PVS-Studio warning V576 for iecsdk

int main(void) {
  ...
  char *p = NULL;
  ...
  wprintf(
    _T("Using power link directory: %s\n"),
    p
  );
  ...
}

You should either use printf() or convert p.

This suspicious code was found in iecsdk project by PVS-Studio static code analyzer.
Warning message is:
V576 Incorrect format. Consider checking the second actual argument of the 'wprintf' function. The pointer to string of wchar_t type symbols is expected. producer producer.c 166

PVS-Studio is a static analyzer for detecting bugs in the source code of applications written in C, C++, C++11, C++/CX. Site: http://www.viva64.com/en/pvs-studio/