[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 #3 from Ian Lance Taylor <ian at airs dot com> ---
Of course it's also possible that there is some bug in libbacktrace.  It's
worth checking what gdb reports.