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| author | Michael Niedermayer <michaelni@gmx.at> | 2013-10-26 22:08:06 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2013-10-26 22:08:06 +0200 |
| commit | f3d0642d35faf43ce027607bb117142b347ee1a4 (patch) | |
| tree | 45e7ebcd6b1bd36ba48314b646589fd7e6b59b71 | |
| parent | c78a4169855861a8ac36192f15c456a357a526d6 (diff) | |
| download | ffmpeg-f3d0642d35faf43ce027607bb117142b347ee1a4.tar.gz | |
avutil/utils: check that size_t is unsigned
ANSI/ISO C guarantee this, yet there is evidence that there exist
platforms where its not so.
See: http://www.cs.utah.edu/dept/old/texinfo/glibc-manual-0.02/library_30.html
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
| -rw-r--r-- | libavutil/utils.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/libavutil/utils.c b/libavutil/utils.c index eb87c906c8..dc841621d0 100644 --- a/libavutil/utils.c +++ b/libavutil/utils.c @@ -40,6 +40,8 @@ unsigned avutil_version(void) av_assert0(LIBAVUTIL_VERSION_MICRO >= 100); av_assert0(HAVE_MMX2 == HAVE_MMXEXT); + av_assert0(((size_t)-1) > 0); // C gurantees this but if false on a platform we care about revert at least b284e1ffe343d6697fb950d1ee517bafda8a9844 + if (av_sat_dadd32(1, 2) != 5) { av_log(NULL, AV_LOG_FATAL, "Libavutil has been build with a broken binutils, please upgrade binutils and rebuild\n"); abort(); |