From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gcc-bugzilla@gcc.gnu.org>
Received: by sourceware.org (Postfix, from userid 48)
	id 6576E3858D1E; Tue, 25 Apr 2023 15:29:13 +0000 (GMT)
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 6576E3858D1E
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org;
	s=default; t=1682436553;
	bh=+jqMTlkgns1j+5jHoqcPcm3+oQTrgggkuNllPVP7UJ4=;
	h=From:To:Subject:Date:In-Reply-To:References:From;
	b=ATJuyV+6f7075Uvk1NXvwGu3l9QjBKOJsc6qNj1TiRTHD5P5KQJa0PnlO4+bsmL4d
	 ckCOQYbzKKCedrwXPoCtIqmy+BJ/hrpToC75fL7gjfhrdxSo7gGVPKwV18SAZtw8u3
	 fOvN0MbFTOxi+MGlWB5IKFvBv78YKxzv8wwiio5s=
From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/109621] [10/11/12/13/14 Regression] GCC accepts invalid
 program with multiple using declarations
Date: Tue, 25 Apr 2023 15:29:13 +0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: changed
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: gcc
X-Bugzilla-Component: c++
X-Bugzilla-Version: 13.1.1
X-Bugzilla-Keywords: accepts-invalid
X-Bugzilla-Severity: normal
X-Bugzilla-Who: pinskia at gcc dot gnu.org
X-Bugzilla-Status: NEW
X-Bugzilla-Resolution: 
X-Bugzilla-Priority: P3
X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org
X-Bugzilla-Target-Milestone: 10.5
X-Bugzilla-Flags: 
X-Bugzilla-Changed-Fields: short_desc cf_known_to_fail target_milestone
 everconfirmed bug_status cf_known_to_work cf_reconfirmed_on
Message-ID: <bug-109621-4-Dtmw1nnhtx@http.gcc.gnu.org/bugzilla/>
In-Reply-To: <bug-109621-4@http.gcc.gnu.org/bugzilla/>
References: <bug-109621-4@http.gcc.gnu.org/bugzilla/>
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable
X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/
Auto-Submitted: auto-generated
MIME-Version: 1.0
List-Id: <gcc-bugs.sourceware.org>

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D109621

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|GCC accepts invalid program |[10/11/12/13/14 Regression]
                   |with multiple using         |GCC accepts invalid program
                   |declarations                |with multiple using
                   |                            |declarations
      Known to fail|                            |4.4.7
   Target Milestone|---                         |10.5
     Ever confirmed|0                           |1
             Status|UNCONFIRMED                 |NEW
      Known to work|                            |4.1.2
   Last reconfirmed|                            |2023-04-25

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
C++98 version which shows it is a regression and it started to fail between=
 GCC
4.1.2 and 4.4.7:
```
namespace X=20
{=20
    struct type {};=20
}
namespace Y=20
{=20
    typedef int type;
}
using Y::type;
using X::type;
int i =3D sizeof(type); //gcc and msvc accepts this but clang rejects this

```=