gcc/ada/fe.h

   1 /****************************************************************************
   2  *                                                                          *
   3  *                         GNAT COMPILER COMPONENTS                         *
   4  *                                                                          *
   5  *                                    FE                                    *
   6  *                                                                          *
   7  *                              C Header File                               *
   8  *                                                                          *
   9  *          Copyright (C) 1992-2024, Free Software Foundation, Inc.         *
  10  *                                                                          *
  11  * GNAT is free software;  you can  redistribute it  and/or modify it under *
  12  * terms of the  GNU General Public License as published  by the Free Soft- *
  13  * ware  Foundation;  either version 3,  or (at your option) any later ver- *
  14  * sion.  GNAT is distributed in the hope that it will be useful, but WITH- *
  15  * OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY *
  16  * or FITNESS FOR A PARTICULAR PURPOSE.                                     *
  17  *                                                                          *
  18  * As a special exception under Section 7 of GPL version 3, you are granted *
  19  * additional permissions described in the GCC Runtime Library Exception,   *
  20  * version 3.1, as published by the Free Software Foundation.               *
  21  *                                                                          *
  22  * You should have received a copy of the GNU General Public License and    *
  23  * a copy of the GCC Runtime Library Exception along with this program;     *
  24  * see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see    *
  25  * <http://www.gnu.org/licenses/>.                                          *
  26  *                                                                          *
  27  * GNAT was originally developed  by the GNAT team at  New York University. *
  28  * Extensive contributions were provided by Ada Core Technologies Inc.      *
  29  *                                                                          *
  30  ****************************************************************************/
  31
  32 /* This is the C header that contains the declarations of Ada subprograms and
  33    variables used by gigi and not declared in other C header files.  It was
  34    created manually from Ada specifications.  The original Ada declarations
  35    in these specifications must be marked with:
  36
  37    "WARNING: There is a matching C declaration of this <entity_kind> in fe.h"
  38
  39    where <entity_kind> is either "subprogram" or "variable" or "type".
  40
  41    WARNING: functions taking String_Pointer parameters must abide by the rule
  42    documented alongside the definition of String_Pointer in types.h.  */
  43
  44 #ifdef __cplusplus
  45 extern "C" {
  46 #endif
  47
  48 /* atree: */
  49
  50 #define Serious_Errors_Detected         atree__serious_errors_detected
  51
  52 extern Nat Serious_Errors_Detected;
  53
  54 /* comperr: */
  55
  56 #define Compiler_Abort          comperr__compiler_abort
  57
  58 extern void Compiler_Abort (String_Pointer, String_Pointer, Boolean) ATTRIBUTE_NORETURN;
  59
  60 /* debug: */
  61
  62 #define Debug_Flag_Dot_KK       debug__debug_flag_dot_kk
  63 #define Debug_Flag_Dot_R        debug__debug_flag_dot_r
  64 #define Debug_Flag_Dot_8        debug__debug_flag_dot_8
  65 #define Debug_Flag_NN           debug__debug_flag_nn
  66
  67 extern Boolean Debug_Flag_Dot_KK;
  68 extern Boolean Debug_Flag_Dot_R;
