修改pods

Pods/abseil/absl/base/attributes.h

@@ -195,6 +195,9 @@
 // ABSL_ATTRIBUTE_NORETURN
 //
 // Tells the compiler that a given function never returns.
+//
+// Deprecated: Prefer the `[[noreturn]]` attribute standardized by C++11 over
+// this macro.
 #if ABSL_HAVE_ATTRIBUTE(noreturn) || (defined(__GNUC__) && !defined(__clang__))
 #define ABSL_ATTRIBUTE_NORETURN __attribute__((noreturn))
 #elif defined(_MSC_VER)
@@ -702,6 +705,11 @@
   _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"")
 #define ABSL_INTERNAL_RESTORE_DEPRECATED_DECLARATION_WARNING \
   _Pragma("GCC diagnostic pop")
+#elif defined(_MSC_VER)
+#define ABSL_INTERNAL_DISABLE_DEPRECATED_DECLARATION_WARNING \
+  _Pragma("warning(push)") _Pragma("warning(disable: 4996)")
+#define ABSL_INTERNAL_RESTORE_DEPRECATED_DECLARATION_WARNING \
+  _Pragma("warning(pop)")
 #else
 #define ABSL_INTERNAL_DISABLE_DEPRECATED_DECLARATION_WARNING
 #define ABSL_INTERNAL_RESTORE_DEPRECATED_DECLARATION_WARNING
@@ -808,14 +816,43 @@
 //
 // See also the upstream documentation:
 // https://clang.llvm.org/docs/AttributeReference.html#lifetimebound
+// https://learn.microsoft.com/en-us/cpp/code-quality/c26816?view=msvc-170
 #if ABSL_HAVE_CPP_ATTRIBUTE(clang::lifetimebound)
 #define ABSL_ATTRIBUTE_LIFETIME_BOUND [[clang::lifetimebound]]
+#elif ABSL_HAVE_CPP_ATTRIBUTE(msvc::lifetimebound)
+#define ABSL_ATTRIBUTE_LIFETIME_BOUND [[msvc::lifetimebound]]
 #elif ABSL_HAVE_ATTRIBUTE(lifetimebound)
 #define ABSL_ATTRIBUTE_LIFETIME_BOUND __attribute__((lifetimebound))
 #else
 #define ABSL_ATTRIBUTE_LIFETIME_BOUND
 #endif
 
+// ABSL_INTERNAL_ATTRIBUTE_VIEW indicates that a type acts like a view i.e. a
+// raw (non-owning) pointer. This enables diagnoses similar to those enabled by
+// ABSL_ATTRIBUTE_LIFETIME_BOUND.
+//
+// See the following links for details:
+// https://reviews.llvm.org/D64448
+// https://lists.llvm.org/pipermail/cfe-dev/2018-November/060355.html
+#if ABSL_HAVE_CPP_ATTRIBUTE(gsl::Pointer)
+#define ABSL_INTERNAL_ATTRIBUTE_VIEW [[gsl::Pointer]]
+#else
+#define ABSL_INTERNAL_ATTRIBUTE_VIEW
+#endif
+
+// ABSL_INTERNAL_ATTRIBUTE_OWNER indicates that a type acts like a smart
+// (owning) pointer. This enables diagnoses similar to those enabled by
+// ABSL_ATTRIBUTE_LIFETIME_BOUND.
+//
+// See the following links for details:
+// https://reviews.llvm.org/D64448
+// https://lists.llvm.org/pipermail/cfe-dev/2018-November/060355.html
+#if ABSL_HAVE_CPP_ATTRIBUTE(gsl::Owner)
+#define ABSL_INTERNAL_ATTRIBUTE_OWNER [[gsl::Owner]]
+#else
+#define ABSL_INTERNAL_ATTRIBUTE_OWNER
+#endif
+
 // ABSL_ATTRIBUTE_TRIVIAL_ABI
 // Indicates that a type is "trivially relocatable" -- meaning it can be
 // relocated without invoking the constructor/destructor, using a form of move
@@ -871,4 +908,51 @@
 #define ABSL_ATTRIBUTE_NO_UNIQUE_ADDRESS
 #endif
 
