/* u_1_25.c:    Undefined behaviors on undefined macro argument.    */

#include    <stdio.h>

#define str( a)     # a

#define sub( x, y)  (x - y)

#define SUB         sub

main( void)

{

    int     a = 1, b = 2;

/* u.1.25:  Macro argument otherwise parsed as a directive. */

/*  "#define NAME"; or other undefined behaviour.   */

    puts( str(

#define NAME

    ));

#if 0   /* Added by C90: Corrigendum 1 (1994) and deleted by C99    */

/* u.1.26:  Expanded macro replacement list end with name of function-like

        macro.  */

    SUB( a, b);

#endif

    return  0;

}