void FUN_00407df4(int *param_1)

{

  int *piVar1;

  int iVar2;

  int *__ptr;

  while( true ) {

    __ptr = (int *)*param_1;

    if (__ptr == param_1) break;

    piVar1 = (int *)__ptr[1];

    iVar2 = *__ptr;

    *piVar1 = iVar2;

    *(int **)(iVar2 + 4) = piVar1;

    *__ptr = 0;

    __ptr[1] = 0;

    FUN_00407f28(__ptr + 2);

    free(__ptr);

  }

  return;

}