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 8C65438346B6; Tue, 10 May 2022 08:18:24 +0000 (GMT)
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 8C65438346B6
From: "cvs-commit at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/100898] [9/10 Regression] ICE with -O2: in
 gimple_call_arg_ptr, at gimple.h:3264
Date: Tue, 10 May 2022 08:18:24 +0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: changed
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: gcc
X-Bugzilla-Component: middle-end
X-Bugzilla-Version: 12.0
X-Bugzilla-Keywords: ice-checking, ice-on-valid-code
X-Bugzilla-Severity: normal
X-Bugzilla-Who: cvs-commit at gcc dot gnu.org
X-Bugzilla-Status: ASSIGNED
X-Bugzilla-Resolution: 
X-Bugzilla-Priority: P2
X-Bugzilla-Assigned-To: jakub at gcc dot gnu.org
X-Bugzilla-Target-Milestone: 9.5
X-Bugzilla-Flags: 
X-Bugzilla-Changed-Fields: 
Message-ID: <bug-100898-4-B1RQ1jkDH2@http.gcc.gnu.org/bugzilla/>
In-Reply-To: <bug-100898-4@http.gcc.gnu.org/bugzilla/>
References: <bug-100898-4@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, 10 May 2022 08:18:24 -0000

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D100898

--- Comment #7 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-10 branch has been updated by Jakub Jelinek
<jakub@gcc.gnu.org>:

https://gcc.gnu.org/g:fb6579667cd87bc41afbd81b876e8e571712d289

commit r10-10616-gfb6579667cd87bc41afbd81b876e8e571712d289
Author: Jakub Jelinek <jakub@redhat.com>
Date:   Mon Jun 7 09:25:37 2021 +0200

    tree-inline: Fix up __builtin_va_arg_pack handling [PR100898]

    The following testcase ICEs, because gimple_call_arg_ptr (..., 0)
    asserts that there is at least one argument, while we were using
    it even if we didn't copy anything just to get a pointer from/to which
    the zero arguments should be copied.

    Fixed by guarding the memcpy calls.  Also, the code was calling
    gimple_call_num_args too many times - 5 times instead of 2, so the patch
    adds two temporaries for those.

    2021-06-07  Jakub Jelinek  <jakub@redhat.com>

            PR middle-end/100898
            * tree-inline.c (copy_bb): Only use gimple_call_arg_ptr if memc=
py
            should copy any arguments.  Don't call gimple_call_num_args
            on id->call_stmt or call_stmt more than once.

            * g++.dg/ext/va-arg-pack-3.C: New test.

    (cherry picked from commit d66a703c8ba86f3ca04cc10c3071696e6d014de6)=