/* n_11.c:  Operator "defined" in #if or #elif directive.   */

#define MACRO_abc   abc

#define MACRO_xyz   xyz

#define MACRO_0     0

#define ZERO_TOKEN

/* 11.1:    */

/*  abc;    */

/*  xyz;    */

#if     defined a

    a;

#else

    MACRO_abc;

#endif

#if     defined (MACRO_xyz)

    MACRO_xyz;

#else

    0;

#endif

/* 11.2:    "defined" is an unary operator whose result is 1 or 0.  */

#if     defined MACRO_0 * 3 != 3

#error  Bad handling of "defined" operator.

#endif

#if     (!defined ZERO_TOKEN != 0) || (-defined ZERO_TOKEN != -1)

#error  Bad grouping of "defined", !, - operator.

#endif

/* { dg-do preprocess }

   { dg-final { if ![file exist n_11.i] { return }                      } }

   { dg-final { if \{ [grep n_11.i "abc"] != ""                 \} \{   } }

   { dg-final { if \{ [grep n_11.i "xyz"] != ""                 \} \{   } }

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

   { dg-final { fail "n_11.c: 'defined' operator"                       } }

 */