http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53823
--- Comment #10 from John David Anglin <danglin at gcc dot gnu.org> 2012-07-31 19:41:20 UTC --- Created attachment 27913 --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=27913 Testcase Testcase produces wrong output when compiled at -O0 and -O1.