http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53030
Bug #: 53030 Summary: [4.8 Regression] LTO bootstrap failed with bootstrap-profiled Classification: Unclassified Product: gcc Version: 4.8.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: bootstrap AssignedTo: unassig...@gcc.gnu.org ReportedBy: hjl.to...@gmail.com On Linux/x86-64, revision 186564 LTO bootstrap failed with bootstrap-profiled: ../../src-trunk/gcc/config/i386/i386.c: In function 'void ix86_option_override_internal(bool)': ../../src-trunk/gcc/config/i386/i386.c:3962:31: error: 'mask' may be used uninitialized in this function [-Werror=maybe-uninitialized] recip_mask_explicit |= mask; ^ Revision 186559 is OK.