gc: never include ( ) on singleton func return type
Fixes #749.
R=ken2
CC=golang-dev
https://golang.org/cl/963043
diff --git a/test/fixedbugs/bug269.go b/test/fixedbugs/bug269.go
new file mode 100644
index 0000000..4cc0408
--- /dev/null
+++ b/test/fixedbugs/bug269.go
@@ -0,0 +1,18 @@
+// $G $D/$F.go && $L $F.$A && ./$A.out
+
+// Copyright 2010 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.
+
+// http://code.google.com/p/go/issues/detail?id=749
+
+package main
+
+func f() (ok bool) { return false }
+
+func main() {
+ var i interface{}
+ i = f
+ _ = i.(func()bool)
+ _ = i.(func()(bool))
+}
