[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 #6 from Ian Lance Taylor <ian at airs dot com> ---
The odd addresses are most likely a symptom of the libbacktrace library.  It
should probably be considered a bug.  I'm guessing that it's because of the
--pc in the static function unwind in libbacktrace/backtrace.c.