diff options
Diffstat (limited to 'firmware/2lib/include/2common.h')
| -rw-r--r-- | firmware/2lib/include/2common.h | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/firmware/2lib/include/2common.h b/firmware/2lib/include/2common.h index d49074f8..600dffbe 100644 --- a/firmware/2lib/include/2common.h +++ b/firmware/2lib/include/2common.h @@ -53,6 +53,27 @@ struct vb2_public_key; #endif #endif +// Have a generic fall-through for different versions of C/C++. +// Taken from boringssl. +#if defined(__cplusplus) && __cplusplus >= 201703L +#define VBOOT_FALLTHROUGH [[fallthrough]] +#elif defined(__cplusplus) && __cplusplus >= 201103L && defined(__clang__) +#define VBOOT_FALLTHROUGH [[clang::fallthrough]] +#elif defined(__cplusplus) && __cplusplus >= 201103L && defined(__GNUC__) && \ + __GNUC__ >= 7 +#define VBOOT_FALLTHROUGH [[gnu::fallthrough]] +#elif defined(__GNUC__) && __GNUC__ >= 7 // gcc 7 +#define VBOOT_FALLTHROUGH __attribute__ ((fallthrough)) +#elif defined(__clang__) +#if __has_attribute(fallthrough) +#define VBOOT_FALLTHROUGH __attribute__ ((fallthrough)) +#else // clang versions that do not support fallthrough. +#define VBOOT_FALLTHROUGH +#endif +#else // C++11 on gcc 6, and all other cases +#define VBOOT_FALLTHROUGH +#endif + /** * Round up a number to a multiple of VB2_WORKBUF_ALIGN * |