https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97665
Jiang An <de34 at live dot cn> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |de34 at live dot cn --- Comment #11 from Jiang An <de34 at live dot cn> --- This looks like CWG issue 2558 (currently unresolved). https://cplusplus.github.io/CWG/issues/2558.html