http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56804
--- Comment #8 from Vincent <vchou79 at gmail dot com> 2013-04-03 10:55:02 UTC --- (In reply to comment #7) > (In reply to comment #6) > > bash-4.1$ cat test.res > > 3 > > test.o 4 > > 459 b27d8a298c16d07e PREVAILING_DEF_IRONLY_EXP check_vpx_codec_dec_init_ver > > 475 b27d8a298c16d07e PREVAILING_DEF_IRONLY_EXP main > > 463 b27d8a298c16d07e RESOLVED_IR vpx_codec_dec_init_ver > > 478 b27d8a298c16d07e RESOLVED_IR vpx_codec_control_ > > ./libvpx.a@0x5b54 10 > > Thus libvpx.a contains objects with LTO bytecode. Please make sure > to re-build those as well. > Those are rebuilt, tested more 3 times, but issue persists, the changes to back-end @r196864 caused it. The preprocessed sources alone isn't adequate to trigger this bug. libvpx.a is required, do you need this archive ?