https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81218
--- Comment #2 from Matthew Whitehead <tedheadster at gmail dot com> ---
Here is a better backtrace with more symbols added:
#0 0xb750a142 in __get_cpuid (__edx=0xbf9be478, __ecx=0xbf9be474,
__ebx=0xbf9be470, __eax=0xbf9be46c, __level=0)
at
/var/tmp/portage/sys-devel/gcc-5.4.0-r3/work/build/gcc/include/cpuid.h:2\
42
#1 __get_cpuid_output (__level=__level@entry=0, __eax=__eax@entry=0xbf9be46c,
__ebx=__ebx@entry=0xbf9be470, __ecx=0xbf9be474, __edx=0xbf9be478)
at
/var/tmp/portage/sys-devel/gcc-5.4.0-r3/work/gcc-5.4.0/libgcc/config/i38\
6/cpuinfo.c:337
#2 0xb750a1ba in __cpu_indicator_init ()
at
/var/tmp/portage/sys-devel/gcc-5.4.0-r3/work/gcc-5.4.0/libgcc/config/i38\
6/cpuinfo.c:362
#3 0xb778d5b6 in call_init (l=<optimized out>, argc=argc@entry=1,
argv=argv@entry=0xbf9be524, env=0xbf9be52c) at dl-init.c:72
#4 0xb778d6dd in call_init (env=0xbf9be52c, argv=0xbf9be524, argc=1,
l=<optimized out>) at dl-init.c:30
#5 _dl_init (main_map=<optimized out>, argc=1, argv=0xbf9be524,
env=0xbf9be52c) at dl-init.c:120
#6 0xb777d9cf in _dl_start_user () from /lib/ld-linux.so.2
