go msan_fail 源码
golang msan_fail 代码
文件路径：/misc/cgo/testsanitizers/testdata/msan_fail.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) {
// 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)))
}
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