  69 extern Boolean Debug_Flag_Dot_8;
  70 extern Boolean Debug_Flag_NN;
  71
  72 /* einfo: */
  73
  74 /* Valid_Uint is used to preserve the old behavior of Esize and
  75    friends, where Uint_0 was the default. All calls to this
  76    are questionable. */
  77 INLINE Valid_Uint
  78 No_Uint_To_0 (Uint X)
  79 {
  80   return X == No_Uint ? Uint_0 : X;
  81 }
  82
  83 #define Set_Alignment                   einfo__entities__set_alignment
  84 #define Set_Component_Bit_Offset        einfo__entities__set_component_bit_offset
  85 #define Set_Component_Size              einfo__entities__set_component_size
  86 #define Set_Esize                       einfo__entities__set_esize
  87 #define Set_Mechanism                   einfo__entities__set_mechanism
  88 #define Set_Normalized_First_Bit        einfo__entities__set_normalized_first_bit
  89 #define Set_Normalized_Position         einfo__entities__set_normalized_position
  90 #define Set_RM_Size                     einfo__entities__set_rm_size
  91
  92 extern void Set_Alignment               (Entity_Id, Uint);
  93 extern void Set_Component_Bit_Offset    (Entity_Id, Uint);
  94 extern void Set_Component_Size          (Entity_Id, Uint);
  95 extern void Set_Esize                   (Entity_Id, Uint);
  96 extern void Set_Mechanism               (Entity_Id, Mechanism_Type);
  97 extern void Set_Normalized_First_Bit    (Entity_Id, Uint);
  98 extern void Set_Normalized_Position     (Entity_Id, Uint);
  99 extern void Set_RM_Size                 (Entity_Id, Uint);
 100
 101 #define Is_Base_Type            einfo__utils__is_base_type
 102 #define Is_Entity_Name          einfo__utils__is_entity_name
 103
 104 extern Boolean Is_Base_Type     (Entity_Id);
 105 extern Boolean Is_Entity_Name   (Node_Id);
 106
 107 #define Get_Attribute_Definition_Clause einfo__utils__get_attribute_definition_clause
 108
 109 extern Node_Id Get_Attribute_Definition_Clause (Entity_Id, unsigned char);
 110
 111 /* errout: */
 112
 113 #define Error_Msg_N             errout__error_msg_n
 114 #define Error_Msg_NE            errout__error_msg_ne
 115 #define Set_Identifier_Casing   errout__set_identifier_casing
 116
 117 extern void Error_Msg_N                 (String_Pointer, Node_Id);
 118 extern void Error_Msg_NE                (String_Pointer, Node_Id, Entity_Id);
 119 extern void Set_Identifier_Casing       (void *, const void *);
 120
 121 /* err_vars: */
 122
 123 #define Error_Msg_Uint_1        err_vars__error_msg_uint_1
 124 #define Error_Msg_Uint_2        err_vars__error_msg_uint_2
 125
 126 extern Uint Error_Msg_Uint_1;
 127 extern Uint Error_Msg_Uint_2;
 128
 129 /* exp_ch11:  */
 130
 131 #define Get_Local_Raise_Call_Entity     exp_ch11__get_local_raise_call_entity
 132 #define Get_RT_Exception_Entity         exp_ch11__get_rt_exception_entity
 133 #define Get_RT_Exception_Name           exp_ch11__get_rt_exception_name
 134 #define Warn_If_No_Local_Raise          exp_ch11__warn_if_no_local_raise
 135
 136 extern Entity_Id Get_Local_Raise_Call_Entity    (void);
 137 extern Entity_Id Get_RT_Exception_Entity        (int);
 138 extern void Get_RT_Exception_Name               (enum RT_Exception_Code);
 139 extern void Warn_If_No_Local_Raise              (int);
 140
 141 /* exp_code:  */
 142
 143 #define Asm_Input_Constraint    exp_code__asm_input_constraint
 144 #define Asm_Input_Value         exp_code__asm_input_value
 145 #define Asm_Output_Constraint   exp_code__asm_output_constraint
 146 #define Asm_Output_Variable     exp_code__asm_output_variable
 147 #define Asm_Template            exp_code__asm_template
 148 #define Clobber_Get_Next        exp_code__clobber_get_next
 149 #define Clobber_Setup           exp_code__clobber_setup
 150 #define Is_Asm_Volatile         exp_code__is_asm_volatile
 151 #define Next_Asm_Input          exp_code__next_asm_input
