| // run -gcflags=-G=3 | |
| // 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 | |
| func main() { | |
| F[any]() | |
| } | |
| func F[T any]() I[T] { | |
| return (*S1[T])(nil) | |
| } | |
| type I[T any] interface{} | |
| type S1[T any] struct { | |
| *S2[T] | |
| } | |
| type S2[T any] struct { | |
| S3 *S3[T] | |
| } | |
| type S3[T any] struct { | |
| x int | |
| } |