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go/misc/cgo/testsanitizers/msan2.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

36 lines
644 B
Go

// Copyright 2015 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
/*
#include <string.h>
#include <stdint.h>
#include <stdlib.h>
void f(int32_t *p, int n) {
int32_t * volatile q = (int32_t *)malloc(sizeof(int32_t) * n);
memcpy(p, q, n * sizeof(*p));
free(q);
}
void g(int32_t *p, int n) {
if (p[4] != 1) {
abort();
}
}
*/
import "C"
import (
"unsafe"
)
func main() {
a := make([]int32, 10)
C.f((*C.int32_t)(unsafe.Pointer(&a[0])), C.int(len(a)))
a[4] = 1
C.g((*C.int32_t)(unsafe.Pointer(&a[0])), C.int(len(a)))
}