https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110670
Bug ID: 110670 Summary: tree-vect-stmts.cc:9733:11: warning: variable 'offvar' is sometimes initialised Product: gcc Version: unknown Status: UNCONFIRMED Severity: normal Priority: P3 Component: c Assignee: unassigned at gcc dot gnu.org Reporter: dcb314 at hotmail dot com Target Milestone: --- >From today's build of gcc trunk, clang says: tree-vect-stmts.cc:9733:11: warning: variable 'offvar' is used uninitialized whenever 'if' condition is false [-Wsometimes-uninitialized] $ grep -n offvar ../trunk.year/gcc/tree-vect-stmts.cc 8377: tree offvar; 8495: &offvar, NULL); 8504: running_off = offvar; 9692: tree offvar; 9767: &offvar, NULL); 9772: running_off = offvar; $ It might be worthwhile initialising offvar to something sensible for both its declarations.