clang/test/Lexer/cxx-features.cpp

   1 // RUN: %clang_cc1 -std=c++98 -fcxx-exceptions -verify %s
   2 // RUN: %clang_cc1 -std=c++11 -fcxx-exceptions -verify %s
   3 // RUN: %clang_cc1 -std=c++14 -fcxx-exceptions -verify %s
   4 // RUN: %clang_cc1 -std=c++17 -fcxx-exceptions -verify %s
   5 // RUN: %clang_cc1 -std=c++20 -fcxx-exceptions -verify %s
   6 // RUN: %clang_cc1 -std=c++23 -fcxx-exceptions -verify %s
   7 // RUN: %clang_cc1 -std=c++2c -fcxx-exceptions -verify %s
   8
   9 //
  10 // RUN: %clang_cc1 -std=c++17 -fcxx-exceptions -fno-relaxed-template-template-args -DNO_RELAXED_TEMPLATE_TEMPLATE_ARGS=1 -verify %s
  11 // RUN: %clang_cc1 -std=c++17 -fcxx-exceptions -DCONCEPTS_TS=1 -verify %s
  12 // RUN: %clang_cc1 -std=c++14 -fno-rtti -fno-threadsafe-statics -verify %s -DNO_EXCEPTIONS -DNO_RTTI -DNO_THREADSAFE_STATICS
  13 // RUN: %clang_cc1 -std=c++14 -fchar8_t -DNO_EXCEPTIONS -DCHAR8_T -verify %s
  14 // RUN: %clang_cc1 -std=c++2a -fno-char8_t -DNO_EXCEPTIONS -DNO_CHAR8_T -verify %s
  15
  16 // expected-no-diagnostics
  17
  18 // FIXME using `defined` in a macro has undefined behavior.
  19 #if __cplusplus < 201103L
  20 #define check(macro, cxx98, cxx11, cxx14, cxx17, cxx20, cxx23, cxx26) (cxx98 == 0 ? defined(__cpp_##macro) : __cpp_##macro != cxx98)
  21 #elif __cplusplus < 201402L
  22 #define check(macro, cxx98, cxx11, cxx14, cxx17, cxx20, cxx23, cxx26) (cxx11 == 0 ? defined(__cpp_##macro) : __cpp_##macro != cxx11)
  23 #elif __cplusplus < 201703L
  24 #define check(macro, cxx98, cxx11, cxx14, cxx17, cxx20, cxx23, cxx26) (cxx14 == 0 ? defined(__cpp_##macro) : __cpp_##macro != cxx14)
  25 #elif __cplusplus < 202002L
  26 #define check(macro, cxx98, cxx11, cxx14, cxx17, cxx20, cxx23, cxx26) (cxx17 == 0 ? defined(__cpp_##macro) : __cpp_##macro != cxx17)
  27 #elif __cplusplus < 202302L
  28 #define check(macro, cxx98, cxx11, cxx14, cxx17, cxx20, cxx23, cxx26) (cxx20 == 0 ? defined(__cpp_##macro) : __cpp_##macro != cxx20)
  29 #elif __cplusplus == 202302L
  30 #define check(macro, cxx98, cxx11, cxx14, cxx17, cxx20, cxx23, cxx26) (cxx23 == 0 ? defined(__cpp_##macro) : __cpp_##macro != cxx23)
  31 #else
  32 #define check(macro, cxx98, cxx11, cxx14, cxx17, cxx20, cxx23, cxx26) (cxx26 == 0 ? defined(__cpp_##macro) : __cpp_##macro != cxx26)
  33 #endif
  34
  35 // --- C++26 features ---
  36
  37 #if check(variadic_friend, 202403, 202403, 202403, 202403, 202403, 202403, 202403)
  38 #error "wrong value for __cpp_variadic_friend"
  39 #endif
  40
  41 #if check(deleted_function, 202403, 202403, 202403, 202403, 202403, 202403, 202403)
  42 #error "wrong value for __cpp_deleted_function"
  43 #endif
  44
  45 #if check(pack_indexing, 202311, 202311, 202311, 202311, 202311, 202311, 202311)
  46 #error "wrong value for __cpp_pack_indexing"
  47 #endif
  48
  49 #if check(placeholder_variables, 202306, 202306, 202306, 202306, 202306, 202306, 202306)
  50 #error "wrong value for __cpp_placeholder_variables"
