1 // run 2 3 // Copyright 2016 The Go Authors. All rights reserved. 4 // Use of this source code is governed by a BSD-style 5 // license that can be found in the LICENSE file. 6 7 package main 8 9 import "time" 10 11 type T struct{} 12 13 func (*T) Foo(vals []interface{}) { 14 switch v := vals[0].(type) { 15 case string: 16 _ = v 17 } 18 } 19 20 type R struct{ *T } 21 22 type Q interface { 23 Foo([]interface{}) 24 } 25 26 func main() { 27 var q Q = &R{&T{}} 28 for i := 0; i < 10000; i++ { 29 go func() { 30 defer q.Foo([]interface{}{"meow"}) 31 time.Sleep(100 * time.Millisecond) 32 }() 33 } 34 time.Sleep(1 * time.Second) 35 } 36
