[Bug c++/125819] [reflection] don't include built-ins in members_of

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=125819

--- Comment #1 from GCC Commits <cvs-commit at gcc dot gnu.org> ---
The trunk branch has been updated by Marek Polacek <mpolacek@gcc.gnu.org>:

https://gcc.gnu.org/g:8ee8f2beab432c57a5b68b8816910c985c8e9356

commit r17-2096-g8ee8f2beab432c57a5b68b8816910c985c8e9356
Author: Marek Polacek <polacek@redhat.com>
Date:   Thu Jun 18 15:08:00 2026 -0400

    c++/reflection: members_of: skip built-ins [PR125819]

    Currently, we include all the built-ins like __builtin_fdimf32x in
    the result of members_of.  We probably should skip them.  This patch
    uses DECL_IS_UNDECLARED_BUILTIN so that we skip __builtin_abs but
    include abs.

    On ^^:: this reduces the # of elements from 2591 to 651.

            PR c++/125819

    gcc/cp/ChangeLog:

            * reflect.cc (namespace_members_of): Skip
            DECL_IS_UNDECLARED_BUILTIN decls.

    gcc/testsuite/ChangeLog:

            * g++.dg/reflect/members_of17.C: New test.

    Reviewed-by: Jason Merrill <jason@redhat.com>