On 2016-02-07, at 1:29 PM, John David Anglin wrote: > On 2016-02-07, at 12:00 PM, John David Anglin wrote: > >> We really need a testcase to isolate the problematic gcc change. > > I've extracted preprocessed source from libavutil/crc.c. The crc-test has no > dependencies on > any ffmpeg libraries, so it's a good test to use to find gcc problem. > > Program seems to compile okay with gcc-4.9.
Program compiles okay with my latest build of gcc-6 but gcc-5_5.3.1-8 fails as expected. Gcc-5 was bootstrapped using itself. Suspect it was mis-compiled in stage1 leading to current bug. This type of bug can be hard to find. Maybe problem will go away if gcc-5 is bootstrapped with gcc-4.9. Dave -- John David Anglin dave.ang...@bell.net