+// ABSL_ATTRIBUTE_UNINITIALIZED
+//
+// GCC and Clang support a flag `-ftrivial-auto-var-init=<option>` (<option>
+// can be "zero" or "pattern") that can be used to initialize automatic stack
+// variables. Variables with this attribute will be left uninitialized,
+// overriding the compiler flag.
+//
+// See https://clang.llvm.org/docs/AttributeReference.html#uninitialized
+// and https://gcc.gnu.org/onlinedocs/gcc/Common-Variable-Attributes.html#index-uninitialized-variable-attribute
+#if ABSL_HAVE_CPP_ATTRIBUTE(clang::uninitialized)
+#define ABSL_ATTRIBUTE_UNINITIALIZED [[clang::uninitialized]]
+#elif ABSL_HAVE_CPP_ATTRIBUTE(gnu::uninitialized)
+#define ABSL_ATTRIBUTE_UNINITIALIZED [[gnu::uninitialized]]
+#elif ABSL_HAVE_ATTRIBUTE(uninitialized)
+#define ABSL_ATTRIBUTE_UNINITIALIZED __attribute__((uninitialized))
+#else
+#define ABSL_ATTRIBUTE_UNINITIALIZED
+#endif
+
+// ABSL_ATTRIBUTE_WARN_UNUSED
+//
+// Compilers routinely warn about trivial variables that are unused.  For
+// non-trivial types, this warning is suppressed since the
+// constructor/destructor may be intentional and load-bearing, for example, with
+// a RAII scoped lock.
+//
+// For example:
+//
+// class ABSL_ATTRIBUTE_WARN_UNUSED MyType {
+//  public:
+//   MyType();
+//   ~MyType();
+// };
+//
+// void foo() {
+//   // Warns with ABSL_ATTRIBUTE_WARN_UNUSED attribute present.
+//   MyType unused;
+// }
+//
+// See https://clang.llvm.org/docs/AttributeReference.html#warn-unused and
+// https://gcc.gnu.org/onlinedocs/gcc/C_002b_002b-Attributes.html#index-warn_005funused-type-attribute
+#if ABSL_HAVE_CPP_ATTRIBUTE(gnu::warn_unused)
+#define ABSL_ATTRIBUTE_WARN_UNUSED [[gnu::warn_unused]]
+#else
+#define ABSL_ATTRIBUTE_WARN_UNUSED
+#endif
+
 #endif  // ABSL_BASE_ATTRIBUTES_H_

Pods/abseil/absl/base/config.h

@@ -117,8 +117,8 @@
 //
 // LTS releases can be obtained from
 // https://github.com/abseil/abseil-cpp/releases.
-#define ABSL_LTS_RELEASE_VERSION 20240116
-#define ABSL_LTS_RELEASE_PATCH_LEVEL 1
+#define ABSL_LTS_RELEASE_VERSION 20240722
+#define ABSL_LTS_RELEASE_PATCH_LEVEL 0
 
 // Helper macro to convert a CPP variable to a string literal.
 #define ABSL_INTERNAL_DO_TOKEN_STR(x) #x
@@ -231,12 +231,11 @@ static_assert(ABSL_INTERNAL_INLINE_NAMESPACE_STR[0] != 'h' ||
 #endif
 
 // ABSL_HAVE_TLS is defined to 1 when __thread should be supported.
-// We assume __thread is supported on Linux or Asylo when compiled with Clang or
+// We assume __thread is supported on Linux when compiled with Clang or
 // compiled against libstdc++ with _GLIBCXX_HAVE_TLS defined.
 #ifdef ABSL_HAVE_TLS
 #error ABSL_HAVE_TLS cannot be directly set
-#elif (defined(__linux__) || defined(__ASYLO__)) && \
-    (defined(__clang__) || defined(_GLIBCXX_HAVE_TLS))
+#elif (defined(__linux__)) && (defined(__clang__) || defined(_GLIBCXX_HAVE_TLS))
 #define ABSL_HAVE_TLS 1
 #endif
 
@@ -275,52 +274,17 @@ static_assert(ABSL_INTERNAL_INLINE_NAMESPACE_STR[0] != 'h' ||
 #define ABSL_HAVE_STD_IS_TRIVIALLY_COPYABLE 1
 #endif
 
+
 // ABSL_HAVE_THREAD_LOCAL
 //
+// DEPRECATED - `thread_local` is available on all supported platforms.
 // Checks whether C++11's `thread_local` storage duration specifier is
 // supported.
 #ifdef ABSL_HAVE_THREAD_LOCAL
 #error ABSL_HAVE_THREAD_LOCAL cannot be directly set
-#elif defined(__APPLE__)
-// Notes:
-// * Xcode's clang did not support `thread_local` until version 8, and
-//   even then not for all iOS < 9.0.
-// * Xcode 9.3 started disallowing `thread_local` for 32-bit iOS simulator
-//   targeting iOS 9.x.
-// * Xcode 10 moves the deployment target check for iOS < 9.0 to link time
-//   making ABSL_HAVE_FEATURE unreliable there.
-//
-#if ABSL_HAVE_FEATURE(cxx_thread_local) && \
-    !(TARGET_OS_IPHONE && __IPHONE_OS_VERSION_MIN_REQUIRED < __IPHONE_9_0)
+#else
 #define ABSL_HAVE_THREAD_LOCAL 1
 #endif
-#else  // !defined(__APPLE__)
-#define ABSL_HAVE_THREAD_LOCAL 1
-#endif
-
-// There are platforms for which TLS should not be used even though the compiler
-// makes it seem like it's supported (Android NDK < r12b for example).
-// This is primarily because of linker problems and toolchain misconfiguration:
-// Abseil does not intend to support this indefinitely. Currently, the newest
-// toolchain that we intend to support that requires this behavior is the
-// r11 NDK - allowing for a 5 year support window on that means this option
-// is likely to be removed around June of 2021.
-// TLS isn't supported until NDK r12b per
-// https://developer.android.com/ndk/downloads/revision_history.html
-// Since NDK r16, `__NDK_MAJOR__` and `__NDK_MINOR__` are defined in
-// <android/ndk-version.h>. For NDK < r16, users should define these macros,
-// e.g. `-D__NDK_MAJOR__=11 -D__NKD_MINOR__=0` for NDK r11.
-#if defined(__ANDROID__) && defined(__clang__)
-#if __has_include(<android/ndk-version.h>)
-#include <android/ndk-version.h>
-#endif  // __has_include(<android/ndk-version.h>)
-#if defined(__ANDROID__) && defined(__clang__) && defined(__NDK_MAJOR__) && \
-    defined(__NDK_MINOR__) &&                                               \
-    ((__NDK_MAJOR__ < 12) || ((__NDK_MAJOR__ == 12) && (__NDK_MINOR__ < 1)))
-#undef ABSL_HAVE_TLS
-#undef ABSL_HAVE_THREAD_LOCAL
-#endif
-#endif  // defined(__ANDROID__) && defined(__clang__)
 
