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36 lines
644 B
36 lines
644 B
4 months ago
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// Copyright 2015 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package main
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/*
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#include <string.h>
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#include <stdint.h>
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#include <stdlib.h>
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void f(int32_t *p, int n) {
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int32_t * volatile q = (int32_t *)malloc(sizeof(int32_t) * n);
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memcpy(p, q, n * sizeof(*p));
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free(q);
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}
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void g(int32_t *p, int n) {
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if (p[4] != 1) {
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abort();
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}
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}
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*/
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import "C"
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import (
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"unsafe"
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)
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func main() {
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a := make([]int32, 10)
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C.f((*C.int32_t)(unsafe.Pointer(&a[0])), C.int(len(a)))
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a[4] = 1
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C.g((*C.int32_t)(unsafe.Pointer(&a[0])), C.int(len(a)))
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}
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