[Bug c++/70097] Cannot assign ref-qualified non-static member function

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70097

--- Comment #5 from GCC Commits <cvs-commit at gcc dot gnu.org> ---
The trunk branch has been updated by Jason Merrill <[email protected]>:

https://gcc.gnu.org/g:8f188b67517ce41561295506e3ba01ec1524854a

commit r17-3396-g8f188b67517ce41561295506e3ba01ec1524854a
Author: Eczbek <[email protected]>
Date:   Sun May 24 18:58:09 2026 -0400

    c++: Fix propagating reference qualifier from function type to member
function pointer type [PR70097]

    When forming a member function pointer type to a ref-qualified function
    type, the reference qualifier is incorrectly dropped.

            PR c++/70097

    gcc/cp/ChangeLog:

            * decl.cc (grokdeclarator): If rqual is REF_QUAL_NONE, set it to
            result of type_memfn_rqual before passing to build_memfn_type.

    gcc/testsuite/ChangeLog:

            * g++.dg/cpp0x/ref-qual22.C: New test.