[Bug c++/105426] [wrong-code][regression][coroutines] range-for temporaries are not persisted in coroutines

["cvs-commit at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105426

--- Comment #4 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Iain D Sandoe <iains@gcc.gnu.org>:

https://gcc.gnu.org/g:3d8d093e820b10a4b4b2af8949a368377c0888cb

commit r13-28-g3d8d093e820b10a4b4b2af8949a368377c0888cb
Author: Iain Sandoe <iain@sandoe.co.uk>
Date:   Thu Apr 28 20:06:29 2022 +0100

    c++, coroutines: Partial reversion of r12-8308-g15a176a833f23e [PR105426].

    The changes to fix PR 105287 included a tightening of the constraints on
which
    variables are promoted to frame copies.  This has exposed that we are
failing
    to name some variables that should be promoted.

    We avoid the use of DECL_UID to build anonymous symbols since that might
not
    be stable for -fcompare-debug.

    The long-term fix is to address the cases where the naming has been missed,
    but for the short-term (and for the GCC-12 branch) backing out the
additional
    constraint is proposed.

    Signed-off-by: Iain Sandoe <iain@sandoe.co.uk>

            PR c++/105426

    gcc/cp/ChangeLog:

            * coroutines.cc (register_local_var_uses): Allow promotion of
unnamed
            temporaries to coroutine frame copies.