PVS-Studio warning V576 for Virtualdub

sint64 rva;

void tool_lookup(....) {
  ....
  printf("%08I64x   %s + %x [%s:%d]\n",
    addr, sym->name, addr-sym->rva, fn, line);
  ....
}

This suspicious code was found in Virtualdub project by PVS-Studio static code analyzer.
Warning message is:
V576 Incorrect format. Consider checking the fourth actual argument of the 'printf' function. The argument is expected to be not greater than 32-bit. Asuka lookup.cpp 56

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/