https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101428
--- Comment #3 from Arseny Solokha <asolokha at gmx dot com> --- (In reply to Richard Biener from comment #2) > Was this ever working or why is this > marked as regression? gcc 9 and earlier accept the code w/o any diagnostic, and AFAICT the snippet you quoted had been changed last time in r223025.