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From: "cvs-commit at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/94205] [8/9/10 Regression] ICE in
 cxx_eval_constant_expression with 'this'-capturing lambda inside an NSDMI
 since r8-1251
Date: Wed, 01 Apr 2020 05:18:04 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D94205

--- Comment #3 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Jason Merrill <jason@gcc.gnu.org>:

https://gcc.gnu.org/g:76f09260b7eccd6c3cfa3dcf3c22897fe12a8065

commit r10-7490-g76f09260b7eccd6c3cfa3dcf3c22897fe12a8065
Author: Jason Merrill <jason@redhat.com>
Date:   Tue Mar 31 17:34:47 2020 -0400

    c++: Fix DMI with lambda 'this' capture [PR94205]

    We represent 'this' in a default member initializer with a
PLACEHOLDER_EXPR.
    Normally in constexpr evaluation when we encounter one it refers to
    ctx->ctor, but when we're creating a temporary of class type, that repl=
aces
    ctx->ctor, so a PLACEHOLDER_EXPR that refers to the type of the member
being
    initialized needs to be replaced before that happens.

    gcc/cp/ChangeLog
    2020-03-31  Jason Merrill  <jason@redhat.com>

            PR c++/94205
            * constexpr.c (cxx_eval_constant_expression) [TARGET_EXPR]: Call
            replace_placeholders.
            * typeck2.c (store_init_value): Fix arguments to
            fold_non_dependent_expr.=