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 E57873858403; Fri, 10 Dec 2021 09:41:20 +0000 (GMT)
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org E57873858403
From: "burnus at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/103642] New: [12 Regression] ICE in
 lower_omp_target: omp-low.c:12977 (fold_convert_loc) for omp target map(from:
 t.s->a[:N])
Date: Fri, 10 Dec 2021 09:41:20 +0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: new
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: gcc
X-Bugzilla-Component: middle-end
X-Bugzilla-Version: 12.0
X-Bugzilla-Keywords: ice-on-valid-code, openmp
X-Bugzilla-Severity: normal
X-Bugzilla-Who: burnus at gcc dot gnu.org
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
 keywords bug_severity priority component assigned_to reporter cc
 target_milestone
Message-ID: <bug-103642-4@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: Fri, 10 Dec 2021 09:41:21 -0000

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D103642

            Bug ID: 103642
           Summary: [12 Regression] ICE in lower_omp_target:
                    omp-low.c:12977 (fold_convert_loc) for omp target
                    map(from: t.s->a[:N])
           Product: gcc
           Version: 12.0
            Status: UNCONFIRMED
          Keywords: ice-on-valid-code, openmp
          Severity: normal
          Priority: P3
         Component: middle-end
          Assignee: unassigned at gcc dot gnu.org
          Reporter: burnus at gcc dot gnu.org
                CC: cltang at gcc dot gnu.org, jakub at gcc dot gnu.org
  Target Milestone: ---

Compiling
https://github.com/clang-ykt/omptests/blob/master/t-partial-struct/test.cpp
fails now as follows:

during GIMPLE pass: omplower
t-partial-struct/test.cpp: In function =E2=80=98int main()=E2=80=99:
t-partial-struct/test.cpp:232:13: internal compiler error: in fold_convert_=
loc,
at fold-const.c:2450
  232 |     #pragma omp target map(from: t.s->a[:N])
      |             ^~~
0x7d313f fold_convert_loc(unsigned int, tree_node*, tree_node*)
        ../../repos/gcc/gcc/fold-const.c:2450
0x11218d4 lower_omp_target
        ../../repos/gcc/gcc/omp-low.c:12977
0x11218d4 lower_omp_1
        ../../repos/gcc/gcc/omp-low.c:14223
0x11218d4 lower_omp
        ../../repos/gcc/gcc/omp-low.c:14362


Until recently, it failed with:
  t-partial-struct/test.cpp:232:37: error: expected ')' before '->' token
which means this is a regression.


Reduced testcase - compile with "gcc / g++ -fopenmp":

typedef struct {
  int *a;
} SSS;
typedef struct {
  SSS *s;
} TTT;
main() {
  TTT t;
#pragma omp target map(t.s->a[9])
  ;
}=