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Subject: [Bug c++/98326] [10/11 Regression] ICE: in create_tmp_var, at
 gimple-expr.c:482, converting stateless generic-lambda to function pointer
 since r10-599-gc652ff8312433483
Date: Tue, 09 Feb 2021 01:52:39 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D98326

--- 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:bdbca69e0720fa9062fe71782235141f629ae006

commit r11-7142-gbdbca69e0720fa9062fe71782235141f629ae006
Author: Jason Merrill <jason@redhat.com>
Date:   Mon Feb 8 17:04:03 2021 -0500

    c++: generic lambda, fn* conv, empty class [PR98326]

    Here, in the thunk returned from the captureless lambda conversion to
    pointer-to-function, we try to pass through invisible reference paramet=
ers
    by reference, without doing a copy.  The empty class copy optimization =
was
    messing that up.

    gcc/cp/ChangeLog:

            PR c++/98326
            PR c++/20408
            * cp-gimplify.c (simple_empty_class_p): Don't touch an invisiref
            parm.

    gcc/testsuite/ChangeLog:

            PR c++/98326
            * g++.dg/cpp1y/lambda-generic-empty1.C: New test.=