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 B24123858C20; Wed, 16 Feb 2022 14:45:39 +0000 (GMT)
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org B24123858C20
From: "armenchik at mail dot ru" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/104567] New: SFINAE check failure starting gcc 4.7.1 and up
 with -std=c++11
Date: Wed, 16 Feb 2022 14:45:39 +0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: new
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: gcc
X-Bugzilla-Component: c++
X-Bugzilla-Version: 4.7.1
X-Bugzilla-Keywords: 
X-Bugzilla-Severity: normal
X-Bugzilla-Who: armenchik at mail dot ru
X-Bugzilla-Status: UNCONFIRMED
X-Bugzilla-Resolution: 
X-Bugzilla-Priority: P3
X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org
X-Bugzilla-Target-Milestone: ---
X-Bugzilla-Flags: 
X-Bugzilla-Changed-Fields: bug_id short_desc product version bug_status
 bug_severity priority component assigned_to reporter target_milestone
Message-ID: <bug-104567-4@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
X-BeenThere: gcc-bugs@gcc.gnu.org
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: Gcc-bugs mailing list <gcc-bugs.gcc.gnu.org>
List-Unsubscribe: <https://gcc.gnu.org/mailman/options/gcc-bugs>,
 <mailto:gcc-bugs-request@gcc.gnu.org?subject=unsubscribe>
List-Archive: <https://gcc.gnu.org/pipermail/gcc-bugs/>
List-Post: <mailto:gcc-bugs@gcc.gnu.org>
List-Help: <mailto:gcc-bugs-request@gcc.gnu.org?subject=help>
List-Subscribe: <https://gcc.gnu.org/mailman/listinfo/gcc-bugs>,
 <mailto:gcc-bugs-request@gcc.gnu.org?subject=subscribe>
X-List-Received-Date: Wed, 16 Feb 2022 14:45:39 -0000

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D104567

            Bug ID: 104567
           Summary: SFINAE check failure starting gcc 4.7.1 and up with
                    -std=3Dc++11
           Product: gcc
           Version: 4.7.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: armenchik at mail dot ru
  Target Milestone: ---

template <typename _TAny, char const* value =3D _TAny::param>
constexpr bool has_char_static_param(int)
    { return true; }

template <typename _TAny>
constexpr bool has_char_static_param(...)
    { return false; }

struct checked_type
{
    constexpr static char param[] =3D "param"; // <- everything works fine
    //constexpr static int param =3D 0; // <- sfinae works fine, fails stat=
ic
assert
    //int param; // <- sfinae fails! reporting error during param substitut=
ion
    //char const* param; // <- sfinae fails again as above
};

int main()
{
    static_assert(has_char_static_param<checked_type>(0), "check failed");
    return 0;
}=