_no_standard_descriptor_accessor(const google_protobuf_MessageOptions *msg) {
+  return msg->no_standard_descriptor_accessor;
+}
+void google_protobuf_MessageOptions_set_no_standard_descriptor_accessor(google_protobuf_MessageOptions *msg, bool value) {
+  msg->no_standard_descriptor_accessor = value;
+}
+bool google_protobuf_MessageOptions_deprecated(const google_protobuf_MessageOptions *msg) {
+  return msg->deprecated;
+}
+void google_protobuf_MessageOptions_set_deprecated(google_protobuf_MessageOptions *msg, bool value) {
+  msg->deprecated = value;
+}
+bool google_protobuf_MessageOptions_map_entry(const google_protobuf_MessageOptions *msg) {
+  return msg->map_entry;
+}
+void google_protobuf_MessageOptions_set_map_entry(google_protobuf_MessageOptions *msg, bool value) {
+  msg->map_entry = value;
+}
+const upb_array* google_protobuf_MessageOptions_uninterpreted_option(const google_protobuf_MessageOptions *msg) {
+  return msg->uninterpreted_option;
+}
+void google_protobuf_MessageOptions_set_uninterpreted_option(google_protobuf_MessageOptions *msg, upb_array* value) {
+  msg->uninterpreted_option = value;
+}
+struct google_protobuf_FieldOptions {
+  google_protobuf_FieldOptions_CType ctype;
+  google_protobuf_FieldOptions_JSType jstype;
+  bool packed;
+  bool deprecated;
+  bool lazy;
+  bool weak;
+  upb_array* uninterpreted_option;
+};
+
+static const upb_msglayout_msginit_v1 *const google_protobuf_FieldOptions_submsgs[1] = {
+  &google_protobuf_UninterpretedOption_msginit,
+};
+
+static const upb_msglayout_fieldinit_v1 google_protobuf_FieldOptions__fields[7] = {
+  {1, offsetof(google_protobuf_FieldOptions, ctype), 0, UPB_NOT_IN_ONEOF, UPB_NO_SUBMSG, 14, 1},
+  {2, offsetof(google_protobuf_FieldOptions, packed), 2, UPB_NOT_IN_ONEOF, UPB_NO_SUBMSG, 8, 1},
+  {3, offsetof(google_protobuf_FieldOptions, deprecated), 3, UPB_NOT_IN_ONEOF, UPB_NO_SUBMSG, 8, 1},
+  {5, offsetof(google_protobuf_FieldOptions, lazy), 4, UPB_NOT_IN_ONEOF, UPB_NO_SUBMSG, 8, 1},
+  {6, offsetof(google_protobuf_FieldOptions, jstype), 1, UPB_NOT_IN_ONEOF, UPB_NO_SUBMSG, 14, 1},
+  {10, offsetof(google_protobuf_FieldOptions, weak), 5, UPB_NOT_IN_ONEOF, UPB_NO_SUBMSG, 8, 1},
+  {999, offsetof(google_protobuf_FieldOptions, uninterpreted_option), UPB_NO_HASBIT, UPB_NOT_IN_ONEOF, 0, 11, 3},
+};
+
+const upb_msglayout_msginit_v1 google_protobuf_FieldOptions_msginit = {
+  &google_protobuf_FieldOptions_submsgs[0],
+  &google_protobuf_FieldOptions__fields[0],
+  NULL,
+  NULL, /* TODO. default_msg */
+  UPB_ALIGNED_SIZEOF(google_protobuf_FieldOptions), 7, 0, false, true
+};
+
+google_protobuf_FieldOptions *google_protobuf_FieldOptions_new(upb_env *env) {
+  google_protobuf_FieldOptions *msg = upb_env_malloc(env, sizeof(*msg));
+  memset(msg, 0, sizeof(*msg));  /* TODO: defaults */
+  return msg;
+}
+google_protobuf_FieldOptions *google_protobuf_FieldOptions_parsenew(upb_stringview buf, upb_env *env) {
+  google_protobuf_FieldOptions *msg = google_protobuf_FieldOptions_new(env);
+  if (upb_decode(buf, msg, &google_protobuf_FieldOptions_msginit, env)) {
+    return msg;
+  } else {
+    return NULL;
+  }
+}
+char *google_protobuf_FieldOptions_serialize(google_protobuf_FieldOptions *msg, upb_env *env, size_t *size) {
+  return upb_encode(msg, &google_protobuf_FieldOptions_msginit, env, size);
+}
+google_protobuf_FieldOptions_CType google_protobuf_FieldOptions_ctype(const google_protobuf_FieldOptions *msg) {
+  return msg->ctype;
+}
+void google_protobuf_FieldOptions_set_ctype(google_protobuf_FieldOptions *msg, google_protobuf_FieldOptions_CType value) {
+  msg->ctype = value;
+}
+bool google_protobuf_FieldOptions_packed(const google_protobuf_FieldOptions *msg) {
+  return msg->packed;
+}
+void google_protobuf_FieldOptions_set_packed(google_protobuf_FieldOptions *msg, bool value) {
+  msg->packed = value;
+}
+bool google_protobuf_FieldOptions_deprecated(const google_protobuf_FieldOptions *msg) {
+  return msg->deprecated;
+}
+void google_protobuf_FieldOptions_set_deprecated(google_protobuf_FieldOptions *msg, bool value) {
+  msg->deprecated = value;
+}
+bool google_protobuf_FieldOptions_lazy(const google_protobuf_FieldOptions *msg) {
+  return msg->lazy;
+}
+void google_protobuf_FieldOptions_set_lazy(google_protobuf_FieldOptions *msg, bool value) {
+  msg->lazy = value;
+}
+google_protobuf_FieldOptions_JSType google_protobuf_FieldOptions_jstype(const google_protobuf_FieldOptions *msg) {
+  return msg->jstype;
+}
+void google_protobuf_FieldOptions_set_jstype(google_protobuf_FieldOptions *msg, google_protobuf_FieldOptions_JSType value) {
+  msg->jstype = value;
+}
+bool google_protobuf_FieldOptions_weak(const google_protobuf_FieldOptions *msg) {
+  return msg->weak;
+}
+void google_protobuf_FieldOptions_set_weak(google_protobuf_FieldOptions *msg, bool value) {
+  msg->weak = value;
+}
+const upb_array* google_protobuf_FieldOptions_uninterpreted_option(const google_protobuf_FieldOptions *msg) {
+  return msg->uninterpreted_option;
+}
+void google_protobuf_FieldOptions_set_uninterpreted_option(google_protobuf_FieldOptions *msg, upb_array* value) {
+  msg->uninterpreted_option = value;
+}
+struct google_protobuf_OneofOptions {
+  upb_array* uninterpreted_option;
+};
+
+static const upb_msglayout_msginit_v1 *const google_protobuf_OneofOptions_submsgs[1] = {
+  &google_protobuf_UninterpretedOption_msginit,
+};
+
+static const upb_msglayout_fieldinit_v1 google_protobuf_OneofOptions__fields[1] = {
+  {999, offsetof(google_protobuf_OneofOptions, uninterpreted_option), UPB_NO_HASBIT, UPB_NOT_IN_ONEOF, 0, 11, 3},
+};
+
+const upb_msglayout_msginit_v1 google_protobuf_OneofOptions_msginit = {
+  &google_protobuf_OneofOptions_submsgs[0],
+  &google_protobuf_OneofOptions__fields[0],
+  NULL,
+  NULL, /* TODO. default_msg */
+  UPB_ALIGNED_SIZEOF(google_protobuf_OneofOptions), 1, 0, false, true
+};
+
+google_protobuf_OneofOptions *google_protobuf_OneofOptions_new(upb_env *env) {
+  google_protobuf_OneofOptions *msg = upb_env_malloc(env, sizeof(*msg));
+  memset(msg, 0, sizeof(*msg));  /* TODO: defaults */
+  return msg;
+}
+google_protobuf_OneofOptions *google_protobuf_OneofOptions_parsenew(upb_stringview buf, upb_env *env) {
+  google_protobuf_OneofOptions *msg = google_protobuf_OneofOptions_new(env);
+  if (upb_decode(buf, msg, &google_protobuf_OneofOptions_msginit, env)) {
+    return msg;
+  } else {
+    return NULL;
+  }
+}
+char *google_protobuf_OneofOptions_serialize(google_protobuf_OneofOptions *msg, upb_env *env, size_t *size) {
+  return upb_encode(msg, &google_protobuf_OneofOptions_msginit, env, size);
+}
+const upb_array* google_protobuf_OneofOptions_uninterpreted_option(const google_protobuf_OneofOptions *msg) {
+  return msg->uninterpreted_option;
+}
+void google_protobuf_OneofOptions_set_uninterpreted_option(google_protobuf_OneofOptions *msg, upb_array* value) {
+  msg->uninterpreted_option = value;
+}
+struct google_protobuf_EnumOptions {
+  bool allow_alias;
+  bool deprecated;
+  upb_array* uninterpreted_option;
+};
+
+static const upb_msglayout_msginit_v1 *const google_protobuf_EnumOptions_submsgs[1] = {
+  &google_protobuf_UninterpretedOption_msginit,
+};
+
+static const upb_msglayout_fieldinit_v1 google_protobuf_EnumOptions__fields[3] = {
+  {2, offsetof(google_protobuf_EnumOptions, allow_alias), 0, UPB_NOT_IN_ONEOF, UPB_NO_SUBMSG, 8, 1},
+  {3, offsetof(google_protobuf_EnumOptions, deprecated), 1, UPB_NOT_IN_ONEOF, UPB_NO_SUBMSG, 8, 1},
+  {999, offsetof(google_protobuf_EnumOptions, uninterpreted_option), UPB_NO_HASBIT, UPB_NOT_IN_ONEOF, 0, 11, 3},
+};
+
+const upb_msglayout_msginit_v1 google_protobuf_EnumOptions_msginit = {
+  &google_protobuf_EnumOptions_submsgs[0],
+  &google_protobuf_EnumOptions__fields[0],
+  NULL,
+  NULL, /* TODO. default_msg */
+  UPB_ALIGNED_SIZEOF(google_protobuf_EnumOptions), 3, 0, false, true
+};
+
+google_protobuf_EnumOptions *google_protobuf_EnumOptions_new(upb_env *env) {
+  google_protobuf_EnumOptions *msg = upb_env_malloc(env, sizeof(*msg));
+  memset(msg, 0, sizeof(*msg));  /* TODO: defaults */
+  return msg;
+}
+google_protobuf_EnumOptions *google_protobuf_EnumOptions_parsenew(upb_stringview buf, upb_env *env) {
+  google_protobuf_EnumOptions *msg = google_protobuf_EnumOptions_new(env);
+  if (upb_decode(buf, msg, &google_protobuf_EnumOptions_msginit, env)) {
+    return msg;
+  } else {
+    return NULL;
+  }
+}
+char *google_protobuf_EnumOptions_serialize(google_protobuf_EnumOptions *msg, upb_env *env, size_t *size) {
+  return upb_encode(msg, &google_protobuf_EnumOptions_msginit, env, size);
+}
+bool google_protobuf_EnumOptions_allow_alias(const google_protobuf_EnumOptions *msg) {
+  return msg->allow_alias;
+}
+void google_protobuf_EnumOptions_set_allow_alias(google_protobuf_EnumOptions *msg, bool value) {
+  msg->allow_alias = value;
+}
+bool google_protobuf_EnumOptions_deprecated(const google_protobuf_EnumOptions *msg) {
+  return msg->deprecated;
+}
+void google_protobuf_EnumOptions_set_deprecated(google_protobuf_EnumOptions *msg, bool value) {
+  msg->deprecated = value;
+}
+const upb_array* google_protobuf_EnumOptions_uninterpreted_option(const google_protobuf_EnumOptions *msg) {
+  return msg->uninterpreted_option;
+}
+void google_protobuf_EnumOptions_set_uninterpreted_option(google_protobuf_EnumOptions *msg, upb_array* value) {
+  msg->uninterpreted_option = value;
+}
+struct google_protobuf_EnumValueOptions {
+  bool deprecated;
+  upb_array* uninterpreted_option;
+};
+
+static const upb_msglayout_msginit_v1 *const google_protobuf_EnumValueOptions_submsgs[1] = {
+  &google_protobuf_UninterpretedOption_msginit,
+};
+
+static const upb_msglayout_fieldinit_v1 google_protobuf_EnumValueOptions__fields[2] = {
+  {1, offsetof(google_protobuf_EnumValueOptions, deprecated), 0, UPB_NOT_IN_ONEOF, UPB_NO_SUBMSG, 8, 1},
+  {999, offsetof(google_protobuf_EnumValueOptions, uninterpreted_option), UPB_NO_HASBIT, UPB_NOT_IN_ONEOF, 0, 11, 3},
+};
+
+const upb_msglayout_msginit_v1 google_protobuf_EnumValueOptions_msginit = {
+  &google_protobuf_EnumValueOptions_submsgs[0],
+  &google_protobuf_EnumValueOptions__fields[0],
+  NULL,
+  NULL, /* TODO. default_msg */
+  UPB_ALIGNED_SIZEOF(google_protobuf_EnumValueOptions), 2, 0, false, true
+};
+
+google_protobuf_EnumValueOptions *google_protobuf_EnumValueOptions_new(upb_env *env) {
+  google_protobuf_EnumValueOptions *msg = upb_env_malloc(env, sizeof(*msg));
+  memset(msg, 0, sizeof(*msg));  /* TODO: defaults */
+  return msg;
+}
+google_protobuf_EnumValueOptions *google_protobuf_EnumValueOptions_parsenew(upb_stringview buf, upb_env *env) {
+  google_protobuf_EnumValueOptions *msg = google_protobuf_EnumValueOptions_new(env);
+  if (upb_decode(buf, msg, &google_protobuf_EnumValueOptions_msginit, env)) {
+    return msg;
+  } else {
+    return NULL;
+  }
+}
+char *google_protobuf_EnumValueOptions_serialize(google_protobuf_EnumValueOptions *msg, upb_env *env, size_t *size) {
+  return upb_encode(msg, &google_protobuf_EnumValueOptions_msginit, env, size);
+}
+bool google_protobuf_EnumValueOptions_deprecated(const google_protobuf_EnumValueOptions *msg) {
+  return msg->deprecated;
+}
+void google_protobuf_EnumValueOptions_set_deprecated(google_protobuf_EnumValueOptions *msg, bool value) {
+  msg->deprecated = value;
+}
+const upb_array* google_protobuf_EnumValueOptions_uninterpreted_option(const google_protobuf_EnumValueOptions *msg) {
+  return msg->uninterpreted_option;
+}
+void google_protobuf_EnumValueOptions_set_uninterpreted_option(google_protobuf_EnumValueOptions *msg, upb_array* value) {
+  msg->uninterpreted_option = value;
+}
+struct google_protobuf_ServiceOptions {
+  bool deprecated;
+  upb_array* uninterpreted_option;
+};
+
+static const upb_msglayout_msginit_v1 *const google_protobuf_ServiceOptions_submsgs[1] = {
+  &google_protobuf_UninterpretedOption_msginit,
+};
+
+static const upb_msglayout_fieldinit_v1 google_protobuf_ServiceOptions__fields[2] = {
+  {33, offsetof(google_protobuf_ServiceOptions, deprecated), 0, UPB_NOT_IN_ONEOF, UPB_NO_SUBMSG, 8, 1},
+  {999, offsetof(google_protobuf_ServiceOptions, uninterpreted_option), UPB_NO_HASBIT, UPB_NOT_IN_ONEOF, 0, 11, 3},
+};
+
+const upb_msglayout_msginit_v1 google_protobuf_ServiceOptions_msginit = {
+  &google_protobuf_ServiceOptions_submsgs[0],
+  &google_protobuf_ServiceOptions__fields[0],
+  NULL,
+  NULL, /* TODO. default_msg */
+  UPB_ALIGNED_SIZEOF(google_protobuf_ServiceOptions), 2, 0, false, true
+};
+
+google_protobuf_ServiceOptions *google_protobuf_ServiceOptions_new(upb_env *env) {
+  google_protobuf_ServiceOptions *msg = upb_env_malloc(env, sizeof(*msg));
+  memset(msg, 0, sizeof(*msg));  /* TODO: defaults */
+  return msg;
+}
+google_protobuf_ServiceOptions *google_protobuf_ServiceOptions_parsenew(upb_stringview buf, upb_env *env) {
+  google_protobuf_ServiceOptions *msg = google_protobuf_ServiceOptions_new(env);
+  if (upb_decode(buf, msg, &google_protobuf_ServiceOptions_msginit, env)) {
+    return msg;
+  } else {
+    return NULL;
+  }
+}
+char *google_protobuf_ServiceOptions_serialize(google_protobuf_ServiceOptions *msg, upb_env *env, size_t *size) {
+  return upb_encode(msg, &google_protobuf_ServiceOptions_msginit, env, size);
+}
+bool google_protobuf_ServiceOptions_deprecated(const google_protobuf_ServiceOptions *msg) {
+  return msg->deprecated;
+}
+void google_protobuf_ServiceOptions_set_deprecated(google_protobuf_ServiceOptions *msg, bool value) {
+  msg->deprecated = value;
+}
+const upb_array* google_protobuf_ServiceOptions_uninterpreted_option(const google_protobuf_ServiceOptions *msg) {
+  return msg->uninterpreted_option;
+}
+void google_protobuf_ServiceOptions_set_uninterpreted_option(google_protobuf_ServiceOptions *msg, upb_array* value) {
+  msg->uninterpreted_option = value;
+}
+struct google_protobuf_MethodOptions {
+  google_protobuf_MethodOptions_IdempotencyLevel idempotency_level;
+  bool deprecated;
+  upb_array* uninterpreted_option;
+};
+
+static const upb_msglayout_msginit_v1 *const google_protobuf_MethodOptions_submsgs[1] = {
+  &google_protobuf_UninterpretedOption_msginit,
+};
+
+static const upb_msglayout_fieldinit_v1 google_protobuf_MethodOptions__fields[3] = {
+  {33, offsetof(google_protobuf_MethodOptions, deprecated), 1, UPB_NOT_IN_ONEOF, UPB_NO_SUBMSG, 8, 1},
+  {34, offsetof(google_protobuf_MethodOptions, idempotency_level), 0, UPB_NOT_IN_ONEOF, UPB_NO_SUBMSG, 14, 1},
+  {999, offsetof(google_protobuf_MethodOptions, uninterpreted_option), UPB_NO_HASBIT, UPB_NOT_IN_ONEOF, 0, 11, 3},
+};
+
+const upb_msglayout_msginit_v1 google_protobuf_MethodOptions_msginit = {
+  &google_protobuf_MethodOptions_submsgs[0],
+  &google_protobuf_MethodOptions__fields[0],
+  NULL,
+  NULL, /* TODO. default_msg */
+  UPB_ALIGNED_SIZEOF(google_protobuf_MethodOptions), 3, 0, false, true
+};
+
+google_protobuf_MethodOptions *google_protobuf_MethodOptions_new(upb_env *env) {
+  google_protobuf_MethodOptions *msg = upb_env_malloc(env, sizeof(*msg));
+  memset(msg, 0, sizeof(*msg));  /* TODO: defaults */
+  return msg;
+}
+google_protobuf_MethodOptions *google_protobuf_MethodOptions_parsenew(upb_stringview buf, upb_env *env) {
+  google_protobuf_MethodOptions *msg = google_protobuf_MethodOptions_new(env);
+  if (upb_decode(buf, msg, &google_protobuf_MethodOptions_msginit, env)) {
+    return msg;
+  } else {
+    return NULL;
+  }
+}
+char *google_protobuf_MethodOptions_serialize(google_protobuf_MethodOptions *msg, upb_env *env, size_t *size) {
+  return upb_encode(msg, &google_protobuf_MethodOptions_msginit, env, size);
+}
+bool google_protobuf_MethodOptions_deprecated(const google_protobuf_MethodOptions *msg) {
+  return msg->deprecated;
+}
+void google_protobuf_MethodOptions_set_deprecated(google_protobuf_MethodOptions *msg, bool value) {
+  msg->deprecated = value;
+}
+google_protobuf_MethodOptions_IdempotencyLevel google_protobuf_MethodOptions_idempotency_level(const google_protobuf_MethodOptions *msg) {
+  return msg->idempotency_level;
+}
+void google_protobuf_MethodOptions_set_idempotency_level(google_protobuf_MethodOptions *msg, google_protobuf_MethodOptions_IdempotencyLevel value) {
+  msg->idempotency_level = value;
+}
+const upb_array* google_protobuf_MethodOptions_uninterpreted_option(const google_protobuf_MethodOptions *msg) {
+  return msg->uninterpreted_option;
+}
+void google_protobuf_MethodOptions_set_uninterpreted_option(google_protobuf_MethodOptions *msg, upb_array* value) {
+  msg->uninterpreted_option = value;
+}
+struct google_protobuf_UninterpretedOption {
+  uint64_t positive_int_value;
+  int64_t negative_int_value;
+  double double_value;
+  upb_stringview identifier_value;
+  upb_stringview string_value;
+  upb_stringview aggregate_value;
+  upb_array* name;
+};
+
+static const upb_msglayout_msginit_v1 *const google_protobuf_UninterpretedOption_submsgs[1] = {
+  &google_protobuf_UninterpretedOption_NamePart_msginit,
+};
+
+static const upb_msglayout_fieldinit_v1 google_protobuf_UninterpretedOption__fields[7] = {
+  {2, offsetof(google_protobuf_UninterpretedOption, name), UPB_NO_HASBIT, UPB_NOT_IN_ONEOF, 0, 11, 3},
+  {3, offsetof(google_protobuf_UninterpretedOption, identifier_value), 3, UPB_NOT_IN_ONEOF, UPB_NO_SUBMSG, 9, 1},
+  {4, offsetof(google_protobuf_UninterpretedOption, positive_int_value), 0, UPB_NOT_IN_ONEOF, UPB_NO_SUBMSG, 4, 1},
+  {5, offsetof(google_protobuf_UninterpretedOption, negative_int_value), 1, UPB_NOT_IN_ONEOF, UPB_NO_SUBMSG, 3, 1},
+  {6, offsetof(google_protobuf_UninterpretedOption, double_value), 2, UPB_NOT_IN_ONEOF, UPB_NO_SUBMSG, 1, 1},
+  {7, offsetof(google_protobuf_UninterpretedOption, string_value), 4, UPB_NOT_IN_ONEOF, UPB_NO_SUBMSG, 12, 1},
+  {8, offsetof(google_protobuf_UninterpretedOption, aggregate_value), 5, UPB_NOT_IN_ONEOF, UPB_NO_SUBMSG, 9, 1},
+};
+
+const upb_msglayout_msginit_v1 google_protobuf_UninterpretedOption_msginit = {
+  &google_protobuf_UninterpretedOption_submsgs[0],
+  &google_protobuf_UninterpretedOption__fields[0],
+  NULL,
+  NULL, /* TODO. default_msg */
+  UPB_ALIGNED_SIZEOF(google_protobuf_UninterpretedOption), 7, 0, false, true
+};
+
+google_protobuf_UninterpretedOption *google_protobuf_UninterpretedOption_new(upb_env *env) {
+  google_protobuf_UninterpretedOption *msg = upb_env_malloc(env, sizeof(*msg));
+  memset(msg, 0, sizeof(*msg));  /* TODO: defaults */
+  return msg;
+}
+google_protobuf_UninterpretedOption *google_protobuf_UninterpretedOption_parsenew(upb_stringview buf, upb_env *env) {
+  google_protobuf_UninterpretedOption *msg = google_protobuf_UninterpretedOption_new(env);
+  if (upb_decode(buf, msg, &google_protobuf_UninterpretedOption_msginit, env)) {
+    return msg;
+  } else {
+    return NULL;
+  }
+}
+char *google_protobuf_UninterpretedOption_serialize(google_protobuf_UninterpretedOption *msg, upb_env *env, size_t *size) {
+  return upb_encode(msg, &google_protobuf_UninterpretedOption_msginit, env, size);
+}
+const upb_array* google_protobuf_UninterpretedOption_name(const google_protobuf_UninterpretedOption *msg) {
+  return msg->name;
+}
+void google_protobuf_UninterpretedOption_set_name(google_protobuf_UninterpretedOption *msg, upb_array* value) {
+  msg->name = value;
+}
+upb_stringview google_protobuf_UninterpretedOption_identifier_value(const google_protobuf_UninterpretedOption *msg) {
+  return msg->identifier_value;
+}
+void google_protobuf_UninterpretedOption_set_identifier_value(google_protobuf_UninterpretedOption *msg, upb_stringview value) {
+  msg->identifier_value = value;
+}
+uint64_t google_protobuf_UninterpretedOption_positive_int_value(const google_protobuf_UninterpretedOption *msg) {
+  return msg->positive_int_value;
+}
+void google_protobuf_UninterpretedOption_set_positive_int_value(google_protobuf_UninterpretedOption *msg, uint64_t value) {
+  msg->positive_int_value = value;
+}
+int64_t google_protobuf_UninterpretedOption_negative_int_value(const google_protobuf_UninterpretedOption *msg) {
+  return msg->negative_int_value;
+}
+void google_protobuf_UninterpretedOption_set_negative_int_value(google_protobuf_UninterpretedOption *msg, int64_t value) {
+  msg->negative_int_value = value;
+}
+double google_protobuf_UninterpretedOption_double_value(const google_protobuf_UninterpretedOption *msg) {
+  return msg->double_value;
+}
+void google_protobuf_UninterpretedOption_set_double_value(google_protobuf_UninterpretedOption *msg, double value) {
+  msg->double_value = value;
+}
+upb_stringview google_protobuf_UninterpretedOption_string_value(const google_protobuf_UninterpretedOption *msg) {
+  return msg->string_value;
+}
+void google_protobuf_UninterpretedOption_set_string_value(google_protobuf_UninterpretedOption *msg, upb_stringview value) {
+  msg->string_value = value;
+}
+upb_stringview google_protobuf_UninterpretedOption_aggregate_value(const google_protobuf_UninterpretedOption *msg) {
+  return msg->aggregate_value;
+}
+void google_protobuf_UninterpretedOption_set_aggregate_value(google_protobuf_UninterpretedOption *msg, upb_stringview value) {
+  msg->aggregate_value = value;
+}
+struct google_protobuf_UninterpretedOption_NamePart {
+  bool is_extension;
+  upb_stringview name_part;
+};
+
+static const upb_msglayout_fieldinit_v1 google_protobuf_UninterpretedOption_NamePart__fields[2] = {
+  {1, offsetof(google_protobuf_UninterpretedOption_NamePart, name_part), 1, UPB_NOT_IN_ONEOF, UPB_NO_SUBMSG, 9, 2},
+  {2, offsetof(google_protobuf_UninterpretedOption_NamePart, is_extension), 0, UPB_NOT_IN_ONEOF, UPB_NO_SUBMSG, 8, 2},
+};
+
+const upb_msglayout_msginit_v1 google_protobuf_UninterpretedOption_NamePart_msginit = {
+  NULL,
+  &google_protobuf_UninterpretedOption_NamePart__fields[0],
+  NULL,
+  NULL, /* TODO. default_msg */
+  UPB_ALIGNED_SIZEOF(google_protobuf_UninterpretedOption_NamePart), 2, 0, false, true
+};
+
+google_protobuf_UninterpretedOption_NamePart *google_protobuf_UninterpretedOption_NamePart_new(upb_env *env) {
+  google_protobuf_UninterpretedOption_NamePart *msg = upb_env_malloc(env, sizeof(*msg));
+  memset(msg, 0, sizeof(*msg));  /* TODO: defaults */
+  return msg;
+}
+google_protobuf_UninterpretedOption_NamePart *google_protobuf_UninterpretedOption_NamePart_parsenew(upb_stringview buf, upb_env *env) {
+  google_protobuf_UninterpretedOption_NamePart *msg = google_protobuf_UninterpretedOption_NamePart_new(env);
+  if (upb_decode(buf, msg, &google_protobuf_UninterpretedOption_NamePart_msginit, env)) {
+    return msg;
+  } else {
+    return NULL;
+  }
+}
+char *google_protobuf_UninterpretedOption_NamePart_serialize(google_protobuf_UninterpretedOption_NamePart *msg, upb_env *env, size_t *size) {
+  return upb_encode(msg, &google_protobuf_UninterpretedOption_NamePart_msginit, env, size);
+}
+upb_stringview google_protobuf_UninterpretedOption_NamePart_name_part(const google_protobuf_UninterpretedOption_NamePart *msg) {
+  return msg->name_part;
+}
+void google_protobuf_UninterpretedOption_NamePart_set_name_part(google_protobuf_UninterpretedOption_NamePart *msg, upb_stringview value) {
+  msg->name_part = value;
+}
+bool google_protobuf_UninterpretedOption_NamePart_is_extension(const google_protobuf_UninterpretedOption_NamePart *msg) {
+  return msg->is_extension;
+}
+void google_protobuf_UninterpretedOption_NamePart_set_is_extension(google_protobuf_UninterpretedOption_NamePart *msg, bool value) {
+  msg->is_extension = value;
+}
+struct google_protobuf_SourceCodeInfo {
+  upb_array* location;
+};
+
+static const upb_msglayout_msginit_v1 *const google_protobuf_SourceCodeInfo_submsgs[1] = {
+  &google_protobuf_SourceCodeInfo_Location_msginit,
+};
+
+static const upb_msglayout_fieldinit_v1 google_protobuf_SourceCodeInfo__fields[1] = {
+  {1, offsetof(google_protobuf_SourceCodeInfo, location), UPB_NO_HASBIT, UPB_NOT_IN_ONEOF, 0, 11, 3},
+};
+
+const upb_msglayout_msginit_v1 google_protobuf_SourceCodeInfo_msginit = {
+  &google_protobuf_SourceCodeInfo_submsgs[0],
+  &google_protobuf_SourceCodeInfo__fields[0],
+  NULL,
+  NULL, /* TODO. default_msg */
+  UPB_ALIGNED_SIZEOF(google_protobuf_SourceCodeInfo), 1, 0, false, true
+};
+
+google_protobuf_SourceCodeInfo *google_protobuf_SourceCodeInfo_new(upb_env *env) {
+  google_protobuf_SourceCodeInfo *msg = upb_env_malloc(env, sizeof(*msg));
+  memset(msg, 0, sizeof(*msg));  /* TODO: defaults */
+  return msg;
+}
+google_protobuf_SourceCodeInfo *google_protobuf_SourceCodeInfo_parsenew(upb_stringview buf, upb_env *env) {
+  google_protobuf_SourceCodeInfo *msg = google_protobuf_SourceCodeInfo_new(env);
+  if (upb_decode(buf, msg, &google_protobuf_SourceCodeInfo_msginit, env)) {
+    return msg;
+  } else {
+    return NULL;
+  }
+}
+char *google_protobuf_SourceCodeInfo_serialize(google_protobuf_SourceCodeInfo *msg, upb_env *env, size_t *size) {
+  return upb_encode(msg, &google_protobuf_SourceCodeInfo_msginit, env, size);
+}
+const upb_array* google_protobuf_SourceCodeInfo_location(const google_protobuf_SourceCodeInfo *msg) {
+  return msg->location;
+}
+void google_protobuf_SourceCodeInfo_set_location(google_protobuf_SourceCodeInfo *msg, upb_array* value) {
+  msg->location = value;
+}
+struct google_protobuf_SourceCodeInfo_Location {
+  upb_stringview leading_comments;
+  upb_stringview trailing_comments;
+  upb_array* path;
+  upb_array* span;
+  upb_array* leading_detached_comments;
+};
+
+static const upb_msglayout_fieldinit_v1 google_protobuf_SourceCodeInfo_Location__fields[5] = {
+  {1, offsetof(google_protobuf_SourceCodeInfo_Location, path), UPB_NO_HASBIT, UPB_NOT_IN_ONEOF, UPB_NO_SUBMSG, 5, 3},
+  {2, offsetof(google_protobuf_SourceCodeInfo_Location, span), UPB_NO_HASBIT, UPB_NOT_IN_ONEOF, UPB_NO_SUBMSG, 5, 3},
+  {3, offsetof(google_protobuf_SourceCodeInfo_Location, leading_comments), 0, UPB_NOT_IN_ONEOF, UPB_NO_SUBMSG, 9, 1},
+  {4, offsetof(google_protobuf_SourceCodeInfo_Location, trailing_comments), 1, UPB_NOT_IN_ONEOF, UPB_NO_SUBMSG, 9, 1},
+  {6, offsetof(google_protobuf_SourceCodeInfo_Location, leading_detached_comments), UPB_NO_HASBIT, UPB_NOT_IN_ONEOF, UPB_NO_SUBMSG, 9, 3},
+};
+
+const upb_msglayout_msginit_v1 google_protobuf_SourceCodeInfo_Location_msginit = {
+  NULL,
+  &google_protobuf_SourceCodeInfo_Location__fields[0],
+  NULL,
+  NULL, /* TODO. default_msg */
+  UPB_ALIGNED_SIZEOF(google_protobuf_SourceCodeInfo_Location), 5, 0, false, true
+};
+
+google_protobuf_SourceCodeInfo_Location *google_protobuf_SourceCodeInfo_Location_new(upb_env *env) {
+  google_protobuf_SourceCodeInfo_Location *msg = upb_env_malloc(env, sizeof(*msg));
+  memset(msg, 0, sizeof(*msg));  /* TODO: defaults */
+  return msg;
+}
+google_protobuf_SourceCodeInfo_Location *google_protobuf_SourceCodeInfo_Location_parsenew(upb_stringview buf, upb_env *env) {
+  google_protobuf_SourceCodeInfo_Location *msg = google_protobuf_SourceCodeInfo_Location_new(env);
+  if (upb_decode(buf, msg, &google_protobuf_SourceCodeInfo_Location_msginit, env)) {
+    return msg;
+  } else {
+    return NULL;
+  }
+}
+char *google_protobuf_SourceCodeInfo_Location_serialize(google_protobuf_SourceCodeInfo_Location *msg, upb_env *env, size_t *size) {
+  return upb_encode(msg, &google_protobuf_SourceCodeInfo_Location_msginit, env, size);
+}
+const upb_array* google_protobuf_SourceCodeInfo_Location_path(const google_protobuf_SourceCodeInfo_Location *msg) {
+  return msg->path;
+}
+void google_protobuf_SourceCodeInfo_Location_set_path(google_protobuf_SourceCodeInfo_Location *msg, upb_array* value) {
+  msg->path = value;
+}
+const upb_array* google_protobuf_SourceCodeInfo_Location_span(const google_protobuf_SourceCodeInfo_Location *msg) {
+  return msg->span;
+}
+void google_protobuf_SourceCodeInfo_Location_set_span(google_protobuf_SourceCodeInfo_Location *msg, upb_array* value) {
+  msg->span = value;
+}
+upb_stringview google_protobuf_SourceCodeInfo_Location_leading_comments(const google_protobuf_SourceCodeInfo_Location *msg) {
+  return msg->leading_comments;
+}
+void google_protobuf_SourceCodeInfo_Location_set_leading_comments(google_protobuf_SourceCodeInfo_Location *msg, upb_stringview value) {
+  msg->leading_comments = value;
+}
+upb_stringview google_protobuf_SourceCodeInfo_Location_trailing_comments(const google_protobuf_SourceCodeInfo_Location *msg) {
+  return msg->trailing_comments;
+}
+void google_protobuf_SourceCodeInfo_Location_set_trailing_comments(google_protobuf_SourceCodeInfo_Location *msg, upb_stringview value) {
+  msg->trailing_comments = value;
+}
+const upb_array* google_protobuf_SourceCodeInfo_Location_leading_detached_comments(const google_protobuf_SourceCodeInfo_Location *msg) {
+  return msg->leading_detached_comments;
+}
+void google_protobuf_SourceCodeInfo_Location_set_leading_detached_comments(google_protobuf_SourceCodeInfo_Location *msg, upb_array* value) {
+  msg->leading_detached_comments = value;
+}
+struct google_protobuf_GeneratedCodeInfo {
+  upb_array* annotation;
+};
+
+static const upb_msglayout_msginit_v1 *const google_protobuf_GeneratedCodeInfo_submsgs[1] = {
+  &google_protobuf_GeneratedCodeInfo_Annotation_msginit,
+};
+
+static const upb_msglayout_fieldinit_v1 google_protobuf_GeneratedCodeInfo__fields[1] = {
+  {1, offsetof(google_protobuf_GeneratedCodeInfo, annotation), UPB_NO_HASBIT, UPB_NOT_IN_ONEOF, 0, 11, 3},
+};
+
+const upb_msglayout_msginit_v1 google_protobuf_GeneratedCodeInfo_msginit = {
+  &google_protobuf_GeneratedCodeInfo_submsgs[0],
+  &google_protobuf_GeneratedCodeInfo__fields[0],
+  NULL,
+  NULL, /* TODO. default_msg */
+  UPB_ALIGNED_SIZEOF(google_protobuf_GeneratedCodeInfo), 1, 0, false, true
+};
+
+google_protobuf_GeneratedCodeInfo *google_protobuf_GeneratedCodeInfo_new(upb_env *env) {
+  google_protobuf_GeneratedCodeInfo *msg = upb_env_malloc(env, sizeof(*msg));
+  memset(msg, 0, sizeof(*msg));  /* TODO: defaults */
+  return msg;
+}
+google_protobuf_GeneratedCodeInfo *google_protobuf_GeneratedCodeInfo_parsenew(upb_stringview buf, upb_env *env) {
+  google_protobuf_GeneratedCodeInfo *msg = google_protobuf_GeneratedCodeInfo_new(env);
+  if (upb_decode(buf, msg, &google_protobuf_GeneratedCodeInfo_msginit, env)) {
+    return msg;
+  } else {
+    return NULL;
+  }
+}
+char *google_protobuf_GeneratedCodeInfo_serialize(google_protobuf_GeneratedCodeInfo *msg, upb_env *env, size_t *size) {
+  return upb_encode(msg, &google_protobuf_GeneratedCodeInfo_msginit, env, size);
+}
+const upb_array* google_protobuf_GeneratedCodeInfo_annotation(const google_protobuf_GeneratedCodeInfo *msg) {
+  return msg->annotation;
+}
+void google_protobuf_GeneratedCodeInfo_set_annotation(google_protobuf_GeneratedCodeInfo *msg, upb_array* value) {
+  msg->annotation = value;
+}
+struct google_protobuf_GeneratedCodeInfo_Annotation {
+  int32_t begin;
+  int32_t end;
+  upb_stringview source_file;
+  upb_array* path;
+};
+
+static const upb_msglayout_fieldinit_v1 google_protobuf_GeneratedCodeInfo_Annotation__fields[4] = {
+  {1, offsetof(google_protobuf_GeneratedCodeInfo_Annotation, path), UPB_NO_HASBIT, UPB_NOT_IN_ONEOF, UPB_NO_SUBMSG, 5, 3},
+  {2, offsetof(google_protobuf_GeneratedCodeInfo_Annotation, source_file), 2, UPB_NOT_IN_ONEOF, UPB_NO_SUBMSG, 9, 1},
+  {3, offsetof(google_protobuf_GeneratedCodeInfo_Annotation, begin), 0, UPB_NOT_IN_ONEOF, UPB_NO_SUBMSG, 5, 1},
+  {4, offsetof(google_protobuf_GeneratedCodeInfo_Annotation, end), 1, UPB_NOT_IN_ONEOF, UPB_NO_SUBMSG, 5, 1},
+};
+
+const upb_msglayout_msginit_v1 google_protobuf_GeneratedCodeInfo_Annotation_msginit = {
+  NULL,
+  &google_protobuf_GeneratedCodeInfo_Annotation__fields[0],
+  NULL,
+  NULL, /* TODO. default_msg */
+  UPB_ALIGNED_SIZEOF(google_protobuf_GeneratedCodeInfo_Annotation), 4, 0, false, true
+};
+
+google_protobuf_GeneratedCodeInfo_Annotation *google_protobuf_GeneratedCodeInfo_Annotation_new(upb_env *env) {
+  google_protobuf_GeneratedCodeInfo_Annotation *msg = upb_env_malloc(env, sizeof(*msg));
+  memset(msg, 0, sizeof(*msg));  /* TODO: defaults */
+  return msg;
+}
+google_protobuf_GeneratedCodeInfo_Annotation *google_protobuf_GeneratedCodeInfo_Annotation_parsenew(upb_stringview buf, upb_env *env) {
+  google_protobuf_GeneratedCodeInfo_Annotation *msg = google_protobuf_GeneratedCodeInfo_Annotation_new(env);
+  if (upb_decode(buf, msg, &google_protobuf_GeneratedCodeInfo_Annotation_msginit, env)) {
+    return msg;
+  } else {
+    return NULL;
+  }
+}
+char *google_protobuf_GeneratedCodeInfo_Annotation_serialize(google_protobuf_GeneratedCodeInfo_Annotation *msg, upb_env *env, size_t *size) {
+  return upb_encode(msg, &google_protobuf_GeneratedCodeInfo_Annotation_msginit, env, size);
+}
+const upb_array* google_protobuf_GeneratedCodeInfo_Annotation_path(const google_protobuf_GeneratedCodeInfo_Annotation *msg) {
+  return msg->path;
+}
+void google_protobuf_GeneratedCodeInfo_Annotation_set_path(google_protobuf_GeneratedCodeInfo_Annotation *msg, upb_array* value) {
+  msg->path = value;
+}
+upb_stringview google_protobuf_GeneratedCodeInfo_Annotation_source_file(const google_protobuf_GeneratedCodeInfo_Annotation *msg) {
+  return msg->source_file;
+}
+void google_protobuf_GeneratedCodeInfo_Annotation_set_source_file(google_protobuf_GeneratedCodeInfo_Annotation *msg, upb_stringview value) {
+  msg->source_file = value;
+}
+int32_t google_protobuf_GeneratedCodeInfo_Annotation_begin(const google_protobuf_GeneratedCodeInfo_Annotation *msg) {
+  return msg->begin;
+}
+void google_protobuf_GeneratedCodeInfo_Annotation_set_begin(google_protobuf_GeneratedCodeInfo_Annotation *msg, int32_t value) {
+  msg->begin = value;
+}
+int32_t google_protobuf_GeneratedCodeInfo_Annotation_end(const google_protobuf_GeneratedCodeInfo_Annotation *msg) {
+  return msg->end;
+}
+void google_protobuf_GeneratedCodeInfo_Annotation_set_end(google_protobuf_GeneratedCodeInfo_Annotation *msg, int32_t value) {
+  msg->end = value;
+}
 
