Export of internal Abseil changes

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587e6db882749fa7faa12815e614afab04d218b9 by Derek Mauro <dmauro@google.com>:

Use attribute detection for other sanitizer related attributes

PiperOrigin-RevId: 324077073

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3ee55e4935b4235516b1fcac3c55945e510f7afc by Evan Brown <ezb@google.com>:

Simplify CordRepExternal allocation/deallocation.

I think this can save some memory when `Releaser` is empty and when on platforms where alignof(CordRepExternal) < (default `::operator new` alignment).

We no longer need the API requirement that alignof(Releaser) <= (default `::operator new` alignment).

Also remove another static_assert from a TODO in cord_internal.h and fix some warnings about calling std::move on a forwarding reference.

PiperOrigin-RevId: 324053720

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9fc78436565eb3b204d4aa425ee3773354392f45 by Derek Mauro <dmauro@google.com>:

Use auto-detected sanitizer attributes for ASAN, MSAN, and TSAN builds

PiperOrigin-RevId: 323831461
GitOrigin-RevId: 587e6db882749fa7faa12815e614afab04d218b9
Change-Id: Ie0e4a2846d7f66988a2d81a5e50721b62fdb3d6d

5 files changed, 14 insertions, 7 deletions

diff --git a/absl/debugging/BUILD.bazel b/absl/debugging/BUILD.bazel
index bdc50e09..9098ca4a 100644
--- a/absl/debugging/BUILD.bazel
+++ b/absl/debugging/BUILD.bazel
@@ -97,6 +97,7 @@ cc_test(
         ":stack_consumption",
         ":symbolize",
         "//absl/base",
+        "//absl/base:config",
         "//absl/base:core_headers",
         "//absl/base:raw_logging_internal",
         "//absl/memory",
@@ -204,6 +205,7 @@ cc_test(
     deps = [
         ":demangle_internal",
         ":stack_consumption",
+        "//absl/base:config",
         "//absl/base:core_headers",
         "//absl/base:raw_logging_internal",
         "//absl/memory",
diff --git a/absl/debugging/CMakeLists.txt b/absl/debugging/CMakeLists.txt
index c597df86..074b44cf 100644
--- a/absl/debugging/CMakeLists.txt
+++ b/absl/debugging/CMakeLists.txt
@@ -82,6 +82,7 @@ absl_cc_test(
     absl::stack_consumption
     absl::symbolize
     absl::base
+    absl::config
     absl::core_headers
     absl::memory
     absl::raw_logging_internal
@@ -189,6 +190,7 @@ absl_cc_test(
   DEPS
     absl::demangle_internal
     absl::stack_consumption
+    absl::config
     absl::core_headers
     absl::memory
     absl::raw_logging_internal
diff --git a/absl/debugging/failure_signal_handler.cc b/absl/debugging/failure_signal_handler.cc
index 1f69bfa8..5d13bdbb 100644
--- a/absl/debugging/failure_signal_handler.cc
+++ b/absl/debugging/failure_signal_handler.cc
@@ -136,8 +136,8 @@ static bool SetupAlternateStackOnce() {
   const size_t page_mask = sysconf(_SC_PAGESIZE) - 1;
 #endif
   size_t stack_size = (std::max(SIGSTKSZ, 65536) + page_mask) & ~page_mask;
-#if defined(ADDRESS_SANITIZER) || defined(MEMORY_SANITIZER) || \
-    defined(THREAD_SANITIZER)
+#if defined(ABSL_HAVE_ADDRESS_SANITIZER) || \
+    defined(ABSL_HAVE_MEMORY_SANITIZER) || defined(ABSL_HAVE_THREAD_SANITIZER)
   // Account for sanitizer instrumentation requiring additional stack space.
   stack_size *= 5;
 #endif
diff --git a/absl/debugging/internal/demangle_test.cc b/absl/debugging/internal/demangle_test.cc
index c6f1ce18..0bed7359 100644
--- a/absl/debugging/internal/demangle_test.cc
+++ b/absl/debugging/internal/demangle_test.cc
@@ -18,6 +18,7 @@
 #include <string>
 
 #include "gtest/gtest.h"
+#include "absl/base/config.h"
 #include "absl/base/internal/raw_logging.h"
 #include "absl/debugging/internal/stack_consumption.h"
 #include "absl/memory/memory.h"
@@ -82,9 +83,10 @@ TEST(Demangle, Clones) {
 // Tests that verify that Demangle footprint is within some limit.
 // They are not to be run under sanitizers as the sanitizers increase
 // stack consumption by about 4x.
-#if defined(ABSL_INTERNAL_HAVE_DEBUGGING_STACK_CONSUMPTION) &&   \
-    !defined(ADDRESS_SANITIZER) && !defined(MEMORY_SANITIZER) && \
-    !defined(THREAD_SANITIZER)
+#if defined(ABSL_INTERNAL_HAVE_DEBUGGING_STACK_CONSUMPTION) && \
+    !defined(ABSL_HAVE_ADDRESS_SANITIZER) &&                   \
+    !defined(ABSL_HAVE_MEMORY_SANITIZER) &&                    \
+    !defined(ABSL_HAVE_THREAD_SANITIZER)
 
 static const char *g_mangled;
 static char g_demangle_buffer[4096];
diff --git a/absl/debugging/symbolize_test.cc b/absl/debugging/symbolize_test.cc
index 43f65549..a2dd4956 100644
--- a/absl/debugging/symbolize_test.cc
+++ b/absl/debugging/symbolize_test.cc
@@ -27,6 +27,7 @@
 #include "gtest/gtest.h"
 #include "absl/base/attributes.h"
 #include "absl/base/casts.h"
+#include "absl/base/config.h"
 #include "absl/base/internal/per_thread_tls.h"
 #include "absl/base/internal/raw_logging.h"
 #include "absl/base/optimization.h"
@@ -220,8 +221,8 @@ static const char *SymbolizeStackConsumption(void *pc, int *stack_consumed) {
 static int GetStackConsumptionUpperLimit() {
   // Symbolize stack consumption should be within 2kB.
   int stack_consumption_upper_limit = 2048;
-#if defined(ADDRESS_SANITIZER) || defined(MEMORY_SANITIZER) || \
-    defined(THREAD_SANITIZER)
+#if defined(ABSL_HAVE_ADDRESS_SANITIZER) || \
+    defined(ABSL_HAVE_MEMORY_SANITIZER) || defined(ABSL_HAVE_THREAD_SANITIZER)
   // Account for sanitizer instrumentation requiring additional stack space.
   stack_consumption_upper_limit *= 5;
 #endif