http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51782
--- Comment #24 from Martin Jambor <jamborm at gcc dot gnu.org> 2012-02-21 10:37:40 UTC --- Unfortunately, with the patch I got following new LTO link failures on x86_64-linux: gcc.dg/lto/trans-mem-1 c_lto_trans-mem-1_0.o-c_lto_trans-mem-1_1.o link, -flto -fgnu-tm gcc.dg/lto/trans-mem-2 c_lto_trans-mem-2_0.o-c_lto_trans-mem-2_1.o link, -flto -fgnu-tm gcc.dg/lto/trans-mem-4 c_lto_trans-mem-4_0.o-c_lto_trans-mem-4_1.o link, -flto -fgnu-tm I'll have a look a that, even though they look rather scary.