go asan2_fail 源码
golang asan2_fail 代码
文件路径：/misc/cgo/testsanitizers/testdata/asan2_fail.go
// Copyright 2021 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 <stdlib.h>
#include <stdio.h>
int *p;
int* f() {
int i;
p = (int *)malloc(5*sizeof(int));
for (i = 0; i < 5; i++) {
p[i] = i+10;
}
return p;
}
*/
import "C"
import (
"fmt"
"unsafe"
)
func main() {
a := C.f()
q5 := (*C.int)(unsafe.Add(unsafe.Pointer(a), 4*5))
// Access to C pointer out of bounds.
*q5 = 100 // BOOM
// We shouldn't get here; asan should stop us first.
fmt.Printf("q5: %d, %x\n", *q5, q5)
}
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