https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95844
--- Comment #2 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Jason Merrill <ja...@gcc.gnu.org>: https://gcc.gnu.org/g:f3ee94724686b82556c07b4d33821ae973eb9aba commit r11-3958-gf3ee94724686b82556c07b4d33821ae973eb9aba Author: Jason Merrill <ja...@redhat.com> Date: Thu Oct 15 12:54:16 2020 -0400 c++: Fix [[deprecated]] and implicit operator==. [PR97358] Trying to diagnose the problem with an implicit copy function breaks if the function isn't actually a copy function. gcc/cp/ChangeLog: PR c++/95844 * decl.c (copy_fn_p): Return false for a function that is neither a constructor nor an assignment operator. (move_signature_fn_p): Likewise. gcc/testsuite/ChangeLog: PR c++/95844 * g++.dg/cpp2a/spaceship-eq10.C: New test.