http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52839
--- Comment #7 from Alan Modra <amodra at gmail dot com> 2012-04-04 09:57:51 UTC --- I also see the same 64-bit failure on r186130. A lot harder to reproduce than the 32-bit one I originally reported (which is still there on r186130). Likely not a problem with .eh_frame info since the fail only happens rarely.