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master
test/fixedbugs/issue33275.go
34 строки
542 B
Keith Randall
internal/fmtsort: don't out-of-bounds panic if there's a race condition
30 авг 2019, 08:41
30 авг 2019, 08:41
579c69a
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// skip // Copyright 2019 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 import ( "fmt" "time" ) func main() { // Make a big map. m := map[int]int{} for i := 0; i < 100000; i++ { m[i] = i } c := make(chan string) go func() { // Print the map. s := fmt.Sprintln(m) c <- s }() go func() { time.Sleep(1 * time.Millisecond) // Add an extra item to the map while iterating. m[-1] = -1 c <- "" }() <-c <-c }