virtualenv/FFmpeg
1
0
Fork 0
mirror of https://github.com/FFmpeg/FFmpeg.git synced 2025-08-15 14:13:16 +02:00
Code Issues Releases Activity

lavu: prevent overflow in av_clip_intp2_c

Browse Source 
This fixes ubsan runtime error: signed integer overflow: 8388608 +
2140274688 cannot be represented in type 'int'

Reviewed-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>
This commit is contained in:
Andreas Cadhalpun
2016-01-14 01:15:22 +01:00
parent 2e4fd16f5b
commit f8bc0137bd
1 changed files with 1 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
libavutil/common.h
View File

@@ -211,7 +211,7 @@ static av_always_inline av_const int32_t av_clipl_int32_c(int64_t a)
*/ */
static av_always_inline av_const int av_clip_intp2_c(int a, int p) static av_always_inline av_const int av_clip_intp2_c(int a, int p)
{ {
if ((a + (1 << p)) & ~((2 << p) - 1)) if (((unsigned)a + (1 << p)) & ~((2 << p) - 1))
return (a >> 31) ^ ((1 << p) - 1); return (a >> 31) ^ ((1 << p) - 1);
else else
return a; return a;