1// If user provides his own libc functions, ASan doesn't
2// intercept these functions.
3
4// RUN: %clangxx_asan -O0 %s -o %t && %run %t 2>&1 | FileCheck %s
5// RUN: %clangxx_asan -O1 %s -o %t && %run %t 2>&1 | FileCheck %s
6// RUN: %clangxx_asan -O2 %s -o %t && %run %t 2>&1 | FileCheck %s
7// RUN: %clangxx_asan -O3 %s -o %t && %run %t 2>&1 | FileCheck %s
8#include <stdlib.h>
9#include <stdio.h>
10
11extern "C" long strtol(const char *nptr, char **endptr, int base) {
12  fprintf(stderr, "my_strtol_interceptor\n");
13  return 0;
14}
15
16int main() {
17  char *x = (char*)malloc(10 * sizeof(char));
18  free(x);
19  return (int)strtol(x, 0, 10);
20  // CHECK: my_strtol_interceptor
21  // CHECK-NOT: heap-use-after-free
22}
23