id	summary	reporter	owner	description	type	status	priority	component	version	resolution	keywords	cc	blockedby	blocking	reproduced	analyzed
1736	ffmpeg fails to build on Snow Leopard due to please_use_av_malloc macro polluting system headers	jeremyhu		"This issue is occuring on Snow Leopard with Apple's gcc-4.2 and possibly llvm-gcc-4.2 compilers.  The build fails with:
{{{
132	:info:build In file included from /usr/lib/gcc/i686-apple-darwin10/4.2.1/include/xmmintrin.h:45,
133	:info:build                  from /System/Library/Frameworks/CoreServices.framework/Frameworks/CarbonCore.framework/Headers/MachineExceptions.h:29,
134	:info:build                  from /System/Library/Frameworks/CoreServices.framework/Frameworks/CarbonCore.framework/Headers/DriverServices.h:32,
135	:info:build                  from /System/Library/Frameworks/CoreServices.framework/Frameworks/CarbonCore.framework/Headers/CarbonCore.h:125,
136	:info:build                  from /System/Library/Frameworks/CoreServices.framework/Frameworks/AE.framework/Headers/AE.h:20,
137	:info:build                  from /System/Library/Frameworks/CoreServices.framework/Headers/CoreServices.h:21,
138	:info:build                  from /System/Library/Frameworks/ApplicationServices.framework/Headers/ApplicationServices.h:20,
139	:info:build                  from /System/Library/Frameworks/CoreVideo.framework/Headers/CVDisplayLink.h:24,
140	:info:build                  from /System/Library/Frameworks/CoreVideo.framework/Headers/CoreVideo.h:24,
141	:info:build                  from /System/Library/Frameworks/VideoDecodeAcceleration.framework/Headers/VDADecoder.h:12,
142	:info:build                  from libavcodec/vda.h:45,
143	:info:build                  from libavcodec/vda_h264.c:29:
144	:info:build /usr/lib/gcc/i686-apple-darwin10/4.2.1/include/mm_malloc.h: In function '_mm_malloc':
145	:info:build /usr/lib/gcc/i686-apple-darwin10/4.2.1/include/mm_malloc.h:56: error: implicit declaration of function 'please_use_av_malloc'
146	:info:build /usr/lib/gcc/i686-apple-darwin10/4.2.1/include/mm_malloc.h: In function '_mm_free':
147	:info:build /usr/lib/gcc/i686-apple-darwin10/4.2.1/include/mm_malloc.h:74: error: implicit declaration of function 'please_use_av_free'
}}}

mm_malloc.h provides static inline functions like:
{{{
static __inline__ void
_mm_free (void * aligned_ptr)
{
  if (aligned_ptr)
    free (((void **) aligned_ptr) [-1]);
}
}}}

which get tripped up over free being defined to please_use_av_free.

This has been reported to MacPorts as https://trac.macports.org/ticket/36142 ... the issue was introduced some time between July 18's git master (56ae5926f739bd26a5aa4add98604b7cd3c2d6ca) and September 12 (2de88776892093b10522152f1f72b7dfc0320502)."	defect	closed	important	avcodec	git-master	fixed	osx regression vda				0	0