  51 #endif
  52
  53 // --- C++23 features ---
  54
  55 #if check(auto_cast, 0, 0, 0, 0, 0, 202110, 202110)
  56 #error "wrong value for __cpp_auto_cast"
  57 #endif
  58
  59
  60 #if check(implicit_move, 0, 0, 0, 0, 0, 202207, 202207)
  61 #error "wrong value for __cpp_implicit_move"
  62 #endif
  63
  64 #if check(size_t_suffix, 0, 0, 0, 0, 0, 202011, 202011)
  65 #error "wrong value for __cpp_size_t_suffix"
  66 #endif
  67
  68 #if check(if_consteval, 0, 0, 0, 0, 0, 202106, 202106)
  69 #error "wrong value for __cpp_if_consteval"
  70 #endif
  71
  72 #if check(multidimensional_subscript, 0, 0, 0, 0, 0, 202211, 202211)
  73 #error "wrong value for __cpp_multidimensional_subscript"
  74 #endif
  75
  76 #if check(static_call_operator, 0, 202207, 202207, 202207, 202207, 202207, 202207)
  77 #error "wrong value for __cpp_static_call_operator"
  78 #endif
  79
  80 #if check(named_character_escapes, 202207, 202207, 202207, 202207, 202207, 202207, 202207)
  81 #error "wrong value for __cpp_named_character_escapes"
  82 #endif
  83
  84 #if check(explicit_this_parameter, 0, 0, 0, 0, 0, 0, 0)
  85 #error "wrong value for __cpp_explicit_this_parameter"
  86 #endif
  87
  88 // --- C++20 features ---
  89
  90 #if check(aggregate_paren_init, 0, 0, 0, 0, 201902, 201902, 201902)
  91 #error "wrong value for __cpp_aggregate_paren_init"
  92 #endif
  93
  94 #if defined(CHAR8_T) ? check(char8_t, 202207, 202207, 202207, 202207, 202207, 202207, 202207) : \
  95     defined(NO_CHAR8_T) ? check(char8_t, 0, 0, 0, 0, 0, 0, 0) : \
  96     check(char8_t, 0, 0, 0, 0, 202207, 202207, 202207)
  97 #error "wrong value for __cpp_char8_t"
  98 #endif
  99
 100 #if check(concepts, 0, 0, 0, 0, 202002, 202002, 202002)
 101 #error "wrong value for __cpp_concepts"
 102 #endif
 103
 104 #if check(conditional_explicit, 0, 0, 0, 0, 201806, 201806, 201806)
 105 #error "wrong value for __cpp_conditional_explicit"
 106 #endif
 107
 108 #if check(consteval, 0, 0, 0, 0, 202211, 202211, 202211)
 109 #error "wrong value for __cpp_consteval"
 110 #endif
 111
 112 // constexpr checked below
 113
 114 #if check(constexpr_dynamic_alloc, 0, 0, 0, 0, 201907, 201907, 201907)
 115 #error "wrong value for __cpp_constexpr_dynamic_alloc"
 116 #endif
 117
 118 #if check(constexpr_in_decltype, 0, 201711, 201711, 201711, 201711, 201711, 201711)
 119 #error "wrong value for __cpp_constexpr_in_decltype"
 120 #endif
 121
 122 #if check(constinit, 0, 0, 0, 0, 201907, 201907, 201907)
 123 #error "wrong value for __cpp_constinit"
 124 #endif
 125
 126 // deduction_guides checked below
 127
 128 #if check(designated_initializers, 0, 0, 0, 0, 201707, 201707, 201707)
 129 #error "wrong value for __cpp_designated_initializers"
 130 #endif
 131
 132 // generic_lambdas checked below
 133
 134 #if check(impl_destroying_delete, 201806, 201806, 201806, 201806, 201806, 201806, 201806)
 135 #error "wrong value for __cpp_impl_destroying_delete"
