Export of internal Abseil changes

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bc74316103bbda92541896f588f71c9d45bea768 by Gennadiy Civil <misterg@google.com>:

Manually fixing the BUILD.bazel files

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d41bf9ea916a0dc8c69e6ba77f58f9d55649880e by Shaindel Schwartz <shaindel@google.com>:

Minor cleanup to miscellaneous BUILD files.

PiperOrigin-RevId: 266420157

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08a8dc2cbd48d27e1115809f9ca8d178551cd66e by Gennadiy Civil <misterg@google.com>:

Internal Change
BEGIN_PUBLIC
Internal Change
END_PUBLIC

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8617d58fde1ece40e4aa79eaa5e250b42d19835f by Shaindel Schwartz <shaindel@google.com>:

Internal Change
BEGIN_PUBLIC
Internal Change
END_PUBLIC

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3a0fc7d48bdc70c4f7dffc219578693dea84eb2d by Derek Mauro <dmauro@google.com>:

Implement absl::string_view::at()

PiperOrigin-RevId: 266024644

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ba53a9da8ede8fe7b8971eaab6b3a1fa34763ff6 by Andy Soffer <asoffer@google.com>:

Remove forcing of optimization levels in MSVC.

PiperOrigin-RevId: 265927588

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df86f2046b54bba7da2e345040806d43470de5c0 by Shaindel Schwartz <shaindel@google.com>:

Internal change

PiperOrigin-RevId: 265811077

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e2e3a6e8194363e7c6377672560c806d638a7c74 by Derek Mauro <dmauro@google.com>:

Remove ABI unsafe mixed exceptions mode compilation.
Testing will now be done on CI with the exceptions flag set globally.

PiperOrigin-RevId: 265796079
GitOrigin-RevId: bc74316103bbda92541896f588f71c9d45bea768
Change-Id: Ibccd00f4829520454aa55c4f55c7cb2dc9c6b65a

6 files changed, 37 insertions, 18 deletions

diff --git a/absl/base/BUILD.bazel b/absl/base/BUILD.bazel
index cd5dd74f..a2e510f8 100644
--- a/absl/base/BUILD.bazel
+++ b/absl/base/BUILD.bazel
@@ -19,8 +19,6 @@ load(
     "//absl:copts/configure_copts.bzl",
     "ABSL_DEFAULT_COPTS",
     "ABSL_DEFAULT_LINKOPTS",
-    "ABSL_EXCEPTIONS_FLAG",
-    "ABSL_EXCEPTIONS_FLAG_LINKOPTS",
     "ABSL_TEST_COPTS",
 )
 
@@ -241,8 +239,8 @@ cc_library(
     name = "throw_delegate",
     srcs = ["internal/throw_delegate.cc"],
     hdrs = ["internal/throw_delegate.h"],
-    copts = ABSL_DEFAULT_COPTS + ABSL_EXCEPTIONS_FLAG,
-    linkopts = ABSL_EXCEPTIONS_FLAG_LINKOPTS + ABSL_DEFAULT_LINKOPTS,
+    copts = ABSL_DEFAULT_COPTS,
+    linkopts = ABSL_DEFAULT_LINKOPTS,
     visibility = [
         "//absl:__subpackages__",
     ],
@@ -255,9 +253,10 @@ cc_library(
 cc_test(
     name = "throw_delegate_test",
     srcs = ["throw_delegate_test.cc"],
-    copts = ABSL_TEST_COPTS + ABSL_EXCEPTIONS_FLAG,
-    linkopts = ABSL_EXCEPTIONS_FLAG_LINKOPTS + ABSL_DEFAULT_LINKOPTS,
+    copts = ABSL_TEST_COPTS,
+    linkopts = ABSL_DEFAULT_LINKOPTS,
     deps = [
+        ":config",
         ":throw_delegate",
         "@com_google_googletest//:gtest_main",
     ],
@@ -290,8 +289,8 @@ cc_library(
     testonly = 1,
     srcs = ["internal/exception_safety_testing.cc"],
     hdrs = ["internal/exception_safety_testing.h"],
-    copts = ABSL_TEST_COPTS + ABSL_EXCEPTIONS_FLAG,
-    linkopts = ABSL_EXCEPTIONS_FLAG_LINKOPTS + ABSL_DEFAULT_LINKOPTS,
+    copts = ABSL_TEST_COPTS,
+    linkopts = ABSL_DEFAULT_LINKOPTS,
     deps = [
         ":config",
         ":pretty_function",
@@ -306,8 +305,8 @@ cc_library(
 cc_test(
     name = "exception_safety_testing_test",
     srcs = ["exception_safety_testing_test.cc"],
-    copts = ABSL_TEST_COPTS + ABSL_EXCEPTIONS_FLAG,
-    linkopts = ABSL_EXCEPTIONS_FLAG_LINKOPTS + ABSL_DEFAULT_LINKOPTS,
+    copts = ABSL_TEST_COPTS,
+    linkopts = ABSL_DEFAULT_LINKOPTS,
     deps = [
         ":exception_safety_testing",
         "//absl/memory",
diff --git a/absl/base/CMakeLists.txt b/absl/base/CMakeLists.txt
index bd56b5c3..15a92f5f 100644
--- a/absl/base/CMakeLists.txt
+++ b/absl/base/CMakeLists.txt
@@ -194,7 +194,6 @@ absl_cc_library(
     "internal/throw_delegate.cc"
   COPTS
     ${ABSL_DEFAULT_COPTS}
-    ${ABSL_EXCEPTIONS_FLAG}
   DEPS
     absl::config
     absl::raw_logging_internal
@@ -231,9 +230,6 @@ absl_cc_library(
     "internal/exception_safety_testing.cc"
   COPTS
     ${ABSL_TEST_COPTS}
-    ${ABSL_EXCEPTIONS_FLAG}
-  LINKOPTS
-    ${ABSL_EXCEPTIONS_FLAG_LINKOPTS}
   DEPS
     absl::config
     absl::pretty_function
@@ -252,9 +248,6 @@ absl_cc_test(
     "exception_safety_testing_test.cc"
   COPTS
     ${ABSL_TEST_COPTS}
-    ${ABSL_EXCEPTIONS_FLAG}
-  LINKOPTS
-    ${ABSL_EXCEPTIONS_FLAG_LINKOPTS}
   DEPS
     absl::exception_safety_testing
     absl::memory
@@ -296,6 +289,7 @@ absl_cc_test(
     ${ABSL_TEST_COPTS}
   DEPS
     absl::base
+    absl::config
     absl::throw_delegate
     gtest_main
 )
diff --git a/absl/base/exception_safety_testing_test.cc b/absl/base/exception_safety_testing_test.cc
index 2ed38606..575b535d 100644
--- a/absl/base/exception_safety_testing_test.cc
+++ b/absl/base/exception_safety_testing_test.cc
@@ -14,6 +14,8 @@
 