 // ABSL_HAVE_INTRINSIC_INT128
 //
@@ -379,9 +343,7 @@ static_assert(ABSL_INTERNAL_INLINE_NAMESPACE_STR[0] != 'h' ||
 #define ABSL_HAVE_EXCEPTIONS 1
 #endif  // defined(__EXCEPTIONS) && ABSL_HAVE_FEATURE(cxx_exceptions)
 // Handle remaining special cases and default to exceptions being supported.
-#elif !(defined(__GNUC__) && (__GNUC__ < 5) && !defined(__EXCEPTIONS)) && \
-    !(ABSL_INTERNAL_HAVE_MIN_GNUC_VERSION(5, 0) &&                        \
-      !defined(__cpp_exceptions)) &&                                      \
+#elif !(defined(__GNUC__) && !defined(__cpp_exceptions)) && \
     !(defined(_MSC_VER) && !defined(_CPPUNWIND))
 #define ABSL_HAVE_EXCEPTIONS 1
 #endif
@@ -416,9 +378,9 @@ static_assert(ABSL_INTERNAL_INLINE_NAMESPACE_STR[0] != 'h' ||
 #elif defined(__linux__) || defined(__APPLE__) || defined(__FreeBSD__) ||    \
     defined(_AIX) || defined(__ros__) || defined(__native_client__) ||       \
     defined(__asmjs__) || defined(__EMSCRIPTEN__) || defined(__Fuchsia__) || \
-    defined(__sun) || defined(__ASYLO__) || defined(__myriad2__) ||          \
-    defined(__HAIKU__) || defined(__OpenBSD__) || defined(__NetBSD__) ||     \
-    defined(__QNX__) || defined(__VXWORKS__) || defined(__hexagon__)
+    defined(__sun) || defined(__myriad2__) || defined(__HAIKU__) ||          \
+    defined(__OpenBSD__) || defined(__NetBSD__) || defined(__QNX__) ||       \
+    defined(__VXWORKS__) || defined(__hexagon__)
 #define ABSL_HAVE_MMAP 1
 #endif
 
@@ -902,9 +864,7 @@ static_assert(ABSL_INTERNAL_INLINE_NAMESPACE_STR[0] != 'h' ||
 #error ABSL_INTERNAL_HAS_CXA_DEMANGLE cannot be directly set
 #elif defined(OS_ANDROID) && (defined(__i386__) || defined(__x86_64__))
 #define ABSL_INTERNAL_HAS_CXA_DEMANGLE 0
-#elif defined(__GNUC__) && defined(__GNUC_MINOR__) &&            \
-    (__GNUC__ >= 4 || (__GNUC__ >= 3 && __GNUC_MINOR__ >= 4)) && \
-    !defined(__mips__)
+#elif defined(__GNUC__)
 #define ABSL_INTERNAL_HAS_CXA_DEMANGLE 1
 #elif defined(__clang__) && !defined(_MSC_VER)
 #define ABSL_INTERNAL_HAS_CXA_DEMANGLE 1
@@ -981,6 +941,27 @@ static_assert(ABSL_INTERNAL_INLINE_NAMESPACE_STR[0] != 'h' ||
 #define ABSL_HAVE_CONSTANT_EVALUATED 1
 #endif
 
+// ABSL_INTERNAL_CONSTEXPR_SINCE_CXXYY is used to conditionally define constexpr
+// for different C++ versions.
+//
+// These macros are an implementation detail and will be unconditionally removed
+// once the minimum supported C++ version catches up to a given version.
+//
+// For this reason, this symbol is considered INTERNAL and code outside of
+// Abseil must not use it.
+#if defined(ABSL_INTERNAL_CPLUSPLUS_LANG) && \
+    ABSL_INTERNAL_CPLUSPLUS_LANG >= 201703L
+#define ABSL_INTERNAL_CONSTEXPR_SINCE_CXX17 constexpr
+#else
+#define ABSL_INTERNAL_CONSTEXPR_SINCE_CXX17
+#endif
+#if defined(ABSL_INTERNAL_CPLUSPLUS_LANG) && \
+    ABSL_INTERNAL_CPLUSPLUS_LANG >= 202002L
+#define ABSL_INTERNAL_CONSTEXPR_SINCE_CXX20 constexpr
+#else
+#define ABSL_INTERNAL_CONSTEXPR_SINCE_CXX20
+#endif
+
 // ABSL_INTERNAL_EMSCRIPTEN_VERSION combines Emscripten's three version macros
 // into an integer that can be compared against.
 #ifdef ABSL_INTERNAL_EMSCRIPTEN_VERSION

