1 // run 2 3 // Copyright 2014 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 // Test for a garbage collection bug involving not 8 // marking x as having its address taken by &x[0] 9 // when x is an array value. 10 11 package main 12 13 import ( 14 "bytes" 15 "fmt" 16 "runtime" 17 ) 18 19 func main() { 20 var x = [4]struct{ x, y interface{} }{ 21 {"a", "b"}, 22 {"c", "d"}, 23 {"e", "f"}, 24 {"g", "h"}, 25 } 26 27 var buf bytes.Buffer 28 for _, z := range x { 29 runtime.GC() 30 fmt.Fprintf(&buf, "%s %s ", z.x.(string), z.y.(string)) 31 } 32 33 if buf.String() != "a b c d e f g h " { 34 println("BUG wrong output\n", buf.String()) 35 } 36 } 37