 136 #endif
 137
 138 #if check(impl_three_way_comparison, 0, 0, 0, 0, 201907, 201907, 201907)
 139 #error "wrong value for __cpp_impl_three_way_comparison"
 140 #endif
 141
 142 #if check(impl_coroutine, 0, 0, 0, 0, 201902L, 201902L, 201902L)
 143 #error "wrong value for __cpp_impl_coroutine"
 144 #endif
 145
 146 // init_captures checked below
 147
 148 #if check(modules, 0, 0, 0, 0, 0, 0, 0)
 149 // FIXME: 201907 in C++20
 150 #error "wrong value for __cpp_modules"
 151 #endif
 152
 153 #if check(using_enum, 0, 0, 0, 0, 201907, 201907, 201907)
 154 #error "wrong value for __cpp_using_enum"
 155 #endif
 156
 157 // --- C++17 features ---
 158
 159 #if check(hex_float, 0, 0, 0, 201603, 201603, 201603, 201603)
 160 #error "wrong value for __cpp_hex_float"
 161 #endif
 162
 163 #if check(inline_variables, 0, 0, 0, 201606, 201606, 201606, 201606)
 164 #error "wrong value for __cpp_inline_variables"
 165 #endif
 166
 167 #if check(aligned_new, 0, 0, 0, 201606, 201606, 201606, 201606)
 168 #error "wrong value for __cpp_aligned_new"
 169 #endif
 170
 171 #if check(guaranteed_copy_elision, 0, 0, 0, 201606, 201606, 201606, 201606)
 172 #error "wrong value for __cpp_guaranteed_copy_elision"
 173 #endif
 174
 175 #if check(noexcept_function_type, 0, 0, 0, 201510, 201510, 201510, 201510)
 176 #error "wrong value for __cpp_noexcept_function_type"
 177 #endif
 178
 179 #if check(fold_expressions, 0, 0, 0, 201603, 201603, 201603, 201603)
 180 #error "wrong value for __cpp_fold_expressions"
 181 #endif
 182
 183 #if check(capture_star_this, 0, 0, 0, 201603, 201603, 201603, 201603)
 184 #error "wrong value for __cpp_capture_star_this"
 185 #endif
 186
 187 // constexpr checked below
 188
 189 #if check(if_constexpr, 0, 0, 0, 201606, 201606, 201606, 201606)
 190 #error "wrong value for __cpp_if_constexpr"
 191 #endif
 192
 193 #if check(deduction_guides, 0, 0, 0, 201703, 201703, 201703, 201703)
 194 // FIXME: 201907 in C++20
 195 #error "wrong value for __cpp_deduction_guides"
 196 #endif
 197
 198 #if check(nontype_template_parameter_auto, 0, 0, 0, 201606, 201606, 201606, 201606)
 199 #error "wrong value for __cpp_nontype_template_parameter_auto"
 200 #endif
 201
 202 // This is the old name (from P0096R4) for
 203 // __cpp_nontype_template_parameter_auto
 204 #if check(template_auto, 0, 0, 0, 201606, 201606, 201606, 201606)
 205 #error "wrong value for __cpp_template_auto"
 206 #endif
 207
 208 #if check(namespace_attributes, 0, 0, 0, 201411, 201411, 201411, 201411)
 209 // FIXME: allowed without warning in C++14 and C++11
 210 #error "wrong value for __cpp_namespace_attributes"
 211 #endif
 212
 213 #if check(enumerator_attributes, 0, 0, 0, 201411, 201411, 201411, 201411)
 214 // FIXME: allowed without warning in C++14 and C++11
 215 #error "wrong value for __cpp_enumerator_attributes"
 216 #endif
 217
 218 // This is an old name (from P0096R4), now removed from SD-6.
