http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50569
--- Comment #3 from Paul Koning <pkoning at gcc dot gnu.org> 2011-09-29 19:52:47 UTC --- Created attachment 25383 --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=25383 Test case with main() Here is an updated testcase. This one runs to completion with 4.5.1, aborts with a bus error exception on 4.6.1. I compiled with -mabi=n32 -O1, but as far as I can tell from inspecting the generated code, the choice of ABI is not a factor.