https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103455
--- Comment #13 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The releases/gcc-10 branch has been updated by Patrick Palka <ppa...@gcc.gnu.org>: https://gcc.gnu.org/g:09ab962a42d81eff636c1ebc7de43dac7cc7a7c0 commit r10-10604-g09ab962a42d81eff636c1ebc7de43dac7cc7a7c0 Author: Patrick Palka <ppa...@redhat.com> Date: Sat Mar 26 10:20:16 2022 -0400 c++: ICE when building builtin operator->* set [PR103455] Here when constructing the builtin operator->* candidate set according to the available conversion functions for the operand types, we end up considering a candidate with C1=T (through B's dependent conversion function) and C2=F, during which we crash from DERIVED_FROM_P because dependent_type_p sees a TEMPLATE_TYPE_PARM outside of a template context. Sidestepping the question of whether we should be considering such a dependent conversion function here in the first place, it seems futile to test DERIVED_FROM_P for anything other than an actual class type, so this patch fixes this ICE by simply guarding the DERIVED_FROM_P test with CLASS_TYPE_P instead of MAYBE_CLASS_TYPE_P. PR c++/103455 gcc/cp/ChangeLog: * call.c (add_builtin_candidate) <case MEMBER_REF>: Test CLASS_TYPE_P instead of MAYBE_CLASS_TYPE_P. gcc/testsuite/ChangeLog: * g++.dg/overload/builtin6.C: New test. (cherry picked from commit 04f19580e8dbdbc7366d0f5fd068aa0cecafdc9d)
