RepoMirrors/ffmpeg
1
0
Fork 0
mirror of https://git.ffmpeg.org/ffmpeg.git synced 2024-12-13 02:34:54 +00:00
Code Issues Projects Releases Wiki Activity

ffv1: avoid checking a double for equality

Browse Source 
if 0.0 != 0.0 a out of array read would occur, equal checks
with floating point may behave in such odd ways, though
this is very unlikely in a real implementation of a compiler

Fixes: CID718936
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2012-10-13 01:47:31 +02:00
parent d2a618ab22
commit 54b2d317ed
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/ffv1.c
View File

@ -275,7 +275,7 @@ static void find_best_state(uint8_t best_state[256][256], const uint8_t one_stat
occ[j]=1.0; occ[j]=1.0;
for(k=0; k<256; k++){ for(k=0; k<256; k++){
double newocc[256]={0}; double newocc[256]={0};
for(m=0; m<256; m++){ for(m=1; m<256; m++){
if(occ[m]){ if(occ[m]){
len -=occ[m]*( p *l2tab[ m] len -=occ[m]*( p *l2tab[ m]
+ (1-p)*l2tab[256-m]); + (1-p)*l2tab[256-m]);