diff options
| author | David Lamparter <equinox@diac24.net> | 2021-03-26 18:11:21 +0100 |
|---|---|---|
| committer | David Lamparter <equinox@diac24.net> | 2021-03-30 22:32:59 +0200 |
| commit | cb4928ce77c089ae521301776ed90e994c29800c (patch) | |
| tree | 3e595e3b458c3abed63c485eac59cfb229fdb3a7 /lib/printfrr.h | |
| parent | 2d9a4e2931e4f20c6bc49b09956a1e350664e3f2 (diff) | |
lib: add `FMT_NSTD()` for non-standard printf exts
... to suppress the warnings when using something that isn't quite ISO C
compatible and would otherwise cause compiler warnings from `-Wformat`.
Signed-off-by: David Lamparter <equinox@diac24.net>
Diffstat (limited to 'lib/printfrr.h')
| -rw-r--r-- | lib/printfrr.h | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/lib/printfrr.h b/lib/printfrr.h index 9dd20f0a8f..8245a664b3 100644 --- a/lib/printfrr.h +++ b/lib/printfrr.h @@ -251,6 +251,31 @@ static inline ssize_t bputch(struct fbuf *buf, char ch) return 1; } +/* when using non-ISO-C compatible extension specifiers... */ + +#ifdef _FRR_ATTRIBUTE_PRINTFRR +#define FMT_NSTD_BEGIN +#define FMT_NSTD_END +#else /* !_FRR_ATTRIBUTE_PRINTFRR */ +#define FMT_NSTD_BEGIN \ + _Pragma("GCC diagnostic push") \ + _Pragma("GCC diagnostic ignored \"-Wformat\"") \ + /* end */ +#define FMT_NSTD_END \ + _Pragma("GCC diagnostic pop") \ + /* end */ +#endif + +#define FMT_NSTD(expr) \ + ({ \ + typeof(expr) _v; \ + FMT_NSTD_BEGIN \ + _v = expr; \ + FMT_NSTD_END \ + _v; \ + }) \ + /* end */ + #ifdef __cplusplus } #endif |