Pods/abseil/absl/base/dynamic_annotations.h

@@ -252,25 +252,9 @@ ABSL_INTERNAL_END_EXTERN_C
 
 #else  // !defined(ABSL_HAVE_MEMORY_SANITIZER)
 
-// TODO(rogeeff): remove this branch
-#ifdef ABSL_HAVE_THREAD_SANITIZER
-#define ABSL_ANNOTATE_MEMORY_IS_INITIALIZED(address, size) \
-  do {                                                     \
-    (void)(address);                                       \
-    (void)(size);                                          \
-  } while (0)
-#define ABSL_ANNOTATE_MEMORY_IS_UNINITIALIZED(address, size) \
-  do {                                                       \
-    (void)(address);                                         \
-    (void)(size);                                            \
-  } while (0)
-#else
-
 #define ABSL_ANNOTATE_MEMORY_IS_INITIALIZED(address, size)    // empty
 #define ABSL_ANNOTATE_MEMORY_IS_UNINITIALIZED(address, size)  // empty
 
-#endif
-
 #endif  // ABSL_HAVE_MEMORY_SANITIZER
 
 // -------------------------------------------------------------------------

Pods/abseil/absl/base/internal/nullability_impl.h

@@ -19,10 +19,11 @@
 #include <type_traits>
 
 #include "absl/base/attributes.h"
+#include "absl/base/config.h"
 #include "absl/meta/type_traits.h"
 
 namespace absl {
-
+ABSL_NAMESPACE_BEGIN
 namespace nullability_internal {
 
 // `IsNullabilityCompatible` checks whether its first argument is a class
@@ -101,6 +102,7 @@ using NullabilityUnknownImpl
     = T;
 
 }  // namespace nullability_internal
+ABSL_NAMESPACE_END
 }  // namespace absl
 
 #endif  // ABSL_BASE_INTERNAL_NULLABILITY_IMPL_H_

Pods/abseil/absl/base/internal/poison.cc

@@ -0,0 +1,84 @@
+// Copyright 2024 The Abseil Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "absl/base/internal/poison.h"
+
+#include <cstdlib>
+
+#include "absl/base/config.h"
+#include "absl/base/internal/direct_mmap.h"
+
+#ifndef _WIN32
+#include <unistd.h>
+#endif
+
+#if defined(ABSL_HAVE_ADDRESS_SANITIZER)
+#include <sanitizer/asan_interface.h>
+#elif defined(ABSL_HAVE_MEMORY_SANITIZER)
+#include <sanitizer/msan_interface.h>
+#elif defined(ABSL_HAVE_MMAP)
+#include <sys/mman.h>
+#endif
+
+#if defined(_WIN32)
+#include <windows.h>
+#endif
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace base_internal {
+
+namespace {
+
+size_t GetPageSize() {
+#ifdef _WIN32
+  SYSTEM_INFO system_info;
+  GetSystemInfo(&system_info);
+  return system_info.dwPageSize;
+#elif defined(__wasm__) || defined(__asmjs__) || defined(__hexagon__)
+  return getpagesize();
+#else
+  return static_cast<size_t>(sysconf(_SC_PAGESIZE));
+#endif
+}
+
+}  // namespace
+
+void* InitializePoisonedPointerInternal() {
+  const size_t block_size = GetPageSize();
+#if defined(ABSL_HAVE_ADDRESS_SANITIZER)
+  void* data = malloc(block_size);
+  ASAN_POISON_MEMORY_REGION(data, block_size);
+#elif defined(ABSL_HAVE_MEMORY_SANITIZER)
+  void* data = malloc(block_size);
+  __msan_poison(data, block_size);
+#elif defined(ABSL_HAVE_MMAP)
+  void* data = DirectMmap(nullptr, block_size, PROT_NONE,
+                          MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
+  if (data == MAP_FAILED) return GetBadPointerInternal();
+#elif defined(_WIN32)
+  void* data = VirtualAlloc(nullptr, block_size, MEM_RESERVE | MEM_COMMIT,
+                            PAGE_NOACCESS);
+  if (data == nullptr) return GetBadPointerInternal();
+#else
+  return GetBadPointerInternal();
+#endif
+  // Return the middle of the block so that dereferences before and after the
+  // pointer will both crash.
+  return static_cast<char*>(data) + block_size / 2;
+}
+
+}  // namespace base_internal
+ABSL_NAMESPACE_END
+}  // namespace absl

