diff options
| author | David Lamparter <equinox@opensourcerouting.org> | 2018-08-15 05:49:29 +0200 |
|---|---|---|
| committer | David Lamparter <equinox@opensourcerouting.org> | 2018-08-21 20:34:58 +0200 |
| commit | bd27ea43e9972d1c8ae794441fd2db83a8d896fc (patch) | |
| tree | 62796d85e5e98b9919fba7159fda7349fb036ac1 /lib/compiler.h | |
| parent | 5ab5e410d0ee14924e3a6d91336df176a4f06655 (diff) | |
build: wrap "fallthrough" attr
This generates a warning on gcc versions before 7.0.
Signed-off-by: David Lamparter <equinox@diac24.net>
Diffstat (limited to 'lib/compiler.h')
| -rw-r--r-- | lib/compiler.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/lib/compiler.h b/lib/compiler.h index b19c33f65e..24b8fafd10 100644 --- a/lib/compiler.h +++ b/lib/compiler.h @@ -24,6 +24,9 @@ #if __clang_major__ > 3 || (__clang_major__ == 3 && __clang_minor__ >= 5) # define _RET_NONNULL , returns_nonnull #endif +#if __has_attribute(fallthrough) +# define _FALLTHROUGH __attribute__((fallthrough)); +#endif # define _CONSTRUCTOR(x) constructor(x) #elif defined(__GNUC__) #if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 9) @@ -34,6 +37,9 @@ # define _DESTRUCTOR(x) destructor(x) # define _ALLOC_SIZE(x) alloc_size(x) #endif +#if __GNUC__ >= 7 +# define _FALLTHROUGH __attribute__((fallthrough)); +#endif #endif #ifdef __sun @@ -55,6 +61,9 @@ #ifndef _ALLOC_SIZE # define _ALLOC_SIZE(x) #endif +#ifndef _FALLTHROUGH +#define _FALLTHROUGH +#endif /* * for warnings on macros, put in the macro content like this: |