diff options
Diffstat (limited to 'libvpx/tools_common.h')
| -rw-r--r-- | libvpx/tools_common.h | 18 |
1 files changed, 15 insertions, 3 deletions
diff --git a/libvpx/tools_common.h b/libvpx/tools_common.h index 4e8851fc1..b9cfb9cc8 100644 --- a/libvpx/tools_common.h +++ b/libvpx/tools_common.h @@ -116,12 +116,24 @@ extern "C" { #define VPX_NO_RETURN #endif +// Tells the compiler to perform `printf` format string checking if the +// compiler supports it; see the 'format' attribute in +// <https://gcc.gnu.org/onlinedocs/gcc/Common-Function-Attributes.html>. +#define VPX_TOOLS_FORMAT_PRINTF(string_index, first_to_check) +#if defined(__has_attribute) +#if __has_attribute(format) +#undef VPX_TOOLS_FORMAT_PRINTF +#define VPX_TOOLS_FORMAT_PRINTF(string_index, first_to_check) \ + __attribute__((__format__(__printf__, string_index, first_to_check))) +#endif +#endif + /* Sets a stdio stream into binary mode */ FILE *set_binary_mode(FILE *stream); -VPX_NO_RETURN void die(const char *fmt, ...); -VPX_NO_RETURN void fatal(const char *fmt, ...); -void warn(const char *fmt, ...); +VPX_NO_RETURN void die(const char *fmt, ...) VPX_TOOLS_FORMAT_PRINTF(1, 2); +VPX_NO_RETURN void fatal(const char *fmt, ...) VPX_TOOLS_FORMAT_PRINTF(1, 2); +void warn(const char *fmt, ...) VPX_TOOLS_FORMAT_PRINTF(1, 2); VPX_NO_RETURN void die_codec(vpx_codec_ctx_t *ctx, const char *s); |