test/asan/TestCases/Windows/dll_report_globals_symbolization_at_startup.cc

// RUN: %clang_cl_asan -LD -O0 -DDLL %s -Fe%t.dll
// RUN: %clang_cl_asan -O0 -DEXE %s %t.lib -Fe%te.exe
// RUN: %env_asan_opts=report_globals=2 %run %te.exe 2>&1 | FileCheck %s

// FIXME: Currently, the MT runtime build crashes on startup due to dbghelp.dll
// initialization failure.
// REQUIRES: asan-dynamic-runtime

#include <windows.h>
#include <stdio.h>

extern "C" {
#if defined(EXE)
__declspec(dllimport) int foo_from_dll();

// CHECK: in DLL(reason=1)
int main(int argc, char **argv) {
  foo_from_dll();
// CHECK: hello!
  printf("hello!\n");
  fflush(0);
// CHECK: in DLL(reason=0)
}
#elif defined(DLL)
// This global is registered at startup.
int x[42];

__declspec(dllexport) int foo_from_dll() {
  return x[2];
}

BOOL WINAPI DllMain(HMODULE, DWORD reason, LPVOID) {
  printf("in DLL(reason=%d)\n", (int)reason);
  fflush(0);
  return TRUE;
}
#else
# error oops!
#endif
}