 
 /* Maps descriptor type -> upb field type.  */
-static const uint8_t upb_desctype_to_fieldtype[] = {
+const uint8_t upb_desctype_to_fieldtype[] = {
   UPB_WIRE_TYPE_END_GROUP,  /* ENDGROUP */
   UPB_TYPE_DOUBLE,          /* DOUBLE */
   UPB_TYPE_FLOAT,           /* FLOAT */
@@ -215,7 +2114,7 @@ static upb_array *upb_getorcreatearr(upb_decstate *d,
     if (!arr) {
       return NULL;
     }
-    upb_array_init(arr, upb_desctype_to_fieldtype[field->type],
+    upb_array_init(arr, upb_desctype_to_fieldtype[field->descriptortype],
                    upb_arena_alloc(upb_env_arena(d->env)));
     *(upb_array**)&frame->msg[field->offset] = arr;
   }
@@ -268,7 +2167,8 @@ static bool upb_decode_submsg(upb_decstate *d,
                               const char *limit,
                               const upb_msglayout_fieldinit_v1 *field,
                               int group_number) {
-  char *submsg = *(void**)&frame->msg[field->offset];
+  char *submsg_slot = upb_decode_prepareslot(d, frame, field);
+  char *submsg = *(void**)submsg_slot;
   const upb_msglayout_msginit_v1 *subm;
 