 152 #define Next_Asm_Output         exp_code__next_asm_output
 153 #define Setup_Asm_Inputs        exp_code__setup_asm_inputs
 154 #define Setup_Asm_Outputs       exp_code__setup_asm_outputs
 155
 156 extern Node_Id Asm_Input_Constraint     (void);
 157 extern Node_Id Asm_Input_Value          (void);
 158 extern Node_Id Asm_Output_Constraint    (void);
 159 extern Node_Id Asm_Output_Variable      (void);
 160 extern Node_Id Asm_Template             (Node_Id);
 161 extern void *Clobber_Get_Next           (void);
 162 extern void Clobber_Setup               (Node_Id);
 163 extern Boolean Is_Asm_Volatile          (Node_Id);
 164 extern void Next_Asm_Input              (void);
 165 extern void Next_Asm_Output             (void);
 166 extern void Setup_Asm_Inputs            (Node_Id);
 167 extern void Setup_Asm_Outputs           (Node_Id);
 168
 169 /* exp_dbug:  */
 170
 171 #define Get_Encoded_Name        exp_dbug__get_encoded_name
 172 #define Get_External_Name       exp_dbug__get_external_name
 173 #define Get_Variant_Encoding    exp_dbug__get_variant_encoding
 174
 175 extern void Get_Encoded_Name            (Entity_Id);
 176 extern void Get_External_Name           (Entity_Id, Boolean, String_Pointer);
 177 extern void Get_Variant_Encoding        (Entity_Id);
 178
 179 /* exp_tss: */
 180
 181 #define Is_Init_Proc    exp_tss__is_init_proc
 182
 183 extern Boolean Is_Init_Proc             (Entity_Id);
 184
 185 /* exp_util: */
 186
 187 #define Find_Interface_Tag              exp_util__find_interface_tag
 188 #define Is_Fully_Repped_Tagged_Type     exp_util__is_fully_repped_tagged_type
 189 #define Is_Related_To_Func_Return       exp_util__is_related_to_func_return
 190 #define Is_Secondary_Stack_Thunk        exp_util__is_secondary_stack_thunk
 191 #define Thunk_Target                    exp_util__thunk_target
 192
 193 extern Entity_Id Find_Interface_Tag             (Entity_Id, Entity_Id);
 194 extern Boolean Is_Fully_Repped_Tagged_Type      (Entity_Id);
 195 extern Boolean Is_Related_To_Func_Return        (Entity_Id);
 196 extern Boolean Is_Secondary_Stack_Thunk         (Entity_Id);
 197 extern Entity_Id Thunk_Target                   (Entity_Id);
 198
 199 /* lib: */
 200
 201 #define Cunit                           lib__cunit
 202 #define Ident_String                    lib__ident_string
 203 #define In_Extended_Main_Code_Unit      lib__in_extended_main_code_unit
 204
 205 extern Node_Id Cunit                            (Unit_Number_Type);
 206 extern Node_Id Ident_String                     (Unit_Number_Type);
 207 extern Boolean In_Extended_Main_Code_Unit       (Entity_Id);
 208
 209 /* opt: */
 210
 211 #define Ada_Version                     opt__ada_version
 212 #define Back_End_Inlining               opt__back_end_inlining
 213 #define Debug_Generated_Code            opt__debug_generated_code
 214 #define Enable_128bit_Types             opt__enable_128bit_types
 215 #define Exception_Extra_Info            opt__exception_extra_info
 216 #define Exception_Locations_Suppressed  opt__exception_locations_suppressed
 217 #define Generate_SCO_Instance_Table     opt__generate_sco_instance_table
 218 #define GNAT_Mode                       opt__gnat_mode
 219 #define List_Representation_Info        opt__list_representation_info
 220 #define No_Strict_Aliasing_CP           opt__no_strict_aliasing
 221 #define Suppress_Checks                 opt__suppress_checks
 222 #define Unnest_Subprogram_Mode          opt__unnest_subprogram_mode
 223
 224 typedef enum {
 225   Ada_83, Ada_95, Ada_2005, Ada_2012, Ada_2022
 226 } Ada_Version_Type;
 227 // Ada_With_Core_Extensions and Ada_With_All_Extensions (see opt.ads) are not
 228 // used on the C side for now. If we decide to use them, we should import
 229 // All_Extensions_Allowed and Core_Extensions_Allowed functions.
