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 105633850423; Wed, 10 Feb 2021 21:05:50 +0000 (GMT)
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 105633850423
From: "mpolacek at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/99062] [10/11 Regression] ICE in tree_to_uhwi, at tree.h:4579
Date: Wed, 10 Feb 2021 21:05:49 +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: 11.0
X-Bugzilla-Keywords: ice-on-valid-code
X-Bugzilla-Severity: normal
X-Bugzilla-Who: mpolacek at gcc dot gnu.org
X-Bugzilla-Status: ASSIGNED
X-Bugzilla-Resolution: 
X-Bugzilla-Priority: P2
X-Bugzilla-Assigned-To: mpolacek at gcc dot gnu.org
X-Bugzilla-Target-Milestone: 10.3
X-Bugzilla-Flags: 
X-Bugzilla-Changed-Fields: 
Message-ID: <bug-99062-4-qJqRAhqIri@http.gcc.gnu.org/bugzilla/>
In-Reply-To: <bug-99062-4@http.gcc.gnu.org/bugzilla/>
References: <bug-99062-4@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, 10 Feb 2021 21:05:50 -0000

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D99062

--- Comment #5 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
(In reply to Martin Sebor from comment #4)
> There already is a test in the attribute handler to validate the alignmen=
t:
> it calls integer_pow2p (val).  Val here is:
>   <integer_cst 0x7fffea7f7ed0 type <integer_type 0x7fffea8105e8 int>
> constant -2147483648>
> but integer_pow2p (val) returns true.  I'd expect the function to return
> false since INT_MIN is not a power of two.  Anyway, the test integer_pow2p
> (val) should probably be changed to tree_int_cst_sgn (val) < 0 ||
> integer_pow2p (val).

About to post a patch that hoists the tree_int_cst_sgn check so that we don=
't
have to repeat it.=