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From: "burnus at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/60746] New: [4.9 Regression] ICE segfault in
Date: Thu, 03 Apr 2014 12:59:00 -0000
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X-Bugzilla-Product: gcc
X-Bugzilla-Component: middle-end
X-Bugzilla-Version: 4.9.0
X-Bugzilla-Keywords: ice-on-valid-code
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60746

            Bug ID: 60746
           Summary: [4.9 Regression] ICE segfault in
           Product: gcc
           Version: 4.9.0
            Status: UNCONFIRMED
          Keywords: ice-on-valid-code
          Severity: normal
          Priority: P3
         Component: middle-end
          Assignee: unassigned at gcc dot gnu.org
          Reporter: burnus at gcc dot gnu.org
                CC: hubicka at gcc dot gnu.org, jamborm at gcc dot gnu.org,
                    rguenth at gcc dot gnu.org

The following is a regression of yesterday's r209048:

2014-04-02  Jan Hubicka  <hubicka@ucw.cz>

       PR ipa/60659
       * ipa-devirt.c (get_polymorphic_call_info): Do not ICE on type
       inconsistent code and instead mark the context inconsistent.
       (possible_polymorphic_call_targets): For inconsistent contexts
       return empty complete list.

Now it fails with:

tmp0/14012.ii:577:9876: internal compiler error: Segmentation fault
0xbb933f crash_signal
        ../../gcc/toplev.c:337
0x9e6e10 tree_check
        ../../gcc/gimple-expr.c:314
0x9e6e10 gimple_body(tree_node*)
        ../../gcc/gimple-expr.c:315
0xa064ec gimple_add_tmp_var(tree_node*)
        ../../gcc/gimplify.c:668
0x9e772a create_tmp_var(tree_node*, char const*)
        ../../gcc/gimple-expr.c:509
0x89a757 cgraph_redirect_edge_call_stmt_to_callee(cgraph_edge*)
        ../../gcc/cgraph.c:1484
0xa5f6b3 walk_polymorphic_call_targets
        ../../gcc/ipa.c:229
0xa5f6b3 symtab_remove_unreachable_nodes(bool, _IO_FILE*)
        ../../gcc/ipa.c:401
0x8a0a34 ipa_passes
        ../../gcc/cgraphunit.c:2052


A test case is currently being delta reduced.