File: n_29.c

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/* n_29.c:  #undef directive.   */

/* 29.1:    Undefined macro is not a macro. */
/*  DEFINED;    */
#define DEFINED
#undef  DEFINED
    DEFINED;

/* 29.2:    Undefining undefined name is not an error.  */
#undef  UNDEFINED

/* { dg-do preprocess }
   { dg-final { if ![file exist n_29.i] { return }                      } }
   { dg-final { if \{ [grep n_29.i "DEFINED"] != ""             \} \{   } }
   { dg-final { return \}                                               } }
   { dg-final { fail "n_29.c: #undef"                                   } }
 */