 219 #if check(nested_namespace_definitions, 0, 0, 0, 201411, 201411, 201411, 201411)
 220 #error "wrong value for __cpp_nested_namespace_definitions"
 221 #endif
 222
 223 // inheriting_constructors checked below
 224
 225 #if check(variadic_using, 0, 0, 0, 201611, 201611, 201611, 201611)
 226 #error "wrong value for __cpp_variadic_using"
 227 #endif
 228
 229 #if check(aggregate_bases, 0, 0, 0, 201603, 201603, 201603, 201603)
 230 #error "wrong value for __cpp_aggregate_bases"
 231 #endif
 232
 233 #if check(structured_bindings, 0, 0, 0, 202403L, 202403L, 202403L, 202403L)
 234 #error "wrong value for __cpp_structured_bindings"
 235 #endif
 236
 237 #if check(nontype_template_args, 0, 0, 0, 201411, 201411, 201411, 201411)
 238 // FIXME: 201911 in C++20
 239 #error "wrong value for __cpp_nontype_template_args"
 240 #endif
 241
 242 #if !defined(NO_RELAXED_TEMPLATE_TEMPLATE_ARGS) \
 243     ? check(template_template_args, 201611, 201611, 201611, 201611, 201611, 201611, 201611) \
 244     : check(template_template_args, 0, 0, 0, 0, 0, 0, 0)
 245 #error "wrong value for __cpp_template_template_args"
 246 #endif
 247
 248 // --- C++14 features ---
 249
 250 #if check(binary_literals, 0, 0, 201304, 201304, 201304, 201304, 201304)
 251 #error "wrong value for __cpp_binary_literals"
 252 #endif
 253
 254 // (Removed from SD-6.)
 255 #if check(digit_separators, 0, 0, 201309, 201309, 201309, 201309, 201309)
 256 #error "wrong value for __cpp_digit_separators"
 257 #endif
 258
 259 #if check(init_captures, 0, 0, 201304, 201304, 201803, 201803, 201803)
 260 #error "wrong value for __cpp_init_captures"
 261 #endif
 262
 263 #if check(generic_lambdas, 0, 0, 201304, 201304, 201707, 201707, 201707)
 264 #error "wrong value for __cpp_generic_lambdas"
 265 #endif
 266
 267 #if check(sized_deallocation, 0, 0, 201309, 201309, 201309, 201309, 201309)
 268 #error "wrong value for __cpp_sized_deallocation"
 269 #endif
 270
 271 // constexpr checked below
 272
 273 #if check(decltype_auto, 0, 0, 201304, 201304, 201304, 201304, 201304)
 274 #error "wrong value for __cpp_decltype_auto"
 275 #endif
 276
 277 #if check(return_type_deduction, 0, 0, 201304, 201304, 201304, 201304, 201304)
 278 #error "wrong value for __cpp_return_type_deduction"
 279 #endif
 280
 281 #if check(runtime_arrays, 0, 0, 0, 0, 0, 0, 0)
 282 #error "wrong value for __cpp_runtime_arrays"
 283 #endif
 284
 285 #if check(aggregate_nsdmi, 0, 0, 201304, 201304, 201304, 201304, 201304)
 286 #error "wrong value for __cpp_aggregate_nsdmi"
 287 #endif
 288
 289 #if check(variable_templates, 0, 0, 201304, 201304, 201304, 201304, 201304)
 290 #error "wrong value for __cpp_variable_templates"
 291 #endif
 292
 293 // --- C++11 features ---
 294
 295 #if check(unicode_characters, 0, 200704, 200704, 200704, 200704, 200704, 200704)
 296 #error "wrong value for __cpp_unicode_characters"
 297 #endif
 298
 299 #if check(raw_strings, 0, 200710, 200710, 200710, 200710, 200710, 200710)
 300 #error "wrong value for __cpp_raw_strings"
 301 #endif
 302
 303 #if check(unicode_literals, 0, 200710, 200710, 200710, 200710, 200710, 200710)