Pods/abseil/absl/base/internal/poison.h

@@ -0,0 +1,59 @@
+// Copyright 2024 The Abseil Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#ifndef ABSL_BASE_INTERNAL_POISON_H_
+#define ABSL_BASE_INTERNAL_POISON_H_
+
+#include <cstdint>
+
+#include "absl/base/config.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace base_internal {
+
+inline void* GetBadPointerInternal() {
+  // A likely bad pointer. Pointers are required to have high bits that are all
+  // zero or all one for certain 64-bit CPUs. This pointer value will hopefully
+  // cause a crash on dereference and also be clearly recognizable as invalid.
+  constexpr uint64_t kBadPtr = 0xBAD0BAD0BAD0BAD0;
+  auto ret = reinterpret_cast<void*>(static_cast<uintptr_t>(kBadPtr));
+#ifndef _MSC_VER  // MSVC doesn't support inline asm with `volatile`.
+  // Try to prevent the compiler from optimizing out the undefined behavior.
+  asm volatile("" : : "r"(ret) :);  // NOLINT
+#endif
+  return ret;
+}
+
+void* InitializePoisonedPointerInternal();
+
+inline void* get_poisoned_pointer() {
+#if defined(NDEBUG) && !defined(ABSL_HAVE_ADDRESS_SANITIZER) && \
+    !defined(ABSL_HAVE_MEMORY_SANITIZER)
+  // In optimized non-sanitized builds, avoid the function-local static because
+  // of the codegen and runtime cost.
+  return GetBadPointerInternal();
+#else
+  // Non-optimized builds may use more robust implementation. Note that we can't
+  // use a static global because Chromium doesn't allow non-constinit globals.
+  static void* ptr = InitializePoisonedPointerInternal();
+  return ptr;
+#endif
+}
+
+}  // namespace base_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_BASE_INTERNAL_POISON_H_

Pods/abseil/absl/base/internal/spinlock.h

@@ -53,7 +53,7 @@ namespace absl {
 ABSL_NAMESPACE_BEGIN
 namespace base_internal {
 
-class ABSL_LOCKABLE SpinLock {
+class ABSL_LOCKABLE ABSL_ATTRIBUTE_WARN_UNUSED SpinLock {
  public:
   SpinLock() : lockword_(kSpinLockCooperative) {
     ABSL_TSAN_MUTEX_CREATE(this, __tsan_mutex_not_static);
@@ -89,7 +89,8 @@ class ABSL_LOCKABLE SpinLock {
   // acquisition was successful.  If the lock was not acquired, false is
   // returned.  If this SpinLock is free at the time of the call, TryLock
   // will return true with high probability.
-  inline bool TryLock() ABSL_EXCLUSIVE_TRYLOCK_FUNCTION(true) {
+  ABSL_MUST_USE_RESULT inline bool TryLock()
+      ABSL_EXCLUSIVE_TRYLOCK_FUNCTION(true) {
     ABSL_TSAN_MUTEX_PRE_LOCK(this, __tsan_mutex_try_lock);
     bool res = TryLockImpl();
     ABSL_TSAN_MUTEX_POST_LOCK(
@@ -120,7 +121,7 @@ class ABSL_LOCKABLE SpinLock {
   // Determine if the lock is held.  When the lock is held by the invoking
   // thread, true will always be returned. Intended to be used as
   // CHECK(lock.IsHeld()).
-  inline bool IsHeld() const {
+  ABSL_MUST_USE_RESULT inline bool IsHeld() const {
     return (lockword_.load(std::memory_order_relaxed) & kSpinLockHeld) != 0;
   }
 
@@ -202,6 +203,15 @@ class ABSL_LOCKABLE SpinLock {
 
 // Corresponding locker object that arranges to acquire a spinlock for
 // the duration of a C++ scope.
+//
+// TODO(b/176172494): Use only [[nodiscard]] when baseline is raised.
+// TODO(b/6695610): Remove forward declaration when #ifdef is no longer needed.
+#if ABSL_HAVE_CPP_ATTRIBUTE(nodiscard)
+class [[nodiscard]] SpinLockHolder;
+#else
+class ABSL_MUST_USE_RESULT ABSL_ATTRIBUTE_TRIVIAL_ABI SpinLockHolder;
+#endif
+
 class ABSL_SCOPED_LOCKABLE SpinLockHolder {
  public:
   inline explicit SpinLockHolder(SpinLock* l) ABSL_EXCLUSIVE_LOCK_FUNCTION(l)

Pods/abseil/absl/base/internal/unscaledcycleclock.cc

@@ -121,18 +121,6 @@ double UnscaledCycleClock::Frequency() {
   return aarch64_timer_frequency;
 }
 
-#elif defined(__riscv)
-
-int64_t UnscaledCycleClock::Now() {
-  int64_t virtual_timer_value;
-  asm volatile("rdcycle %0" : "=r"(virtual_timer_value));
-  return virtual_timer_value;
-}
-
-double UnscaledCycleClock::Frequency() {
-  return base_internal::NominalCPUFrequency();
-}
-
 #elif defined(_M_IX86) || defined(_M_X64)
 
