http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54926
--- Comment #5 from dave.anglin at bell dot net 2012-12-03 16:06:22 UTC --- I have a patch to ignore the comparison failure and a couple changes to libbacktrace for hpux. The btest program now runs successfully on hpux. However, backtrace still doesn't work from within compiler.