libavcodec/ppc · 1c3533367188ea25bace9dedd6ee63fb1112b14d · Stefan Westerfeld / ffmpeg

avcodec/ppc/hpeldsp_altivec: Fix left-shift of negative number · 356610a2

Andreas Rheinhardt authored Mar 29, 2024

It is UB and affected e.g. the vp5 and vp61 FATE tests:
https://fate.ffmpeg.org/report.cgi?time=20240327083327&slot=ppc-linux-gcc-13.2-ubsan-altivec-qemuSigned-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>

356610a2

Name	Last commit	Last update
..
Makefile		Loading commit data...
asm.S		Loading commit data...
audiodsp.c		Loading commit data...
blockdsp.c		Loading commit data...
fdct.h		Loading commit data...
fdctdsp.c		Loading commit data...
fmtconvert_altivec.c		Loading commit data...
h264chroma_init.c		Loading commit data...
h264chroma_template.c		Loading commit data...
h264dsp.c		Loading commit data...
h264qpel.c		Loading commit data...
h264qpel_template.c		Loading commit data...
hevcdsp.c		Loading commit data...
hevcdsp_template.c		Loading commit data...
hpeldsp_altivec.c		Loading commit data...
hpeldsp_altivec.h		Loading commit data...
idctdsp.c		Loading commit data...
lossless_audiodsp_altivec.c		Loading commit data...
lossless_videodsp_altivec.c		Loading commit data...
mathops.h		Loading commit data...
me_cmp.c		Loading commit data...
mpeg4videodsp.c		Loading commit data...
mpegaudiodsp_altivec.c		Loading commit data...
mpegvideo_altivec.c		Loading commit data...
mpegvideoencdsp.c		Loading commit data...
pixblockdsp.c		Loading commit data...
svq1enc_altivec.c		Loading commit data...
vc1dsp_altivec.c		Loading commit data...
videodsp.c		Loading commit data...
vorbisdsp_altivec.c		Loading commit data...
vp3dsp_altivec.c		Loading commit data...
vp8dsp_altivec.c		Loading commit data...