| // 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) { |
| // We shouldn't get here; msan should stop us first. |
| exit(0); |
| } |
| } |
| */ |
| import "C" |
| |
| import ( |
| "unsafe" |
| ) |
| |
| func main() { |
| a := make([]int32, 10) |
| C.f((*C.int32_t)(unsafe.Pointer(&a[0])), C.int(len(a))) |
| a[3] = 1 |
| C.g((*C.int32_t)(unsafe.Pointer(&a[0])), C.int(len(a))) |
| } |
