|
Packit Service |
8bf002 |
/* n_10.c: #if, #elif, #else and #endif pp-directive. */
|
|
Packit Service |
8bf002 |
|
|
Packit Service |
8bf002 |
#include "defs.h"
|
|
Packit Service |
8bf002 |
|
|
Packit Service |
8bf002 |
#define MACRO_0 0
|
|
Packit Service |
8bf002 |
#define MACRO_1 1
|
|
Packit Service |
8bf002 |
|
|
Packit Service |
8bf002 |
main( void)
|
|
Packit Service |
8bf002 |
{
|
|
Packit Service |
8bf002 |
fputs( "started\n", stderr);
|
|
Packit Service |
8bf002 |
|
|
Packit Service |
8bf002 |
/* 10.1: */
|
|
Packit Service |
8bf002 |
/* Note: an undefined identifier in #if expression is replaced to 0. */
|
|
Packit Service |
8bf002 |
#if a
|
|
Packit Service |
8bf002 |
assert( a);
|
|
Packit Service |
8bf002 |
#elif MACRO_0
|
|
Packit Service |
8bf002 |
assert( MACRO_0);
|
|
Packit Service |
8bf002 |
#elif MACRO_1 /* Valid block */
|
|
Packit Service |
8bf002 |
assert( MACRO_1);
|
|
Packit Service |
8bf002 |
#else
|
|
Packit Service |
8bf002 |
assert( 0);
|
|
Packit Service |
8bf002 |
#endif
|
|
Packit Service |
8bf002 |
|
|
Packit Service |
8bf002 |
/* 10.2: Comments must be processed even if in skipped #if block. */
|
|
Packit Service |
8bf002 |
/* At least tokenization of string literal and character constant is necessary
|
|
Packit Service |
8bf002 |
to process comments, e.g. /* is not a comment mark in string literal.
|
|
Packit Service |
8bf002 |
*/
|
|
Packit Service |
8bf002 |
#ifdef UNDEFINED
|
|
Packit Service |
8bf002 |
/* Comment */
|
|
Packit Service |
8bf002 |
"in literal /* is not a comment"
|
|
Packit Service |
8bf002 |
#endif
|
|
Packit Service |
8bf002 |
|
|
Packit Service |
8bf002 |
fputs( "success\n", stderr);
|
|
Packit Service |
8bf002 |
return 0;
|
|
Packit Service |
8bf002 |
}
|
|
Packit Service |
8bf002 |
|