 #include "absl/base/internal/exception_safety_testing.h"
 
+#ifdef ABSL_HAVE_EXCEPTIONS
+
 #include <cstddef>
 #include <exception>
 #include <iostream>
@@ -952,3 +954,5 @@ TEST(ThrowingAllocatorTraitsTest, Assignablility) {
 }  // namespace
 
 }  // namespace testing
+
+#endif  // ABSL_HAVE_EXCEPTIONS
diff --git a/absl/base/internal/exception_safety_testing.cc b/absl/base/internal/exception_safety_testing.cc
index 6ef4325c..6ccac418 100644
--- a/absl/base/internal/exception_safety_testing.cc
+++ b/absl/base/internal/exception_safety_testing.cc
@@ -14,6 +14,8 @@
 
 #include "absl/base/internal/exception_safety_testing.h"
 
+#ifdef ABSL_HAVE_EXCEPTIONS
+
 #include "gtest/gtest.h"
 #include "absl/meta/type_traits.h"
 
@@ -73,3 +75,5 @@ std::string GetSpecString(AllocSpec spec) {
 }  // namespace exceptions_internal
 
 }  // namespace testing
+
+#endif  // ABSL_HAVE_EXCEPTIONS
diff --git a/absl/base/internal/exception_safety_testing.h b/absl/base/internal/exception_safety_testing.h
index be38ba54..6ba89d05 100644
--- a/absl/base/internal/exception_safety_testing.h
+++ b/absl/base/internal/exception_safety_testing.h
@@ -17,6 +17,10 @@
 #ifndef ABSL_BASE_INTERNAL_EXCEPTION_SAFETY_TESTING_H_
 #define ABSL_BASE_INTERNAL_EXCEPTION_SAFETY_TESTING_H_
 
+#include "absl/base/config.h"
+
+#ifdef ABSL_HAVE_EXCEPTIONS
+
 #include <cstddef>
 #include <cstdint>
 #include <functional>
@@ -27,7 +31,6 @@
 #include <unordered_map>
 
 #include "gtest/gtest.h"
-#include "absl/base/config.h"
 #include "absl/base/internal/pretty_function.h"
 #include "absl/memory/memory.h"
 #include "absl/meta/type_traits.h"
@@ -1093,4 +1096,6 @@ class ExceptionSafetyTestBuilder {
 
 }  // namespace testing
 
+#endif  // ABSL_HAVE_EXCEPTIONS
+
 #endif  // ABSL_BASE_INTERNAL_EXCEPTION_SAFETY_TESTING_H_
diff --git a/absl/base/throw_delegate_test.cc b/absl/base/throw_delegate_test.cc
index a74dd3cd..5ba4ce55 100644
--- a/absl/base/throw_delegate_test.cc
+++ b/absl/base/throw_delegate_test.cc
@@ -18,6 +18,7 @@
 #include <new>
 #include <stdexcept>
 
+#include "absl/base/config.h"
 #include "gtest/gtest.h"
 
 namespace {
@@ -38,31 +39,43 @@ constexpr const char* what_arg = "The quick brown fox jumps over the lazy dog";
 
 template <typename E>
 void ExpectThrowChar(void (*f)(const char*)) {
+#ifdef ABSL_HAVE_EXCEPTIONS
   try {
     f(what_arg);
     FAIL() << "Didn't throw";
   } catch (const E& e) {
     EXPECT_STREQ(e.what(), what_arg);
   }
+#else
+  EXPECT_DEATH_IF_SUPPORTED(f(what_arg), what_arg);
+#endif
 }
 
 template <typename E>
 void ExpectThrowString(void (*f)(const std::string&)) {
+#ifdef ABSL_HAVE_EXCEPTIONS
   try {
     f(what_arg);
     FAIL() << "Didn't throw";
   } catch (const E& e) {
     EXPECT_STREQ(e.what(), what_arg);
   }
+#else
+  EXPECT_DEATH_IF_SUPPORTED(f(what_arg), what_arg);
+#endif
 }
 
 template <typename E>
 void ExpectThrowNoWhat(void (*f)()) {
+#ifdef ABSL_HAVE_EXCEPTIONS
   try {
     f();
     FAIL() << "Didn't throw";
   } catch (const E& e) {
   }
+#else
+  EXPECT_DEATH_IF_SUPPORTED(f(), "");
+#endif
 }
 
 TEST(ThrowHelper, Test) {