[FFmpeg-trac] #5231(avcodec:reopened): Crashes in ff_deblock_v_luma_8_sse2

FFmpeg trac at avcodec.org
Thu Oct 6 10:32:32 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            |

Comment (by cehoyos):

 Please test two things separately:
 First please test unpatched FFmpeg, run configure and then change the line
 in config.h containing `HAVE_ALIGNED_STACK` into:
 Then please test if this patch alone (without any other changes and
 without changes to config.h) fixes the issue you see:
 diff --git a/configure b/configure
 index ee7e852..e014615 100755
 --- a/configure
 +++ b/configure
 @@ -6202,6 +6202,7 @@ elif enabled llvm_gcc; then
      check_cflags -mllvm -stack-alignment=16
  elif enabled clang; then
      check_cflags -mllvm -stack-alignment=16
 +    check_cflags -mstack-alignment=16
      check_cflags -Qunused-arguments
      check_cflags -Werror=implicit-function-declaration
      check_cflags -Werror=missing-prototypes

Ticket URL: <https://trac.ffmpeg.org/ticket/5231#comment:21>
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