https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104867
--- Comment #2 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:35ba3add7d0a9fc6ce955ba8ad82b0413e86ad7d commit r14-6520-g35ba3add7d0a9fc6ce955ba8ad82b0413e86ad7d Author: Patrick Palka <ppa...@redhat.com> Date: Wed Dec 13 15:55:14 2023 -0500 c++: unifying constants vs their type [PR99186, PR104867] When unifying constants we need to treat constants of different types but same value as different in light of auto template parameters since otherwise e.g. A<1> will unify with A<1u> (where A's template-head is template<auto>). This patch fixes this in a minimal way; it seems we could get away with just using template_args_equal here, as we do in the default case, or even just cp_tree_equal since the CONVERT_EXPR_P loop seems to be dead code, but that's a simplification we could consider during next stage 1. PR c++/99186 PR c++/104867 gcc/cp/ChangeLog: * pt.cc (unify) <case INTEGER_CST>: Compare types as well. gcc/testsuite/ChangeLog: * g++.dg/cpp1z/nontype-auto23.C: New test. * g++.dg/cpp1z/nontype-auto24.C: New test.
