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go/test/fixedbugs/issue8004.go
Emmanuel Odeke 53fd522c0d all: make copyright headers consistent with one space after period
Follows suit with https://go-review.googlesource.com/#/c/20111.

Generated by running
$ grep -R 'Go Authors.  All' * | cut -d":" -f1 | while read F;do perl -pi -e 's/Go
Authors.  All/Go Authors. All/g' $F;done

The code in cmd/internal/unvendor wasn't changed.

Fixes #15213

Change-Id: I4f235cee0a62ec435f9e8540a1ec08ae03b1a75f
Reviewed-on: https://go-review.googlesource.com/21819
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-05-02 13:43:18 +00:00

60 lines
1.1 KiB
Go

// run
// 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.
package main
import (
"reflect"
"runtime"
"unsafe"
)
func main() {
test1()
test2()
}
func test1() {
var all []interface{}
for i := 0; i < 100; i++ {
p := new([]int)
*p = append(*p, 1, 2, 3, 4)
h := (*reflect.SliceHeader)(unsafe.Pointer(p))
all = append(all, h, p)
}
runtime.GC()
for i := 0; i < 100; i++ {
p := *all[2*i+1].(*[]int)
if p[0] != 1 || p[1] != 2 || p[2] != 3 || p[3] != 4 {
println("BUG test1: bad slice at index", i, p[0], p[1], p[2], p[3])
return
}
}
}
type T struct {
H *reflect.SliceHeader
P *[]int
}
func test2() {
var all []T
for i := 0; i < 100; i++ {
p := new([]int)
*p = append(*p, 1, 2, 3, 4)
h := (*reflect.SliceHeader)(unsafe.Pointer(p))
all = append(all, T{H: h}, T{P: p})
}
runtime.GC()
for i := 0; i < 100; i++ {
p := *all[2*i+1].P
if p[0] != 1 || p[1] != 2 || p[2] != 3 || p[3] != 4 {
println("BUG test2: bad slice at index", i, p[0], p[1], p[2], p[3])
return
}
}
}