 #pragma intrinsic(__rdtsc)

Pods/abseil/absl/base/internal/unscaledcycleclock_config.h

@@ -21,8 +21,8 @@
 
 // The following platforms have an implementation of a hardware counter.
 #if defined(__i386__) || defined(__x86_64__) || defined(__aarch64__) || \
-    defined(__powerpc__) || defined(__ppc__) || defined(__riscv) ||     \
-    defined(_M_IX86) || (defined(_M_X64) && !defined(_M_ARM64EC))
+    defined(__powerpc__) || defined(__ppc__) || defined(_M_IX86) ||     \
+    (defined(_M_X64) && !defined(_M_ARM64EC))
 #define ABSL_HAVE_UNSCALED_CYCLECLOCK_IMPLEMENTATION 1
 #else
 #define ABSL_HAVE_UNSCALED_CYCLECLOCK_IMPLEMENTATION 0
@@ -53,8 +53,8 @@
 #if ABSL_USE_UNSCALED_CYCLECLOCK
 // This macro can be used to test if UnscaledCycleClock::Frequency()
 // is NominalCPUFrequency() on a particular platform.
-#if (defined(__i386__) || defined(__x86_64__) || defined(__riscv) || \
-     defined(_M_IX86) || defined(_M_X64))
+#if (defined(__i386__) || defined(__x86_64__) || defined(_M_IX86) || \
+     defined(_M_X64))
 #define ABSL_INTERNAL_UNSCALED_CYCLECLOCK_FREQUENCY_IS_CPU_FREQUENCY
 #endif
 #endif

Pods/abseil/absl/base/macros.h

@@ -138,4 +138,52 @@ ABSL_NAMESPACE_END
 #define ABSL_INTERNAL_RETHROW do {} while (false)
 #endif  // ABSL_HAVE_EXCEPTIONS
 
+// ABSL_DEPRECATE_AND_INLINE()
+//
+// Marks a function or type alias as deprecated and tags it to be picked up for
+// automated refactoring by go/cpp-inliner. It can added to inline function
+// definitions or type aliases. It should only be used within a header file. It
+// differs from `ABSL_DEPRECATED` in the following ways:
+//
+// 1. New uses of the function or type will be discouraged via Tricorder
+//    warnings.
+// 2. If enabled via `METADATA`, automated changes will be sent out inlining the
+//    functions's body or replacing the type where it is used.
+//
+// For example:
+//
+// ABSL_DEPRECATE_AND_INLINE() inline int OldFunc(int x) {
+//   return NewFunc(x, 0);
+// }
+//
+// will mark `OldFunc` as deprecated, and the go/cpp-inliner service will
+// replace calls to `OldFunc(x)` with calls to `NewFunc(x, 0)`. Once all calls
+// to `OldFunc` have been replaced, `OldFunc` can be deleted.
+//
+// See go/cpp-inliner for more information.
+//
+// Note: go/cpp-inliner is Google-internal service for automated refactoring.
+// While open-source users do not have access to this service, the macro is
+// provided for compatibility, and so that users receive deprecation warnings.
+#if ABSL_HAVE_CPP_ATTRIBUTE(deprecated) && \
+    ABSL_HAVE_CPP_ATTRIBUTE(clang::annotate)
+#define ABSL_DEPRECATE_AND_INLINE() [[deprecated, clang::annotate("inline-me")]]
+#elif ABSL_HAVE_CPP_ATTRIBUTE(deprecated)
+#define ABSL_DEPRECATE_AND_INLINE() [[deprecated]]
+#else
+#define ABSL_DEPRECATE_AND_INLINE()
+#endif
+
+// Requires the compiler to prove that the size of the given object is at least
+// the expected amount.
+#if ABSL_HAVE_ATTRIBUTE(diagnose_if) && ABSL_HAVE_BUILTIN(__builtin_object_size)
+#define ABSL_INTERNAL_NEED_MIN_SIZE(Obj, N)                     \
+  __attribute__((diagnose_if(__builtin_object_size(Obj, 0) < N, \
+                             "object size provably too small "  \
+                             "(this would corrupt memory)",     \
+                             "error")))
+#else
+#define ABSL_INTERNAL_NEED_MIN_SIZE(Obj, N)
+#endif
+
 #endif  // ABSL_BASE_MACROS_H_

Pods/abseil/absl/base/no_destructor.h

@@ -21,14 +21,13 @@
 // such an object survives during program exit (and can be safely accessed at
 // any time).
 //
-// Objects of such type, if constructed safely and under the right conditions,
-// provide two main benefits over other alternatives:
-//
-//   * Global objects not normally allowed due to concerns of destruction order
-//     (i.e. no "complex globals") can be safely allowed, provided that such
-//     objects can be constant initialized.
-//   * Function scope static objects can be optimized to avoid heap allocation,
-//     pointer chasing, and allow lazy construction.
+// absl::NoDestructor<T> is useful when when a variable has static storage
+// duration but its type has a non-trivial destructor. Global constructors are
+// not recommended because of the C++'s static initialization order fiasco (See
+// https://en.cppreference.com/w/cpp/language/siof). Global destructors are not
+// allowed due to similar concerns about destruction ordering. Using
+// absl::NoDestructor<T> as a function-local static prevents both of these
+// issues.
 //
 // See below for complete details.
 
