golang bug476 代码
文件路径：/test/fixedbugs/bug476.go
/ compile
/ Copyright 2013 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.
/ Logical operation on named boolean type returns the same type,
/ supporting an implicit conversion to an interface type. This used
/ to crash gccgo.
package p
type B bool
func (b B) M() {}
type I interface {
M()
}
func F(a, b B) I {
return a && b
}