https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115897
--- Comment #4 from GCC Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Patrick Palka <ppa...@gcc.gnu.org>: https://gcc.gnu.org/g:7954bb4fcb6fa80f6bb840133314885011821188 commit r15-2047-g7954bb4fcb6fa80f6bb840133314885011821188 Author: Patrick Palka <ppa...@redhat.com> Date: Mon Jul 15 18:07:55 2024 -0400 c++: alias template with dependent attributes [PR115897] Here we're prematurely stripping the dependent alias template-id A<T> to its defining-type-id T when used as a template argument, which in turn causes us to essentially ignore A's vector_size attribute in the outer template-id. This has always been a problem for class template-ids it seems, and after r14-2170 variable template-ids are affected as well. This patch marks alias templates that have a dependent attribute as complex (as with e.g. constrained alias templates) so that we don't look through them prematurely. PR c++/115897 gcc/cp/ChangeLog: * pt.cc (complex_alias_template_p): Return true for an alias template with attributes. (get_underlying_template): Don't look through an alias template with attributes. gcc/testsuite/ChangeLog: * g++.dg/cpp0x/alias-decl-77.C: New test. Reviewed-by: Jason Merrill <ja...@redhat.com>
