mirror of
https://github.com/golang/go
synced 2024-11-18 08:14:41 -07:00
579c69ac1c
Raising an out-of-bounds panic is confusing. There's no indication that the underlying problem is a race. The runtime already does a pretty good job of detecting this kind of race (modification while iterating). We might as well just reorganize a bit to avoid the out-of-bounds panic. Fixes #33275 Change-Id: Icdd337ad2eb3c84f999db0850ec1d2ff2c146b6e Reviewed-on: https://go-review.googlesource.com/c/go/+/191197 Reviewed-by: Martin Möhrmann <moehrmann@google.com>
26 lines
691 B
Go
26 lines
691 B
Go
// +build !nacl,!js
|
|
// run
|
|
|
|
// 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.
|
|
|
|
// Make sure we don't get an index out of bounds error
|
|
// while trying to print a map that is concurrently modified.
|
|
// The runtime might complain (throw) if it detects the modification,
|
|
// so we have to run the test as a subprocess.
|
|
|
|
package main
|
|
|
|
import (
|
|
"os/exec"
|
|
"strings"
|
|
)
|
|
|
|
func main() {
|
|
out, _ := exec.Command("go", "run", "fixedbugs/issue33275.go").CombinedOutput()
|
|
if strings.Contains(string(out), "index out of range") {
|
|
panic(`go run issue33275.go reported "index out of range"`)
|
|
}
|
|
}
|