@@ -41,6 +40,7 @@
 #include <utility>
 
 #include "absl/base/config.h"
+#include "absl/base/nullability.h"
 
 namespace absl {
 ABSL_NAMESPACE_BEGIN
@@ -49,8 +49,8 @@ ABSL_NAMESPACE_BEGIN
 //
 // NoDestructor<T> is a wrapper around an object of type T that behaves as an
 // object of type T but never calls T's destructor. NoDestructor<T> makes it
-// safer and/or more efficient to use such objects in static storage contexts:
-// as global or function scope static variables.
+// safer and/or more efficient to use such objects in static storage contexts,
+// ideally as function scope static variables.
 //
 // An instance of absl::NoDestructor<T> has similar type semantics to an
 // instance of T:
@@ -61,9 +61,6 @@ ABSL_NAMESPACE_BEGIN
 //   `->`, `*`, and `get()`.
 //   (Note that `const NoDestructor<T>` works like a pointer to const `T`.)
 //
-// An object of type NoDestructor<T> should be defined in static storage:
-// as either a global static object, or as a function scope static variable.
-//
 // Additionally, NoDestructor<T> provides the following benefits:
 //
 // * Never calls T's destructor for the object
@@ -71,24 +68,7 @@ ABSL_NAMESPACE_BEGIN
 //   lazily constructed.
 //
 // An object of type NoDestructor<T> is "trivially destructible" in the notion
-// that its destructor is never run. Provided that an object of this type can be
-// safely initialized and does not need to be cleaned up on program shutdown,
-// NoDestructor<T> allows you to define global static variables, since Google's
-// C++ style guide ban on such objects doesn't apply to objects that are
-// trivially destructible.
-//
-// Usage as Global Static Variables
-//
-// NoDestructor<T> allows declaration of a global object with a non-trivial
-// constructor in static storage without needing to add a destructor.
-// However, such objects still need to worry about initialization order, so
-// such objects should be const initialized:
-//
-//    // Global or namespace scope.
-//    ABSL_CONST_INIT absl::NoDestructor<MyRegistry> reg{"foo", "bar", 8008};
-//
-// Note that if your object already has a trivial destructor, you don't need to
-// use NoDestructor<T>.
+// that its destructor is never run.
 //
 // Usage as Function Scope Static Variables
 //
@@ -114,6 +94,21 @@ ABSL_NAMESPACE_BEGIN
 //     return *x;
 //   }
 //
+// Usage as Global Static Variables
+//
+// NoDestructor<T> allows declaration of a global object of type T that has a
+// non-trivial destructor since its destructor is never run. However, such
+// objects still need to worry about initialization order, so such use is not
+// recommended, strongly discouraged by the Google C++ Style Guide, and outright
+// banned in Chromium.
+// See https://google.github.io/styleguide/cppguide.html#Static_and_Global_Variables
+//
+//    // Global or namespace scope.
+//    absl::NoDestructor<MyRegistry> reg{"foo", "bar", 8008};
+//
+// Note that if your object already has a trivial destructor, you don't need to
+// use NoDestructor<T>.
+//
 template <typename T>
 class NoDestructor {
  public:
@@ -140,11 +135,11 @@ class NoDestructor {
   // Pretend to be a smart pointer to T with deep constness.
   // Never returns a null pointer.
   T& operator*() { return *get(); }
-  T* operator->() { return get(); }
-  T* get() { return impl_.get(); }
+  absl::Nonnull<T*> operator->() { return get(); }
+  absl::Nonnull<T*> get() { return impl_.get(); }
   const T& operator*() const { return *get(); }
-  const T* operator->() const { return get(); }
-  const T* get() const { return impl_.get(); }
+  absl::Nonnull<const T*> operator->() const { return get(); }
+  absl::Nonnull<const T*> get() const { return impl_.get(); }
 
  private:
   class DirectImpl {
@@ -152,8 +147,8 @@ class NoDestructor {
     template <typename... Args>
     explicit constexpr DirectImpl(Args&&... args)
         : value_(std::forward<Args>(args)...) {}
-    const T* get() const { return &value_; }
-    T* get() { return &value_; }
+    absl::Nonnull<const T*> get() const { return &value_; }
+    absl::Nonnull<T*> get() { return &value_; }
 
    private:
     T value_;
@@ -165,14 +160,14 @@ class NoDestructor {
     explicit PlacementImpl(Args&&... args) {
       new (&space_) T(std::forward<Args>(args)...);
     }
-    const T* get() const {
+    absl::Nonnull<const T*> get() const {
       return Launder(reinterpret_cast<const T*>(&space_));
     }
-    T* get() { return Launder(reinterpret_cast<T*>(&space_)); }
+    absl::Nonnull<T*> get() { return Launder(reinterpret_cast<T*>(&space_)); }
 
    private:
     template <typename P>
-    static P* Launder(P* p) {
+    static absl::Nonnull<P*> Launder(absl::Nonnull<P*> p) {
 #if defined(__cpp_lib_launder) && __cpp_lib_launder >= 201606L
       return std::launder(p);
 #elif ABSL_HAVE_BUILTIN(__builtin_launder)

