new bug: go on a method is wrong

R=gri
OCL=13741
CL=13741

test/bugs/bug084.go

+// $G $D/$F.go && $L $F.$A && ./$A.out
+
+// 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 Service struct {
+	rpc [2]int;
+}
+
+func (s *Service) Serve(a int64) {
+	if a != 1234 { panic a, " not 1234\n" }
+}
+
+var arith Service
+
+func main() {
+	c := new(chan string);
+	a := new(Service);
+	go a.Serve(1234);
+}

test/golden.out

@@ -255,6 +255,9 @@ BUG: fails incorrectly
 
 =========== bugs/bug083.go
 
+=========== bugs/bug084.go
+BUG: wrong answer
+
 =========== fixedbugs/bug000.go
 
 =========== fixedbugs/bug001.go