clang/test/Preprocessor/elifdef.c

   1 // RUN: %clang_cc1 %s -Eonly -verify
   2
   3 /* expected-warning@+2 {{use of a '#elifdef' directive is a C23 extension}} */
   4 #ifdef FOO
   5 #elifdef BAR
   6 #error "did not expect to get here"
   7 #endif
   8
   9 /* expected-error@+5 {{"got it"}} */
  10 /* expected-warning@+2 {{use of a '#elifdef' directive is a C23 extension}} */
  11 #ifdef FOO
  12 #elifdef BAR
  13 #else
  14 #error "got it"
  15 #endif
  16
  17 /* expected-error@+4 {{"got it"}} */
  18 /* expected-warning@+2 {{use of a '#elifndef' directive is a C23 extension}} */
  19 #ifdef FOO
  20 #elifndef BAR
  21 #error "got it"
  22 #endif
  23
  24 /* expected-error@+4 {{"got it"}} */
  25 /* expected-warning@+2 {{use of a '#elifndef' directive is a C23 extension}} */
  26 #ifdef FOO
  27 #elifndef BAR
  28 #error "got it"
  29 #else
  30 #error "did not expect to get here"
  31 #endif
  32
  33 #define BAR
  34 /* expected-error@+4 {{"got it"}} */
  35 /* expected-warning@+2 {{use of a '#elifdef' directive is a C23 extension}} */
  36 #ifdef FOO
  37 #elifdef BAR
  38 #error "got it"
  39 #endif
  40 #undef BAR
  41
  42 /* expected-warning@+2 {{use of a '#elifdef' directive is a C23 extension}} */
  43 #ifdef FOO
  44 #elifdef BAR // test that comments aren't an issue
  45 #error "did not expect to get here"
  46 #endif
  47
  48 /* expected-error@+5 {{"got it"}} */
  49 /* expected-warning@+2 {{use of a '#elifdef' directive is a C23 extension}} */
  50 #ifdef FOO
  51 #elifdef BAR // test that comments aren't an issue
  52 #else
  53 #error "got it"
  54 #endif
  55
  56 /* expected-error@+4 {{"got it"}} */
  57 /* expected-warning@+2 {{use of a '#elifndef' directive is a C23 extension}} */
  58 #ifdef FOO
  59 #elifndef BAR // test that comments aren't an issue
  60 #error "got it"
  61 #endif
  62
  63 /* expected-error@+4 {{"got it"}} */
  64 /* expected-warning@+2 {{use of a '#elifndef' directive is a C23 extension}} */
  65 #ifdef FOO
  66 #elifndef BAR // test that comments aren't an issue
  67 #error "got it"
  68 #else
  69 #error "did not expect to get here"
  70 #endif
  71
  72 #define BAR
  73 /* expected-error@+4 {{"got it"}} */
  74 /* expected-warning@+2 {{use of a '#elifdef' directive is a C23 extension}} */
  75 #ifdef FOO
  76 #elifdef BAR // test that comments aren't an issue
  77 #error "got it"
  78 #endif
  79 #undef BAR
  80
  81 #define BAR
  82 /* expected-error@+7 {{"got it"}} */
  83 /* expected-warning@+3 {{use of a '#elifndef' directive is a C23 extension}} */
  84 #ifdef FOO
  85 #error "did not expect to get here"
  86 #elifndef BAR
  87 #error "did not expect to get here"
  88 #else
  89 #error "got it"
  90 #endif
  91 #undef BAR
  92
  93 /* expected-error@+4 {{#elifdef after #else}} */
  94 /* expected-warning@+3 {{use of a '#elifdef' directive is a C23 extension}} */
  95 #ifdef FOO
  96 #else
  97 #elifdef BAR
  98 #endif
  99
 100 /* expected-error@+4 {{#elifndef after #else}} */
 101 /* expected-warning@+3 {{use of a '#elifndef' directive is a C23 extension}} */
 102 #ifdef FOO
 103 #else
 104 #elifndef BAR
 105 #endif
 106
 107 /* expected-warning@+1 {{use of a '#elifdef' directive is a C23 extension}} */
 108 #elifdef FOO /* expected-error {{#elifdef without #if}} */
 109 #endif       /* expected-error {{#endif without #if}} */
 110
 111 /* expected-warning@+1 {{use of a '#elifndef' directive is a C23 extension}} */
 112 #elifndef FOO /* expected-error {{#elifndef without #if}} */
 113 #endif        /* expected-error {{#endif without #if}} */
 114
 115 /* Note, we do not expect errors about the missing macro name in the skipped
 116    blocks. This is consistent with #elif behavior. */
 117 /* expected-error@+4 {{"got it"}} */
 118 /* expected-warning@+4 {{use of a '#elifdef' directive is a C23 extension}} */
 119 /* expected-warning@+4 {{use of a '#elifndef' directive is a C23 extension}} */
 120 #ifndef FOO
 121 #error "got it"
 122 #elifdef
 123 #elifndef
 124 #endif
 125
 126 /* expected-error@+3 {{#elif after #else}}*/
 127 #if 1
 128 #else
 129 #elif
 130 #endif