https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64999
--- Comment #41 from Ian Lance Taylor <ian at airs dot com> --- I really don't want libbacktrace to be processor-dependent. That makes all uses of it more complex for no significant gain. Maybe we should change libbacktrace, but definitely not by making it processor-dependent. I would prefer that changes to files like runtime/pprof/pprof.go and log/log.go go through the master repo first. If gccgo's runtime.Callers acts the same as gc's runtime.Callers, then there shouldn't be any gccgo-specific need to change those files. Can somebody please try just editing the function callback in runtime/go-callers.c to add one to pc when storing it in loc->pc? I'd like to understand why that simple change doesn't work before trying something more complex.