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| author | Michael Niedermayer <michaelni@gmx.at> | 2014-04-25 00:55:00 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2014-04-25 00:55:40 +0200 |
| commit | 06e664366a66a373358aacacde8e86348d55bd22 (patch) | |
| tree | 420f5a64cc848964341ab5e9358634d9c5ef3e29 /libavutil/internal.h | |
| parent | 5ac10d40fb9b65e476d1d591a892e0ff51cda6d5 (diff) | |
| parent | a88e1d1c598e641eecd5d43730211d91c82787c6 (diff) | |
| download | ffmpeg-06e664366a66a373358aacacde8e86348d55bd22.tar.gz | |
Merge commit 'a88e1d1c598e641eecd5d43730211d91c82787c6'
* commit 'a88e1d1c598e641eecd5d43730211d91c82787c6':
lavu: add CHK_OFFS as AV_CHECK_OFFSET to check struct member offsets
Merged-by: Michael Niedermayer <michaelni@gmx.at>
Diffstat (limited to 'libavutil/internal.h')
| -rw-r--r-- | libavutil/internal.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/libavutil/internal.h b/libavutil/internal.h index c6c0aa8d38..9a04fa5a2f 100644 --- a/libavutil/internal.h +++ b/libavutil/internal.h @@ -93,6 +93,13 @@ // to be forced to tokenize __VA_ARGS__ #define E1(x) x +/* Check if the hard coded offset of a struct member still matches reality. + * Induce a compilation failure if not. + */ +#define AV_CHECK_OFFSET(s, m, o) struct check_##o { \ + int x_##o[offsetof(s, m) == o? 1: -1]; \ + } + #define LOCAL_ALIGNED_A(a, t, v, s, o, ...) \ uint8_t la_##v[sizeof(t s o) + (a)]; \ t (*v) o = (void *)FFALIGN((uintptr_t)la_##v, a) |