 230
 231 extern Ada_Version_Type Ada_Version;
 232 extern Boolean Back_End_Inlining;
 233 extern Boolean Debug_Generated_Code;
 234 extern Boolean Enable_128bit_Types;
 235 extern Boolean Exception_Extra_Info;
 236 extern Boolean Exception_Locations_Suppressed;
 237 extern Boolean Generate_SCO_Instance_Table;
 238 extern Boolean GNAT_Mode;
 239 extern Int List_Representation_Info;
 240 extern Boolean No_Strict_Aliasing_CP;
 241 extern Boolean Suppress_Checks;
 242 extern Boolean Unnest_Subprogram_Mode;
 243
 244 #define ZCX_Exceptions          opt__zcx_exceptions
 245 #define SJLJ_Exceptions         opt__sjlj_exceptions
 246
 247 extern Boolean ZCX_Exceptions           (void);
 248 extern Boolean SJLJ_Exceptions          (void);
 249
 250 /* restrict: */
 251
 252 #define Check_Elaboration_Code_Allowed  \
 253   restrict__check_elaboration_code_allowed
 254 #define Check_Implicit_Dynamic_Code_Allowed     \
 255   restrict__check_implicit_dynamic_code_allowed
 256 #define Check_No_Implicit_Heap_Alloc    \
 257   restrict__check_no_implicit_heap_alloc
 258 #define Check_No_Implicit_Protected_Alloc       \
 259   restrict__check_no_implicit_protected_alloc
 260 #define Check_No_Implicit_Task_Alloc    \
 261   restrict__check_no_implicit_task_alloc
 262 #define Check_Restriction_No_Dependence_On_System \
 263   restrict__check_restriction_no_dependence_on_system
 264 #define No_Exception_Handlers_Set       \
 265   restrict__no_exception_handlers_set
 266 #define No_Exception_Propagation_Active \
 267   restrict__no_exception_propagation_active
 268
 269 extern void Check_Elaboration_Code_Allowed      (Node_Id);
 270 extern void Check_Implicit_Dynamic_Code_Allowed (Node_Id);
 271 extern void Check_No_Implicit_Heap_Alloc        (Node_Id);
 272 extern void Check_No_Implicit_Protected_Alloc   (Node_Id);
 273 extern void Check_No_Implicit_Task_Alloc        (Node_Id);
 274 extern void Check_Restriction_No_Dependence_On_System (Name_Id, Node_Id);
 275 extern Boolean No_Exception_Handlers_Set        (void);
 276 extern Boolean No_Exception_Propagation_Active  (void);
 277
 278 /* sem_aggr:  */
 279
 280 #define Is_Single_Aggregate     sem_aggr__is_single_aggregate
 281
 282 extern Boolean Is_Single_Aggregate      (Node_Id);
 283
 284 /* sem_aux:  */
 285
 286 #define Ancestor_Subtype                sem_aux__ancestor_subtype
 287 #define Constant_Value                  sem_aux__constant_value
 288 #define First_Discriminant              sem_aux__first_discriminant
 289 #define First_Stored_Discriminant       sem_aux__first_stored_discriminant
 290 #define First_Subtype                   sem_aux__first_subtype
 291 #define Is_By_Reference_Type            sem_aux__is_by_reference_type
 292 #define Is_Derived_Type                 sem_aux__is_derived_type
 293
 294 extern Entity_Id Ancestor_Subtype               (Entity_Id);
 295 extern Node_Id Constant_Value                   (Entity_Id);
 296 extern Entity_Id First_Discriminant             (Entity_Id);
 297 extern Entity_Id First_Stored_Discriminant      (Entity_Id);
 298 extern Entity_Id First_Subtype                  (Entity_Id);
 299 extern Boolean Is_By_Reference_Type             (Entity_Id);
 300 extern Boolean Is_Derived_Type                  (Entity_Id);
 301
 302 /* sem_eval: */
 303
 304 #define Compile_Time_Known_Value        sem_eval__compile_time_known_value
 305 #define Is_Null_Range                   sem_eval__is_null_range
 306
 307 extern Boolean Compile_Time_Known_Value (Node_Id);
 308 extern Boolean Is_Null_Range            (Node_Id, Node_Id);
 309
