diff options
Diffstat (limited to 'include/qemu/compiler.h')
| -rw-r--r-- | include/qemu/compiler.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/include/qemu/compiler.h b/include/qemu/compiler.h index 1b9e58e..df9ec08 100644 --- a/include/qemu/compiler.h +++ b/include/qemu/compiler.h @@ -222,4 +222,15 @@ extern void QEMU_NORETURN QEMU_ERROR("code path is reachable") #define qemu_build_not_reached() g_assert_not_reached() #endif +/** + * In most cases, normal "fallthrough" comments are good enough for + * switch-case statements, but sometimes the compiler has problems + * with those. In that case you can use QEMU_FALLTHROUGH instead. + */ +#if __has_attribute(fallthrough) +# define QEMU_FALLTHROUGH __attribute__((fallthrough)) +#else +# define QEMU_FALLTHROUGH do {} while (0) /* fallthrough */ +#endif + #endif /* COMPILER_H */ |