// compile
// Copyright 2016 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 y
type symSet []int
//go:noinline
func (s symSet) len() (r int) {
return 0
}
func f(m map[int]symSet) {
var symSet []int
for _, x := range symSet {
m[x] = nil
}
}