[Bug go/64999] s390x libgo test failure in TestMemoryProfiler

[ian at airs dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64999

--- Comment #25 from Ian Lance Taylor <ian at airs dot com> ---
To which code in libgcc are you referring?  I don't see it.

Our goal has to be for runtime.Callers to return the same sort of values in
gccgo as it does in gc.  That means that your change to
go/runtime/pprof/pprof.go looks wrong to me.  It suggests that the ppc64 values
are different from those of other architectures.  What's the justification for
that?