From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gcc-bugs-return-442542-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org>
Received: (qmail 13798 invoked by alias); 4 Feb 2014 13:19:53 -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 13765 invoked by uid 48); 4 Feb 2014 13:19:48 -0000
From: "trippels at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug ipa/60058] [4.9 Regression] internal compiler error: Segmentation fault
Date: Tue, 04 Feb 2014 13:19:00 -0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: changed
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: gcc
X-Bugzilla-Component: ipa
X-Bugzilla-Version: 4.9.0
X-Bugzilla-Keywords:
X-Bugzilla-Severity: normal
X-Bugzilla-Who: trippels 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:
Message-ID: <bug-60058-4-nzeDdts4wO@http.gcc.gnu.org/bugzilla/>
In-Reply-To: <bug-60058-4@http.gcc.gnu.org/bugzilla/>
References: <bug-60058-4@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/msg00299.txt.bz2

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60058

--- Comment #1 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
Looks like an "if (target)" wrapper like in the other hunk of r207447 is
necessary.

diff --git a/gcc/ipa-cp.c b/gcc/ipa-cp.c
index 68afeb0d89e4..dab9e8a0f80d 100644
--- a/gcc/ipa-cp.c
+++ b/gcc/ipa-cp.c
@@ -1573,20 +1573,23 @@ ipa_get_indirect_edge_target_1 (struct cgraph_edge *ie,
        {
          target = gimple_get_virt_method_for_vtable
(ie->indirect_info->otr_token,
                                                      vtable, offset);
-         if ((TREE_CODE (TREE_TYPE (target)) == FUNCTION_TYPE
-              && DECL_FUNCTION_CODE (target) == BUILT_IN_UNREACHABLE)
-             || !possible_polymorphic_call_target_p
-                  (ie, cgraph_get_node (target)))
+         if (target)
            {
-             if (dump_file)
-               fprintf (dump_file,
-                        "Type inconsident devirtualization: %s/%i->%s\n",
-                        ie->caller->name (), ie->caller->order,
-                        IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (target)));
-             target = builtin_decl_implicit (BUILT_IN_UNREACHABLE);
-             cgraph_get_create_node (target);
+             if ((TREE_CODE (TREE_TYPE (target)) == FUNCTION_TYPE
+                  && DECL_FUNCTION_CODE (target) == BUILT_IN_UNREACHABLE)
+                 || !possible_polymorphic_call_target_p
+                      (ie, cgraph_get_node (target)))
+               {
+                 if (dump_file)
+                   fprintf (dump_file,
+                            "Type inconsident devirtualization: %s/%i->%s\n",
+                            ie->caller->name (), ie->caller->order,
+                            IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME
(target)));
+                 target = builtin_decl_implicit (BUILT_IN_UNREACHABLE);
+                 cgraph_get_create_node (target);
+               }
+             return target;
            }
-         return target;
        }
     }