malformed (void)
{
    char numbuf[LINENUM_LENGTH_BOUND + 1];
    fatal ("malformed patch at line %s: %s",
	   format_linenum (numbuf, p_input_line), buf);
		/* about as informative as "Syntax error" in C */
}

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.