Fix ATOMIC_<TYPE>_LOCK_FREE macros on Windows. Previously the ATOMIC_<TYPE>_LOCK_FREE macros were implemented using __GCC_ATOMIC_<TYPE>_LOCK_FREE but GCC specific macros are defined when -fms-compatibility is specified. To avoid this Libc++ now tries to use the newly added __CLANG_ATOMIC_<TYPE>_LOCK_FREE macros instead, and only falls back to the GCC versions when the Clang ones aren't available. git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@300920 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/include/atomic b/include/atomic index a17bdce..f55e28f 100644 --- a/include/atomic +++ b/include/atomic
@@ -861,16 +861,29 @@ return __y; } -#define ATOMIC_BOOL_LOCK_FREE __GCC_ATOMIC_BOOL_LOCK_FREE -#define ATOMIC_CHAR_LOCK_FREE __GCC_ATOMIC_CHAR_LOCK_FREE -#define ATOMIC_CHAR16_T_LOCK_FREE __GCC_ATOMIC_CHAR16_T_LOCK_FREE -#define ATOMIC_CHAR32_T_LOCK_FREE __GCC_ATOMIC_CHAR32_T_LOCK_FREE -#define ATOMIC_WCHAR_T_LOCK_FREE __GCC_ATOMIC_WCHAR_T_LOCK_FREE -#define ATOMIC_SHORT_LOCK_FREE __GCC_ATOMIC_SHORT_LOCK_FREE -#define ATOMIC_INT_LOCK_FREE __GCC_ATOMIC_INT_LOCK_FREE -#define ATOMIC_LONG_LOCK_FREE __GCC_ATOMIC_LONG_LOCK_FREE -#define ATOMIC_LLONG_LOCK_FREE __GCC_ATOMIC_LLONG_LOCK_FREE -#define ATOMIC_POINTER_LOCK_FREE __GCC_ATOMIC_POINTER_LOCK_FREE +#if defined(__CLANG_ATOMIC_BOOL_LOCK_FREE) +# define ATOMIC_BOOL_LOCK_FREE __CLANG_ATOMIC_BOOL_LOCK_FREE +# define ATOMIC_CHAR_LOCK_FREE __CLANG_ATOMIC_CHAR_LOCK_FREE +# define ATOMIC_CHAR16_T_LOCK_FREE __CLANG_ATOMIC_CHAR16_T_LOCK_FREE +# define ATOMIC_CHAR32_T_LOCK_FREE __CLANG_ATOMIC_CHAR32_T_LOCK_FREE +# define ATOMIC_WCHAR_T_LOCK_FREE __CLANG_ATOMIC_WCHAR_T_LOCK_FREE +# define ATOMIC_SHORT_LOCK_FREE __CLANG_ATOMIC_SHORT_LOCK_FREE +# define ATOMIC_INT_LOCK_FREE __CLANG_ATOMIC_INT_LOCK_FREE +# define ATOMIC_LONG_LOCK_FREE __CLANG_ATOMIC_LONG_LOCK_FREE +# define ATOMIC_LLONG_LOCK_FREE __CLANG_ATOMIC_LLONG_LOCK_FREE +# define ATOMIC_POINTER_LOCK_FREE __CLANG_ATOMIC_POINTER_LOCK_FREE +#else +# define ATOMIC_BOOL_LOCK_FREE __GCC_ATOMIC_BOOL_LOCK_FREE +# define ATOMIC_CHAR_LOCK_FREE __GCC_ATOMIC_CHAR_LOCK_FREE +# define ATOMIC_CHAR16_T_LOCK_FREE __GCC_ATOMIC_CHAR16_T_LOCK_FREE +# define ATOMIC_CHAR32_T_LOCK_FREE __GCC_ATOMIC_CHAR32_T_LOCK_FREE +# define ATOMIC_WCHAR_T_LOCK_FREE __GCC_ATOMIC_WCHAR_T_LOCK_FREE +# define ATOMIC_SHORT_LOCK_FREE __GCC_ATOMIC_SHORT_LOCK_FREE +# define ATOMIC_INT_LOCK_FREE __GCC_ATOMIC_INT_LOCK_FREE +# define ATOMIC_LONG_LOCK_FREE __GCC_ATOMIC_LONG_LOCK_FREE +# define ATOMIC_LLONG_LOCK_FREE __GCC_ATOMIC_LLONG_LOCK_FREE +# define ATOMIC_POINTER_LOCK_FREE __GCC_ATOMIC_POINTER_LOCK_FREE +#endif // general atomic<T>