   UPB_ASSERT(field->submsg_index != UPB_NO_SUBMSG);
@@ -280,7 +2180,7 @@ static bool upb_decode_submsg(upb_decstate *d,
     CHK(submsg);
     submsg = upb_msg_init(
         submsg, (upb_msglayout*)subm, upb_arena_alloc(upb_env_arena(d->env)));
-    *(void**)&frame->msg[field->offset] = submsg;
+    *(void**)submsg_slot = submsg;
   }
 
   upb_decode_message(d, limit, group_number, submsg, subm);
@@ -298,7 +2198,7 @@ static bool upb_decode_varintfield(upb_decstate *d, upb_decframe *frame,
   CHK(field_mem);
   CHK(upb_decode_varint(&d->ptr, frame->limit, &val));
 
-  switch ((upb_descriptortype_t)field->type) {
+  switch ((upb_descriptortype_t)field->descriptortype) {
     case UPB_DESCRIPTOR_TYPE_INT64:
     case UPB_DESCRIPTOR_TYPE_UINT64:
       memcpy(field_mem, &val, sizeof(val));
@@ -343,7 +2243,7 @@ static bool upb_decode_64bitfield(upb_decstate *d, upb_decframe *frame,
   CHK(field_mem);
   CHK(upb_decode_64bit(&d->ptr, frame->limit, &val));
 
-  switch ((upb_descriptortype_t)field->type) {
+  switch ((upb_descriptortype_t)field->descriptortype) {
     case UPB_DESCRIPTOR_TYPE_DOUBLE:
     case UPB_DESCRIPTOR_TYPE_FIXED64:
     case UPB_DESCRIPTOR_TYPE_SFIXED64:
@@ -367,7 +2267,7 @@ static bool upb_decode_32bitfield(upb_decstate *d, upb_decframe *frame,
   CHK(field_mem);
   CHK(upb_decode_32bit(&d->ptr, frame->limit, &val));
 
-  switch ((upb_descriptortype_t)field->type) {
+  switch ((upb_descriptortype_t)field->descriptortype) {
     case UPB_DESCRIPTOR_TYPE_FLOAT:
     case UPB_DESCRIPTOR_TYPE_FIXED32:
     case UPB_DESCRIPTOR_TYPE_SFIXED32:
@@ -415,7 +2315,7 @@ static bool upb_decode_toarray(upb_decstate *d, upb_decframe *frame,
   return true; \
 }
 
-  switch ((upb_descriptortype_t)field->type) {
+  switch ((upb_descriptortype_t)field->descriptortype) {
     case UPB_DESCRIPTOR_TYPE_STRING:
     case UPB_DESCRIPTOR_TYPE_BYTES: {
       void *field_mem = upb_array_add(arr, 1);
@@ -445,9 +2345,31 @@ static bool upb_decode_toarray(upb_decstate *d, upb_decframe *frame,
       VARINT_CASE(int32_t, upb_zzdecode_32);
     case UPB_DESCRIPTOR_TYPE_SINT64:
       VARINT_CASE(int64_t, upb_zzdecode_64);
-    case UPB_DESCRIPTOR_TYPE_MESSAGE:
+    case UPB_DESCRIPTOR_TYPE_MESSAGE: {
+      const upb_msglayout_msginit_v1 *subm;
+      char *submsg;
+      void *field_mem;
+
       CHK(val.size <= (size_t)(frame->limit - val.data));
-      return upb_decode_submsg(d, frame, val.data + val.size, field, 0);
+      d->ptr -= val.size;
+
+      /* Create elemente message. */
+      UPB_ASSERT(field->submsg_index != UPB_NO_SUBMSG);
+      subm = frame->m->submsgs[field->submsg_index];
+      UPB_ASSERT(subm);
+
+      submsg = upb_env_malloc(d->env, upb_msg_sizeof((upb_msglayout *)subm));
+      CHK(submsg);
+      submsg = upb_msg_init(submsg, (upb_msglayout*)subm,
+                            upb_arena_alloc(upb_env_arena(d->env)));
+
+      field_mem = upb_array_add(arr, 1);
+      CHK(field_mem);
+      *(void**)field_mem = submsg;
+
+      return upb_decode_message(
+          d, val.data + val.size, frame->group_number, submsg, subm);
+    }
     case UPB_DESCRIPTOR_TYPE_GROUP:
       return upb_append_unknown(d, frame, field_start);
   }
@@ -465,7 +2387,7 @@ static bool upb_decode_delimitedfield(upb_decstate *d, upb_decframe *frame,
   if (field->label == UPB_LABEL_REPEATED) {
     return upb_decode_toarray(d, frame, field_start, field, val);
   } else {
-    switch ((upb_descriptortype_t)field->type) {
+    switch ((upb_descriptortype_t)field->descriptortype) {
       case UPB_DESCRIPTOR_TYPE_STRING:
       case UPB_DESCRIPTOR_TYPE_BYTES: {
         void *field_mem = upb_decode_prepareslot(d, frame, field);
@@ -475,6 +2397,7 @@ static bool upb_decode_delimitedfield(upb_decstate *d, upb_decframe *frame,
       }
       case UPB_DESCRIPTOR_TYPE_MESSAGE:
         CHK(val.size <= (size_t)(frame->limit - val.data));
+        d->ptr -= val.size;
         CHK(upb_decode_submsg(d, frame, val.data + val.size, field, 0));
         break;
       default:
@@ -519,7 +2442,7 @@ static bool upb_decode_field(upb_decstate *d, upb_decframe *frame) {
       case UPB_WIRE_TYPE_DELIMITED:
         return upb_decode_delimitedfield(d, frame, field_start, field);
       case UPB_WIRE_TYPE_START_GROUP:
-        CHK(field->type == UPB_DESCRIPTOR_TYPE_GROUP);
+        CHK(field->descriptortype == UPB_DESCRIPTOR_TYPE_GROUP);
         return upb_decode_submsg(d, frame, frame->limit, field, field_number);
       case UPB_WIRE_TYPE_END_GROUP:
         CHK(frame->group_number == field_number)
@@ -3004,7 +4927,7 @@ static bool upb_encode_growbuffer(upb_encstate *e, size_t bytes) {
   CHK(new_buf);
 
   /* We want previous data at the end, realloc() put it at the beginning. */
-  memmove(e->limit - old_size, e->buf, old_size);
+  memmove(new_buf + new_size - old_size, e->buf, old_size);
 
   e->ptr = new_buf + new_size - (e->limit - e->ptr);
   e->limit = new_buf + new_size;
@@ -3100,7 +5023,7 @@ static bool upb_encode_array(upb_encstate *e, const char *field_mem,
     return true;
   }
 
-  UPB_ASSERT(arr->type == upb_desctype_to_fieldtype2[f->type]);
+  UPB_ASSERT(arr->type == upb_desctype_to_fieldtype2[f->descriptortype]);
 
 #define VARINT_CASE(ctype, encode) { \
   ctype *start = arr->data; \
@@ -3115,7 +5038,7 @@ static bool upb_encode_array(upb_encstate *e, const char *field_mem,
 break; \
 do { ; } while(0)
 
-  switch (f->type) {
+  switch (f->descriptortype) {
     case UPB_DESCRIPTOR_TYPE_DOUBLE:
       CHK(upb_put_fixedarray(e, arr, sizeof(double)));
       break;
@@ -3134,9 +5057,10 @@ do { ; } while(0)
     case UPB_DESCRIPTOR_TYPE_UINT64:
       VARINT_CASE(uint64_t, *ptr);
     case UPB_DESCRIPTOR_TYPE_UINT32:
+      VARINT_CASE(uint32_t, *ptr);
     case UPB_DESCRIPTOR_TYPE_INT32:
     case UPB_DESCRIPTOR_TYPE_ENUM:
-      VARINT_CASE(uint32_t, *ptr);
+      VARINT_CASE(int32_t, (int64_t)*ptr);
     case UPB_DESCRIPTOR_TYPE_BOOL:
       VARINT_CASE(bool, *ptr);
     case UPB_DESCRIPTOR_TYPE_SINT32:
@@ -3205,7 +5129,7 @@ static bool upb_encode_scalarfield(upb_encstate *e, const char *field_mem,
       upb_put_tag(e, f->number, wire_type); \
 } while(0)
 
-  switch (f->type) {
+  switch (f->descriptortype) {
     case UPB_DESCRIPTOR_TYPE_DOUBLE:
       CASE(double, double, UPB_WIRE_TYPE_64BIT, val);
     case UPB_DESCRIPTOR_TYPE_FLOAT:
@@ -3214,9 +5138,10 @@ static bool upb_encode_scalarfield(upb_encstate *e, const char *field_mem,
     case UPB_DESCRIPTOR_TYPE_UINT64:
       CASE(uint64_t, varint, UPB_WIRE_TYPE_VARINT, val);
     case UPB_DESCRIPTOR_TYPE_UINT32:
+      CASE(uint32_t, varint, UPB_WIRE_TYPE_VARINT, val);
     case UPB_DESCRIPTOR_TYPE_INT32:
     case UPB_DESCRIPTOR_TYPE_ENUM:
-      CASE(uint32_t, varint, UPB_WIRE_TYPE_VARINT, val);
+      CASE(int32_t, varint, UPB_WIRE_TYPE_VARINT, (int64_t)val);
     case UPB_DESCRIPTOR_TYPE_SFIXED64:
     case UPB_DESCRIPTOR_TYPE_FIXED64:
       CASE(uint64_t, fixed64, UPB_WIRE_TYPE_64BIT, val);
@@ -3283,7 +5208,7 @@ bool upb_encode_message(upb_encstate* e, const char *msg,
                         const upb_msglayout_msginit_v1 *m,
                         size_t *size) {
   int i;
-  char *buf_end = e->ptr;
+  size_t pre_len = e->limit - e->ptr;
 
   if (msg == NULL) {
     return true;
@@ -3296,12 +5221,18 @@ bool upb_encode_message(upb_encstate* e, const char *msg,
       CHK(upb_encode_array(e, msg + f->offset, m, f));
     } else {
       if (upb_encode_hasscalarfield(msg, m, f)) {
-        CHK(upb_encode_scalarfield(e, msg + f->offset, m, f, !m->is_proto2));
+        if (f->oneof_index == UPB_NOT_IN_ONEOF) {
+          CHK(upb_encode_scalarfield(e, msg + f->offset, m, f, !m->is_proto2));
+        } else {
+          const upb_msglayout_oneofinit_v1 *o = &m->oneofs[f->oneof_index];
+          CHK(upb_encode_scalarfield(e, msg + o->data_offset,
+                                     m, f, !m->is_proto2));
+        }
       }
     }
   }
 
-  *size = buf_end - e->ptr;
+  *size = (e->limit - e->ptr) - pre_len;
   return true;
 }
 
@@ -4095,9 +6026,9 @@ static size_t upb_msgval_sizeof(upb_fieldtype_t type) {
       return 4;
     case UPB_TYPE_BOOL:
       return 1;
-    case UPB_TYPE_BYTES:
     case UPB_TYPE_MESSAGE:
       return sizeof(void*);
+    case UPB_TYPE_BYTES:
     case UPB_TYPE_STRING:
       return sizeof(upb_stringview);
   }
@@ -4108,7 +6039,7 @@ static uint8_t upb_msg_fieldsize(const upb_msglayout_fieldinit_v1 *field) {
   if (field->label == UPB_LABEL_REPEATED) {
     return sizeof(void*);
   } else {
-    return upb_msgval_sizeof(field->type);
+    return upb_msgval_sizeof(upb_desctype_to_fieldtype[field->descriptortype]);
   }
 }
 
@@ -4252,10 +6183,11 @@ static bool upb_msglayout_initdefault(upb_msglayout *l, const upb_msgdef *m) {
   return true;
 }
 
-static upb_msglayout *upb_msglayout_new(const upb_msgdef *m) {
+static bool upb_msglayout_init(const upb_msgdef *m,
+                               upb_msglayout *l,
+                               upb_msgfactory *factory) {
   upb_msg_field_iter it;
   upb_msg_oneof_iter oit;
-  upb_msglayout *l;
   size_t hasbit;
   size_t submsg_count = 0;
   const upb_msglayout_msginit_v1 **submsgs;
@@ -4271,9 +6203,6 @@ static upb_msglayout *upb_msglayout_new(const upb_msgdef *m) {
     }
   }
 
-  l = upb_gmalloc(sizeof(*l));
-  if (!l) return NULL;
-
   memset(l, 0, sizeof(*l));
 
   fields = upb_gmalloc(upb_msgdef_numfields(m) * sizeof(*fields));
@@ -4284,11 +6213,10 @@ static upb_msglayout *upb_msglayout_new(const upb_msgdef *m) {
       (!submsgs && submsg_count) ||
       (!oneofs && upb_msgdef_numoneofs(m))) {
     /* OOM. */
-    upb_gfree(l);
     upb_gfree(fields);
     upb_gfree(submsgs);
     upb_gfree(oneofs);
-    return NULL;
+    return false;
   }
 
   l->data.field_count = upb_msgdef_numfields(m);
@@ -4308,6 +6236,7 @@ static upb_msglayout *upb_msglayout_new(const upb_msgdef *m) {
    */
 
   /* Allocate hasbits and set basic field attributes. */
+  submsg_count = 0;
   for (upb_msg_field_begin(&it, m), hasbit = 0;
        !upb_msg_field_done(&it);
        upb_msg_field_next(&it)) {
@@ -4315,7 +6244,7 @@ static upb_msglayout *upb_msglayout_new(const upb_msgdef *m) {
     upb_msglayout_fieldinit_v1 *field = &fields[upb_fielddef_index(f)];
 
     field->number = upb_fielddef_number(f);
-    field->type = upb_fielddef_type(f);
+    field->descriptortype = upb_fielddef_descriptortype(f);
     field->label = upb_fielddef_label(f);
 
     if (upb_fielddef_containingoneof(f)) {
@@ -4324,8 +6253,19 @@ static upb_msglayout *upb_msglayout_new(const upb_msgdef *m) {
       field->oneof_index = UPB_NOT_IN_ONEOF;
     }
 
+    if (upb_fielddef_issubmsg(f)) {
+      const upb_msglayout *sub_layout =
+          upb_msgfactory_getlayout(factory, upb_fielddef_msgsubdef(f));
+      field->submsg_index = submsg_count++;
+      submsgs[field->submsg_index] = &sub_layout->data;
+    } else {
+      field->submsg_index = UPB_NO_SUBMSG;
+    }
+
     if (upb_fielddef_haspresence(f) && !upb_fielddef_containingoneof(f)) {
       field->hasbit = hasbit++;
+    } else {
+      field->hasbit = UPB_NO_HASBIT;
     }
   }
 
@@ -4375,12 +6315,7 @@ static upb_msglayout *upb_msglayout_new(const upb_msgdef *m) {
    * alignment.  TODO: track overall alignment for real? */
   l->data.size = align_up(l->data.size, 8);
 
-  if (upb_msglayout_initdefault(l, m)) {
-    return l;
-  } else {
-    upb_msglayout_free(l);
-    return NULL;
-  }
+  return upb_msglayout_initdefault(l, m);
 }
 
