2015-02-12  Jakub Jelinek  <jakub@redhat.com>

	PR ipa/65034
	* stmt.c (emit_case_nodes): Use void_type_node instead of
	NULL_TREE as LABEL_DECL type.

	* decl.c (start_preparsed_function): Use void_type_node instead
	of NULL_TREE as LABEL_DECL type.

	* g++.dg/ipa/pr65034.C: New test.

--- gcc/stmt.c.jj	2015-01-15 23:39:17.000000000 +0100
+++ gcc/stmt.c	2015-02-12 10:11:44.688737296 +0100
@@ -1722,7 +1722,7 @@ emit_case_nodes (rtx index, case_node_pt
 
 	      tree test_label
 		= build_decl (curr_insn_location (),
-			      LABEL_DECL, NULL_TREE, NULL_TREE);
+			      LABEL_DECL, NULL_TREE, void_type_node);
 
               /* The default label could be reached either through the right
                  subtree or the left subtree. Divide the probability
@@ -1881,7 +1881,7 @@ emit_case_nodes (rtx index, case_node_pt
 		 Branch to a label where we will handle it later.  */
 
 	      test_label = build_decl (curr_insn_location (),
-				       LABEL_DECL, NULL_TREE, NULL_TREE);
+				       LABEL_DECL, NULL_TREE, void_type_node);
               probability = conditional_probability (
                   node->right->subtree_prob + default_prob/2,
                   subtree_prob + default_prob);
--- gcc/cp/decl.c.jj	2015-02-06 12:34:08.000000000 +0100
+++ gcc/cp/decl.c	2015-02-12 10:10:03.694397766 +0100
@@ -13703,7 +13703,7 @@ start_preparsed_function (tree decl1, tr
 	  && targetm.cxx.cdtor_returns_this ()))
     {
       cdtor_label = build_decl (input_location, 
-				LABEL_DECL, NULL_TREE, NULL_TREE);
+				LABEL_DECL, NULL_TREE, void_type_node);
       DECL_CONTEXT (cdtor_label) = current_function_decl;
     }
 
--- gcc/testsuite/g++.dg/ipa/pr65034.C.jj	2015-02-12 10:26:17.814382354 +0100
+++ gcc/testsuite/g++.dg/ipa/pr65034.C	2015-02-12 10:25:25.000000000 +0100
@@ -0,0 +1,40 @@
+// PR ipa/65034
+// { dg-do compile }
+// { dg-options "-g -O2" }
+
+enum B { C };
+enum D { E };
+struct A { A (B, D) { } };
+struct F { unsigned g, h, i, j; } a;
+
+void
+foo (unsigned x, unsigned y)
+{
+  switch (x)
+    {
+    case 6:
+      a.i = y;
+      break;
+    case 7:
+      a.j = y;
+      break;
+    default:
+      A (C, E);
+    }
+}
+
+void
+bar (unsigned x, unsigned y)
+{
+  switch (x)
+    {
+    case 6:
+      a.i = y;
+      break;
+    case 7:
+      a.j = y;
+      break;
+    default:
+      A (C, E);
+    }
+}