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/* 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" } }
*/
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