From 2015c109ac93a104c9ee4d9ce7ba3ef39b76d935 Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Mon, 20 Feb 2017 19:34:54 +0100 Subject: [PATCH] Add CHECK/SUINT code Signed-off-by: Michael Niedermayer (cherry picked from commit 4614bf2caf67a89c2d833b3368f325eab54582bc) (cherry picked from commit e8d4eacc07c61ae24f48451073a2620d8d257d33) Signed-off-by: Michael Niedermayer (cherry picked from commit 3f2a09a43f6fade53227804459e6babb1c7248b3) Signed-off-by: Michael Niedermayer --- libavutil/internal.h | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/libavutil/internal.h b/libavutil/internal.h index 61784b5128..cc2d97dc52 100644 --- a/libavutil/internal.h +++ b/libavutil/internal.h @@ -30,6 +30,10 @@ # define NDEBUG #endif +#if defined(DEBUG) && !defined(CHECKED) +# define CHECKED +#endif + #include #include #include @@ -258,6 +262,16 @@ 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