 
@@ -4435,10 +6370,14 @@ const upb_msglayout *upb_msgfactory_getlayout(upb_msgfactory *f,
     UPB_ASSERT(upb_value_getptr(v));
     return upb_value_getptr(v);
   } else {
+    /* In case of circular dependency, layout has to be inserted first. */
+    upb_msglayout *l = upb_gmalloc(sizeof(*l));
     upb_msgfactory *mutable_f = (void*)f;
-    upb_msglayout *l = upb_msglayout_new(m);
     upb_inttable_insertptr(&mutable_f->layouts, m, upb_value_ptr(l));
     UPB_ASSERT(l);
+    if (!upb_msglayout_init(m, l, f)) {
+      upb_msglayout_free(l);
+    }
     return l;
   }
 }
diff --git a/php/ext/google/protobuf/upb.h b/php/ext/google/protobuf/upb.h
index 10371e8b..a263db30 100644
--- a/php/ext/google/protobuf/upb.h
+++ b/php/ext/google/protobuf/upb.h
@@ -1,4 +1,111 @@
 // Amalgamated source file
+
+// php.h intentionally defined NDEBUG. We have to define this macro in order to
+// be used together with php.h
+#ifndef NDEBUG
+#define NDEBUG
+#endif
+
+/*
+** upb_decode: parsing into a upb_msg using a upb_msglayout.
+*/
+
+#ifndef UPB_DECODE_H_
+#define UPB_DECODE_H_
+
+/*
+** upb::Message is a representation for protobuf messages.
+**
+** However it differs from other common representations like
+** google::protobuf::Message in one key way: it does not prescribe any
+** ownership between messages and submessages, and it relies on the
+** client to delete each message/submessage/array/map at the appropriate
+** time.
+**
+** A client can access a upb::Message without knowing anything about
+** ownership semantics, but to create or mutate a message a user needs
+** to implement the memory management themselves.
+**
+** Currently all messages, arrays, and maps store a upb_alloc* internally.
+** Mutating operations use this when they require dynamically-allocated
+** memory.  We could potentially eliminate this size overhead later by
+** letting the user flip a bit on the factory that prevents this from
+** being stored.  The user would then need to use separate functions where
+** the upb_alloc* is passed explicitly.  However for handlers to populate
+** such structures, they would need a place to store this upb_alloc* during
+** parsing; upb_handlers don't currently have a good way to accommodate this.
+**
+** TODO: UTF-8 checking?
+**/
+
+#ifndef UPB_MSG_H_
+#define UPB_MSG_H_
+
+/*
+** Defs are upb's internal representation of the constructs that can appear
+** in a .proto file:
+**
+** - upb::MessageDef (upb_msgdef): describes a "message" construct.
+** - upb::FieldDef (upb_fielddef): describes a message field.
+** - upb::FileDef (upb_filedef): describes a .proto file and its defs.
+** - upb::EnumDef (upb_enumdef): describes an enum.
+** - upb::OneofDef (upb_oneofdef): describes a oneof.
+** - upb::Def (upb_def): base class of all the others.
+**
+** TODO: definitions of services.
+**
+** Like upb_refcounted objects, defs are mutable only until frozen, and are
+** only thread-safe once frozen.
+**
+** This is a mixed C/C++ interface that offers a full API to both languages.
+** See the top-level README for more information.
+*/
+
+#ifndef UPB_DEF_H_
+#define UPB_DEF_H_
+
+/*
+** upb::RefCounted (upb_refcounted)
+**
+** A refcounting scheme that supports circular refs.  It accomplishes this by
+** partitioning the set of objects into groups such that no cycle spans groups;
+** we can then reference-count the group as a whole and ignore refs within the
+** group.  When objects are mutable, these groups are computed very
+** conservatively; we group any objects that have ever had a link between them.
+** When objects are frozen, we compute strongly-connected components which
+** allows us to be precise and only group objects that are actually cyclic.
+**
+** This is a mixed C/C++ interface that offers a full API to both languages.
+** See the top-level README for more information.
+*/
+
+#ifndef UPB_REFCOUNTED_H_
+#define UPB_REFCOUNTED_H_
+
+/*
+** upb_table
+**
+** This header is INTERNAL-ONLY!  Its interfaces are not public or stable!
+** This file defines very fast int->upb_value (inttable) and string->upb_value
+** (strtable) hash tables.
+**
+** The table uses chained scatter with Brent's variation (inspired by the Lua
+** implementation of hash tables).  The hash function for strings is Austin
+** Appleby's "MurmurHash."
+**
+** The inttable uses uintptr_t as its key, which guarantees it can be used to
+** store pointers or integers of at least 32 bits (upb isn't really useful on
+** systems where sizeof(void*) < 4).
+**
+** The table must be homogenous (all values of the same type).  In debug
+** mode, we check this on insert and lookup.
+*/
+
+#ifndef UPB_TABLE_H_
+#define UPB_TABLE_H_
+
+#include <stdint.h>
+#include <string.h>
 /*
 ** This file contains shared definitions that are widely used across upb.
 **
@@ -9,12 +116,6 @@
 #ifndef UPB_H_
 #define UPB_H_
 
-// php.h intentionally defined NDEBUG. We have to define this macro in order to
-// be used together with php.h
-#ifndef NDEBUG
-#define NDEBUG
-#endif
-
 #include <assert.h>
 #include <stdarg.h>
 #include <stdbool.h>
@@ -743,106 +844,6 @@ template <int N> class upb::InlinedEnvironment : public upb::Environment {
 
 
 #endif  /* UPB_H_ */
-/*
-** upb_decode: parsing into a upb_msg using a upb_msglayout.
-*/
-
-#ifndef UPB_DECODE_H_
-#define UPB_DECODE_H_
-
-/*
-** upb::Message is a representation for protobuf messages.
-**
-** However it differs from other common representations like
-** google::protobuf::Message in one key way: it does not prescribe any
-** ownership between messages and submessages, and it relies on the
-** client to delete each message/submessage/array/map at the appropriate
-** time.
-**
-** A client can access a upb::Message without knowing anything about
-** ownership semantics, but to create or mutate a message a user needs
-** to implement the memory management themselves.
-**
-** Currently all messages, arrays, and maps store a upb_alloc* internally.
-** Mutating operations use this when they require dynamically-allocated
-** memory.  We could potentially eliminate this size overhead later by
-** letting the user flip a bit on the factory that prevents this from
-** being stored.  The user would then need to use separate functions where
-** the upb_alloc* is passed explicitly.  However for handlers to populate
-** such structures, they would need a place to store this upb_alloc* during
-** parsing; upb_handlers don't currently have a good way to accommodate this.
-**
-** TODO: UTF-8 checking?
-**/
-
-#ifndef UPB_MSG_H_
-#define UPB_MSG_H_
-
-/*
-** Defs are upb's internal representation of the constructs that can appear
-** in a .proto file:
-**
-** - upb::MessageDef (upb_msgdef): describes a "message" construct.
-** - upb::FieldDef (upb_fielddef): describes a message field.
-** - upb::FileDef (upb_filedef): describes a .proto file and its defs.
-** - upb::EnumDef (upb_enumdef): describes an enum.
-** - upb::OneofDef (upb_oneofdef): describes a oneof.
-** - upb::Def (upb_def): base class of all the others.
-**
-** TODO: definitions of services.
-**
-** Like upb_refcounted objects, defs are mutable only until frozen, and are
-** only thread-safe once frozen.
-**
-** This is a mixed C/C++ interface that offers a full API to both languages.
-** See the top-level README for more information.
-*/
-
-#ifndef UPB_DEF_H_
-#define UPB_DEF_H_
-
-/*
-** upb::RefCounted (upb_refcounted)
-**
-** A refcounting scheme that supports circular refs.  It accomplishes this by
-** partitioning the set of objects into groups such that no cycle spans groups;
-** we can then reference-count the group as a whole and ignore refs within the
-** group.  When objects are mutable, these groups are computed very
-** conservatively; we group any objects that have ever had a link between them.
-** When objects are frozen, we compute strongly-connected components which
-** allows us to be precise and only group objects that are actually cyclic.
-**
-** This is a mixed C/C++ interface that offers a full API to both languages.
-** See the top-level README for more information.
-*/
-
-#ifndef UPB_REFCOUNTED_H_
-#define UPB_REFCOUNTED_H_
-
-/*
-** upb_table
-**
-** This header is INTERNAL-ONLY!  Its interfaces are not public or stable!
-** This file defines very fast int->upb_value (inttable) and string->upb_value
-** (strtable) hash tables.
-**
-** The table uses chained scatter with Brent's variation (inspired by the Lua
-** implementation of hash tables).  The hash function for strings is Austin
-** Appleby's "MurmurHash."
-**
-** The inttable uses uintptr_t as its key, which guarantees it can be used to
-** store pointers or integers of at least 32 bits (upb isn't really useful on
-** systems where sizeof(void*) < 4).
-**
-** The table must be homogenous (all values of the same type).  In debug
-** mode, we check this on insert and lookup.
-*/
-
-#ifndef UPB_TABLE_H_
-#define UPB_TABLE_H_
-
-#include <stdint.h>
-#include <string.h>
 
 #ifdef __cplusplus
 extern "C" {
@@ -2001,6 +2002,9 @@ typedef enum {
   UPB_SYNTAX_PROTO3 = 3
 } upb_syntax_t;
 
+/* Maps descriptor type -> upb field type.  */
+extern const uint8_t upb_desctype_to_fieldtype[];
+
 /* Maximum field number allowed for FieldDefs.  This is an inherent limit of the
  * protobuf wire format. */
 #define UPB_MAX_FIELDNUMBER ((1 << 29) - 1)
@@ -6747,7 +6751,7 @@ typedef struct {
   uint16_t hasbit;        /* UPB_NO_HASBIT if no hasbit. */
   uint16_t oneof_index;   /* UPB_NOT_IN_ONEOF if not in a oneof. */
   uint16_t submsg_index;  /* UPB_NO_SUBMSG if no submsg. */
-  uint8_t type;
+  uint8_t descriptortype;
   uint8_t label;
 } upb_msglayout_fieldinit_v1;
 
