diff options
Diffstat (limited to 'absl/base/config.h')
| -rw-r--r-- | absl/base/config.h | 66 |
1 files changed, 58 insertions, 8 deletions
diff --git a/absl/base/config.h b/absl/base/config.h index f54466de..b1e095d3 100644 --- a/absl/base/config.h +++ b/absl/base/config.h @@ -154,6 +154,12 @@ static_assert(ABSL_INTERNAL_INLINE_NAMESPACE_STR[0] != 'h' || #define ABSL_INTERNAL_HAS_KEYWORD(x) 0 #endif +#ifdef __has_feature +#define ABSL_HAVE_FEATURE(f) __has_feature(f) +#else +#define ABSL_HAVE_FEATURE(f) 0 +#endif + // ABSL_HAVE_TLS is defined to 1 when __thread should be supported. // We assume __thread is supported on Linux when compiled with Clang or compiled // against libstdc++ with _GLIBCXX_HAVE_TLS defined. @@ -226,11 +232,9 @@ static_assert(ABSL_INTERNAL_INLINE_NAMESPACE_STR[0] != 'h' || // * 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 __has_feature unreliable there. +// making ABSL_HAVE_FEATURE unreliable there. // -// Otherwise, `__has_feature` is only supported by Clang so it has be inside -// `defined(__APPLE__)` check. -#if __has_feature(cxx_thread_local) && \ +#if ABSL_HAVE_FEATURE(cxx_thread_local) && \ !(TARGET_OS_IPHONE && __IPHONE_OS_VERSION_MIN_REQUIRED < __IPHONE_9_0) #define ABSL_HAVE_THREAD_LOCAL 1 #endif @@ -312,15 +316,15 @@ static_assert(ABSL_INTERNAL_INLINE_NAMESPACE_STR[0] != 'h' || #if __clang_major__ > 3 || (__clang_major__ == 3 && __clang_minor__ >= 6) // Clang >= 3.6 -#if __has_feature(cxx_exceptions) +#if ABSL_HAVE_FEATURE(cxx_exceptions) #define ABSL_HAVE_EXCEPTIONS 1 -#endif // __has_feature(cxx_exceptions) +#endif // ABSL_HAVE_FEATURE(cxx_exceptions) #else // Clang < 3.6 // http://releases.llvm.org/3.6.0/tools/clang/docs/ReleaseNotes.html#the-exceptions-macro -#if defined(__EXCEPTIONS) && __has_feature(cxx_exceptions) +#if defined(__EXCEPTIONS) && ABSL_HAVE_FEATURE(cxx_exceptions) #define ABSL_HAVE_EXCEPTIONS 1 -#endif // defined(__EXCEPTIONS) && __has_feature(cxx_exceptions) +#endif // defined(__EXCEPTIONS) && ABSL_HAVE_FEATURE(cxx_exceptions) #endif // __clang_major__ > 3 || (__clang_major__ == 3 && __clang_minor__ >= 6) // Handle remaining special cases and default to exceptions being supported. @@ -661,4 +665,50 @@ static_assert(ABSL_INTERNAL_INLINE_NAMESPACE_STR[0] != 'h' || #define ABSL_DLL #endif // defined(_MSC_VER) +// ABSL_HAVE_MEMORY_SANITIZER +// +// MemorySanitizer (MSan) is a detector of uninitialized reads. It consists of +// a compiler instrumentation module and a run-time library. +#ifdef ABSL_HAVE_MEMORY_SANITIZER +#error "ABSL_HAVE_MEMORY_SANITIZER cannot be directly set." +#elif defined(MEMORY_SANITIZER) +// The MEMORY_SANITIZER macro is deprecated but we will continue to honor it +// for now. +#define ABSL_HAVE_MEMORY_SANITIZER 1 +#elif defined(__SANITIZE_MEMORY__) +#define ABSL_HAVE_MEMORY_SANITIZER 1 +#elif !defined(__native_client__) && ABSL_HAVE_FEATURE(memory_sanitizer) +#define ABSL_HAVE_MEMORY_SANITIZER 1 +#endif + +// ABSL_HAVE_THREAD_SANITIZER +// +// ThreadSanitizer (TSan) is a fast data race detector. +#ifdef ABSL_HAVE_THREAD_SANITIZER +#error "ABSL_HAVE_THREAD_SANITIZER cannot be directly set." +#elif defined(THREAD_SANITIZER) +// The THREAD_SANITIZER macro is deprecated but we will continue to honor it +// for now. +#define ABSL_HAVE_THREAD_SANITIZER 1 +#elif defined(__SANITIZE_THREAD__) +#define ABSL_HAVE_THREAD_SANITIZER 1 +#elif ABSL_HAVE_FEATURE(thread_sanitizer) +#define ABSL_HAVE_THREAD_SANITIZER 1 +#endif + +// ABSL_HAVE_ADDRESS_SANITIZER +// +// AddressSanitizer (ASan) is a fast memory error detector. +#ifdef ABSL_HAVE_ADDRESS_SANITIZER +#error "ABSL_HAVE_ADDRESS_SANITIZER cannot be directly set." +#elif defined(ADDRESS_SANITIZER) +// The ADDRESS_SANITIZER macro is deprecated but we will continue to honor it +// for now. +#define ABSL_HAVE_ADDRESS_SANITIZER 1 +#elif defined(__SANITIZE_ADDRESS__) +#define ABSL_HAVE_ADDRESS_SANITIZER 1 +#elif ABSL_HAVE_FEATURE(address_sanitizer) +#define ABSL_HAVE_ADDRESS_SANITIZER 1 +#endif + #endif // ABSL_BASE_CONFIG_H_ |