diff options
Diffstat (limited to '')
-rw-r--r-- | test/fixedbugs/issue24187.go | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/test/fixedbugs/issue24187.go b/test/fixedbugs/issue24187.go new file mode 100644 index 0000000..45fc929 --- /dev/null +++ b/test/fixedbugs/issue24187.go @@ -0,0 +1,33 @@ +// +build amd64p32 +// run + +// Copyright 2018 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 ( + "bytes" + "fmt" + "unsafe" +) + +func main() { + b := make([]byte, 128) + for i := range b { + b[i] = 1 + } + if bytes.IndexByte(b, 0) != -1 { + panic("found 0") + } + for i := range b { + b[i] = 0 + c := b + *(*int)(unsafe.Pointer(uintptr(unsafe.Pointer(&c)) + unsafe.Sizeof(uintptr(0)))) = 1<<31 - 1 + if bytes.IndexByte(c, 0) != i { + panic(fmt.Sprintf("missing 0 at %d\n", i)) + } + b[i] = 1 + } +} |