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 617CB3858036; Tue,  5 Oct 2021 22:06:04 +0000 (GMT)
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 617CB3858036
From: "nickhuang99 at hotmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/102624] New: testcase lambda-uneval11.C causes cc1plus 
 segment fault
Date: Tue, 05 Oct 2021 22:06:04 +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: 12.0
X-Bugzilla-Keywords: 
X-Bugzilla-Severity: normal
X-Bugzilla-Who: nickhuang99 at hotmail dot com
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-102624-4@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: Tue, 05 Oct 2021 22:06:04 -0000

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D102624

            Bug ID: 102624
           Summary: testcase lambda-uneval11.C causes cc1plus  segment
                    fault
           Product: gcc
           Version: 12.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: nickhuang99 at hotmail dot com
  Target Milestone: ---

The testcase g++.dg/cpp2a/lambda-uneval11.C causes cc1plus segment fault.
Running g++ driver won't expose this crash. Only running cc1plus directly c=
an
expose the crash.




./install/libexec/gcc/x86_64-unknown-linux-gnu/12.0.0/cc1plus -std=3Dc++20
gcc-clone/gcc/testsuite/g++.dg/cpp2a/lambda-uneval11.C
 <lambda()> void spam(decltype (<lambda>) (*)[sizeof (T)]) void foo()
<lambda()> static constexpr void<lambda()>::_FUN()
constexpr<lambda()>::operator void (*)()() const <lambda()> static constexpr
void<lambda()>::_FUN() constexpr<lambda()>::operator void (*)()() const
<lambda()> static constexpr void<lambda()>::_FUN()
constexpr<lambda()>::operator void (*)()() const <lambda()> static constexpr
void<lambda()>::_FUN() constexpr<lambda()>::operator void (*)()() const
constexpr<lambda()>::operator void (*)()() const <lambda()> static constexpr
void<lambda()>::_FUN() constexpr<lambda()>::operator void (*)()() const
gcc-clone/gcc/testsuite/g++.dg/cpp2a/lambda-uneval11.C: In instantiation of
=E2=80=98constexpr<lambda()>::operator void (*)()() const=E2=80=99:
gcc-clone/gcc/testsuite/g++.dg/cpp2a/lambda-uneval11.C:9:12:   required from
here
gcc-clone/gcc/testsuite/g++.dg/cpp2a/lambda-uneval11.C:4:25: internal compi=
ler
error: Segmentation fault
    4 | template <class T> void spam(decltype([]{}) (*s)[sizeof(T)] =3D nul=
lptr)
      |                         ^~~~
Please submit a full bug report,
with preprocessed source if appropriate.
See <https://gcc.gnu.org/bugs/> for instructions.=