@@ -6793,6 +6797,714 @@ UPB_END_EXTERN_C
 
 #endif  /* UPB_DECODE_H_ */
 /*
+** upb_encode: parsing into a upb_msg using a upb_msglayout.
+*/
+
+#ifndef UPB_ENCODE_H_
+#define UPB_ENCODE_H_
+
+
+UPB_BEGIN_EXTERN_C
+
+char *upb_encode(const void *msg, const upb_msglayout_msginit_v1 *l,
+                 upb_env *env, size_t *size);
+
+UPB_END_EXTERN_C
+
+#endif  /* UPB_ENCODE_H_ */
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     google/protobuf/descriptor.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef GOOGLE_PROTOBUF_DESCRIPTOR_PROTO_UPB_H_
+#define GOOGLE_PROTOBUF_DESCRIPTOR_PROTO_UPB_H_
+
+
+UPB_BEGIN_EXTERN_C
+
+struct google_protobuf_FileDescriptorSet;
+typedef struct google_protobuf_FileDescriptorSet google_protobuf_FileDescriptorSet;
+struct google_protobuf_FileDescriptorProto;
+typedef struct google_protobuf_FileDescriptorProto google_protobuf_FileDescriptorProto;
+struct google_protobuf_DescriptorProto;
+typedef struct google_protobuf_DescriptorProto google_protobuf_DescriptorProto;
+struct google_protobuf_DescriptorProto_ExtensionRange;
+typedef struct google_protobuf_DescriptorProto_ExtensionRange google_protobuf_DescriptorProto_ExtensionRange;
+struct google_protobuf_DescriptorProto_ReservedRange;
+typedef struct google_protobuf_DescriptorProto_ReservedRange google_protobuf_DescriptorProto_ReservedRange;
+struct google_protobuf_ExtensionRangeOptions;
+typedef struct google_protobuf_ExtensionRangeOptions google_protobuf_ExtensionRangeOptions;
+struct google_protobuf_FieldDescriptorProto;
+typedef struct google_protobuf_FieldDescriptorProto google_protobuf_FieldDescriptorProto;
+struct google_protobuf_OneofDescriptorProto;
+typedef struct google_protobuf_OneofDescriptorProto google_protobuf_OneofDescriptorProto;
+struct google_protobuf_EnumDescriptorProto;
+typedef struct google_protobuf_EnumDescriptorProto google_protobuf_EnumDescriptorProto;
+struct google_protobuf_EnumDescriptorProto_EnumReservedRange;
+typedef struct google_protobuf_EnumDescriptorProto_EnumReservedRange google_protobuf_EnumDescriptorProto_EnumReservedRange;
+struct google_protobuf_EnumValueDescriptorProto;
+typedef struct google_protobuf_EnumValueDescriptorProto google_protobuf_EnumValueDescriptorProto;
+struct google_protobuf_ServiceDescriptorProto;
+typedef struct google_protobuf_ServiceDescriptorProto google_protobuf_ServiceDescriptorProto;
+struct google_protobuf_MethodDescriptorProto;
+typedef struct google_protobuf_MethodDescriptorProto google_protobuf_MethodDescriptorProto;
+struct google_protobuf_FileOptions;
+typedef struct google_protobuf_FileOptions google_protobuf_FileOptions;
+struct google_protobuf_MessageOptions;
+typedef struct google_protobuf_MessageOptions google_protobuf_MessageOptions;
+struct google_protobuf_FieldOptions;
+typedef struct google_protobuf_FieldOptions google_protobuf_FieldOptions;
+struct google_protobuf_OneofOptions;
+typedef struct google_protobuf_OneofOptions google_protobuf_OneofOptions;
+struct google_protobuf_EnumOptions;
+typedef struct google_protobuf_EnumOptions google_protobuf_EnumOptions;
+struct google_protobuf_EnumValueOptions;
+typedef struct google_protobuf_EnumValueOptions google_protobuf_EnumValueOptions;
+struct google_protobuf_ServiceOptions;
+typedef struct google_protobuf_ServiceOptions google_protobuf_ServiceOptions;
+struct google_protobuf_MethodOptions;
+typedef struct google_protobuf_MethodOptions google_protobuf_MethodOptions;
+struct google_protobuf_UninterpretedOption;
+typedef struct google_protobuf_UninterpretedOption google_protobuf_UninterpretedOption;
+struct google_protobuf_UninterpretedOption_NamePart;
+typedef struct google_protobuf_UninterpretedOption_NamePart google_protobuf_UninterpretedOption_NamePart;
+struct google_protobuf_SourceCodeInfo;
+typedef struct google_protobuf_SourceCodeInfo google_protobuf_SourceCodeInfo;
+struct google_protobuf_SourceCodeInfo_Location;
+typedef struct google_protobuf_SourceCodeInfo_Location google_protobuf_SourceCodeInfo_Location;
+struct google_protobuf_GeneratedCodeInfo;
+typedef struct google_protobuf_GeneratedCodeInfo google_protobuf_GeneratedCodeInfo;
+struct google_protobuf_GeneratedCodeInfo_Annotation;
+typedef struct google_protobuf_GeneratedCodeInfo_Annotation google_protobuf_GeneratedCodeInfo_Annotation;
+/* Enums */
+
+typedef enum {
+  google_protobuf_FieldDescriptorProto_LABEL_OPTIONAL = 1,
+  google_protobuf_FieldDescriptorProto_LABEL_REQUIRED = 2,
+  google_protobuf_FieldDescriptorProto_LABEL_REPEATED = 3
+} google_protobuf_FieldDescriptorProto_Label;
+
+typedef enum {
+  google_protobuf_FieldDescriptorProto_TYPE_DOUBLE = 1,
+  google_protobuf_FieldDescriptorProto_TYPE_FLOAT = 2,
+  google_protobuf_FieldDescriptorProto_TYPE_INT64 = 3,
+  google_protobuf_FieldDescriptorProto_TYPE_UINT64 = 4,
+  google_protobuf_FieldDescriptorProto_TYPE_INT32 = 5,
+  google_protobuf_FieldDescriptorProto_TYPE_FIXED64 = 6,
+  google_protobuf_FieldDescriptorProto_TYPE_FIXED32 = 7,
+  google_protobuf_FieldDescriptorProto_TYPE_BOOL = 8,
+  google_protobuf_FieldDescriptorProto_TYPE_STRING = 9,
+  google_protobuf_FieldDescriptorProto_TYPE_GROUP = 10,
+  google_protobuf_FieldDescriptorProto_TYPE_MESSAGE = 11,
+  google_protobuf_FieldDescriptorProto_TYPE_BYTES = 12,
+  google_protobuf_FieldDescriptorProto_TYPE_UINT32 = 13,
+  google_protobuf_FieldDescriptorProto_TYPE_ENUM = 14,
+  google_protobuf_FieldDescriptorProto_TYPE_SFIXED32 = 15,
+  google_protobuf_FieldDescriptorProto_TYPE_SFIXED64 = 16,
+  google_protobuf_FieldDescriptorProto_TYPE_SINT32 = 17,
+  google_protobuf_FieldDescriptorProto_TYPE_SINT64 = 18
+} google_protobuf_FieldDescriptorProto_Type;
+
+typedef enum {
+  google_protobuf_FieldOptions_STRING = 0,
+  google_protobuf_FieldOptions_CORD = 1,
+  google_protobuf_FieldOptions_STRING_PIECE = 2
+} google_protobuf_FieldOptions_CType;
+
+typedef enum {
+  google_protobuf_FieldOptions_JS_NORMAL = 0,
+  google_protobuf_FieldOptions_JS_STRING = 1,
+  google_protobuf_FieldOptions_JS_NUMBER = 2
+} google_protobuf_FieldOptions_JSType;
+
+typedef enum {
+  google_protobuf_FileOptions_SPEED = 1,
+  google_protobuf_FileOptions_CODE_SIZE = 2,
+  google_protobuf_FileOptions_LITE_RUNTIME = 3
+} google_protobuf_FileOptions_OptimizeMode;
+
+typedef enum {
+  google_protobuf_MethodOptions_IDEMPOTENCY_UNKNOWN = 0,
+  google_protobuf_MethodOptions_NO_SIDE_EFFECTS = 1,
+  google_protobuf_MethodOptions_IDEMPOTENT = 2
+} google_protobuf_MethodOptions_IdempotencyLevel;
+
+/* google_protobuf_FileDescriptorSet */
+extern const upb_msglayout_msginit_v1 google_protobuf_FileDescriptorSet_msginit;
+google_protobuf_FileDescriptorSet *google_protobuf_FileDescriptorSet_new(upb_env *env);
+google_protobuf_FileDescriptorSet *google_protobuf_FileDescriptorSet_parsenew(upb_stringview buf, upb_env *env);
+char *google_protobuf_FileDescriptorSet_serialize(google_protobuf_FileDescriptorSet *msg, upb_env *env, size_t *len);
+void google_protobuf_FileDescriptorSet_free(google_protobuf_FileDescriptorSet *msg, upb_env *env);
+
+/* getters. */
+const upb_array* google_protobuf_FileDescriptorSet_file(const google_protobuf_FileDescriptorSet *msg);
+
+/* setters. */
+void google_protobuf_FileDescriptorSet_set_file(google_protobuf_FileDescriptorSet *msg, upb_array* value);
+
+
+/* google_protobuf_FileDescriptorProto */
+extern const upb_msglayout_msginit_v1 google_protobuf_FileDescriptorProto_msginit;
+google_protobuf_FileDescriptorProto *google_protobuf_FileDescriptorProto_new(upb_env *env);
+google_protobuf_FileDescriptorProto *google_protobuf_FileDescriptorProto_parsenew(upb_stringview buf, upb_env *env);
+char *google_protobuf_FileDescriptorProto_serialize(google_protobuf_FileDescriptorProto *msg, upb_env *env, size_t *len);
+void google_protobuf_FileDescriptorProto_free(google_protobuf_FileDescriptorProto *msg, upb_env *env);
+
+/* getters. */
+upb_stringview google_protobuf_FileDescriptorProto_name(const google_protobuf_FileDescriptorProto *msg);
+upb_stringview google_protobuf_FileDescriptorProto_package(const google_protobuf_FileDescriptorProto *msg);
+const upb_array* google_protobuf_FileDescriptorProto_dependency(const google_protobuf_FileDescriptorProto *msg);
+const upb_array* google_protobuf_FileDescriptorProto_message_type(const google_protobuf_FileDescriptorProto *msg);
+const upb_array* google_protobuf_FileDescriptorProto_enum_type(const google_protobuf_FileDescriptorProto *msg);
+const upb_array* google_protobuf_FileDescriptorProto_service(const google_protobuf_FileDescriptorProto *msg);
+const upb_array* google_protobuf_FileDescriptorProto_extension(const google_protobuf_FileDescriptorProto *msg);
+const google_protobuf_FileOptions* google_protobuf_FileDescriptorProto_options(const google_protobuf_FileDescriptorProto *msg);
+const google_protobuf_SourceCodeInfo* google_protobuf_FileDescriptorProto_source_code_info(const google_protobuf_FileDescriptorProto *msg);
+const upb_array* google_protobuf_FileDescriptorProto_public_dependency(const google_protobuf_FileDescriptorProto *msg);
+const upb_array* google_protobuf_FileDescriptorProto_weak_dependency(const google_protobuf_FileDescriptorProto *msg);
+upb_stringview google_protobuf_FileDescriptorProto_syntax(const google_protobuf_FileDescriptorProto *msg);
+
+/* setters. */
+void google_protobuf_FileDescriptorProto_set_name(google_protobuf_FileDescriptorProto *msg, upb_stringview value);
+void google_protobuf_FileDescriptorProto_set_package(google_protobuf_FileDescriptorProto *msg, upb_stringview value);
+void google_protobuf_FileDescriptorProto_set_dependency(google_protobuf_FileDescriptorProto *msg, upb_array* value);
+void google_protobuf_FileDescriptorProto_set_message_type(google_protobuf_FileDescriptorProto *msg, upb_array* value);
+void google_protobuf_FileDescriptorProto_set_enum_type(google_protobuf_FileDescriptorProto *msg, upb_array* value);
+void google_protobuf_FileDescriptorProto_set_service(google_protobuf_FileDescriptorProto *msg, upb_array* value);
+void google_protobuf_FileDescriptorProto_set_extension(google_protobuf_FileDescriptorProto *msg, upb_array* value);
+void google_protobuf_FileDescriptorProto_set_options(google_protobuf_FileDescriptorProto *msg, google_protobuf_FileOptions* value);
+void google_protobuf_FileDescriptorProto_set_source_code_info(google_protobuf_FileDescriptorProto *msg, google_protobuf_SourceCodeInfo* value);
+void google_protobuf_FileDescriptorProto_set_public_dependency(google_protobuf_FileDescriptorProto *msg, upb_array* value);
+void google_protobuf_FileDescriptorProto_set_weak_dependency(google_protobuf_FileDescriptorProto *msg, upb_array* value);
+void google_protobuf_FileDescriptorProto_set_syntax(google_protobuf_FileDescriptorProto *msg, upb_stringview value);
+
+
+/* google_protobuf_DescriptorProto */
+extern const upb_msglayout_msginit_v1 google_protobuf_DescriptorProto_msginit;
+google_protobuf_DescriptorProto *google_protobuf_DescriptorProto_new(upb_env *env);
+google_protobuf_DescriptorProto *google_protobuf_DescriptorProto_parsenew(upb_stringview buf, upb_env *env);
+char *google_protobuf_DescriptorProto_serialize(google_protobuf_DescriptorProto *msg, upb_env *env, size_t *len);
+void google_protobuf_DescriptorProto_free(google_protobuf_DescriptorProto *msg, upb_env *env);
+
+/* getters. */
+upb_stringview google_protobuf_DescriptorProto_name(const google_protobuf_DescriptorProto *msg);
+const upb_array* google_protobuf_DescriptorProto_field(const google_protobuf_DescriptorProto *msg);
+const upb_array* google_protobuf_DescriptorProto_nested_type(const google_protobuf_DescriptorProto *msg);
+const upb_array* google_protobuf_DescriptorProto_enum_type(const google_protobuf_DescriptorProto *msg);
+const upb_array* google_protobuf_DescriptorProto_extension_range(const google_protobuf_DescriptorProto *msg);
+const upb_array* google_protobuf_DescriptorProto_extension(const google_protobuf_DescriptorProto *msg);
+const google_protobuf_MessageOptions* google_protobuf_DescriptorProto_options(const google_protobuf_DescriptorProto *msg);
+const upb_array* google_protobuf_DescriptorProto_oneof_decl(const google_protobuf_DescriptorProto *msg);
+const upb_array* google_protobuf_DescriptorProto_reserved_range(const google_protobuf_DescriptorProto *msg);
+const upb_array* google_protobuf_DescriptorProto_reserved_name(const google_protobuf_DescriptorProto *msg);
+
+/* setters. */
+void google_protobuf_DescriptorProto_set_name(google_protobuf_DescriptorProto *msg, upb_stringview value);
+void google_protobuf_DescriptorProto_set_field(google_protobuf_DescriptorProto *msg, upb_array* value);
+void google_protobuf_DescriptorProto_set_nested_type(google_protobuf_DescriptorProto *msg, upb_array* value);
+void google_protobuf_DescriptorProto_set_enum_type(google_protobuf_DescriptorProto *msg, upb_array* value);
+void google_protobuf_DescriptorProto_set_extension_range(google_protobuf_DescriptorProto *msg, upb_array* value);
+void google_protobuf_DescriptorProto_set_extension(google_protobuf_DescriptorProto *msg, upb_array* value);
+void google_protobuf_DescriptorProto_set_options(google_protobuf_DescriptorProto *msg, google_protobuf_MessageOptions* value);
+void google_protobuf_DescriptorProto_set_oneof_decl(google_protobuf_DescriptorProto *msg, upb_array* value);
+void google_protobuf_DescriptorProto_set_reserved_range(google_protobuf_DescriptorProto *msg, upb_array* value);
+void google_protobuf_DescriptorProto_set_reserved_name(google_protobuf_DescriptorProto *msg, upb_array* value);
+
+
+/* google_protobuf_DescriptorProto_ExtensionRange */
+extern const upb_msglayout_msginit_v1 google_protobuf_DescriptorProto_ExtensionRange_msginit;
+google_protobuf_DescriptorProto_ExtensionRange *google_protobuf_DescriptorProto_ExtensionRange_new(upb_env *env);
+google_protobuf_DescriptorProto_ExtensionRange *google_protobuf_DescriptorProto_ExtensionRange_parsenew(upb_stringview buf, upb_env *env);
+char *google_protobuf_DescriptorProto_ExtensionRange_serialize(google_protobuf_DescriptorProto_ExtensionRange *msg, upb_env *env, size_t *len);
+void google_protobuf_DescriptorProto_ExtensionRange_free(google_protobuf_DescriptorProto_ExtensionRange *msg, upb_env *env);
+
+/* getters. */
+int32_t google_protobuf_DescriptorProto_ExtensionRange_start(const google_protobuf_DescriptorProto_ExtensionRange *msg);
+int32_t google_protobuf_DescriptorProto_ExtensionRange_end(const google_protobuf_DescriptorProto_ExtensionRange *msg);
+const google_protobuf_ExtensionRangeOptions* google_protobuf_DescriptorProto_ExtensionRange_options(const google_protobuf_DescriptorProto_ExtensionRange *msg);
+
+/* setters. */
+void google_protobuf_DescriptorProto_ExtensionRange_set_start(google_protobuf_DescriptorProto_ExtensionRange *msg, int32_t value);
+void google_protobuf_DescriptorProto_ExtensionRange_set_end(google_protobuf_DescriptorProto_ExtensionRange *msg, int32_t value);
+void google_protobuf_DescriptorProto_ExtensionRange_set_options(google_protobuf_DescriptorProto_ExtensionRange *msg, google_protobuf_ExtensionRangeOptions* value);
+
+
+/* google_protobuf_DescriptorProto_ReservedRange */
+extern const upb_msglayout_msginit_v1 google_protobuf_DescriptorProto_ReservedRange_msginit;
+google_protobuf_DescriptorProto_ReservedRange *google_protobuf_DescriptorProto_ReservedRange_new(upb_env *env);
+google_protobuf_DescriptorProto_ReservedRange *google_protobuf_DescriptorProto_ReservedRange_parsenew(upb_stringview buf, upb_env *env);
+char *google_protobuf_DescriptorProto_ReservedRange_serialize(google_protobuf_DescriptorProto_ReservedRange *msg, upb_env *env, size_t *len);
+void google_protobuf_DescriptorProto_ReservedRange_free(google_protobuf_DescriptorProto_ReservedRange *msg, upb_env *env);
+
+/* getters. */
+int32_t google_protobuf_DescriptorProto_ReservedRange_start(const google_protobuf_DescriptorProto_ReservedRange *msg);
+int32_t google_protobuf_DescriptorProto_ReservedRange_end(const google_protobuf_DescriptorProto_ReservedRange *msg);
+
+/* setters. */
+void google_protobuf_DescriptorProto_ReservedRange_set_start(google_protobuf_DescriptorProto_ReservedRange *msg, int32_t value);
+void google_protobuf_DescriptorProto_ReservedRange_set_end(google_protobuf_DescriptorProto_ReservedRange *msg, int32_t value);
+
+
+/* google_protobuf_ExtensionRangeOptions */
+extern const upb_msglayout_msginit_v1 google_protobuf_ExtensionRangeOptions_msginit;
+google_protobuf_ExtensionRangeOptions *google_protobuf_ExtensionRangeOptions_new(upb_env *env);
+google_protobuf_ExtensionRangeOptions *google_protobuf_ExtensionRangeOptions_parsenew(upb_stringview buf, upb_env *env);
+char *google_protobuf_ExtensionRangeOptions_serialize(google_protobuf_ExtensionRangeOptions *msg, upb_env *env, size_t *len);
+void google_protobuf_ExtensionRangeOptions_free(google_protobuf_ExtensionRangeOptions *msg, upb_env *env);
+
+/* getters. */
+const upb_array* google_protobuf_ExtensionRangeOptions_uninterpreted_option(const google_protobuf_ExtensionRangeOptions *msg);
+
+/* setters. */
+void google_protobuf_ExtensionRangeOptions_set_uninterpreted_option(google_protobuf_ExtensionRangeOptions *msg, upb_array* value);
+
+
+/* google_protobuf_FieldDescriptorProto */
+extern const upb_msglayout_msginit_v1 google_protobuf_FieldDescriptorProto_msginit;
+google_protobuf_FieldDescriptorProto *google_protobuf_FieldDescriptorProto_new(upb_env *env);
+google_protobuf_FieldDescriptorProto *google_protobuf_FieldDescriptorProto_parsenew(upb_stringview buf, upb_env *env);
+char *google_protobuf_FieldDescriptorProto_serialize(google_protobuf_FieldDescriptorProto *msg, upb_env *env, size_t *len);
+void google_protobuf_FieldDescriptorProto_free(google_protobuf_FieldDescriptorProto *msg, upb_env *env);
+
+/* getters. */
+upb_stringview google_protobuf_FieldDescriptorProto_name(const google_protobuf_FieldDescriptorProto *msg);
+upb_stringview google_protobuf_FieldDescriptorProto_extendee(const google_protobuf_FieldDescriptorProto *msg);
+int32_t google_protobuf_FieldDescriptorProto_number(const google_protobuf_FieldDescriptorProto *msg);
+google_protobuf_FieldDescriptorProto_Label google_protobuf_FieldDescriptorProto_label(const google_protobuf_FieldDescriptorProto *msg);
+google_protobuf_FieldDescriptorProto_Type google_protobuf_FieldDescriptorProto_type(const google_protobuf_FieldDescriptorProto *msg);
+upb_stringview google_protobuf_FieldDescriptorProto_type_name(const google_protobuf_FieldDescriptorProto *msg);
+upb_stringview google_protobuf_FieldDescriptorProto_default_value(const google_protobuf_FieldDescriptorProto *msg);
+const google_protobuf_FieldOptions* google_protobuf_FieldDescriptorProto_options(const google_protobuf_FieldDescriptorProto *msg);
+int32_t google_protobuf_FieldDescriptorProto_oneof_index(const google_protobuf_FieldDescriptorProto *msg);
+upb_stringview google_protobuf_FieldDescriptorProto_json_name(const google_protobuf_FieldDescriptorProto *msg);
+
+/* setters. */
+void google_protobuf_FieldDescriptorProto_set_name(google_protobuf_FieldDescriptorProto *msg, upb_stringview value);
+void google_protobuf_FieldDescriptorProto_set_extendee(google_protobuf_FieldDescriptorProto *msg, upb_stringview value);
+void google_protobuf_FieldDescriptorProto_set_number(google_protobuf_FieldDescriptorProto *msg, int32_t value);
+void google_protobuf_FieldDescriptorProto_set_label(google_protobuf_FieldDescriptorProto *msg, google_protobuf_FieldDescriptorProto_Label value);
+void google_protobuf_FieldDescriptorProto_set_type(google_protobuf_FieldDescriptorProto *msg, google_protobuf_FieldDescriptorProto_Type value);
+void google_protobuf_FieldDescriptorProto_set_type_name(google_protobuf_FieldDescriptorProto *msg, upb_stringview value);
+void google_protobuf_FieldDescriptorProto_set_default_value(google_protobuf_FieldDescriptorProto *msg, upb_stringview value);
+void google_protobuf_FieldDescriptorProto_set_options(google_protobuf_FieldDescriptorProto *msg, google_protobuf_FieldOptions* value);
+void google_protobuf_FieldDescriptorProto_set_oneof_index(google_protobuf_FieldDescriptorProto *msg, int32_t value);
+void google_protobuf_FieldDescriptorProto_set_json_name(google_protobuf_FieldDescriptorProto *msg, upb_stringview value);
+
+
+/* google_protobuf_OneofDescriptorProto */
+extern const upb_msglayout_msginit_v1 google_protobuf_OneofDescriptorProto_msginit;
+google_protobuf_OneofDescriptorProto *google_protobuf_OneofDescriptorProto_new(upb_env *env);
+google_protobuf_OneofDescriptorProto *google_protobuf_OneofDescriptorProto_parsenew(upb_stringview buf, upb_env *env);
+char *google_protobuf_OneofDescriptorProto_serialize(google_protobuf_OneofDescriptorProto *msg, upb_env *env, size_t *len);
+void google_protobuf_OneofDescriptorProto_free(google_protobuf_OneofDescriptorProto *msg, upb_env *env);
+
+/* getters. */
+upb_stringview google_protobuf_OneofDescriptorProto_name(const google_protobuf_OneofDescriptorProto *msg);
+const google_protobuf_OneofOptions* google_protobuf_OneofDescriptorProto_options(const google_protobuf_OneofDescriptorProto *msg);
+
+/* setters. */
+void google_protobuf_OneofDescriptorProto_set_name(google_protobuf_OneofDescriptorProto *msg, upb_stringview value);
+void google_protobuf_OneofDescriptorProto_set_options(google_protobuf_OneofDescriptorProto *msg, google_protobuf_OneofOptions* value);
+
+
+/* google_protobuf_EnumDescriptorProto */
+extern const upb_msglayout_msginit_v1 google_protobuf_EnumDescriptorProto_msginit;
+google_protobuf_EnumDescriptorProto *google_protobuf_EnumDescriptorProto_new(upb_env *env);
+google_protobuf_EnumDescriptorProto *google_protobuf_EnumDescriptorProto_parsenew(upb_stringview buf, upb_env *env);
+char *google_protobuf_EnumDescriptorProto_serialize(google_protobuf_EnumDescriptorProto *msg, upb_env *env, size_t *len);
+void google_protobuf_EnumDescriptorProto_free(google_protobuf_EnumDescriptorProto *msg, upb_env *env);
+
+/* getters. */
+upb_stringview google_protobuf_EnumDescriptorProto_name(const google_protobuf_EnumDescriptorProto *msg);
+const upb_array* google_protobuf_EnumDescriptorProto_value(const google_protobuf_EnumDescriptorProto *msg);
+const google_protobuf_EnumOptions* google_protobuf_EnumDescriptorProto_options(const google_protobuf_EnumDescriptorProto *msg);
+const upb_array* google_protobuf_EnumDescriptorProto_reserved_range(const google_protobuf_EnumDescriptorProto *msg);
+const upb_array* google_protobuf_EnumDescriptorProto_reserved_name(const google_protobuf_EnumDescriptorProto *msg);
+
+/* setters. */
+void google_protobuf_EnumDescriptorProto_set_name(google_protobuf_EnumDescriptorProto *msg, upb_stringview value);
+void google_protobuf_EnumDescriptorProto_set_value(google_protobuf_EnumDescriptorProto *msg, upb_array* value);
+void google_protobuf_EnumDescriptorProto_set_options(google_protobuf_EnumDescriptorProto *msg, google_protobuf_EnumOptions* value);
+void google_protobuf_EnumDescriptorProto_set_reserved_range(google_protobuf_EnumDescriptorProto *msg, upb_array* value);
+void google_protobuf_EnumDescriptorProto_set_reserved_name(google_protobuf_EnumDescriptorProto *msg, upb_array* value);
+
+
+/* google_protobuf_EnumDescriptorProto_EnumReservedRange */
+extern const upb_msglayout_msginit_v1 google_protobuf_EnumDescriptorProto_EnumReservedRange_msginit;
+google_protobuf_EnumDescriptorProto_EnumReservedRange *google_protobuf_EnumDescriptorProto_EnumReservedRange_new(upb_env *env);
+google_protobuf_EnumDescriptorProto_EnumReservedRange *google_protobuf_EnumDescriptorProto_EnumReservedRange_parsenew(upb_stringview buf, upb_env *env);
+char *google_protobuf_EnumDescriptorProto_EnumReservedRange_serialize(google_protobuf_EnumDescriptorProto_EnumReservedRange *msg, upb_env *env, size_t *len);
+void google_protobuf_EnumDescriptorProto_EnumReservedRange_free(google_protobuf_EnumDescriptorProto_EnumReservedRange *msg, upb_env *env);
+
+/* getters. */
+int32_t google_protobuf_EnumDescriptorProto_EnumReservedRange_start(const google_protobuf_EnumDescriptorProto_EnumReservedRange *msg);
+int32_t google_protobuf_EnumDescriptorProto_EnumReservedRange_end(const google_protobuf_EnumDescriptorProto_EnumReservedRange *msg);
+
+/* setters. */
+void google_protobuf_EnumDescriptorProto_EnumReservedRange_set_start(google_protobuf_EnumDescriptorProto_EnumReservedRange *msg, int32_t value);
+void google_protobuf_EnumDescriptorProto_EnumReservedRange_set_end(google_protobuf_EnumDescriptorProto_EnumReservedRange *msg, int32_t value);
+
+
+/* google_protobuf_EnumValueDescriptorProto */
+extern const upb_msglayout_msginit_v1 google_protobuf_EnumValueDescriptorProto_msginit;
+google_protobuf_EnumValueDescriptorProto *google_protobuf_EnumValueDescriptorProto_new(upb_env *env);
+google_protobuf_EnumValueDescriptorProto *google_protobuf_EnumValueDescriptorProto_parsenew(upb_stringview buf, upb_env *env);
+char *google_protobuf_EnumValueDescriptorProto_serialize(google_protobuf_EnumValueDescriptorProto *msg, upb_env *env, size_t *len);
+void google_protobuf_EnumValueDescriptorProto_free(google_protobuf_EnumValueDescriptorProto *msg, upb_env *env);
+
+/* getters. */
+upb_stringview google_protobuf_EnumValueDescriptorProto_name(const google_protobuf_EnumValueDescriptorProto *msg);
+int32_t google_protobuf_EnumValueDescriptorProto_number(const google_protobuf_EnumValueDescriptorProto *msg);
+const google_protobuf_EnumValueOptions* google_protobuf_EnumValueDescriptorProto_options(const google_protobuf_EnumValueDescriptorProto *msg);
+
+/* setters. */
+void google_protobuf_EnumValueDescriptorProto_set_name(google_protobuf_EnumValueDescriptorProto *msg, upb_stringview value);
+void google_protobuf_EnumValueDescriptorProto_set_number(google_protobuf_EnumValueDescriptorProto *msg, int32_t value);
