http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53477
--- Comment #19 from Jonathan Wakely <redi at gcc dot gnu.org> --- (In reply to JiYouguo from comment #18) > Would you mind telling how to patch a bug? I just can't find the file > simple.cc. simple.cc is a test file, patching that won't fix anything. The patch you want is probably comment 11