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/* { dg-do compile } */

/* { dg-options "-O2 -Wstrict-overflow" } */

unsigned int

do_scrolling (unsigned int window_size, unsigned int writecost)

{

  unsigned int i = window_size;

  int terminal_window_p = 0;

  unsigned int queue = 0;

  for (i = window_size; i; i--)

    {

      if (writecost < i)

    ++queue;

      else if (writecost & 1)

    terminal_window_p = 1;

    }

  if (queue > 0)

    {

      if (!terminal_window_p)

    {

      terminal_window_p = 1;

    }

    }

  if (terminal_window_p)

    return 100;

  return 0;

}