https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96132
--- Comment #2 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:614662064ad4993a2aaecf190e7399ac5279e78e commit r11-1971-g614662064ad4993a2aaecf190e7399ac5279e78e Author: Patrick Palka <ppa...@redhat.com> Date: Thu Jul 9 13:47:13 2020 -0400 c++: Partially revert fix for PR c++/95497 [PR96132] I was mistaken to assume that a dependent type is necessarily incomplete, and indeed there are multiple places in the frontend where we check a type for both dependency and completeness. So this patch partially reverts the fix for PR95497, restoring the dependent_type_p check that guarded the call to is_really_empty_class below. gcc/cp/ChangeLog: PR c++/96132 * constexpr.c (potential_constant_expression_1) <case PARM_DECL>: Restore dependent_type_p check that guarded the call to is_really_empty_class. gcc/testsuite/ChangeLog: PR c++/96132 * g++.dg/template/incomplete12.C: New test.