 304 #error "wrong value for __cpp_unicode_literals"
 305 #endif
 306
 307 #if check(user_defined_literals, 0, 200809, 200809, 200809, 200809, 200809, 200809)
 308 #error "wrong value for __cpp_user_defined_literals"
 309 #endif
 310
 311 #if defined(NO_THREADSAFE_STATICS) ? check(threadsafe_static_init, 0, 0, 0, 0, 0, 0, 0) : \
 312                                      check(threadsafe_static_init, 200806, 200806, 200806, 200806, 200806, 200806, 200806)
 313 #error "wrong value for __cpp_threadsafe_static_init"
 314 #endif
 315
 316 #if check(lambdas, 0, 200907, 200907, 200907, 200907, 200907, 200907)
 317 #error "wrong value for __cpp_lambdas"
 318 #endif
 319
 320 #if check(constexpr, 0, 200704, 201304, 201603, 201907, 202211, 202406L)
 321 #error "wrong value for __cpp_constexpr"
 322 #endif
 323
 324 #if check(range_based_for, 0, 200907, 200907, 201603, 201603, 202211, 202211)
 325 #error "wrong value for __cpp_range_based_for"
 326 #endif
 327
 328 #if check(static_assert, 0, 202306, 202306, 202306, 202306, 202306, 202306)
 329 #error "wrong value for __cpp_static_assert"
 330 #endif
 331
 332 #if check(decltype, 0, 200707, 200707, 200707, 200707, 200707, 200707)
 333 #error "wrong value for __cpp_decltype"
 334 #endif
 335
 336 #if check(attributes, 0, 200809, 200809, 200809, 200809, 200809, 200809)
 337 #error "wrong value for __cpp_attributes"
 338 #endif
 339
 340 #if check(rvalue_references, 0, 200610, 200610, 200610, 200610, 200610, 200610)
 341 #error "wrong value for __cpp_rvalue_references"
 342 #endif
 343
 344 #if check(variadic_templates, 0, 200704, 200704, 200704, 200704, 200704, 200704)
 345 #error "wrong value for __cpp_variadic_templates"
 346 #endif
 347
 348 #if check(initializer_lists, 0, 200806, 200806, 200806, 200806, 200806, 200806)
 349 #error "wrong value for __cpp_initializer_lists"
 350 #endif
 351
 352 #if check(delegating_constructors, 0, 200604, 200604, 200604, 200604, 200604, 200604)
 353 #error "wrong value for __cpp_delegating_constructors"
 354 #endif
 355
 356 #if check(nsdmi, 0, 200809, 200809, 200809, 200809, 200809, 200809)
 357 #error "wrong value for __cpp_nsdmi"
 358 #endif
 359
 360 #if check(inheriting_constructors, 0, 201511, 201511, 201511, 201511, 201511, 201511)
 361 #error "wrong value for __cpp_inheriting_constructors"
 362 #endif
 363
 364 #if check(ref_qualifiers, 0, 200710, 200710, 200710, 200710, 200710, 200710)
 365 #error "wrong value for __cpp_ref_qualifiers"
 366 #endif
 367
 368 #if check(alias_templates, 0, 200704, 200704, 200704, 200704, 200704, 200704)
 369 #error "wrong value for __cpp_alias_templates"
 370 #endif
 371
 372 // --- C++98 features ---
 373
 374 #if defined(NO_RTTI) ? check(rtti, 0, 0, 0, 0, 0, 0, 0 ) \
 375                      : check(rtti, 199711, 199711, 199711, 199711, 199711, 199711, 199711)
 376 #error "wrong value for __cpp_rtti"
 377 #endif
 378
 379 #if defined(NO_EXCEPTIONS) ? check(exceptions, 0, 0, 0, 0, 0, 0, 0) \
 380                            : check(exceptions, 199711, 199711, 199711, 199711, 199711, 199711, 199711)
 381 #error "wrong value for __cpp_exceptions"
 382 #endif