http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53908
--- Comment #3 from Hans-Peter Nilsson <hp at gcc dot gnu.org> 2012-07-10 17:03:14 UTC --- (In reply to comment #2) > I can't reproduce on x86_64-linux, Odd. What does valgrind say / did you check the generated code? > HP: are you sure it fails on x86_64? Yes, as written. N.B.: I used --disable-bootstrap, but that shouldn't have any significance modulo bugs. Host (native) compiler was the mentioned "Debian 4.4.5-8" x86_64 gcc, but not for all targets and only for pristine FSF code checks. Are you sure you used the gcc 4.7 branch for x86_64? ;) It can't be ruled out of course that there's some address hash thing clouding the issue, but the reproducibility seems stable (same gcc binary on different targets; different host gcc).