set_hunkmax (void)
{
    if (!p_line)
	p_line = xmalloc (hunkmax * sizeof *p_line);
    if (!p_len)
	p_len = xmalloc (hunkmax * sizeof *p_len);
    if (!p_Char)
	p_Char = xmalloc (hunkmax * sizeof *p_Char);
}

The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.