https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89579
Bug ID: 89579 Summary: -Wclobbered warning false positive when compiling with -Og Product: gcc Version: 9.0 Status: UNCONFIRMED Keywords: diagnostic, rejects-valid Severity: normal Priority: P3 Component: c++ Assignee: unassigned at gcc dot gnu.org Reporter: abigail.buccaneer at gmail dot com Target Milestone: --- Created attachment 45884 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45884&action=edit Minimal reproduction When compiling with `-Wclobbered -Og`, we see false positives from the -Wclobbered warning. These don't occur with any other optimization level. This breaks our build under `-Wextra -Werror -Og`. Attached is a minimal reproduction test case. This bug is present from GCC 5.5.0 to GCC trunk (9.0.1 20190303). GCC 5.4.0 and below are not affected.