https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108245
Andrew Pinski <pinskia at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Ever confirmed|0 |1 Status|UNCONFIRMED |NEW Keywords| |ice-on-invalid-code Last reconfirmed| |2022-12-28 Known to fail| |10.4.0, 11.3.0, 4.9.0, | |5.1.0, 6.1.0, 7.1.0, 8.1.0, | |9.5.0 --- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> --- Confirmed. For my reduced testcase, clang reports an error message: <source>:3:16: error: cannot combine with previous 'type-name' declaration specifier [=](mytype auto... I) { }; ^ <source>:3:20: error: type 'mytype' (aka 'int') of function parameter pack does not contain any unexpanded parameter packs [=](mytype auto... I) { }; ~~~~~~~~~~~^~~~~ <source>:3:5: warning: expression result unused [-Wunused-value] [=](mytype auto... I) { }; ^~~~~~~~~~~~~~~~~~~~~~~~~