golang/test/fixedbugs/issue42568.go

26 lines
415 B
Go

// compile
// Copyright 2020 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.
// Ensure that late expansion correctly handles an OpIData with type interface{}
package p
type S struct{}
func (S) M() {}
type I interface {
M()
}
func f(i I) {
o := i.(interface{})
if _, ok := i.(*S); ok {
o = nil
}
println(o)
}