https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115012
--- Comment #3 from GCC Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Jakub Jelinek <ja...@gcc.gnu.org>: https://gcc.gnu.org/g:48c3e5a4f935d6b8cd9ef7c51995e3b29ceb8be7 commit r15-1000-g48c3e5a4f935d6b8cd9ef7c51995e3b29ceb8be7 Author: Jakub Jelinek <ja...@redhat.com> Date: Mon Jun 3 23:07:08 2024 +0200 c++: Fix parsing of abstract-declarator starting with ... followed by opening paren [PR115012] The C++26 P2662R3 Pack indexing paper mentions that both GCC and MSVC don't handle T...[10] parameter declaration when T is a pack. And apparently neither T...(args). While the former will change meaning in C++26, T...(args) is still valid even in C++26. The following patch handles just the T...(args) case in cp_parser_direct_declarator. 2024-06-03 Jakub Jelinek <ja...@redhat.com> PR c++/115012 * parser.cc (cp_parser_direct_declarator): Handle abstract declarator starting with ... followed by opening paren. * g++.dg/cpp0x/variadic185.C: New test.