generic-library/ffmpeg
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

avcodec/pngdsp: fix (un)signed type in end comparission

Browse Source 
Fixes out of array accesses
Fixes Ticket2919

Found_by: ami_stuff
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
(cherry picked from commit 86736f59d6a527d8bc807d09b93f971c0fe0bb07)
This commit is contained in:
Michael Niedermayer 2013-08-30 23:14:32 +02:00 committed by Carl Eugen Hoyos
parent 6fd54e4f2e
commit 2d945ac68f
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
libavcodec/pngdsp.c
View File

@ -30,7 +30,7 @@
static void add_bytes_l2_c(uint8_t *dst, uint8_t *src1, uint8_t *src2, int w)
{
long i;
for (i = 0; i <= w - sizeof(long); i += sizeof(long)) {
for (i = 0; i <= w - (int)sizeof(long); i += sizeof(long)) {
long a = *(long *)(src1 + i);
long b = *(long *)(src2 + i);
*(long *)(dst + i) = ((a & pb_7f) + (b & pb_7f)) ^ ((a ^ b) & pb_80);