https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115906
--- Comment #4 from GCC Commits <cvs-commit at gcc dot gnu.org> --- The releases/gcc-14 branch has been updated by Iain D Sandoe <ia...@gcc.gnu.org>: https://gcc.gnu.org/g:7b4cb031cf7de0ac350197e4ae869df9fe1d08a1 commit r14-11718-g7b4cb031cf7de0ac350197e4ae869df9fe1d08a1 Author: Arsen ArsenoviÄ <ar...@aarsen.me> Date: Thu Jul 25 01:00:02 2024 +0200 c++: diagnose usage of co_await and co_yield in default args [PR115906] This is a partial fix for PR115906. Per [expr.await] 2s3, "An await-expression shall not appear in a default argument ([dcl.fct.default])". This patch introduces the diagnostic in that case, and in the case of a co_yield (as co_yield is defined in terms of co_await, so prerequisites of co_await hold). PR c++/115906 - [coroutines] missing diagnostic and ICE when co_await used as default argument in function declaration gcc/cp/ChangeLog: PR c++/115906 * parser.cc (cp_parser_unary_expression): Reject await expressions if use of local variables is currently forbidden. (cp_parser_yield_expression): Reject yield expressions if use of local variables is currently forbidden. gcc/testsuite/ChangeLog: PR c++/115906 * g++.dg/coroutines/pr115906-yield.C: New test. * g++.dg/coroutines/pr115906.C: New test. * g++.dg/coroutines/co-await-syntax-02-outside-fn.C: Don't rely on default arguments. * g++.dg/coroutines/co-yield-syntax-01-outside-fn.C: Ditto. (cherry picked from commit 0c382da0943dc7d14455ba2ada2f620a25bd1366)
