| // run -gcflags="-d=checkptr" | |
| // Copyright 2021 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 ( | |
| "strings" | |
| "unsafe" | |
| ) | |
| func main() { | |
| defer func() { | |
| err := recover() | |
| if err == nil { | |
| panic("expected panic") | |
| } | |
| if got := err.(error).Error(); !strings.Contains(got, "slice bounds out of range") { | |
| panic("expected panic slice out of bound, got " + got) | |
| } | |
| }() | |
| s := make([]int64, 100) | |
| p := unsafe.Pointer(&s[0]) | |
| n := 1000 | |
| _ = (*[10]int64)(p)[:n:n] | |
| } |