https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103831
--- Comment #3 from CVS 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:0378f563b0321c44c4a9c98cf46d2a22b9160f76 commit r12-6485-g0378f563b0321c44c4a9c98cf46d2a22b9160f76 Author: Patrick Palka <ppa...@redhat.com> Date: Tue Jan 11 13:00:48 2022 -0500 c++: dependent bases and 'this' availability [PR103831] Here during satisfaction of B's constraints we're failing to reject the object-less call to the non-static member function A::size ultimately because satisfaction is performed in the (access) context of the class template B, which has a dependent base, and so the any_dependent_bases_p check within build_new_method_call causes us to not reject the call. (Subsequent constexpr evaluation of the call succeeds since the function is effectively static.) This patch fixes this by refining the any_dependent_bases_p check within build_new_method_call: if we're in a context where 'this' is unavailable, then we cannot resolve the implicit object regardless of the presence of a dependent base. So let's also check current_class_ptr alongside a_d_b_p. PR c++/103831 gcc/cp/ChangeLog: * call.c (build_new_method_call): Consider dependent bases only if 'this' is available. gcc/testsuite/ChangeLog: * g++.dg/cpp2a/concepts-class3.C: New test. * g++.dg/template/non-dependent18.C: New test.
