https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103945
--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> --- Confirmed. This seems to be new in Clang 13 (and enabled by default, even without -Wall). Clang 12 doesn't warn.
redi at gcc dot gnu.org via Gcc-bugs Fri, 07 Jan 2022 10:18:53 -0800
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103945
--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> --- Confirmed. This seems to be new in Clang 13 (and enabled by default, even without -Wall). Clang 12 doesn't warn.