mathops.h:125: Error: operand type mismatch for `shr'

[jose1711]

On ArchLinux x86_64 with ffmpeg4.4 installed I am getting

$ make
..
..
./libavutil/mem.h:174:1: warning: ‘alloc_size’ attribute ignored on a function returning ‘int’ [-Wattributes]
  174 | av_alloc_size(2, 3) int av_reallocp_array(void *ptr, size_t nmemb, size_t size);
      | ^~~~~~~~~~~~~
CC	libavformat/adtsenc.o
In file included from ./libavutil/common.h:373,
                 from ./libavcodec/get_bits.h:31,
                 from libavformat/adtsenc.c:23:
./libavutil/mem.h:174:1: warning: ‘alloc_size’ attribute ignored on a function returning ‘int’ [-Wattributes]
  174 | av_alloc_size(2, 3) int av_reallocp_array(void *ptr, size_t nmemb, size_t size);
      | ^~~~~~~~~~~~~
./libavcodec/x86/mathops.h: Assembler messages:
./libavcodec/x86/mathops.h:125: Error: operand type mismatch for `shr'
./libavcodec/x86/mathops.h:125: Error: operand type mismatch for `shr'
./libavcodec/x86/mathops.h:125: Error: operand type mismatch for `shr'
make: *** [Makefile:48: libavformat/adtsenc.o] Error 1

[gouchi]

Hi,

Can you try this patch if it fixes the compilation issue ?

Thank you.

Source

[jose1711]

Thank you, that indeed made the package compile. Will update the PKGBUILD shortly. Thanks for the hint!

[anyback]

same error when compiling from source on gentoo.

[hamster4430]

I followed the guide step by step and got the same issue on Manjaro. Then found untrunc in AUR via stock software manager pamac and it compiled successfully.

[davidebeatrici]

@gouchi I confirm the patch fixes compilation on Debian.

[sixtyfive]

Also works on Arch.