 310 /* sem_util: */
 311
 312 #define Defining_Entity                 sem_util__defining_entity
 313 #define First_Actual                    sem_util__first_actual
 314 #define Has_Storage_Model_Type_Aspect   sem_util__storage_model_support__has_storage_model_type_aspect
 315 #define Has_Designated_Storage_Model_Aspect sem_util__storage_model_support__has_designated_storage_model_aspect
 316 #define Is_Expression_Function          sem_util__is_expression_function
 317 #define Is_Variable_Size_Record         sem_util__is_variable_size_record
 318 #define Needs_Secondary_Stack           sem_util__needs_secondary_stack
 319 #define Next_Actual                     sem_util__next_actual
 320 #define Storage_Model_Object            sem_util__storage_model_support__storage_model_object
 321 #define Storage_Model_Copy_From         sem_util__storage_model_support__storage_model_copy_from
 322 #define Storage_Model_Copy_To           sem_util__storage_model_support__storage_model_copy_to
 323
 324 extern Entity_Id Defining_Entity                (Node_Id);
 325 extern Node_Id First_Actual                     (Node_Id);
 326 extern Boolean Has_Storage_Model_Type_Aspect    (Entity_Id);
 327 extern Boolean Has_Designated_Storage_Model_Aspect (Entity_Id);
 328 extern Boolean Is_Expression_Function           (Entity_Id);
 329 extern Boolean Is_Variable_Size_Record          (Entity_Id);
 330 extern Boolean Needs_Secondary_Stack            (Entity_Id);
 331 extern Node_Id Next_Actual                      (Node_Id);
 332 extern Entity_Id Storage_Model_Object           (Entity_Id);
 333 extern Entity_Id Storage_Model_Copy_From        (Entity_Id);
 334 extern Entity_Id Storage_Model_Copy_To          (Entity_Id);
 335
 336 /* sinfo: */
 337
 338 #define End_Location                    sinfo__utils__end_location
 339 #define Set_Has_No_Elaboration_Code     sinfo__nodes__set_has_no_elaboration_code
 340 #define Set_Present_Expr                sinfo__nodes__set_present_expr
 341
 342 extern Source_Ptr End_Location          (Node_Id);
 343 extern void Set_Has_No_Elaboration_Code (Node_Id, Boolean);
 344 extern void Set_Present_Expr            (Node_Id, Uint);
 345
 346 /* sinput: */
 347
 348 #define Debug_Source_Name       sinput__debug_source_name
 349 #define Get_Column_Number       sinput__get_column_number
 350 #define Get_Logical_Line_Number sinput__get_logical_line_number
 351 #define Get_Source_File_Index   sinput__get_source_file_index
 352
 353 extern File_Name_Type Debug_Source_Name         (Source_File_Index);
 354 extern Column_Number_Type Get_Column_Number     (Source_Ptr);
 355 extern Line_Number_Type Get_Logical_Line_Number (Source_Ptr);
 356 extern Source_File_Index Get_Source_File_Index  (Source_Ptr);
 357
 358 /* targparm: */
 359
 360 #define Machine_Overflows_On_Target     \
 361   targparm__machine_overflows_on_target
 362 #define Signed_Zeros_On_Target  \
 363   targparm__signed_zeros_on_target
 364 #define Stack_Check_Limits_On_Target    \
 365   targparm__stack_check_limits_on_target
 366 #define Stack_Check_Probes_On_Target    \
 367   targparm__stack_check_probes_on_target
 368
 369 extern Boolean Machine_Overflows_On_Target;
 370 extern Boolean Signed_Zeros_On_Target;
 371 extern Boolean Stack_Check_Limits_On_Target;
 372 extern Boolean Stack_Check_Probes_On_Target;
 373
 374 /* warnsw: */
 375
 376 #define Get_Warn_On_Questionable_Layout warnsw__get_warn_on_questionable_layout
 377
 378 extern Boolean Get_Warn_On_Questionable_Layout (void);
 379
 380 // The following corresponds to Ada code in Einfo.Utils.
