From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gcc-bugs-return-444707-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org>
Received: (qmail 12766 invoked by alias); 24 Feb 2014 20:13:43 -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 12744 invoked by uid 48); 24 Feb 2014 20:13:39 -0000
From: "reichelt at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/60332] New: [c++1y] ICE with auto in function-pointer cast
Date: Mon, 24 Feb 2014 20:13:00 -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: ice-on-valid-code, lto
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 keywords bug_severity priority component assigned_to reporter
Message-ID: <bug-60332-4@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/msg02464.txt.bz2

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60332

            Bug ID: 60332
           Summary: [c++1y] ICE with auto in function-pointer cast
           Product: gcc
           Version: 4.9.0
            Status: UNCONFIRMED
          Keywords: ice-on-valid-code, lto
          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 "-std=c++1y -flto")
triggers an ICE on trunk:

=================================================================================
void foo();

auto f = (auto(*)())(&foo);
=================================================================================

bug.cc:3:27: internal compiler error: tree code 'template_type_parm' is not
supported in LTO streams
 auto f = (auto(*)())(&foo);
                           ^
0xaba08d DFS_write_tree
        ../../gcc/gcc/lto-streamer-out.c:1300
0xab941f DFS_write_tree_body
        ../../gcc/gcc/lto-streamer-out.c:476
0xab941f DFS_write_tree
        ../../gcc/gcc/lto-streamer-out.c:1208
0xab941f DFS_write_tree_body
        ../../gcc/gcc/lto-streamer-out.c:476
0xab941f DFS_write_tree
        ../../gcc/gcc/lto-streamer-out.c:1208
0xab941f DFS_write_tree_body
        ../../gcc/gcc/lto-streamer-out.c:476
0xab941f DFS_write_tree
        ../../gcc/gcc/lto-streamer-out.c:1208
0xabb727 lto_output_tree(output_block*, tree_node*, bool, bool)
        ../../gcc/gcc/lto-streamer-out.c:1390
0xab5aef write_global_stream
        ../../gcc/gcc/lto-streamer-out.c:2100
0xabd99e lto_output_decl_state_streams
        ../../gcc/gcc/lto-streamer-out.c:2144
0xabd99e produce_asm_for_decls()
        ../../gcc/gcc/lto-streamer-out.c:2429
0xaffe4f write_lto
        ../../gcc/gcc/passes.c:2297
0xb02ec0 ipa_write_summaries_1
        ../../gcc/gcc/passes.c:2356
0xb02ec0 ipa_write_summaries()
        ../../gcc/gcc/passes.c:2413
0x891cf7 ipa_passes
        ../../gcc/gcc/cgraphunit.c:2078
0x891cf7 compile()
        ../../gcc/gcc/cgraphunit.c:2174
0x892224 finalize_compilation_unit()
        ../../gcc/gcc/cgraphunit.c:2329
0x68deee cp_write_global_declarations()
        ../../gcc/gcc/cp/decl2.c:4449
Please submit a full bug report, [etc.]