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go/test/fixedbugs/issue19359.go
Josh Bleecher Snyder 04fc887761 runtime: delay marking maps as writing until after first alg call
Fixes #19359

Change-Id: I196b47cf0471915b6dc63785e8542aa1876ff695
Reviewed-on: https://go-review.googlesource.com/37665
Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>
2017-03-02 17:38:30 +00:00

38 lines
762 B
Go

// run
// Copyright 2017 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"
func set(m map[interface{}]interface{}, key interface{}) (err error) {
defer func() {
if r := recover(); r != nil {
err = fmt.Errorf("set failed: %v", r)
}
}()
m[key] = nil
return nil
}
func del(m map[interface{}]interface{}, key interface{}) (err error) {
defer func() {
if r := recover(); r != nil {
err = fmt.Errorf("del failed: %v", r)
}
}()
delete(m, key)
return nil
}
func main() {
m := make(map[interface{}]interface{})
set(m, []int{1, 2, 3})
set(m, "abc") // used to throw
del(m, []int{1, 2, 3})
del(m, "abc") // used to throw
}