[FFmpeg-devel] [PATCH] define _DARWIN_C_SOURCE for MAP_ANON

[Ramiro Polla]

swscale-test crashes on macosx/64-bit because MAP_ANON is under
(!_POSIX_C_SOURCE || _DARWIN_C_SOURCE), which makes swscale use plain
old malloc() to allocate memory for the mmx2 scaler, which ends up
crashing (it doesn't crash on 32-bit though).

Attached patch adds the define for darwin.
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