diff options
Diffstat (limited to 'mfbt/Attributes.h')
| -rw-r--r-- | mfbt/Attributes.h | 17 |
1 files changed, 10 insertions, 7 deletions
diff --git a/mfbt/Attributes.h b/mfbt/Attributes.h index df6172f31..a38257969 100644 --- a/mfbt/Attributes.h +++ b/mfbt/Attributes.h @@ -256,6 +256,8 @@ # define MOZ_MUST_USE #endif +#ifdef __cplusplus + /** * MOZ_FALLTHROUGH is an annotation to suppress compiler warnings about switch * cases that fall through without a break or return statement. MOZ_FALLTHROUGH @@ -282,9 +284,14 @@ * return 5; * } */ -#if defined(__clang__) && __cplusplus >= 201103L - /* clang's fallthrough annotations are only available starting in C++11. */ +#ifndef __has_cpp_attribute +# define __has_cpp_attribute(x) 0 +#endif + +#if __has_cpp_attribute(clang::fallthrough) # define MOZ_FALLTHROUGH [[clang::fallthrough]] +#elif __has_cpp_attribute(gnu::fallthrough) +# define MOZ_FALLTHROUGH [[gnu::fallthrough]] #elif defined(_MSC_VER) /* * MSVC's __fallthrough annotations are checked by /analyze (Code Analysis): @@ -296,8 +303,6 @@ # define MOZ_FALLTHROUGH /* FALLTHROUGH */ #endif -#ifdef __cplusplus - /* * The following macros are attributes that support the static analysis plugin * included with Mozilla, and will be implemented (when such support is enabled) @@ -562,9 +567,7 @@ # define MOZ_HAVE_REF_QUALIFIERS #elif defined(__GNUC__) # include "mozilla/Compiler.h" -# if MOZ_GCC_VERSION_AT_LEAST(4, 8, 1) -# define MOZ_HAVE_REF_QUALIFIERS -# endif +# define MOZ_HAVE_REF_QUALIFIERS #endif #endif /* __cplusplus */ |