re PR c++/20023 (internal compiler error: Segmentation fault)

	PR c++/20023
	PR tree-optimization/20009
	* convert.c (convert_to_integer): Revert 2005-02-16 change.

	* gcc.c-torture/compile/20050217-1.c: New test.
	* g++.dg/opt/switch3.C: New test.

From-SVN: r95208

gcc/ChangeLog

 2005-02-18  Jakub Jelinek  <jakub@redhat.com>
 
+	PR c++/20023
+	PR tree-optimization/20009
+	* convert.c (convert_to_integer): Revert 2005-02-16 change.
+
 	PR tree-optimization/18947
 	* cgraphunit.c (cgraph_finalize_function): When redefining an extern
 	inline, remove all nodes that are inlined into the extern inline

gcc/convert.c

@@ -387,8 +387,7 @@ convert_to_integer (tree type, tree expr)
 	expr = integer_zero_node;
       else
 	expr = fold (build1 (CONVERT_EXPR,
-			     lang_hooks.types.type_for_size
-				(POINTER_SIZE, TYPE_UNSIGNED (type)),
+			     lang_hooks.types.type_for_size (POINTER_SIZE, 0),
 			     expr));
 
       return convert_to_integer (type, expr);

gcc/testsuite/ChangeLog

 2005-02-18  Jakub Jelinek  <jakub@redhat.com>
 
+	PR c++/20023
+	PR tree-optimization/20009
+	* gcc.c-torture/compile/20050217-1.c: New test.
+	* g++.dg/opt/switch3.C: New test.
+
 	PR tree-optimization/18947
 	* gcc.c-torture/compile/20050215-1.c: New test.
 	* gcc.c-torture/compile/20050215-2.c: New test.

gcc/testsuite/g++.dg/opt/switch3.C

+// PR c++/20023
+// { dg-do compile }
+// { dg-options "-O2" }
+
+void f (void);
+typedef __SIZE_TYPE__ size_t;
+void g (void *a)
+{
+  size_t b = (size_t) a;
+  switch (b)
+  {
+    case 1:
+    f ();
+    break;
+  }
+}

gcc/testsuite/gcc.c-torture/compile/20050217-1.c

+/* PR c++/20023 */
+
+void f (void);
+typedef __SIZE_TYPE__ size_t;
+void g (void *a)
+{
+  size_t b = (size_t) a;
+  switch (b)
+  {
+    case 1:
+    f ();
+    break;
+  }
+}