+void google_protobuf_EnumValueDescriptorProto_set_options(google_protobuf_EnumValueDescriptorProto *msg, google_protobuf_EnumValueOptions* value);
+
+
+/* google_protobuf_ServiceDescriptorProto */
+extern const upb_msglayout_msginit_v1 google_protobuf_ServiceDescriptorProto_msginit;
+google_protobuf_ServiceDescriptorProto *google_protobuf_ServiceDescriptorProto_new(upb_env *env);
+google_protobuf_ServiceDescriptorProto *google_protobuf_ServiceDescriptorProto_parsenew(upb_stringview buf, upb_env *env);
+char *google_protobuf_ServiceDescriptorProto_serialize(google_protobuf_ServiceDescriptorProto *msg, upb_env *env, size_t *len);
+void google_protobuf_ServiceDescriptorProto_free(google_protobuf_ServiceDescriptorProto *msg, upb_env *env);
+
+/* getters. */
+upb_stringview google_protobuf_ServiceDescriptorProto_name(const google_protobuf_ServiceDescriptorProto *msg);
+const upb_array* google_protobuf_ServiceDescriptorProto_method(const google_protobuf_ServiceDescriptorProto *msg);
+const google_protobuf_ServiceOptions* google_protobuf_ServiceDescriptorProto_options(const google_protobuf_ServiceDescriptorProto *msg);
+
+/* setters. */
+void google_protobuf_ServiceDescriptorProto_set_name(google_protobuf_ServiceDescriptorProto *msg, upb_stringview value);
+void google_protobuf_ServiceDescriptorProto_set_method(google_protobuf_ServiceDescriptorProto *msg, upb_array* value);
+void google_protobuf_ServiceDescriptorProto_set_options(google_protobuf_ServiceDescriptorProto *msg, google_protobuf_ServiceOptions* value);
+
+
+/* google_protobuf_MethodDescriptorProto */
+extern const upb_msglayout_msginit_v1 google_protobuf_MethodDescriptorProto_msginit;
+google_protobuf_MethodDescriptorProto *google_protobuf_MethodDescriptorProto_new(upb_env *env);
+google_protobuf_MethodDescriptorProto *google_protobuf_MethodDescriptorProto_parsenew(upb_stringview buf, upb_env *env);
+char *google_protobuf_MethodDescriptorProto_serialize(google_protobuf_MethodDescriptorProto *msg, upb_env *env, size_t *len);
+void google_protobuf_MethodDescriptorProto_free(google_protobuf_MethodDescriptorProto *msg, upb_env *env);
+
+/* getters. */
+upb_stringview google_protobuf_MethodDescriptorProto_name(const google_protobuf_MethodDescriptorProto *msg);
+upb_stringview google_protobuf_MethodDescriptorProto_input_type(const google_protobuf_MethodDescriptorProto *msg);
+upb_stringview google_protobuf_MethodDescriptorProto_output_type(const google_protobuf_MethodDescriptorProto *msg);
+const google_protobuf_MethodOptions* google_protobuf_MethodDescriptorProto_options(const google_protobuf_MethodDescriptorProto *msg);
+bool google_protobuf_MethodDescriptorProto_client_streaming(const google_protobuf_MethodDescriptorProto *msg);
+bool google_protobuf_MethodDescriptorProto_server_streaming(const google_protobuf_MethodDescriptorProto *msg);
+
+/* setters. */
+void google_protobuf_MethodDescriptorProto_set_name(google_protobuf_MethodDescriptorProto *msg, upb_stringview value);
+void google_protobuf_MethodDescriptorProto_set_input_type(google_protobuf_MethodDescriptorProto *msg, upb_stringview value);
+void google_protobuf_MethodDescriptorProto_set_output_type(google_protobuf_MethodDescriptorProto *msg, upb_stringview value);
+void google_protobuf_MethodDescriptorProto_set_options(google_protobuf_MethodDescriptorProto *msg, google_protobuf_MethodOptions* value);
+void google_protobuf_MethodDescriptorProto_set_client_streaming(google_protobuf_MethodDescriptorProto *msg, bool value);
+void google_protobuf_MethodDescriptorProto_set_server_streaming(google_protobuf_MethodDescriptorProto *msg, bool value);
+
+
+/* google_protobuf_FileOptions */
+extern const upb_msglayout_msginit_v1 google_protobuf_FileOptions_msginit;
+google_protobuf_FileOptions *google_protobuf_FileOptions_new(upb_env *env);
+google_protobuf_FileOptions *google_protobuf_FileOptions_parsenew(upb_stringview buf, upb_env *env);
+char *google_protobuf_FileOptions_serialize(google_protobuf_FileOptions *msg, upb_env *env, size_t *len);
+void google_protobuf_FileOptions_free(google_protobuf_FileOptions *msg, upb_env *env);
+
+/* getters. */
+upb_stringview google_protobuf_FileOptions_java_package(const google_protobuf_FileOptions *msg);
+upb_stringview google_protobuf_FileOptions_java_outer_classname(const google_protobuf_FileOptions *msg);
+google_protobuf_FileOptions_OptimizeMode google_protobuf_FileOptions_optimize_for(const google_protobuf_FileOptions *msg);
+bool google_protobuf_FileOptions_java_multiple_files(const google_protobuf_FileOptions *msg);
+upb_stringview google_protobuf_FileOptions_go_package(const google_protobuf_FileOptions *msg);
+bool google_protobuf_FileOptions_cc_generic_services(const google_protobuf_FileOptions *msg);
+bool google_protobuf_FileOptions_java_generic_services(const google_protobuf_FileOptions *msg);
+bool google_protobuf_FileOptions_py_generic_services(const google_protobuf_FileOptions *msg);
+bool google_protobuf_FileOptions_java_generate_equals_and_hash(const google_protobuf_FileOptions *msg);
+bool google_protobuf_FileOptions_deprecated(const google_protobuf_FileOptions *msg);
+bool google_protobuf_FileOptions_java_string_check_utf8(const google_protobuf_FileOptions *msg);
+bool google_protobuf_FileOptions_cc_enable_arenas(const google_protobuf_FileOptions *msg);
+upb_stringview google_protobuf_FileOptions_objc_class_prefix(const google_protobuf_FileOptions *msg);
+upb_stringview google_protobuf_FileOptions_csharp_namespace(const google_protobuf_FileOptions *msg);
+upb_stringview google_protobuf_FileOptions_swift_prefix(const google_protobuf_FileOptions *msg);
+upb_stringview google_protobuf_FileOptions_php_class_prefix(const google_protobuf_FileOptions *msg);
+upb_stringview google_protobuf_FileOptions_php_namespace(const google_protobuf_FileOptions *msg);
+bool google_protobuf_FileOptions_php_generic_services(const google_protobuf_FileOptions *msg);
+const upb_array* google_protobuf_FileOptions_uninterpreted_option(const google_protobuf_FileOptions *msg);
+
+/* setters. */
+void google_protobuf_FileOptions_set_java_package(google_protobuf_FileOptions *msg, upb_stringview value);
+void google_protobuf_FileOptions_set_java_outer_classname(google_protobuf_FileOptions *msg, upb_stringview value);
+void google_protobuf_FileOptions_set_optimize_for(google_protobuf_FileOptions *msg, google_protobuf_FileOptions_OptimizeMode value);
+void google_protobuf_FileOptions_set_java_multiple_files(google_protobuf_FileOptions *msg, bool value);
+void google_protobuf_FileOptions_set_go_package(google_protobuf_FileOptions *msg, upb_stringview value);
+void google_protobuf_FileOptions_set_cc_generic_services(google_protobuf_FileOptions *msg, bool value);
+void google_protobuf_FileOptions_set_java_generic_services(google_protobuf_FileOptions *msg, bool value);
+void google_protobuf_FileOptions_set_py_generic_services(google_protobuf_FileOptions *msg, bool value);
+void google_protobuf_FileOptions_set_java_generate_equals_and_hash(google_protobuf_FileOptions *msg, bool value);
+void google_protobuf_FileOptions_set_deprecated(google_protobuf_FileOptions *msg, bool value);
+void google_protobuf_FileOptions_set_java_string_check_utf8(google_protobuf_FileOptions *msg, bool value);
+void google_protobuf_FileOptions_set_cc_enable_arenas(google_protobuf_FileOptions *msg, bool value);
+void google_protobuf_FileOptions_set_objc_class_prefix(google_protobuf_FileOptions *msg, upb_stringview value);
+void google_protobuf_FileOptions_set_csharp_namespace(google_protobuf_FileOptions *msg, upb_stringview value);
+void google_protobuf_FileOptions_set_swift_prefix(google_protobuf_FileOptions *msg, upb_stringview value);
+void google_protobuf_FileOptions_set_php_class_prefix(google_protobuf_FileOptions *msg, upb_stringview value);
+void google_protobuf_FileOptions_set_php_namespace(google_protobuf_FileOptions *msg, upb_stringview value);
+void google_protobuf_FileOptions_set_php_generic_services(google_protobuf_FileOptions *msg, bool value);
+void google_protobuf_FileOptions_set_uninterpreted_option(google_protobuf_FileOptions *msg, upb_array* value);
+
+
+/* google_protobuf_MessageOptions */
+extern const upb_msglayout_msginit_v1 google_protobuf_MessageOptions_msginit;
+google_protobuf_MessageOptions *google_protobuf_MessageOptions_new(upb_env *env);
+google_protobuf_MessageOptions *google_protobuf_MessageOptions_parsenew(upb_stringview buf, upb_env *env);
+char *google_protobuf_MessageOptions_serialize(google_protobuf_MessageOptions *msg, upb_env *env, size_t *len);
+void google_protobuf_MessageOptions_free(google_protobuf_MessageOptions *msg, upb_env *env);
+
+/* getters. */
+bool google_protobuf_MessageOptions_message_set_wire_format(const google_protobuf_MessageOptions *msg);
+bool google_protobuf_MessageOptions_no_standard_descriptor_accessor(const google_protobuf_MessageOptions *msg);
+bool google_protobuf_MessageOptions_deprecated(const google_protobuf_MessageOptions *msg);
+bool google_protobuf_MessageOptions_map_entry(const google_protobuf_MessageOptions *msg);
+const upb_array* google_protobuf_MessageOptions_uninterpreted_option(const google_protobuf_MessageOptions *msg);
+
+/* setters. */
+void google_protobuf_MessageOptions_set_message_set_wire_format(google_protobuf_MessageOptions *msg, bool value);
+void google_protobuf_MessageOptions_set_no_standard_descriptor_accessor(google_protobuf_MessageOptions *msg, bool value);
+void google_protobuf_MessageOptions_set_deprecated(google_protobuf_MessageOptions *msg, bool value);
+void google_protobuf_MessageOptions_set_map_entry(google_protobuf_MessageOptions *msg, bool value);
+void google_protobuf_MessageOptions_set_uninterpreted_option(google_protobuf_MessageOptions *msg, upb_array* value);
+
+
+/* google_protobuf_FieldOptions */
+extern const upb_msglayout_msginit_v1 google_protobuf_FieldOptions_msginit;
+google_protobuf_FieldOptions *google_protobuf_FieldOptions_new(upb_env *env);
+google_protobuf_FieldOptions *google_protobuf_FieldOptions_parsenew(upb_stringview buf, upb_env *env);
+char *google_protobuf_FieldOptions_serialize(google_protobuf_FieldOptions *msg, upb_env *env, size_t *len);
+void google_protobuf_FieldOptions_free(google_protobuf_FieldOptions *msg, upb_env *env);
+
+/* getters. */
+google_protobuf_FieldOptions_CType google_protobuf_FieldOptions_ctype(const google_protobuf_FieldOptions *msg);
+bool google_protobuf_FieldOptions_packed(const google_protobuf_FieldOptions *msg);
+bool google_protobuf_FieldOptions_deprecated(const google_protobuf_FieldOptions *msg);
+bool google_protobuf_FieldOptions_lazy(const google_protobuf_FieldOptions *msg);
+google_protobuf_FieldOptions_JSType google_protobuf_FieldOptions_jstype(const google_protobuf_FieldOptions *msg);
+bool google_protobuf_FieldOptions_weak(const google_protobuf_FieldOptions *msg);
+const upb_array* google_protobuf_FieldOptions_uninterpreted_option(const google_protobuf_FieldOptions *msg);
+
+/* setters. */
+void google_protobuf_FieldOptions_set_ctype(google_protobuf_FieldOptions *msg, google_protobuf_FieldOptions_CType value);
+void google_protobuf_FieldOptions_set_packed(google_protobuf_FieldOptions *msg, bool value);
+void google_protobuf_FieldOptions_set_deprecated(google_protobuf_FieldOptions *msg, bool value);
+void google_protobuf_FieldOptions_set_lazy(google_protobuf_FieldOptions *msg, bool value);
+void google_protobuf_FieldOptions_set_jstype(google_protobuf_FieldOptions *msg, google_protobuf_FieldOptions_JSType value);
+void google_protobuf_FieldOptions_set_weak(google_protobuf_FieldOptions *msg, bool value);
+void google_protobuf_FieldOptions_set_uninterpreted_option(google_protobuf_FieldOptions *msg, upb_array* value);
+
+
+/* google_protobuf_OneofOptions */
+extern const upb_msglayout_msginit_v1 google_protobuf_OneofOptions_msginit;
+google_protobuf_OneofOptions *google_protobuf_OneofOptions_new(upb_env *env);
+google_protobuf_OneofOptions *google_protobuf_OneofOptions_parsenew(upb_stringview buf, upb_env *env);
+char *google_protobuf_OneofOptions_serialize(google_protobuf_OneofOptions *msg, upb_env *env, size_t *len);
+void google_protobuf_OneofOptions_free(google_protobuf_OneofOptions *msg, upb_env *env);
+
+/* getters. */
+const upb_array* google_protobuf_OneofOptions_uninterpreted_option(const google_protobuf_OneofOptions *msg);
+
+/* setters. */
+void google_protobuf_OneofOptions_set_uninterpreted_option(google_protobuf_OneofOptions *msg, upb_array* value);
+
+
+/* google_protobuf_EnumOptions */
+extern const upb_msglayout_msginit_v1 google_protobuf_EnumOptions_msginit;
+google_protobuf_EnumOptions *google_protobuf_EnumOptions_new(upb_env *env);
+google_protobuf_EnumOptions *google_protobuf_EnumOptions_parsenew(upb_stringview buf, upb_env *env);
+char *google_protobuf_EnumOptions_serialize(google_protobuf_EnumOptions *msg, upb_env *env, size_t *len);
+void google_protobuf_EnumOptions_free(google_protobuf_EnumOptions *msg, upb_env *env);
+
+/* getters. */
+bool google_protobuf_EnumOptions_allow_alias(const google_protobuf_EnumOptions *msg);
+bool google_protobuf_EnumOptions_deprecated(const google_protobuf_EnumOptions *msg);
+const upb_array* google_protobuf_EnumOptions_uninterpreted_option(const google_protobuf_EnumOptions *msg);
+
+/* setters. */
+void google_protobuf_EnumOptions_set_allow_alias(google_protobuf_EnumOptions *msg, bool value);
+void google_protobuf_EnumOptions_set_deprecated(google_protobuf_EnumOptions *msg, bool value);
+void google_protobuf_EnumOptions_set_uninterpreted_option(google_protobuf_EnumOptions *msg, upb_array* value);
+
+
+/* google_protobuf_EnumValueOptions */
+extern const upb_msglayout_msginit_v1 google_protobuf_EnumValueOptions_msginit;
+google_protobuf_EnumValueOptions *google_protobuf_EnumValueOptions_new(upb_env *env);
+google_protobuf_EnumValueOptions *google_protobuf_EnumValueOptions_parsenew(upb_stringview buf, upb_env *env);
+char *google_protobuf_EnumValueOptions_serialize(google_protobuf_EnumValueOptions *msg, upb_env *env, size_t *len);
+void google_protobuf_EnumValueOptions_free(google_protobuf_EnumValueOptions *msg, upb_env *env);
+
+/* getters. */
+bool google_protobuf_EnumValueOptions_deprecated(const google_protobuf_EnumValueOptions *msg);
+const upb_array* google_protobuf_EnumValueOptions_uninterpreted_option(const google_protobuf_EnumValueOptions *msg);
+
+/* setters. */
+void google_protobuf_EnumValueOptions_set_deprecated(google_protobuf_EnumValueOptions *msg, bool value);
+void google_protobuf_EnumValueOptions_set_uninterpreted_option(google_protobuf_EnumValueOptions *msg, upb_array* value);
+
+
+/* google_protobuf_ServiceOptions */
+extern const upb_msglayout_msginit_v1 google_protobuf_ServiceOptions_msginit;
+google_protobuf_ServiceOptions *google_protobuf_ServiceOptions_new(upb_env *env);
+google_protobuf_ServiceOptions *google_protobuf_ServiceOptions_parsenew(upb_stringview buf, upb_env *env);
+char *google_protobuf_ServiceOptions_serialize(google_protobuf_ServiceOptions *msg, upb_env *env, size_t *len);
+void google_protobuf_ServiceOptions_free(google_protobuf_ServiceOptions *msg, upb_env *env);
+
+/* getters. */
+bool google_protobuf_ServiceOptions_deprecated(const google_protobuf_ServiceOptions *msg);
+const upb_array* google_protobuf_ServiceOptions_uninterpreted_option(const google_protobuf_ServiceOptions *msg);
+
+/* setters. */
+void google_protobuf_ServiceOptions_set_deprecated(google_protobuf_ServiceOptions *msg, bool value);
+void google_protobuf_ServiceOptions_set_uninterpreted_option(google_protobuf_ServiceOptions *msg, upb_array* value);
+
+
+/* google_protobuf_MethodOptions */
+extern const upb_msglayout_msginit_v1 google_protobuf_MethodOptions_msginit;
+google_protobuf_MethodOptions *google_protobuf_MethodOptions_new(upb_env *env);
+google_protobuf_MethodOptions *google_protobuf_MethodOptions_parsenew(upb_stringview buf, upb_env *env);
+char *google_protobuf_MethodOptions_serialize(google_protobuf_MethodOptions *msg, upb_env *env, size_t *len);
+void google_protobuf_MethodOptions_free(google_protobuf_MethodOptions *msg, upb_env *env);
+
+/* getters. */
+bool google_protobuf_MethodOptions_deprecated(const google_protobuf_MethodOptions *msg);
+google_protobuf_MethodOptions_IdempotencyLevel google_protobuf_MethodOptions_idempotency_level(const google_protobuf_MethodOptions *msg);
+const upb_array* google_protobuf_MethodOptions_uninterpreted_option(const google_protobuf_MethodOptions *msg);
+
+/* setters. */
+void google_protobuf_MethodOptions_set_deprecated(google_protobuf_MethodOptions *msg, bool value);
+void google_protobuf_MethodOptions_set_idempotency_level(google_protobuf_MethodOptions *msg, google_protobuf_MethodOptions_IdempotencyLevel value);
+void google_protobuf_MethodOptions_set_uninterpreted_option(google_protobuf_MethodOptions *msg, upb_array* value);
+
+
+/* google_protobuf_UninterpretedOption */
+extern const upb_msglayout_msginit_v1 google_protobuf_UninterpretedOption_msginit;
+google_protobuf_UninterpretedOption *google_protobuf_UninterpretedOption_new(upb_env *env);
+google_protobuf_UninterpretedOption *google_protobuf_UninterpretedOption_parsenew(upb_stringview buf, upb_env *env);
+char *google_protobuf_UninterpretedOption_serialize(google_protobuf_UninterpretedOption *msg, upb_env *env, size_t *len);
+void google_protobuf_UninterpretedOption_free(google_protobuf_UninterpretedOption *msg, upb_env *env);
+
+/* getters. */
+const upb_array* google_protobuf_UninterpretedOption_name(const google_protobuf_UninterpretedOption *msg);
+upb_stringview google_protobuf_UninterpretedOption_identifier_value(const google_protobuf_UninterpretedOption *msg);
+uint64_t google_protobuf_UninterpretedOption_positive_int_value(const google_protobuf_UninterpretedOption *msg);
+int64_t google_protobuf_UninterpretedOption_negative_int_value(const google_protobuf_UninterpretedOption *msg);
+double google_protobuf_UninterpretedOption_double_value(const google_protobuf_UninterpretedOption *msg);
+upb_stringview google_protobuf_UninterpretedOption_string_value(const google_protobuf_UninterpretedOption *msg);
+upb_stringview google_protobuf_UninterpretedOption_aggregate_value(const google_protobuf_UninterpretedOption *msg);
+
+/* setters. */
+void google_protobuf_UninterpretedOption_set_name(google_protobuf_UninterpretedOption *msg, upb_array* value);
+void google_protobuf_UninterpretedOption_set_identifier_value(google_protobuf_UninterpretedOption *msg, upb_stringview value);
+void google_protobuf_UninterpretedOption_set_positive_int_value(google_protobuf_UninterpretedOption *msg, uint64_t value);
+void google_protobuf_UninterpretedOption_set_negative_int_value(google_protobuf_UninterpretedOption *msg, int64_t value);
+void google_protobuf_UninterpretedOption_set_double_value(google_protobuf_UninterpretedOption *msg, double value);
+void google_protobuf_UninterpretedOption_set_string_value(google_protobuf_UninterpretedOption *msg, upb_stringview value);
+void google_protobuf_UninterpretedOption_set_aggregate_value(google_protobuf_UninterpretedOption *msg, upb_stringview value);
+
+
+/* google_protobuf_UninterpretedOption_NamePart */
+extern const upb_msglayout_msginit_v1 google_protobuf_UninterpretedOption_NamePart_msginit;
+google_protobuf_UninterpretedOption_NamePart *google_protobuf_UninterpretedOption_NamePart_new(upb_env *env);
+google_protobuf_UninterpretedOption_NamePart *google_protobuf_UninterpretedOption_NamePart_parsenew(upb_stringview buf, upb_env *env);
+char *google_protobuf_UninterpretedOption_NamePart_serialize(google_protobuf_UninterpretedOption_NamePart *msg, upb_env *env, size_t *len);
+void google_protobuf_UninterpretedOption_NamePart_free(google_protobuf_UninterpretedOption_NamePart *msg, upb_env *env);
+
+/* getters. */
+upb_stringview google_protobuf_UninterpretedOption_NamePart_name_part(const google_protobuf_UninterpretedOption_NamePart *msg);
+bool google_protobuf_UninterpretedOption_NamePart_is_extension(const google_protobuf_UninterpretedOption_NamePart *msg);
+
+/* setters. */
+void google_protobuf_UninterpretedOption_NamePart_set_name_part(google_protobuf_UninterpretedOption_NamePart *msg, upb_stringview value);
+void google_protobuf_UninterpretedOption_NamePart_set_is_extension(google_protobuf_UninterpretedOption_NamePart *msg, bool value);
+
+
+/* google_protobuf_SourceCodeInfo */
+extern const upb_msglayout_msginit_v1 google_protobuf_SourceCodeInfo_msginit;
+google_protobuf_SourceCodeInfo *google_protobuf_SourceCodeInfo_new(upb_env *env);
+google_protobuf_SourceCodeInfo *google_protobuf_SourceCodeInfo_parsenew(upb_stringview buf, upb_env *env);
+char *google_protobuf_SourceCodeInfo_serialize(google_protobuf_SourceCodeInfo *msg, upb_env *env, size_t *len);
+void google_protobuf_SourceCodeInfo_free(google_protobuf_SourceCodeInfo *msg, upb_env *env);
+
+/* getters. */
+const upb_array* google_protobuf_SourceCodeInfo_location(const google_protobuf_SourceCodeInfo *msg);
+
+/* setters. */
+void google_protobuf_SourceCodeInfo_set_location(google_protobuf_SourceCodeInfo *msg, upb_array* value);
+
+
+/* google_protobuf_SourceCodeInfo_Location */
+extern const upb_msglayout_msginit_v1 google_protobuf_SourceCodeInfo_Location_msginit;
+google_protobuf_SourceCodeInfo_Location *google_protobuf_SourceCodeInfo_Location_new(upb_env *env);
+google_protobuf_SourceCodeInfo_Location *google_protobuf_SourceCodeInfo_Location_parsenew(upb_stringview buf, upb_env *env);
+char *google_protobuf_SourceCodeInfo_Location_serialize(google_protobuf_SourceCodeInfo_Location *msg, upb_env *env, size_t *len);
+void google_protobuf_SourceCodeInfo_Location_free(google_protobuf_SourceCodeInfo_Location *msg, upb_env *env);
+
+/* getters. */
+const upb_array* google_protobuf_SourceCodeInfo_Location_path(const google_protobuf_SourceCodeInfo_Location *msg);
+const upb_array* google_protobuf_SourceCodeInfo_Location_span(const google_protobuf_SourceCodeInfo_Location *msg);
+upb_stringview google_protobuf_SourceCodeInfo_Location_leading_comments(const google_protobuf_SourceCodeInfo_Location *msg);
+upb_stringview google_protobuf_SourceCodeInfo_Location_trailing_comments(const google_protobuf_SourceCodeInfo_Location *msg);
+const upb_array* google_protobuf_SourceCodeInfo_Location_leading_detached_comments(const google_protobuf_SourceCodeInfo_Location *msg);
+
+/* setters. */
+void google_protobuf_SourceCodeInfo_Location_set_path(google_protobuf_SourceCodeInfo_Location *msg, upb_array* value);
+void google_protobuf_SourceCodeInfo_Location_set_span(google_protobuf_SourceCodeInfo_Location *msg, upb_array* value);
+void google_protobuf_SourceCodeInfo_Location_set_leading_comments(google_protobuf_SourceCodeInfo_Location *msg, upb_stringview value);
+void google_protobuf_SourceCodeInfo_Location_set_trailing_comments(google_protobuf_SourceCodeInfo_Location *msg, upb_stringview value);
+void google_protobuf_SourceCodeInfo_Location_set_leading_detached_comments(google_protobuf_SourceCodeInfo_Location *msg, upb_array* value);
+
+
+/* google_protobuf_GeneratedCodeInfo */
+extern const upb_msglayout_msginit_v1 google_protobuf_GeneratedCodeInfo_msginit;
+google_protobuf_GeneratedCodeInfo *google_protobuf_GeneratedCodeInfo_new(upb_env *env);
+google_protobuf_GeneratedCodeInfo *google_protobuf_GeneratedCodeInfo_parsenew(upb_stringview buf, upb_env *env);
+char *google_protobuf_GeneratedCodeInfo_serialize(google_protobuf_GeneratedCodeInfo *msg, upb_env *env, size_t *len);
+void google_protobuf_GeneratedCodeInfo_free(google_protobuf_GeneratedCodeInfo *msg, upb_env *env);
+
+/* getters. */
+const upb_array* google_protobuf_GeneratedCodeInfo_annotation(const google_protobuf_GeneratedCodeInfo *msg);
+
+/* setters. */
+void google_protobuf_GeneratedCodeInfo_set_annotation(google_protobuf_GeneratedCodeInfo *msg, upb_array* value);
+
+
+/* google_protobuf_GeneratedCodeInfo_Annotation */
+extern const upb_msglayout_msginit_v1 google_protobuf_GeneratedCodeInfo_Annotation_msginit;
+google_protobuf_GeneratedCodeInfo_Annotation *google_protobuf_GeneratedCodeInfo_Annotation_new(upb_env *env);
+google_protobuf_GeneratedCodeInfo_Annotation *google_protobuf_GeneratedCodeInfo_Annotation_parsenew(upb_stringview buf, upb_env *env);
+char *google_protobuf_GeneratedCodeInfo_Annotation_serialize(google_protobuf_GeneratedCodeInfo_Annotation *msg, upb_env *env, size_t *len);
+void google_protobuf_GeneratedCodeInfo_Annotation_free(google_protobuf_GeneratedCodeInfo_Annotation *msg, upb_env *env);
+
+/* getters. */
+const upb_array* google_protobuf_GeneratedCodeInfo_Annotation_path(const google_protobuf_GeneratedCodeInfo_Annotation *msg);
+upb_stringview google_protobuf_GeneratedCodeInfo_Annotation_source_file(const google_protobuf_GeneratedCodeInfo_Annotation *msg);
+int32_t google_protobuf_GeneratedCodeInfo_Annotation_begin(const google_protobuf_GeneratedCodeInfo_Annotation *msg);
+int32_t google_protobuf_GeneratedCodeInfo_Annotation_end(const google_protobuf_GeneratedCodeInfo_Annotation *msg);
+
+/* setters. */
+void google_protobuf_GeneratedCodeInfo_Annotation_set_path(google_protobuf_GeneratedCodeInfo_Annotation *msg, upb_array* value);
+void google_protobuf_GeneratedCodeInfo_Annotation_set_source_file(google_protobuf_GeneratedCodeInfo_Annotation *msg, upb_stringview value);
+void google_protobuf_GeneratedCodeInfo_Annotation_set_begin(google_protobuf_GeneratedCodeInfo_Annotation *msg, int32_t value);
+void google_protobuf_GeneratedCodeInfo_Annotation_set_end(google_protobuf_GeneratedCodeInfo_Annotation *msg, int32_t value);
+
+
+UPB_END_EXTERN_C
+
+#endif  /* GOOGLE_PROTOBUF_DESCRIPTOR_PROTO_UPB_H_ */
+/*
 ** structs.int.h: structures definitions that are internal to upb.
 */
 
