From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gcc-bugs-return-443567-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org>
Received: (qmail 28260 invoked by alias); 14 Feb 2014 15:35:24 -0000
Mailing-List: contact gcc-bugs-help@gcc.gnu.org; run by ezmlm
Precedence: bulk
List-Id: <gcc-bugs.gcc.gnu.org>
List-Archive: <http://gcc.gnu.org/ml/gcc-bugs/>
List-Post: <mailto:gcc-bugs@gcc.gnu.org>
List-Help: <mailto:gcc-bugs-help@gcc.gnu.org>
Sender: gcc-bugs-owner@gcc.gnu.org
Received: (qmail 28235 invoked by uid 48); 14 Feb 2014 15:35:20 -0000
From: "reichelt at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/60198] New: ICE with _Cilk_spawn in expression within template function
Date: Fri, 14 Feb 2014 15:35:00 -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: 4.9.0
X-Bugzilla-Keywords:
X-Bugzilla-Severity: normal
X-Bugzilla-Who: reichelt at gcc dot gnu.org
X-Bugzilla-Status: UNCONFIRMED
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
Message-ID: <bug-60198-4@http.gcc.gnu.org/bugzilla/>
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: 7bit
X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/
Auto-Submitted: auto-generated
MIME-Version: 1.0
X-SW-Source: 2014-02/txt/msg01324.txt.bz2

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60198

            Bug ID: 60198
           Summary: ICE with _Cilk_spawn in expression within template
                    function
           Product: gcc
           Version: 4.9.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: reichelt at gcc dot gnu.org

The following valid(?) code snippet (compiled with "-fcilkplus") triggers
an ICE on trunk:

===========================================
template<typename T> int foo()
{
  int i = (_Cilk_spawn foo<T>()) + 0;
  return i;
}

template int foo<int>();
===========================================

bug.cc: In instantiation of 'int foo() [with T = int]':
bug.cc:7:23:   required from here
bug.cc:3:31: internal compiler error: in tsubst_copy, at cp/pt.c:12887
   int i = (_Cilk_spawn foo<T>()) + 0;
                               ^
0x62a933 tsubst_copy
        ../../gcc/gcc/cp/pt.c:12887
0x607956 tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, bool,
bool)
        ../../gcc/gcc/cp/pt.c:15110
0x608fda tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, bool,
bool)
        ../../gcc/gcc/cp/pt.c:14188
0x6115c6 tsubst_expr
        ../../gcc/gcc/cp/pt.c:13812
0x61435d tsubst_expr
        ../../gcc/gcc/cp/pt.c:13327
0x611093 tsubst_expr
        ../../gcc/gcc/cp/pt.c:13219
0x61208c tsubst_expr
        ../../gcc/gcc/cp/pt.c:13424
0x60f2a9 instantiate_decl(tree_node*, int, bool)
        ../../gcc/gcc/cp/pt.c:19690
0x64d8c7 instantiate_pending_templates(int)
        ../../gcc/gcc/cp/pt.c:19806
0x688bed cp_write_global_declarations()
        ../../gcc/gcc/cp/decl2.c:4148
Please submit a full bug report, [etc.]