blob: 9636b9d10dc5e8146097a6f1cdab564847ec6e92 [file] [log] [blame]
// run
// Copyright 2021 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 main
type I[T any] interface {
foo()
}
type J[T any] interface {
foo()
bar()
}
//go:noinline
func f[T J[T]](x T) I[T] {
// contains a cast between two nonempty interfaces
return I[T](J[T](x))
}
type S struct {
x int
}
func (s *S) foo() {}
func (s *S) bar() {}
func main() {
i := f(&S{x: 7})
if i.(*S).x != 7 {
panic("bad")
}
}