http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49116
Summary: GCC fails to bootstrap with -O3 ("may be used uninitialized" errors) Product: gcc Version: 4.7.0 Status: UNCONFIRMED Severity: trivial Priority: P3 Component: other AssignedTo: unassig...@gcc.gnu.org ReportedBy: d.g.gorbac...@gmail.com ../../gcc-4.7/gcc/ipa-inline-analysis.c: In function 'inline_read_summary': ../../gcc-4.7/gcc/ipa-inline-analysis.c:2307:5: error: 'out.clause[8]' may be used uninitialized in this function [-Werror=maybe-uninitialized] ../../gcc-4.7/gcc/ipa-inline-analysis.c:2282:20: note: 'out.clause[8]' was declared here ... and so on. It helps to iniatialize struct predicate out in read_predicate().