Request for -Wundefined for cases where GCC optimizers can detect undefined behaviour and actively take advantages of them for code generation purpose.
-- Summary: Request for -Wundefined Product: gcc Version: 4.3.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: tree-optimization AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: gdr at gcc dot gnu dot org GCC host triplet: platform independent http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30334