libselinux: wrong swig code for security_load_policy(3)

[cgzones]

The swig typemap

selinux/libselinux/src/selinuxswig_python.i

Lines 131 to 133 in 0a8c177

	%typemap(in,noblock=1,numinputs=0) char ** (char * temp = 0) {
	$1 = &temp;
	}

added in 9639f5d leads to wrong wrapper code being generated:

selinux.py:

def security_load_policy(len):
    return _selinux.security_load_policy(len)

selinuxswig_python_wrap.c:

SWIGINTERN PyObject *_wrap_security_load_policy(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
  PyObject *resultobj = 0;
  void *arg1 = (void *) 0 ;
  size_t arg2 ;
  char *temp1 = NULL ;
  size_t val2 ;
  int ecode2 = 0 ;
  PyObject *swig_obj[1] ;
  int result;

  {
    arg1 = temp1;  // <- assignment to NULL
  }
  if (!args) SWIG_fail;
  swig_obj[0] = args;
  ecode2 = SWIG_AsVal_size_t(swig_obj[0], &val2);
  if (!SWIG_IsOK(ecode2)) {
    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "security_load_policy" "', argument " "2"" of type '" "size_t""'");
  }
  arg2 = (size_t)(val2);
  {
    result = (int)security_load_policy(arg1,arg2);  // <- arg1 is always NULL
    if (result < 0) {
      PyErr_SetFromErrno(PyExc_OSError);
      SWIG_fail;
    }
  }
  resultobj = SWIG_From_int((int)(result));
  return resultobj;
fail:
  return NULL;
}

The typemap might have been indented for selinux_getenforcemode(3) only but does affect many more functions, e.g. selinux_check_access(3).