https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105398
--- Comment #7 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The trunk branch has been updated by Marek Polacek <mpola...@gcc.gnu.org>: https://gcc.gnu.org/g:409edcca331296b53842c50d3b789e1b1ccc05e5 commit r12-8290-g409edcca331296b53842c50d3b789e1b1ccc05e5 Author: Marek Polacek <pola...@redhat.com> Date: Tue Apr 26 16:12:58 2022 -0400 c++: enum in generic lambda at global scope [PR105398] We crash compiling this test since r11-7993 which changed lookup_template_class_1 so that we only call tsubst_enum when !uses_template_parms (current_nonlambda_scope ()) But here current_nonlambda_scope () is the global NAMESPACE_DECL ::, which doesn't have a type, therefore is considered type-dependent. So we don't call tsubst_enum, and crash in tsubst_copy/CONST_DECL because we didn't find the e1 enumerator. I don't think any namespace can depend on any template parameter, so this patch tweaks uses_template_parms. PR c++/105398 gcc/cp/ChangeLog: * pt.cc (uses_template_parms): Return false for any NAMESPACE_DECL. gcc/testsuite/ChangeLog: * g++.dg/cpp1y/lambda-generic-enum2.C: New test.
