[FFmpeg-trac] #1932(undetermined:closed): Error in <dering_MMX2> when configured with --disable-optimizations --disable-mmx on x86-32 (was: Error in <dering_MMX2> when configured with --disable-optimizations --disable-mmx)

FFmpeg trac at avcodec.org
Thu Nov 22 20:03:50 CET 2012

#1932: Error in <dering_MMX2> when configured with --disable-optimizations
--disable-mmx on x86-32
             Reporter:  Morion       |                    Owner:
                 Type:  defect       |                   Status:  closed
             Priority:  important    |                Component:
              Version:  unspecified  |  undetermined
             Keywords:               |               Resolution:  invalid
             Blocking:               |               Blocked By:
Analyzed by developer:  0            |  Reproduced by developer:  0
Changes (by michael):

 * status:  new => closed
 * resolution:   => invalid


 --disable-optimization without --disable-asm is not possible on x86-32.
 gcc is too buggy for this. On 64bit, gcc has twice as many registers so it
 should work.

 You can thus either enable optimizations, disable asm or compile for
 x86-64 if your platform supports it
 You can also use --disable-mmx --disable-runtume-cpudetect instead if you

 Iam closing this as invalid as its a gcc bug not a ffmpeg bug. But iam not
 opposed to consider some workaround if theres some volunteer who wants to
 maintain such workarounds.

Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/1932#comment:3>
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