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- // 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)))
- }
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