@@ -7001,22 +7713,6 @@ extern const struct upb_refcounted_vtbl upb_filedef_vtbl;
 
 #endif  /* UPB_STATICINIT_H_ */
 /*
-** upb_encode: parsing into a upb_msg using a upb_msglayout.
-*/
-
-#ifndef UPB_ENCODE_H_
-#define UPB_ENCODE_H_
-
-
-UPB_BEGIN_EXTERN_C
-
-char *upb_encode(const void *msg, const upb_msglayout_msginit_v1 *l,
-                 upb_env *env, size_t *size);
-
-UPB_END_EXTERN_C
-
-#endif  /* UPB_ENCODE_H_ */
-/*
 ** upb::descriptor::Reader (upb_descreader)
 **
 ** Provides a way of building upb::Defs from data in descriptor.proto format.
@@ -7118,53 +7814,6 @@ inline FileDef* Reader::file(size_t i) const {
 
 UPB_BEGIN_EXTERN_C
 
-/* Enums */
-
-typedef enum {
-  google_protobuf_FieldDescriptorProto_LABEL_OPTIONAL = 1,
-  google_protobuf_FieldDescriptorProto_LABEL_REQUIRED = 2,
-  google_protobuf_FieldDescriptorProto_LABEL_REPEATED = 3
-} google_protobuf_FieldDescriptorProto_Label;
-
-typedef enum {
-  google_protobuf_FieldDescriptorProto_TYPE_DOUBLE = 1,
-  google_protobuf_FieldDescriptorProto_TYPE_FLOAT = 2,
-  google_protobuf_FieldDescriptorProto_TYPE_INT64 = 3,
-  google_protobuf_FieldDescriptorProto_TYPE_UINT64 = 4,
-  google_protobuf_FieldDescriptorProto_TYPE_INT32 = 5,
-  google_protobuf_FieldDescriptorProto_TYPE_FIXED64 = 6,
-  google_protobuf_FieldDescriptorProto_TYPE_FIXED32 = 7,
-  google_protobuf_FieldDescriptorProto_TYPE_BOOL = 8,
-  google_protobuf_FieldDescriptorProto_TYPE_STRING = 9,
-  google_protobuf_FieldDescriptorProto_TYPE_GROUP = 10,
-  google_protobuf_FieldDescriptorProto_TYPE_MESSAGE = 11,
-  google_protobuf_FieldDescriptorProto_TYPE_BYTES = 12,
-  google_protobuf_FieldDescriptorProto_TYPE_UINT32 = 13,
-  google_protobuf_FieldDescriptorProto_TYPE_ENUM = 14,
-  google_protobuf_FieldDescriptorProto_TYPE_SFIXED32 = 15,
-  google_protobuf_FieldDescriptorProto_TYPE_SFIXED64 = 16,
-  google_protobuf_FieldDescriptorProto_TYPE_SINT32 = 17,
-  google_protobuf_FieldDescriptorProto_TYPE_SINT64 = 18
-} google_protobuf_FieldDescriptorProto_Type;
-
-typedef enum {
-  google_protobuf_FieldOptions_STRING = 0,
-  google_protobuf_FieldOptions_CORD = 1,
-  google_protobuf_FieldOptions_STRING_PIECE = 2
-} google_protobuf_FieldOptions_CType;
-
-typedef enum {
-  google_protobuf_FieldOptions_JS_NORMAL = 0,
-  google_protobuf_FieldOptions_JS_STRING = 1,
-  google_protobuf_FieldOptions_JS_NUMBER = 2
-} google_protobuf_FieldOptions_JSType;
-
-typedef enum {
-  google_protobuf_FileOptions_SPEED = 1,
-  google_protobuf_FileOptions_CODE_SIZE = 2,
-  google_protobuf_FileOptions_LITE_RUNTIME = 3
-} google_protobuf_FileOptions_OptimizeMode;
-
 /* MessageDefs: call these functions to get a ref to a msgdef. */
 const upb_msgdef *upbdefs_google_protobuf_DescriptorProto_get(const void *owner);
 const upb_msgdef *upbdefs_google_protobuf_DescriptorProto_ExtensionRange_get(const void *owner);
diff --git a/php/tests/gdb_test.sh b/php/tests/gdb_test.sh
index 484e2edf..a5f6306e 100755
--- a/php/tests/gdb_test.sh
+++ b/php/tests/gdb_test.sh
@@ -1,10 +1,18 @@
 #!/bin/bash
 
+VERSION=$1
+
+export PATH=/usr/local/php-$VERSION/bin:$PATH
+export C_INCLUDE_PATH=/usr/local/php-$VERSION/include/php/main:/usr/local/php-$VERSION/include/php:$C_INCLUDE_PATH
+export CPLUS_INCLUDE_PATH=/usr/local/php-$VERSION/include/php/main:/usr/local/php-$VERSION/include/php:$CPLUS_INCLUDE_PATH
+
+php -i | grep "Configuration"
+
 # gdb --args php -dextension=../ext/google/protobuf/modules/protobuf.so `which
 # phpunit` --bootstrap autoload.php tmp_test.php
 #
-gdb --args php -dextension=../ext/google/protobuf/modules/protobuf.so `which phpunit` --bootstrap autoload.php encode_decode_test.php
+# gdb --args php -dextension=../ext/google/protobuf/modules/protobuf.so `which phpunit` --bootstrap autoload.php encode_decode_test.php
 #
-# gdb --args php -dextension=../ext/google/protobuf/modules/protobuf.so memory_leak_test.php
+gdb --args php -dextension=../ext/google/protobuf/modules/protobuf.so memory_leak_test.php
 #
 # USE_ZEND_ALLOC=0 valgrind --leak-check=yes php -dextension=../ext/google/protobuf/modules/protobuf.so memory_leak_test.php
diff --git a/php/tests/memory_leak_test.php b/php/tests/memory_leak_test.php
index 507635e7..ad55d578 100644
--- a/php/tests/memory_leak_test.php
+++ b/php/tests/memory_leak_test.php
@@ -50,6 +50,13 @@ $to->mergeFromString($data);
 
 TestUtil::assertTestMessage($to);
 
+$from = new TestMessage();
+TestUtil::setTestMessage2($from);
+
+$data = $from->serializeToString();
+
+$to->mergeFromString($data);
+
 // TODO(teboring): This causes following tests fail in php7.
 # $from->setRecursive($from);
 
@@ -104,7 +111,7 @@ assert(1 === $n->getOneofMessage()->getA());
 
 $m = new TestMessage();
 $m->mergeFromString(hex2bin('F80601'));
-assert('F80601', bin2hex($m->serializeToString()));
+assert('f80601' === bin2hex($m->serializeToString()));
 
 // Test create repeated field via array.
 $str_arr = array("abc");
@@ -142,13 +149,32 @@ $from = new \Google\Protobuf\Value();
 $from->setNumberValue(1);
 assert(1, $from->getNumberValue());
 
+// Test discard unknown in message.
+$m = new TestMessage();
+$from = hex2bin('F80601');
+$m->mergeFromString($from);
+$m->discardUnknownFields();
+$to = $m->serializeToString();
+assert("" === bin2hex($to));
+
+// Test clear
+$m = new TestMessage();
+TestUtil::setTestMessage($m);
+$m->clear();
+
+// Test unset map element
+$m = new TestMessage();
+$map = $m->getMapStringString();
+$map[1] = 1;
+unset($map[1]);
+
 // Test descriptor
 $pool = \Google\Protobuf\DescriptorPool::getGeneratedPool();
 $desc = $pool->getDescriptorByClassName("\Foo\TestMessage");
 $field = $desc->getField(1);
 
-# $from = new TestMessage();
-# $to = new TestMessage();
-# TestUtil::setTestMessage($from);
-# $to->mergeFrom($from);
-# TestUtil::assertTestMessage($to);
+$from = new TestMessage();
+$to = new TestMessage();
+TestUtil::setTestMessage($from);
+$to->mergeFrom($from);
+TestUtil::assertTestMessage($to);
diff --git a/php/tests/test.sh b/php/tests/test.sh
index c35372d3..2983fe99 100755
--- a/php/tests/test.sh
+++ b/php/tests/test.sh
@@ -1,5 +1,11 @@
 #!/bin/bash
 
+VERSION=$1
+
+export PATH=/usr/local/php-$VERSION/bin:$PATH
+export C_INCLUDE_PATH=/usr/local/php-$VERSION/include/php/main:/usr/local/php-$VERSION/include/php:$C_INCLUDE_PATH
+export CPLUS_INCLUDE_PATH=/usr/local/php-$VERSION/include/php/main:/usr/local/php-$VERSION/include/php:$CPLUS_INCLUDE_PATH
+
 # Compile c extension
 pushd ../ext/google/protobuf/
 make clean || true
@@ -15,7 +21,7 @@ do
   echo "****************************"
   echo "* $t"
   echo "****************************"
-  php -dextension=../ext/google/protobuf/modules/protobuf.so `which phpunit` --bootstrap autoload.php $t
+  # php -dextension=../ext/google/protobuf/modules/protobuf.so `which phpunit` --bootstrap autoload.php $t
   echo ""
 done
 
@@ -25,3 +31,15 @@ done
 export ZEND_DONT_UNLOAD_MODULES=1
 export USE_ZEND_ALLOC=0
 valgrind --leak-check=yes php -dextension=../ext/google/protobuf/modules/protobuf.so memory_leak_test.php
+
+# TODO(teboring): Only for debug (phpunit has memory leak which blocks this beging used by
+# regresssion test.)
+
+# for t in "${tests[@]}"
+# do
+#   echo "****************************"
+#   echo "* $t (memory leak)"
+#   echo "****************************"
+#   valgrind --leak-check=yes php -dextension=../ext/google/protobuf/modules/protobuf.so `which phpunit` --bootstrap autoload.php $t
+#   echo ""
+# done
diff --git a/protobuf.bzl b/protobuf.bzl
index 6aed44a4..78f19c62 100644
--- a/protobuf.bzl
+++ b/protobuf.bzl
@@ -45,8 +45,11 @@ def _CcSrcs(srcs, use_grpc_plugin=False):
 def _CcOuts(srcs, use_grpc_plugin=False):
   return _CcHdrs(srcs, use_grpc_plugin) + _CcSrcs(srcs, use_grpc_plugin)
 
-def _PyOuts(srcs):
-  return [s[:-len(".proto")] + "_pb2.py" for s in srcs]
+def _PyOuts(srcs, use_grpc_plugin=False):
+  ret = [s[:-len(".proto")] + "_pb2.py" for s in srcs]
+  if use_grpc_plugin:
+    ret += [s[:-len(".proto")] + "_pb2_grpc.py" for s in srcs]
+  return ret
 
 def _RelativeOutputPath(path, include, dest=""):
   if include == None:
@@ -171,10 +174,10 @@ def cc_proto_library(
         deps=[],
         cc_libs=[],
         include=None,
-        protoc="//:protoc",
+        protoc="@com_google_protobuf//:protoc",
         internal_bootstrap_hack=False,
         use_grpc_plugin=False,
-        default_runtime="//:protobuf",
+        default_runtime="@com_google_protobuf//:protobuf",
         **kargs):
   """Bazel rule to create a C++ protobuf library from proto source files
 
@@ -317,8 +320,8 @@ def py_proto_library(
         py_libs=[],
         py_extra_srcs=[],
         include=None,
-        default_runtime="//:protobuf_python",
-        protoc="//:protoc",
+        default_runtime="@com_google_protobuf//:protobuf_python",
+        protoc="@com_google_protobuf//:protoc",
         use_grpc_plugin=False,
         **kargs):
   """Bazel rule to create a Python protobuf library from proto source files
@@ -344,7 +347,7 @@ def py_proto_library(
     **kargs: other keyword arguments that are passed to cc_library.
 
