/* n_vargs.c:   Macro of variable arguments */

/* from C99 Standard 6.10.3 Examples    */

    #define debug( ...) fprintf( stderr, __VA_ARGS__)

    #define showlist( ...)  puts( #__VA_ARGS__)

    #define report( test, ...)  ((test) ? puts( #test)  \

            : printf( __VA_ARGS__))

    {

        /* fprintf( stderr, "Flag");    */

    debug( "Flag");

        /* fprintf( stderr, "X = %d\n", x);     */

    debug( "X = %d\n", x);

        /* puts( "The first, second, and third items.");   */

    showlist( The first, second, and third items.);

        /* ((x>y) ? puts( "x>y") : printf( "x is %d but y is %d", x, y));   */

    report( x>y, "x is %d but y is %d", x, y);

    }

/* { dg-do preprocess }

   { dg-options "-std=c99" }

   { dg-final { if ![file exist n_vargs.i] { return }                   } }

   { dg-final { if \{ [grep n_vargs.i "fprintf\\( stderr, *\"Flag\" *\\)"] != ""    \} \{   } }

   { dg-final { if \{ [grep n_vargs.i "fprintf\\( stderr, *\"X = %d\\\\n\", x *\\)"] != ""  \} \{   } }

   { dg-final { if \{ [grep n_vargs.i "puts\\( \"The first, second, and third items\.\" *\\)"] != ""  \} \{   } }

   { dg-final { if \{ [grep n_vargs.i "\\(\\( *x>y *\\) \[?\] puts\\( \"x>y\" *\\) : printf\\( *\"x is %d but y is %d\", x, y *\\)\\)"] != "" \} \{   } }

   { dg-final { return \} \} \} \}                                      } }

   { dg-final { fail "n_vargs.c: macro of variable arguments"           } }

 */