compiler-rt/test/asan/TestCases/Windows/crt_initializers.cpp

   1 // RUN: %clang_cl_asan %Od %s %Fe%t
   2 // RUN: %run %t | FileCheck %s
   3
   4 // This is a test for http://code.google.com/p/address-sanitizer/issues/detail?id=305
   5
   6 #include <stdio.h>
   7
   8 typedef void (*FPTR)();
   9
  10 // __xi_a and __xi_z are defined in VC/crt/src/crt0dat.c
  11 // and are located in .CRT$XIA and .CRT$XIZ respectively.
  12 extern "C" FPTR __xi_a, __xi_z;
  13
  14 int main() {
  15   unsigned count = 0;
  16
  17   // Iterate through CRT initializers.
  18   for (FPTR* it = &__xi_a; it < &__xi_z; ++it) {
  19     if (*it)
  20       count++;
  21   }
  22
  23   printf("Number of nonzero CRT initializers: %u\n", count);
  24 // CHECK: Number of nonzero CRT initializers
  25 }
  26
  27 void call_me_maybe() {}
  28
  29 #pragma data_seg(".CRT$XIB")
  30 // Add an initializer that shouldn't get its own redzone.
  31 FPTR run_on_startup = call_me_maybe;