wide character path test program

test.cc

// cl test.cc & test.exe
#include <windows.h>
#include <stdio.h>

int main() {
  wchar_t path[] = L"a<b";
  CreateFileW(path, GENERIC_WRITE, 0, NULL, CREATE_NEW, FILE_ATTRIBUTE_NORMAL, NULL);
  
  LPVOID lastErrorString;
  DWORD lastError = GetLastError();
  FormatMessageA(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS, NULL, lastError, 0, (LPTSTR) &lastErrorString, 0, NULL);
  printf("error: %d %s\n", lastError, lastErrorString);
}