--- /dev/null
+// Copyright 2014 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.
+
+// Enough gaps to trigger a map implementation of the method.
+// Also includes a duplicate to test that it doesn't cause problems
+
+package main
+
+import "fmt"
+
+type Prime int
+
+const (
+ p2 Prime = 2
+ p3 Prime = 3
+ p5 Prime = 5
+ p7 Prime = 7
+ p77 Prime = 7 // Duplicate; note that p77 doesn't appear below.
+ p11 Prime = 11
+ p13 Prime = 13
+ p17 Prime = 17
+ p19 Prime = 19
+ p23 Prime = 23
+ p29 Prime = 29
+ p37 Prime = 31
+ p41 Prime = 41
+ p43 Prime = 43
+)
+
+func main() {
+ ck(0, "Prime(0)")
+ ck(1, "Prime(1)")
+ ck(p2, "p2")
+ ck(p3, "p3")
+ ck(4, "Prime(4)")
+ ck(p5, "p5")
+ ck(p7, "p7")
+ ck(p77, "p7")
+ ck(p11, "p11")
+ ck(p13, "p13")
+ ck(p17, "p17")
+ ck(p19, "p19")
+ ck(p23, "p23")
+ ck(p29, "p29")
+ ck(p37, "p37")
+ ck(p41, "p41")
+ ck(p43, "p43")
+ ck(44, "Prime(44)")
+}
+
+func ck(prime Prime, str string) {
+ if fmt.Sprint(prime) != str {
+ panic("prime.go: " + str)
+ }
+}