[FFmpeg-trac] #5231(avcodec:reopened): Crashes in ff_deblock_v_luma_8_sse2
FFmpeg
trac at avcodec.org
Thu Oct 6 04:36:50 EEST 2016
#5231: Crashes in ff_deblock_v_luma_8_sse2
-------------------------------------+-------------------------------------
Reporter: mi | Owner:
Type: defect | Status: reopened
Priority: important | Component: avcodec
Version: unspecified | Resolution:
Keywords: h264 crash | Blocked By:
SIGSEGV | Reproduced by developer: 0
Blocking: |
Analyzed by developer: 0 |
-------------------------------------+-------------------------------------
Changes (by mi):
* status: closed => reopened
* resolution: needs_more_info =>
Comment:
> -mstackrealign
Yes, after [patching the configure-
script|https://lists.freebsd.org/pipermail/freebsd-
ports/2016-September/104946.html] thus the problem goes away:
{{{
--- configure 2015-06-19 20:47:55 UTC
+++ configure
@@ -5682,7 +5677,11 @@ elif enabled gcc; then
elif enabled llvm_gcc; then
check_cflags -mllvm -stack-alignment=16
elif enabled clang; then
- check_cflags -mllvm -stack-alignment=16
+ if enabled x86_32; then
+ check_cflags -mllvm -stack-alignment=16
+ check_cflags -mstack-alignment=16
+ check_cflags -mstackrealign
+ fi
check_cflags -Qunused-arguments
check_cflags -Werror=implicit-function-declaration
check_cflags -Werror=missing-prototypes
}}}
Not sure, what the ''cost'' of these flags is -- is the entire package
being pessimized instead of fixing one or two troublesome function(s)?
--
Ticket URL: <https://trac.ffmpeg.org/ticket/5231#comment:18>
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