re PR c++/33501 (Copy constructor assumed to exist for undefined class)

	PR c++/33501
	* call.c (build_over_call): Don't check TREE_ADDRESSABLE
	on incomplete type.

	* g++.dg/warn/incomplete2.C: New test.
	* g++.dg/template/incomplete4.C: New test.
	* g++.dg/template/incomplete5.C: New test.

From-SVN: r129968

gcc/cp/ChangeLog

+2007-11-07  Jakub Jelinek  <jakub@redhat.com>
+
+	PR c++/33501
+	* call.c (build_over_call): Don't check TREE_ADDRESSABLE
+	on incomplete type.
+
 2007-11-06  Douglas Gregor  <doug.gregor@gmail.com>
 
 	PR c++/33977

gcc/cp/call.c

@@ -4993,7 +4993,8 @@ build_over_call (struct z_candidate *cand, int flags)
 
       /* Don't make a copy here if build_call is going to.  */
       if (conv->kind == ck_rvalue
-	  && !TREE_ADDRESSABLE (complete_type (type)))
+	  && COMPLETE_TYPE_P (complete_type (type))
+	  && !TREE_ADDRESSABLE (type))
 	conv = conv->u.next;
 
       val = convert_like_with_context

gcc/testsuite/ChangeLog

+2007-11-07  Jakub Jelinek  <jakub@redhat.com>
+
+	PR c++/33501
+	* g++.dg/warn/incomplete2.C: New test.
+	* g++.dg/template/incomplete4.C: New test.
+	* g++.dg/template/incomplete5.C: New test.
+
 2007-11-07  Olivier Hainque  <hainque@adacore.com>
 
 	* gnat.dg/max_align.adb: New test.

gcc/testsuite/g++.dg/template/incomplete4.C

+// PR c++/33501
+// { dg-do compile }
+
+class A;	// { dg-error "forward declaration" }
+
+template <typename T> struct X
+{
+  static int f (T);
+  static const T &make ();
+};
+
+int
+main ()
+{
+  return X<A>::f (X<A>::make ());	// { dg-error "invalid use of incomplete type|initializing argument" }
+}

gcc/testsuite/g++.dg/template/incomplete5.C

+// PR c++/33501
+// { dg-do compile }
+
+class A;	// { dg-error "forward declaration" }
+
+template <typename T> struct X
+{
+  static int f (T);
+  static const T &make ();
+  static const bool value = sizeof (f (make ())) == sizeof (int);	// { dg-error "invalid use of incomplete type|initializing argument" }
+};
+
+int
+main ()
+{
+  return X <A>::value;
+}

gcc/testsuite/g++.dg/warn/incomplete2.C

+// PR c++/33501
+// { dg-do compile }
+
+class A;	// { dg-error "forward declaration" }
+
+int f (A);
+const A &make ();
+
+int
+main ()
+{
+  return f (make ());	// { dg-error "invalid use of incomplete type|initializing argument" }
+}