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Subject: [Bug c++/99650] ICE when trying to form reference to void in
 structured binding
Date: Thu, 22 Apr 2021 16:52:05 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D99650

--- Comment #8 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-8 branch has been updated by Jakub Jelinek
<jakub@gcc.gnu.org>:

https://gcc.gnu.org/g:6132dc70413163b96955a3ebca33c849eb2eb88e

commit r8-10899-g6132dc70413163b96955a3ebca33c849eb2eb88e
Author: Jakub Jelinek <jakub@redhat.com>
Date:   Tue Mar 23 10:23:42 2021 +0100

    c++: Diagnose references to void in structured bindings [PR99650]

    We ICE on the following testcase, because std::tuple_element<...,...>::=
type
    is void and for structured bindings we therefore need to create
    void & or void && which is invalid.  We created such REFERENCE_TYPE and
    later ICEd in the middle-end.
    The following patch fixes it by diagnosing that.

    2021-03-23  Jakub Jelinek  <jakub@redhat.com>

            PR c++/99650
            * decl.c (cp_finish_decomp): Diagnose void initializers when
            using tuple_element and get.

            * g++.dg/cpp1z/decomp55.C: New test.

    (cherry picked from commit d5e379e3fe19362442b5d0ac608fb8ddf67fecd3)=