/* n_13_13.c:   #if expression with macros. */

#define ZERO_TOKEN

#define MACRO_0         0

#define MACRO_1         1

#define and             &&

#define or              ||

#define not_eq          !=

#define bitor           |

/* 13.13:   With macros expanding to operators. */

/*  Valid block */

#if     (1 bitor 2) == 3 and 4 not_eq 5 or 0

    /* #if (1 | 2) == 3 && 4 != 5 || 0  */

    Valid block 1

#else

    Block to be skipped

#endif

/* 13.14:   With macros expanding to 0 token, nonsence but legal expression.*/

/*  Valid block */

#if     ZERO_TOKEN MACRO_1 ZERO_TOKEN > ZERO_TOKEN MACRO_0 ZERO_TOKEN

    /* #if 1 > 0    */

    Valid block 2

#else

    Block to be skipped

#endif

/* { dg-do preprocess }

   { dg-options "-ansi -w" }

   { dg-final { if ![file exist n_13_13.i] { return }                   } }

   { dg-final { if \{ [grep n_13_13.i "Valid block 1"] != ""    \} \{   } }

   { dg-final { if \{ [grep n_13_13.i "Valid block 2"] != ""    \} \{   } }

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

   { dg-final { fail "n_13_13.c: #if expression with macros"            } }

 */