mirror of
https://github.com/golang/go
synced 2024-10-01 16:18:32 -06:00
578c521fc2
When String() was called on the maximum value of an integer type (eg 255 for uint8) this would cause an integer overflow, which would cause an index error later in the code. Fixed by re-arranging the code slightly. Fixes golang/go#10563 Change-Id: I9fd016afc5eea22adbc3843f6081091fd50deccf Reviewed-on: https://go-review.googlesource.com/9255 Reviewed-by: Rob Pike <r@golang.org>
32 lines
494 B
Go
32 lines
494 B
Go
// Copyright 2014 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.
|
|
|
|
// Unsigned integers - check maximum size
|
|
|
|
package main
|
|
|
|
import "fmt"
|
|
|
|
type Unum2 uint8
|
|
|
|
const (
|
|
Zero Unum2 = iota
|
|
One
|
|
Two
|
|
)
|
|
|
|
func main() {
|
|
ck(Zero, "Zero")
|
|
ck(One, "One")
|
|
ck(Two, "Two")
|
|
ck(3, "Unum2(3)")
|
|
ck(255, "Unum2(255)")
|
|
}
|
|
|
|
func ck(unum Unum2, str string) {
|
|
if fmt.Sprint(unum) != str {
|
|
panic("unum.go: " + str)
|
|
}
|
|
}
|