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From: "cvs-commit at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/110114] [13/14 Regression] ICE on calling overloaded
 function in case of incomplete argument type and C++ designated initializers
Date: Thu, 20 Jul 2023 14:33:25 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D110114

--- Comment #5 from CVS 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:2cb0dc866e8f95151df5d759157708108e850dd9

commit r14-2677-g2cb0dc866e8f95151df5d759157708108e850dd9
Author: Marek Polacek <polacek@redhat.com>
Date:   Wed Jul 19 08:47:29 2023 -0400

    c++: fix ICE with designated initializer [PR110114]

    r13-1227 added an assert checking that the index in a CONSTRUCTOR
    is a FIELD_DECL.  That's a reasonable assumption but in this case
    we never called reshape_init due to the type being incomplete, and
    so the index remained an identifier node: get_class_binding never
    got around to looking up the FIELD_DECL.

    We can avoid the crash by returning early in implicit_conversion_1; we'd
    return NULL anyway due to:

      if (i < CONSTRUCTOR_NELTS (ctor))
        return NULL;

    in build_aggr_conv.

            PR c++/110114

    gcc/cp/ChangeLog:

            * call.cc (implicit_conversion_1): Return early if the type isn=
't
            complete.

    gcc/testsuite/ChangeLog:

            * g++.dg/cpp0x/initlist100.C: Adjust expected diagnostic.
            * g++.dg/cpp2a/desig28.C: New test.
            * g++.dg/cpp2a/desig29.C: New test.=