https://gcc.gnu.org/bugzilla/show_bug.cgi?id=127151
Sam James <sjames at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |DUPLICATE
--- Comment #1 from Sam James <sjames at gcc dot gnu.org> ---
Indeed known, thanks for reporting & testing trunk though.
You can use --disable-werror as a workaround to configure for now.
*** This bug has been marked as a duplicate of bug 126952 ***