| // 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) |
| } |
