- interface methods must have full function type

R=r
OCL=19410
CL=19410

test/bugs/bug121.go

+// 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
+
+type T ()
+
+type I interface {
+	f, g ();
+	h T;  // should only allow FunctionType here
+}
+
+type S struct {
+}
+
+func (s *S) f() {}
+func (s *S) g() {}
+func (s *S) h() {}  // here we can't write (s *S) T either
+
+func main() {
+	var i I = new(S);
+}