https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106890
--- Comment #2 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The trunk branch has been updated by Jason Merrill <ja...@gcc.gnu.org>: https://gcc.gnu.org/g:041a164ec9b467f9ac2f15980f83f17e3f8ea150 commit r13-6788-g041a164ec9b467f9ac2f15980f83f17e3f8ea150 Author: Jason Merrill <ja...@redhat.com> Date: Sat Mar 18 08:27:26 2023 -0400 c++: DMI in template with virtual base [PR106890] When parsing a default member init we just build a CONVERT_EXPR for converting to a virtual base, and then expand that into the more complex form when we actually use the DMI in a constructor. But that wasn't working for the template case where we are considering the conversion at the point that the constructor needs the DMI instantiation, so it seemed like we were in a constructor already. And then when the other constructor tries to reuse the instantiation, it sees uses of the first constructor's parameters, and dies. So ensure that we get the CONVERT_EXPR in this case, too. PR c++/106890 gcc/cp/ChangeLog: * init.cc (maybe_instantiate_nsdmi_init): Don't leave current_function_decl set to a constructor. gcc/testsuite/ChangeLog: * g++.dg/cpp0x/nsdmi-template25.C: New test.
