1  /* Copyright (C) 2000 Free Software Foundation, Inc.  */
       2  
       3  /* { dg-do preprocess } */
       4  
       5  /* Tests behavior of the defined operator.  */
       6  
       7  /*  Source: Neil Booth, 29 Oct 2000, Zack Weinberg 11 Dec 2000.  */
       8  
       9  #define defined			/* { dg-error "defined" } */
      10  
      11  /* No diagnostics, though you could argue there should be.  */
      12  #if defined defined
      13  #error defined is defined!
      14  #endif
      15  
      16  #define is_Z_defined defined Z
      17  
      18  #if defined Z
      19  #error Z is not defined
      20  #endif
      21  
      22  /* The behavior of "defined" when it comes from a macro expansion is
      23     now documented.  */
      24  #if is_Z_defined                /* { dg-error "may not be portable" } */
      25  #error Macro expanding into defined operator test 1
      26  #endif
      27  
      28  #define Z
      29  
      30  #if !defined Z
      31  #error Z is defined
      32  #endif
      33  
      34  #if !is_Z_defined               /* { dg-error "may not be portable" } */
      35  #error Macro expanding into defined operator test 2
      36  #endif
      37  
      38  #undef is_Z_defined
      39  #undef Z
      40  
      41  /* Do all the tests over again with the () form of defined.  */
      42  
      43  /* No diagnostics, though you could argue there should be.  */
      44  #if defined(defined)
      45  #error defined is defined!
      46  #endif
      47  
      48  #define is_Z_defined defined ( Z )
      49  
      50  #if defined(Z)
      51  #error Z is not defined
      52  #endif
      53  
      54  /* The behavior of "defined" when it comes from a macro expansion is
      55     now documented.  */
      56  #if is_Z_defined                /* { dg-error "may not be portable" } */
      57  #error Macro expanding into defined operator test 1
      58  #endif
      59  
      60  #define Z
      61  
      62  #if !defined(Z)
      63  #error Z is defined
      64  #endif
      65  
      66  #if !is_Z_defined               /* { dg-error "may not be portable" } */
      67  #error Macro expanding into defined operator test 2
      68  #endif
      69  
      70  /* Use of defined in different contexts.  */
      71  
      72  #define bad1 defined
      73  #if !bad1 Z			/* { dg-error "may not be portable" } */
      74  #error Z is defined
      75  #endif 
      76  
      77  #if !bad1 (Z)			/* { dg-error "may not be portable" } */
      78  #error Z is defined
      79  #endif 
      80  
      81  #define bad2 defined (Z
      82  #if !bad2)			/* { dg-error "may not be portable" } */
      83  #error Z is defined
      84  #endif 
      85