Pods/abseil/absl/base/nullability.h

@@ -128,9 +128,17 @@
 //
 // By default, nullability annotations are applicable to raw and smart
 // pointers. User-defined types can indicate compatibility with nullability
-// annotations by providing an `absl_nullability_compatible` nested type. The
-// actual definition of this inner type is not relevant as it is used merely as
-// a marker. It is common to use a using declaration of
+// annotations by adding the ABSL_NULLABILITY_COMPATIBLE attribute.
+//
+// // Example:
+// struct ABSL_NULLABILITY_COMPATIBLE MyPtr {
+//   ...
+// };
+//
+// Note: For the time being, nullability-compatible classes should additionally
+// be marked with an `absl_nullability_compatible` nested type (this will soon
+// be deprecated). The actual definition of this inner type is not relevant as
+// it is used merely as a marker. It is common to use a using declaration of
 // `absl_nullability_compatible` set to void.
 //
 // // Example:
@@ -150,14 +158,16 @@
 #ifndef ABSL_BASE_NULLABILITY_H_
 #define ABSL_BASE_NULLABILITY_H_
 
+#include "absl/base/config.h"
 #include "absl/base/internal/nullability_impl.h"
 
 namespace absl {
+ABSL_NAMESPACE_BEGIN
 
 // absl::Nonnull
 //
 // The indicated pointer is never null. It is the responsibility of the provider
-// of this pointer across an API boundary to ensure that the pointer is never be
+// of this pointer across an API boundary to ensure that the pointer is never
 // set to null. Consumers of this pointer across an API boundary may safely
 // dereference the pointer.
 //
@@ -198,9 +208,9 @@ using Nullable = nullability_internal::NullableImpl<T>;
 // migrated into one of the above two nullability states: `Nonnull<T>` or
 //  `Nullable<T>`.
 //
-// NOTE: Because this annotation is the global default state, pointers without
-// any annotation are assumed to have "unknown" semantics. This assumption is
-// designed to minimize churn and reduce clutter within the codebase.
+// NOTE: Because this annotation is the global default state, unannotated
+// pointers are assumed to have "unknown" semantics. This assumption is designed
+// to minimize churn and reduce clutter within the codebase.
 //
 // Example:
 //
@@ -219,6 +229,22 @@ using Nullable = nullability_internal::NullableImpl<T>;
 template <typename T>
 using NullabilityUnknown = nullability_internal::NullabilityUnknownImpl<T>;
 
+ABSL_NAMESPACE_END
 }  // namespace absl
 
+// ABSL_NULLABILITY_COMPATIBLE
+//
+// Indicates that a class is compatible with nullability annotations.
+//
+// For example:
+//
+// struct ABSL_NULLABILITY_COMPATIBLE MyPtr {
+//   ...
+// };
+#if ABSL_HAVE_FEATURE(nullability_on_classes)
+#define ABSL_NULLABILITY_COMPATIBLE _Nullable
+#else
+#define ABSL_NULLABILITY_COMPATIBLE
+#endif
+
 #endif  // ABSL_BASE_NULLABILITY_H_

Pods/abseil/absl/base/optimization.h

@@ -18,12 +18,23 @@
 // -----------------------------------------------------------------------------
 //
 // This header file defines portable macros for performance optimization.
+//
+// This header is included in both C++ code and legacy C code and thus must
+// remain compatible with both C and C++. C compatibility will be removed if
+// the legacy code is removed or converted to C++. Do not include this header in
+// new code that requires C compatibility or assume C compatibility will remain
+// indefinitely.
 
 #ifndef ABSL_BASE_OPTIMIZATION_H_
 #define ABSL_BASE_OPTIMIZATION_H_
 
 #include <assert.h>
 
+#ifdef __cplusplus
+// Included for std::unreachable()
+#include <utility>
+#endif  // __cplusplus
+
 #include "absl/base/config.h"
 #include "absl/base/options.h"
 

Pods/abseil/absl/base/options.h

@@ -226,7 +226,7 @@
 // allowed.
 
 #define ABSL_OPTION_USE_INLINE_NAMESPACE 1
-#define ABSL_OPTION_INLINE_NAMESPACE_NAME lts_20240116
+#define ABSL_OPTION_INLINE_NAMESPACE_NAME lts_20240722
 
 // ABSL_OPTION_HARDENED
 //

Pods/abseil/absl/base/prefetch.h

@@ -129,7 +129,7 @@ void PrefetchToLocalCacheNta(const void* addr);
 //
 //  void* Arena::Allocate(size_t size) {
 //    void* ptr = AllocateBlock(size);
-//    absl::PrefetchToLocalCacheForWrite(p);
+//    absl::PrefetchToLocalCacheForWrite(ptr);
 //    return ptr;
 //  }
 //