   """
-  outs = _PyOuts(srcs)
+  outs = _PyOuts(srcs, use_grpc_plugin)
 
   includes = []
   if include != None:
diff --git a/protoc-artifacts/pom.xml b/protoc-artifacts/pom.xml
index 0f9dd9f8..90323531 100644
--- a/protoc-artifacts/pom.xml
+++ b/protoc-artifacts/pom.xml
@@ -10,7 +10,7 @@
   </parent>
   <groupId>com.google.protobuf</groupId>
   <artifactId>protoc</artifactId>
-  <version>3.5.1</version>
+  <version>3.5.1-1</version>
   <packaging>pom</packaging>
   <name>Protobuf Compiler</name>
   <description>
diff --git a/python/google/protobuf/pyext/descriptor.cc b/python/google/protobuf/pyext/descriptor.cc
index bacaaf31..8af0cb12 100644
--- a/python/google/protobuf/pyext/descriptor.cc
+++ b/python/google/protobuf/pyext/descriptor.cc
@@ -107,10 +107,6 @@ bool _CalledFromGeneratedFile(int stacklevel) {
       return false;
     }
   }
-  if (frame->f_globals != frame->f_locals) {
-    // Not at global module scope
-    return false;
-  }
 
   if (frame->f_code->co_filename == NULL) {
     return false;
@@ -123,6 +119,10 @@ bool _CalledFromGeneratedFile(int stacklevel) {
     PyErr_Clear();
     return false;
   }
+  if ((filename_size < 3) || (strcmp(&filename[filename_size - 3], ".py") != 0)) {
+    // Cython's stack does not have .py file name and is not at global module scope.
+    return true;
+  }
   if (filename_size < 7) {
     // filename is too short.
     return false;
@@ -131,6 +131,11 @@ bool _CalledFromGeneratedFile(int stacklevel) {
     // Filename is not ending with _pb2.
     return false;
   }
+  
+  if (frame->f_globals != frame->f_locals) {
+    // Not at global module scope
+    return false;
+  }
 #endif
   return true;
 }
diff --git a/ruby/Rakefile b/ruby/Rakefile
index e30a75a3..7aecfe85 100644
--- a/ruby/Rakefile
+++ b/ruby/Rakefile
@@ -64,13 +64,13 @@ else
 
   task 'gem:windows' do
     require 'rake_compiler_dock'
-    RakeCompilerDock.sh "bundle && IN_DOCKER=true rake cross native gem RUBY_CC_VERSION=2.4.0:2.3.0:2.2.2:2.1.5:2.0.0"
+    RakeCompilerDock.sh "bundle && IN_DOCKER=true rake cross native gem RUBY_CC_VERSION=2.5.0:2.4.0:2.3.0:2.2.2:2.1.6:2.0.0"
   end
 
   if RUBY_PLATFORM =~ /darwin/
     task 'gem:native' do
       system "rake genproto"
-      system "rake cross native gem RUBY_CC_VERSION=2.4.0:2.3.0:2.2.2:2.1.5:2.0.0"
+      system "rake cross native gem RUBY_CC_VERSION=2.5.0:2.4.0:2.3.0:2.2.2:2.1.6:2.0.0"
     end
   else
     task 'gem:native' => [:genproto, 'gem:windows']
diff --git a/ruby/ext/google/protobuf_c/message.c b/ruby/ext/google/protobuf_c/message.c
index bc73d48c..63a61baf 100644
--- a/ruby/ext/google/protobuf_c/message.c
+++ b/ruby/ext/google/protobuf_c/message.c
@@ -540,9 +540,9 @@ VALUE build_class_from_descriptor(Descriptor* desc) {
               get_def_obj(desc->msgdef));
   rb_define_alloc_func(klass, Message_alloc);
   rb_require("google/protobuf/message_exts");
-  rb_include_module(klass, rb_eval_string("Google::Protobuf::MessageExts"));
+  rb_include_module(klass, rb_eval_string("::Google::Protobuf::MessageExts"));
   rb_extend_object(
-      klass, rb_eval_string("Google::Protobuf::MessageExts::ClassMethods"));
+      klass, rb_eval_string("::Google::Protobuf::MessageExts::ClassMethods"));
 
   rb_define_method(klass, "method_missing",
                    Message_method_missing, -1);
diff --git a/ruby/google-protobuf.gemspec b/ruby/google-protobuf.gemspec
index 998952d0..8fcf85c7 100644
--- a/ruby/google-protobuf.gemspec
+++ b/ruby/google-protobuf.gemspec
@@ -1,6 +1,6 @@
 Gem::Specification.new do |s|
   s.name        = "google-protobuf"
-  s.version     = "3.5.1"
+  s.version     = "3.5.1.2"
   s.licenses    = ["BSD-3-Clause"]
   s.summary     = "Protocol Buffers"
   s.description = "Protocol Buffers are Google's data interchange format."
diff --git a/src/google/protobuf/arena.h b/src/google/protobuf/arena.h
index 53b7def5..f286ada8 100644
--- a/src/google/protobuf/arena.h
+++ b/src/google/protobuf/arena.h
@@ -37,7 +37,7 @@
 #ifdef max
 #undef max  // Visual Studio defines this macro
 #endif
-#if defined(_MSC_VER) && !_HAS_EXCEPTIONS
+#if defined(_MSC_VER) && !defined(_LIBCPP_STD_VER) && !_HAS_EXCEPTIONS
 // Work around bugs in MSVC <typeinfo> header when _HAS_EXCEPTIONS=0.
 #include <exception>
 #include <typeinfo>
diff --git a/src/google/protobuf/compiler/js/embed.cc b/src/google/protobuf/compiler/js/embed.cc
index a725b62e..f0f946e5 100644
--- a/src/google/protobuf/compiler/js/embed.cc
+++ b/src/google/protobuf/compiler/js/embed.cc
@@ -34,8 +34,6 @@
 #include <iostream>
 #include <string>
 
-const char output_file[] = "well_known_types_embed.cc";
-
 static bool AsciiIsPrint(unsigned char c) {
   return c >= 32 && c < 127;
 }
diff --git a/src/google/protobuf/map_entry_lite.h b/src/google/protobuf/map_entry_lite.h
index aa8ff390..85a0bed7 100644
--- a/src/google/protobuf/map_entry_lite.h
+++ b/src/google/protobuf/map_entry_lite.h
@@ -355,9 +355,9 @@ class MapEntryImpl : public Base {
         // We could use memcmp here, but we don't bother. The tag is one byte.
         GOOGLE_COMPILE_ASSERT(kTagSize == 1, tag_size_error);
         if (size > 0 && *reinterpret_cast<const char*>(data) == kValueTag) {
-          typename Map::size_type size = map_->size();
+          typename Map::size_type map_size = map_->size();
           value_ptr_ = &(*map_)[key_];
-          if (GOOGLE_PREDICT_TRUE(size != map_->size())) {
+          if (GOOGLE_PREDICT_TRUE(map_size != map_->size())) {
             // We created a new key-value pair.  Fill in the value.
             typedef
                 typename MapIf<ValueTypeHandler::kIsEnum, int*, Value*>::type T;
diff --git a/src/google/protobuf/stubs/hash.h b/src/google/protobuf/stubs/hash.h
index daf8ec57..d04a25e1 100644
--- a/src/google/protobuf/stubs/hash.h
+++ b/src/google/protobuf/stubs/hash.h
@@ -235,7 +235,8 @@ class hash_set : public std::set<Key, HashFcn> {
   HashFcn hash_function() const { return HashFcn(); }
 };
 
-#elif defined(_MSC_VER) && !defined(_STLPORT_VERSION)
+#elif defined(_MSC_VER) && !defined(_STLPORT_VERSION) && \
+    !(defined(_LIBCPP_STD_VER) && _LIBCPP_STD_VER >= 11)
 
 template <typename Key>
 struct hash : public GOOGLE_PROTOBUF_HASH_COMPARE<Key> {
diff --git a/src/google/protobuf/util/internal/datapiece.cc b/src/google/protobuf/util/internal/datapiece.cc
index 2f4242d5..59bc28ae 100644
--- a/src/google/protobuf/util/internal/datapiece.cc
+++ b/src/google/protobuf/util/internal/datapiece.cc
@@ -272,7 +272,8 @@ StatusOr<string> DataPiece::ToBytes() const {
 }
 
 StatusOr<int> DataPiece::ToEnum(const google::protobuf::Enum* enum_type,
-                                bool use_lower_camel_for_enums) const {
+                                bool use_lower_camel_for_enums,
+                                bool ignore_unknown_enum_values) const {
   if (type_ == TYPE_NULL) return google::protobuf::NULL_VALUE;
 
   if (type_ == TYPE_STRING) {
@@ -305,6 +306,10 @@ StatusOr<int> DataPiece::ToEnum(const google::protobuf::Enum* enum_type,
       value = FindEnumValueByNameWithoutUnderscoreOrNull(enum_type, enum_name);
       if (value != nullptr) return value->number();
     }
+
+    // If ignore_unknown_enum_values is true an unknown enum value is treated
+    // as the default
+    if (ignore_unknown_enum_values) return enum_type->enumvalue(0).number();
   } else {
     // We don't need to check whether the value is actually declared in the
     // enum because we preserve unknown enum values as well.
diff --git a/src/google/protobuf/util/internal/datapiece.h b/src/google/protobuf/util/internal/datapiece.h
index 83516d09..95b133da 100644
--- a/src/google/protobuf/util/internal/datapiece.h
+++ b/src/google/protobuf/util/internal/datapiece.h
@@ -164,7 +164,8 @@ class LIBPROTOBUF_EXPORT DataPiece {
   // If the value is not a string, attempts to convert to a 32-bit integer.
   // If none of these succeeds, returns a conversion error status.
   util::StatusOr<int> ToEnum(const google::protobuf::Enum* enum_type,
-                               bool use_lower_camel_for_enums) const;
+                               bool use_lower_camel_for_enums,
+                               bool ignore_unknown_enum_values) const;
 
  private:
   // Disallow implicit constructor.
diff --git a/src/google/protobuf/util/internal/proto_writer.cc b/src/google/protobuf/util/internal/proto_writer.cc
index 9107e404..b7a52db6 100644
--- a/src/google/protobuf/util/internal/proto_writer.cc
+++ b/src/google/protobuf/util/internal/proto_writer.cc
@@ -267,8 +267,9 @@ inline Status WriteString(int field_number, const DataPiece& data,
 inline Status WriteEnum(int field_number, const DataPiece& data,
                         const google::protobuf::Enum* enum_type,
                         CodedOutputStream* stream,
-                        bool use_lower_camel_for_enums) {
-  StatusOr<int> e = data.ToEnum(enum_type, use_lower_camel_for_enums);
+                        bool use_lower_camel_for_enums,
+                        bool ignore_unknown_values) {
+  StatusOr<int> e = data.ToEnum(enum_type, use_lower_camel_for_enums, ignore_unknown_values);
   if (e.ok()) {
     WireFormatLite::WriteEnum(field_number, e.ValueOrDie(), stream);
   }
@@ -665,7 +666,8 @@ ProtoWriter* ProtoWriter::RenderPrimitiveField(
     case google::protobuf::Field_Kind_TYPE_ENUM: {
       status = WriteEnum(field.number(), data,
                          typeinfo_->GetEnumByTypeUrl(field.type_url()),
-                         stream_.get(), use_lower_camel_for_enums_);
+                         stream_.get(), use_lower_camel_for_enums_,
+                         ignore_unknown_fields_);
       break;
     }
     default:  // TYPE_GROUP or TYPE_MESSAGE
diff --git a/src/google/protobuf/util/internal/proto_writer.h b/src/google/protobuf/util/internal/proto_writer.h
index 89ca0e86..28496963 100644
--- a/src/google/protobuf/util/internal/proto_writer.h
+++ b/src/google/protobuf/util/internal/proto_writer.h
@@ -309,7 +309,7 @@ class LIBPROTOBUF_EXPORT ProtoWriter : public StructuredObjectWriter {
   // Indicates whether we finished writing root message completely.
   bool done_;
 
-  // If true, don't report unknown field names to the listener.
+  // If true, don't report unknown field names and enum values to the listener.
   bool ignore_unknown_fields_;
 
   // If true, check if enum name in camel case or without underscore matches the
diff --git a/src/google/protobuf/util/json_util_test.cc b/src/google/protobuf/util/json_util_test.cc
index 8c8380dc..dbd262f6 100644
--- a/src/google/protobuf/util/json_util_test.cc
+++ b/src/google/protobuf/util/json_util_test.cc
@@ -333,6 +333,64 @@ TEST_F(JsonUtilTest, TestDynamicMessage) {
   EXPECT_EQ(ToJson(generated, options), ToJson(*message, options));
 }
 
+TEST_F(JsonUtilTest, TestParsingUnknownEnumsAs0) {
+  TestMessage m;
+  {
+    JsonParseOptions options;
+    ASSERT_FALSE(options.ignore_unknown_fields);
+    string input =
+      "{\n"
+      "  \"enum_value\":\"UNKNOWN_VALUE\"\n"
+      "}";
+    m.set_enum_value(proto3::BAR);
+    EXPECT_FALSE(FromJson(input, &m, options));
+    ASSERT_EQ(proto3::BAR, m.enum_value()); // Keep previous value
+
+    options.ignore_unknown_fields = true;
+    EXPECT_TRUE(FromJson(input, &m, options));
+    EXPECT_EQ(0, m.enum_value()); // Unknown enum value must be decoded as 0
+  }
+  // Integer values are read as usual
+  {
+    JsonParseOptions options;
+    string input =
+      "{\n"
+      "  \"enum_value\":12345\n"
+      "}";
+    m.set_enum_value(proto3::BAR);
+    EXPECT_TRUE(FromJson(input, &m, options));
+    ASSERT_EQ(12345, m.enum_value());
+
+    options.ignore_unknown_fields = true;
+    EXPECT_TRUE(FromJson(input, &m, options));
+    EXPECT_EQ(12345, m.enum_value());
+  }
+
+  // Trying to pass an object as an enum field value is always treated as an error
+  {
+    JsonParseOptions options;
+    string input =
+      "{\n"
+      "  \"enum_value\":{}\n"
+      "}";
+    options.ignore_unknown_fields = true;
+    EXPECT_FALSE(FromJson(input, &m, options));
+    options.ignore_unknown_fields = false;
+    EXPECT_FALSE(FromJson(input, &m, options));
+  }
+  // Trying to pass an array as an enum field value is always treated as an error
+  {
+    JsonParseOptions options;
+    string input =
+      "{\n"
+      "  \"enum_value\":[]\n"
+      "}";
+    EXPECT_FALSE(FromJson(input, &m, options));
+    options.ignore_unknown_fields = true;
+    EXPECT_FALSE(FromJson(input, &m, options));
+  }
+}
+
 typedef std::pair<char*, int> Segment;
 // A ZeroCopyOutputStream that writes to multiple buffers.
 class SegmentedZeroCopyOutputStream : public io::ZeroCopyOutputStream {
diff --git a/tests.sh b/tests.sh
index 76286fc9..ade2c66f 100755
--- a/tests.sh
+++ b/tests.sh
@@ -419,7 +419,7 @@ build_php5.5_c() {
   use_php 5.5
   wget https://phar.phpunit.de/phpunit-4.8.0.phar -O /usr/bin/phpunit
   pushd php/tests
-  /bin/bash ./test.sh
+  /bin/bash ./test.sh 5.5
   popd
   # TODO(teboring): Add it back
   # pushd conformance
@@ -430,7 +430,7 @@ build_php5.5_c() {
 build_php5.5_zts_c() {
   use_php_zts 5.5
   wget https://phar.phpunit.de/phpunit-4.8.0.phar -O /usr/bin/phpunit
-  cd php/tests && /bin/bash ./test.sh && cd ../..
+  cd php/tests && /bin/bash ./test.sh 5.5-zts && cd ../..
   # TODO(teboring): Add it back
   # pushd conformance
   # make test_php_zts_c
@@ -453,7 +453,7 @@ build_php5.6() {
 build_php5.6_c() {
   use_php 5.6
   wget https://phar.phpunit.de/phpunit-5.7.0.phar -O /usr/bin/phpunit
-  cd php/tests && /bin/bash ./test.sh && cd ../..
+  cd php/tests && /bin/bash ./test.sh 5.6 && cd ../..
   # TODO(teboring): Add it back
   # pushd conformance
   # make test_php_c
@@ -463,7 +463,7 @@ build_php5.6_c() {
 build_php5.6_zts_c() {
   use_php_zts 5.6
   wget https://phar.phpunit.de/phpunit-5.7.0.phar -O /usr/bin/phpunit
-  cd php/tests && /bin/bash ./test.sh && cd ../..
+  cd php/tests && /bin/bash ./test.sh 5.6-zts && cd ../..
   # TODO(teboring): Add it back
   # pushd conformance
   # make test_php_zts_c
@@ -511,7 +511,7 @@ build_php7.0() {
 build_php7.0_c() {
   use_php 7.0
   wget https://phar.phpunit.de/phpunit-5.6.0.phar -O /usr/bin/phpunit
-  cd php/tests && /bin/bash ./test.sh && cd ../..
+  cd php/tests && /bin/bash ./test.sh 7.0 && cd ../..
   # TODO(teboring): Add it back
   # pushd conformance
   # make test_php_c
@@ -521,7 +521,7 @@ build_php7.0_c() {
 build_php7.0_zts_c() {
   use_php_zts 7.0
   wget https://phar.phpunit.de/phpunit-5.6.0.phar -O /usr/bin/phpunit
-  cd php/tests && /bin/bash ./test.sh && cd ../..
+  cd php/tests && /bin/bash ./test.sh 7.0-zts && cd ../..
   # TODO(teboring): Add it back.
   # pushd conformance
   # make test_php_zts_c
@@ -575,7 +575,7 @@ build_php7.1() {
 build_php7.1_c() {
   use_php 7.1
   wget https://phar.phpunit.de/phpunit-5.6.0.phar -O /usr/bin/phpunit
-  cd php/tests && /bin/bash ./test.sh && cd ../..
+  cd php/tests && /bin/bash ./test.sh 7.1 && cd ../..
   pushd conformance
   # make test_php_c
   popd
@@ -584,7 +584,7 @@ build_php7.1_c() {
 build_php7.1_zts_c() {
   use_php_zts 7.1
   wget https://phar.phpunit.de/phpunit-5.6.0.phar -O /usr/bin/phpunit
-  cd php/tests && /bin/bash ./test.sh && cd ../..
+  cd php/tests && /bin/bash ./test.sh 7.1-zts && cd ../..
   pushd conformance
   # make test_php_c
   popd
diff --git a/update_file_lists.sh b/update_file_lists.sh
index 9c0fbdc5..15291990 100755
--- a/update_file_lists.sh
+++ b/update_file_lists.sh
@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 
 # This script copies source file lists from src/Makefile.am to cmake files.