golang p1 代码
文件路径：/test/fixedbugs/issue4370.dir/p1.go
// Copyright 2012 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 p1
type Magic int
type T struct {
x interface{}
}
func (t *T) M() bool {
_, ok := t.x.(Magic)
return ok
}
func F(t *T) {
println(t)
}