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Subject: [Bug c++/100111] [10 Regression] `-fno-elide-constructors` with
 `constexpr` ctors causes ICE in GCC 10.3
Date: Thu, 12 May 2022 21:15:35 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D100111

--- Comment #14 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-10 branch has been updated by Jason Merrill
<jason@gcc.gnu.org>:

https://gcc.gnu.org/g:6c7905a9f10d28dfd27ddf21d3bf38a3e261ee10

commit r10-10722-g6c7905a9f10d28dfd27ddf21d3bf38a3e261ee10
Author: Jason Merrill <jason@redhat.com>
Date:   Tue Apr 12 17:46:59 2022 -0400

    c++: empty base constexpr -fno-elide-ctors [PR105245]

    The patch for 100111 extended our handling of empty base elision to the
case
    where the derived class has no other fields, but we still need to make =
sure
    that there's some initializer for the derived object.

            PR c++/105245
            PR c++/100111

    gcc/cp/ChangeLog:

            * constexpr.c (cxx_eval_store_expression): Build a CONSTRUCTOR
            as needed in empty base handling.

    gcc/testsuite/ChangeLog:

            * g++.dg/cpp1y/constexpr-empty2.C: Add -fno-elide-constructors.=