http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52399
Richard Guenther <rguenth at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |NEW Last reconfirmed| |2012-02-27 Ever Confirmed|0 |1 --- Comment #1 from Richard Guenther <rguenth at gcc dot gnu.org> 2012-02-27 11:16:47 UTC --- Confirmed. This is because Wclobbered is a C family option but the warning is generated by middle-end code. lto1 would simply ignore -Wno-clobbered. -Wall is also a C family option and so ignored by lto1 btw. -Wall would need to be split up in parts for lto option processing.