[Bug c++/86521] [8 Regression] GCC 8 selects incorrect overload of ref-qualified conversion operator template

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86521

--- Comment #16 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-8 branch has been updated by Jason Merrill
<jason@gcc.gnu.org>:

https://gcc.gnu.org/g:32988aac5be4fa472823e21d2d0eb877faca5667

commit r8-10080-g32988aac5be4fa472823e21d2d0eb877faca5667
Author: Jason Merrill <jason@redhat.com>
Date:   Wed Feb 26 00:33:52 2020 -0500

    PR c++/86521 - C++17 copy elision in initialization by constructor.

    This is an overlooked case in C++17 mandatory copy elision: We want
overload
    resolution to reflect that initializing an object from a prvalue does not
    involve a copy or move constructor even when [over.match.ctor] says that
    only constructors are candidates.  Here I implement that by looking through
    the copy/move constructor in joust.

    gcc/cp/ChangeLog
    2020-02-26  Jason Merrill  <jason@redhat.com>

        PR c++/86521 - C++17 copy elision in initialization by constructor.
        * call.c (joust_maybe_elide_copy): New.
        (joust): Call it.