more interface checks:
	- pointer to interface cannot have methods
	- record type names for better runtime error

R=r,ken
DELTA=85  (80 added, 0 deleted, 5 changed)
OCL=16658
CL=16722
diff --git a/test/interface1.go b/test/interface1.go
new file mode 100644
index 0000000..a6430cd
--- /dev/null
+++ b/test/interface1.go
@@ -0,0 +1,37 @@
+// errchk $G $D/$F.go
+
+// Copyright 2009 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package main
+
+package main
+
+type Inst interface {
+	Next()	*Inst;
+}
+
+type Regexp struct {
+	code *[]Inst;
+	start	Inst;
+}
+
+type Start struct {
+	foo	*Inst;
+}
+
+func (start *Start) Next() *Inst { return nil }
+
+
+func AddInst(Inst) *Inst {
+	print("ok in addinst\n");
+	return nil
+}
+
+func main() {
+	re := new(Regexp);
+	print("call addinst\n");
+	var x Inst = AddInst(new(Start));
+	print("return from  addinst\n");
+}