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);
malloc(size_t size)12 extern "C" void *malloc(size_t size) {
13 write(2, "malloc call\n", sizeof("malloc call\n") - 1);
14 return __interceptor_malloc(size);
15 }
16
main()17 int main() {
18 char *x = (char*)malloc(10 * sizeof(char));
19 free(x);
20 return (int)strtol(x, 0, 10);
21 // CHECK: malloc call
22 // CHECK: heap-use-after-free
23 }
24