I don't think any of these SGI modules even get used, but they're really
buggy-- you guys might want to consider just dropping them all together.

When printing errors larger than 128 bytes a stack based overflow occurs.

  44 static void
  45 ErrorHandler(long code, const char *fmt, ...)
  46 {
  47         va_list args;
  48         char buf[128];
  49 
  50         va_start(args, fmt);
  51         vsprintf(buf, fmt, args);
  52         va_end(args);
  53         PyErr_SetString(ErrorObject, buf);
  54 }

(Almost) nobody uses these any more, so let's close as won't fix.  The
SGI modules are removed from 3.0.  The few people who still have Irix
could probably care less about the buffer overflows, but they *might*
care about the modules (otherwise they wouldn't be on Irix :-).