1// Copyright 2015 The Go Authors. All rights reserved. 2// Use of this source code is governed by a BSD-style 3// license that can be found in the LICENSE file. 4 5package main 6 7/* 8#cgo LDFLAGS: -fsanitize=memory 9#cgo CPPFLAGS: -fsanitize=memory 10 11#include <string.h> 12#include <stdint.h> 13#include <stdlib.h> 14 15void f(int32_t *p, int n) { 16 int32_t * volatile q = (int32_t *)malloc(sizeof(int32_t) * n); 17 memcpy(p, q, n * sizeof(*p)); 18 free(q); 19} 20 21void g(int32_t *p, int n) { 22 if (p[4] != 1) { 23 abort(); 24 } 25} 26*/ 27import "C" 28 29import ( 30 "unsafe" 31) 32 33func main() { 34 a := make([]int32, 10) 35 C.f((*C.int32_t)(unsafe.Pointer(&a[0])), C.int(len(a))) 36 a[4] = 1 37 C.g((*C.int32_t)(unsafe.Pointer(&a[0])), C.int(len(a))) 38} 39