http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47558
--- Comment #31 from Jack Howarth <howarth at nitro dot med.uc.edu> 2011-02-02 02:54:50 UTC --- I can confirm that adding -flat_namespace to the linkage of xplor using stock gcc trunk is insufficient to eliminate the crashes in the FSF libgcc unwinder. So we do need both the patch from Comment 24 as well as the additional linkage with -flat_namespace on the xplor executable. I guess we should expand the proposed patch to also handle the case of Zforce_flat_namespace as well.