1 | // ASan interceptor can be accessed with __interceptor_ prefix. |
2 | |
3 | // RUN: %clangxx_asan -O0 %s -o %t && not %run %t 2>&1 | FileCheck %s |
4 | // RUN: %clangxx_asan -O1 %s -o %t && not %run %t 2>&1 | FileCheck %s |
5 | // RUN: %clangxx_asan -O2 %s -o %t && not %run %t 2>&1 | FileCheck %s |
6 | // RUN: %clangxx_asan -O3 %s -o %t && not %run %t 2>&1 | FileCheck %s |
7 | #include <stdlib.h> |
8 | #include <stdio.h> |
9 | #include <unistd.h> |
10 | |
11 | extern "C" void *__interceptor_malloc(size_t size); |
12 | extern "C" void *malloc(size_t size) { |
13 | write(fd: 2, buf: "malloc call\n" , n: sizeof("malloc call\n" ) - 1); |
14 | return __interceptor_malloc(size); |
15 | } |
16 | |
17 | int main() { |
18 | char *x = (char*)malloc(size: 10 * sizeof(char)); |
19 | free(ptr: x); |
20 | return (int)strtol(nptr: x, endptr: 0, base: 10); |
21 | // CHECK: malloc call |
22 | // CHECK: heap-use-after-free |
23 | } |
24 | |