Export of internal Abseil changes.

--
8becce38c862a044db194a9aea1b505796a46d6f by Abseil Team <absl-team@google.com>:

Updates the FixedArray's constructors to be exception safe by preventing double deletions. Also adds exception safety tests for FixedArray to document/enforce the expected behavior.

PiperOrigin-RevId: 201964431

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794188b401a602b4be97190fb8738066fe1f9ca5 by Derek Mauro <dmauro@google.com>:

Fixes for str_format.h documentation.

PiperOrigin-RevId: 201951760

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beae3bdd6eee2cf61101102fddc35ada188f330b by Alex Strelnikov <strel@google.com>:

Add numeric_limits specialization for uint128.

Turns out numeric_limits is a case where the consensus is that it is okay to specialize for a user defined type.

PiperOrigin-RevId: 201944736

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b2b3444a52b36878ade1ae8801e69932b05fc4f9 by Shaindel Schwartz <shaindel@google.com>:

Internal change.

PiperOrigin-RevId: 201718662

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aa924c459922f39caabfc193998c58d0f4981ac0 by Abseil Team <absl-team@google.com>:

Typo fix.

PiperOrigin-RevId: 201692176

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bbfcaa7b1af331d9b97c92470608240c5c864fbc by Xiaoyi Zhang <zhangxy@google.com>:

Use ABSL_HAVE_ANY/OPTIONAL/VARIANT to conditionally compile out the definition of absl::bad_any_cast, absl::bad_optional_access, absl::bad_variant_access. This would fix the issues where users #include those header directly in C++17 modes.

PiperOrigin-RevId: 201683792
GitOrigin-RevId: 8becce38c862a044db194a9aea1b505796a46d6f
Change-Id: I60a7ad043136a439d82c374d225a1804016b0509

absl/types/BUILD.bazel

@@ -42,7 +42,10 @@ cc_library(
     name = "bad_any_cast",
     hdrs = ["bad_any_cast.h"],
     copts = ABSL_DEFAULT_COPTS,
-    deps = [":bad_any_cast_impl"],
+    deps = [
+        ":bad_any_cast_impl",
+        "//absl/base:config",
+    ],
 )
 
 cc_library(

absl/types/bad_any_cast.cc

@@ -14,6 +14,8 @@
 
 #include "absl/types/bad_any_cast.h"
 
+#ifndef ABSL_HAVE_STD_ANY
+
 #include <cstdlib>
 
 #include "absl/base/config.h"
@@ -38,3 +40,5 @@ void ThrowBadAnyCast() {
 
 }  // namespace any_internal
 }  // namespace absl
+
+#endif  // ABSL_HAVE_STD_ANY

absl/types/bad_any_cast.h

@@ -23,6 +23,18 @@
 
 #include <typeinfo>
 
+#include "absl/base/config.h"
+
+#ifdef ABSL_HAVE_STD_ANY
+
+#include <any>
+
+namespace absl {
+using std::bad_any_cast;
+}  // namespace absl
+
+#else  // ABSL_HAVE_STD_ANY
+
 namespace absl {
 
 // -----------------------------------------------------------------------------
@@ -54,4 +66,6 @@ namespace any_internal {
 }  // namespace any_internal
 }  // namespace absl
 
+#endif  // ABSL_HAVE_STD_ANY
+
 #endif  // ABSL_TYPES_BAD_ANY_CAST_H_

absl/types/bad_optional_access.cc

@@ -14,6 +14,8 @@
 
 #include "absl/types/bad_optional_access.h"
 
+#ifndef ABSL_HAVE_STD_OPTIONAL
+
 #include <cstdlib>
 
 #include "absl/base/config.h"
@@ -40,3 +42,5 @@ void throw_bad_optional_access() {
 
 }  // namespace optional_internal
 }  // namespace absl
+
+#endif  // ABSL_HAVE_STD_OPTIONAL

absl/types/bad_optional_access.h

@@ -23,6 +23,18 @@
 
 #include <stdexcept>
 
+#include "absl/base/config.h"
+
+#ifdef ABSL_HAVE_STD_OPTIONAL
+
+#include <optional>
+
+namespace absl {
+using std::bad_optional_access;
+}  // namespace absl
+
+#else  // ABSL_HAVE_STD_OPTIONAL
+
 namespace absl {
 
 // -----------------------------------------------------------------------------
@@ -57,4 +69,6 @@ namespace optional_internal {
 }  // namespace optional_internal
 }  // namespace absl
 
+#endif  // ABSL_HAVE_STD_OPTIONAL
+
 #endif  // ABSL_TYPES_BAD_OPTIONAL_ACCESS_H_

absl/types/bad_variant_access.cc

@@ -14,6 +14,8 @@
 
 #include "absl/types/bad_variant_access.h"
 
+#ifndef ABSL_HAVE_STD_VARIANT
+
 #include <cstdlib>
 #include <stdexcept>
 
@@ -56,3 +58,5 @@ void Rethrow() {
 
 }  // namespace variant_internal
 }  // namespace absl
+
+#endif  // ABSL_HAVE_STD_VARIANT

absl/types/bad_variant_access.h

@@ -23,6 +23,18 @@
 
 #include <stdexcept>
 
+#include "absl/base/config.h"
+
+#ifdef ABSL_HAVE_STD_VARIANT
+
+#include <variant>
+
+namespace absl {
+using std::bad_variant_access;
+}  // namespace absl
+
+#else  // ABSL_HAVE_STD_VARIANT
+
 namespace absl {
 
 // -----------------------------------------------------------------------------
@@ -61,4 +73,6 @@ namespace variant_internal {
 }  // namespace variant_internal
 }  // namespace absl
 
+#endif  // ABSL_HAVE_STD_VARIANT
+
 #endif  // ABSL_TYPES_BAD_VARIANT_ACCESS_H_