gcc/testsuite/gcc.dg/cpp/defined_trad.c

   1 /* Copyright (C) 2000 Free Software Foundation, Inc.  */
   2
   3 /* { dg-do preprocess } */
   4 /* { dg-options "-traditional" } */
   5
   6 /* Tests tradcpp0 with defined.  The defined operator in traditional C
   7    works just the same as the defined operator in Standard C.  */
   8
   9 /* Source: Zack Weinberg, glibc, Neil Booth 11 Dec 2000.  */
  10
  11 #if defined REGPARMS
  12 #error REGPARMS should not be defined
  13 #endif
  14
  15 #define REGPARMS 1
  16 #if !defined REGPARMS
  17 #error REGPARMS should be defined
  18 #endif
  19
  20 #define defined                 /* { dg-error "defined" } */
  21
  22 /* No diagnostics, though you could argue there should be.  */
  23 #if defined defined
  24 #error defined is defined!
  25 #endif
  26
  27 #define is_Z_defined defined Z
  28
  29 #if defined Z
  30 #error Z is not defined
  31 #endif
  32
  33 /* The behaviour of "defined" when it comes from a macro expansion is
  34    now documented.  */
  35 #if is_Z_defined
  36 #error Macro expanding into defined operator test 1
  37 #endif
  38
  39 #define Z
  40
  41 #if !defined Z
  42 #error Z is defined
  43 #endif
  44
  45 #if !is_Z_defined
  46 #error Macro expanding into defined operator test 2
  47 #endif
  48
  49 #undef is_Z_defined
  50 #undef Z
  51
  52 /* Do all the tests over again with the () form of defined.  */
  53
  54 /* No diagnostics, though you could argue there should be.  */
  55 #if defined(defined)
  56 #error defined is defined!
  57 #endif
  58
  59 #define is_Z_defined defined ( Z )
  60
  61 #if defined(Z)
  62 #error Z is not defined
  63 #endif
  64
  65 /* The behaviour of "defined" when it comes from a macro expansion is
  66    now documented.  */
  67 #if is_Z_defined
  68 #error Macro expanding into defined operator test 1
  69 #endif
  70
  71 #define Z
  72
  73 #if !defined(Z)
  74 #error Z is defined
  75 #endif
  76
  77 #if !is_Z_defined
  78 #error Macro expanding into defined operator test 2
  79 #endif