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From: "dcb314 at hotmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/97890] Abstract virtual classes suddenly allowed as
 parameter types ?
Date: Wed, 18 Nov 2020 10:41:28 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D97890

--- Comment #1 from David Binderman <dcb314 at hotmail dot com> ---
For C++ testsuite file g++.dg/other/abstract8.C, the number
of errors seems to have gone down from 21 to 16.

Here is a diff of the errors:

$ diff /tmp/00 /tmp/11
1d0
< ./g++.dg/other/abstract8.C:13:9: error: invalid abstract type =E2=80=98A=
=E2=80=99 for =E2=80=98ar=E2=80=99
4,7d2
< ./g++.dg/other/abstract8.C:16:15: error: cannot allocate an object of
abstract type =E2=80=98A=E2=80=99
< ./g++.dg/other/abstract8.C:19:10: error: cannot declare variable =E2=80=
=98a=E2=80=99 to be of
abstract type =E2=80=98A=E2=80=99
< ./g++.dg/other/abstract8.C:21:1: error: invalid abstract return type =E2=
=80=98A=E2=80=99
< ./g++.dg/other/abstract8.C:22:9: error: cannot declare parameter to be of
abstract type =E2=80=98A=E2=80=99
9c4
< ./g++.dg/other/abstract8.C:26:1: error: invalid abstract return type =E2=
=80=98A=E2=80=99
---
> ./g++.dg/other/abstract8.C:25:4: error: creating array of =E2=80=98A=E2=
=80=99, which is an abstract class type
$=