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Add CHECK/SUINT code

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Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 4614bf2caf)
(cherry picked from commit e8d4eacc07)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 3f2a09a43f6fade53227804459e6babb1c7248b3)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2017-02-20 19:34:54 +01:00
parent 095449d272
commit 067bd9877f
1 changed files with 14 additions and 0 deletions
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14
libavutil/internal.h
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@ -30,6 +30,10 @@
# define NDEBUG
#endif
#if defined(DEBUG) && !defined(CHECKED)
# define CHECKED
#endif
#include <limits.h>
#include <stdint.h>
#include <stddef.h>
@ -257,6 +261,16 @@ void avpriv_request_sample(void *avc,
# define ff_dlog(ctx, ...) do { if (0) av_log(ctx, AV_LOG_DEBUG, __VA_ARGS__); } while (0)
#endif
// For debuging we use signed operations so overflows can be detected (by ubsan)
// For production we use unsigned so there are no undefined operations
#ifdef CHECKED
#define SUINT int
#define SUINT32 int32_t
#else
#define SUINT unsigned
#define SUINT32 uint32_t
#endif
/**
* Clip and convert a double value into the long long amin-amax range.
* This function is needed because conversion of floating point to integers when