New submission from sera <ser...@bluewin.ch>: ffmpeg git-cf9af0c, default configuration
As of -O2 gcc use the aliasing rules to optimize. Almost everyone is using -O2. So this may lead to random runtime behavior on a lot of machines. Here a list of gcc complaints: * libavcodec/dsputil.c:3681: warning: dereferencing type-punned pointer will break strict-aliasing rules * libavcodec/dsputil.c:3746: warning: dereferencing type-punned pointer will break strict-aliasing rules * libavcodec/dsputil.c:3763: warning: dereferencing type-punned pointer will break strict-aliasing rules * libavcodec/dsputil.c:3764: warning: dereferencing type-punned pointer will break strict-aliasing rules * libavcodec/dsputil.c:3789: warning: dereferencing type-punned pointer will break strict-aliasing rules * libavcodec/dsputil.c:3867: warning: dereferencing type-punned pointer will break strict-aliasing rules * libavcodec/eatgq.c:229: warning: dereferencing type-punned pointer will break strict-aliasing rules * libavcodec/h264.c:6215: warning: dereferencing type-punned pointer will break strict-aliasing rules * libavcodec/svq3.c:869: warning: dereferencing type-punned pointer will break strict-aliasing rules * libavcodec/x86/fdct_mmx.c:539: warning: dereferencing type-punned pointer will break strict-aliasing rules * libavcodec/x86/fdct_mmx.c:557: warning: dereferencing type-punned pointer will break strict-aliasing rules * libavcodec/x86/fdct_mmx.c:575: warning: dereferencing type-punned pointer will break strict-aliasing rules * libavcodec/x86/simple_idct_mmx.c:214: warning: dereferencing type-punned pointer will break strict-aliasing rules And two other security related gcc complaints: * libavformat/mxfenc.c:1409: warning: implicit declaration of function 'ff_interleave_add_packet' * libavformat/oggenc.c:225: warning: implicit declaration of function 'ff_interleave_add_packet' ---------- messages: 4178 priority: normal status: new substatus: new title: type-punned pointers type: bug ____________________________________________________ FFmpeg issue tracker <ffmpeg_iss...@live.polito.it> <https://roundup.ffmpeg.org/roundup/ffmpeg/issue823> ____________________________________________________
