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      1 // If user provides his own libc functions, ASan doesn't
      2 // intercept these functions.
      3 
      4 // RUN: %clangxx_asan -m64 -O0 %s -o %t && %t 2>&1 | FileCheck %s
      5 // RUN: %clangxx_asan -m64 -O1 %s -o %t && %t 2>&1 | FileCheck %s
      6 // RUN: %clangxx_asan -m64 -O2 %s -o %t && %t 2>&1 | FileCheck %s
      7 // RUN: %clangxx_asan -m64 -O3 %s -o %t && %t 2>&1 | FileCheck %s
      8 // RUN: %clangxx_asan -m32 -O0 %s -o %t && %t 2>&1 | FileCheck %s
      9 // RUN: %clangxx_asan -m32 -O1 %s -o %t && %t 2>&1 | FileCheck %s
     10 // RUN: %clangxx_asan -m32 -O2 %s -o %t && %t 2>&1 | FileCheck %s
     11 // RUN: %clangxx_asan -m32 -O3 %s -o %t && %t 2>&1 | FileCheck %s
     12 #include <stdlib.h>
     13 #include <stdio.h>
     14 
     15 extern "C" long strtol(const char *nptr, char **endptr, int base) {
     16   fprintf(stderr, "my_strtol_interceptor\n");
     17   return 0;
     18 }
     19 
     20 int main() {
     21   char *x = (char*)malloc(10 * sizeof(char));
     22   free(x);
     23   return (int)strtol(x, 0, 10);
     24   // CHECK: my_strtol_interceptor
     25   // CHECK-NOT: heap-use-after-free
     26 }
     27