 381
 382 typedef Boolean   B;
 383 typedef Entity_Id E;
 384 typedef Node_Id   N;
 385
 386 #define Address_Clause einfo__utils__address_clause
 387 extern N Address_Clause (E Id);
 388
 389 #define Alignment_Clause einfo__utils__alignment_clause
 390 extern N Alignment_Clause (E Id);
 391
 392 #define Base_Type einfo__utils__base_type
 393 extern E Base_Type (E Id);
 394
 395 #define Declaration_Node einfo__utils__declaration_node
 396 extern N Declaration_Node (E Id);
 397
 398 #define Designated_Type einfo__utils__designated_type
 399 extern E Designated_Type (E Id);
 400
 401 #define First_Formal einfo__utils__first_formal
 402 extern E First_Formal (E Id);
 403
 404 #define First_Formal_With_Extras einfo__utils__first_formal_with_extras
 405 extern E First_Formal_With_Extras (E Id);
 406
 407 #define Has_Foreign_Convention einfo__utils__has_foreign_convention
 408 extern B Has_Foreign_Convention (E Id);
 409
 410 #define Implementation_Base_Type einfo__utils__implementation_base_type
 411 extern E Implementation_Base_Type (E Id);
 412
 413 #define Is_Boolean_Type einfo__utils__is_boolean_type
 414 extern B Is_Boolean_Type (E Id);
 415
 416 #define Next_Discriminant einfo__utils__next_discriminant
 417 extern E Next_Discriminant (E Id);
 418
 419 #define Next_Formal einfo__utils__next_formal
 420 extern E Next_Formal (E Id);
 421
 422 #define Next_Formal_With_Extras einfo__utils__next_formal_with_extras
 423 extern E Next_Formal_With_Extras (E Id);
 424
 425 #define Number_Dimensions einfo__utils__number_dimensions
 426 extern Pos Number_Dimensions (E Id);
 427
 428 #define Object_Size_Clause einfo__utils__object_size_clause
 429 extern N Object_Size_Clause (E Id);
 430
 431 #define Root_Type einfo__utils__root_type
 432 extern E Root_Type (E Id);
 433
 434 #define Size_Clause einfo__utils__size_clause
 435 extern N Size_Clause (E Id);
 436
 437 #define Type_High_Bound einfo__utils__type_high_bound
 438 extern N Type_High_Bound (E Id);
 439
 440 #define Type_Low_Bound einfo__utils__type_low_bound
 441 extern N Type_Low_Bound (E Id);
 442
 443 #define Underlying_Type einfo__utils__underlying_type
 444 extern E Underlying_Type (E Id);
 445
 446 #define Known_Alignment einfo__utils__known_alignment
 447 extern B Known_Alignment (Entity_Id E);
 448
 449 #define Known_Component_Size einfo__utils__known_component_size
 450 extern B Known_Component_Size (Entity_Id E);
 451
 452 #define Known_Esize einfo__utils__known_esize
 453 extern B Known_Esize (Entity_Id E);
 454
 455 #define Known_Normalized_Position einfo__utils__known_normalized_position
 456 extern B Known_Normalized_Position (Entity_Id E);
 457
 458 #define Known_RM_Size einfo__utils__known_rm_size
 459 extern B Known_RM_Size (Entity_Id E);
 460
 461 #define Copy_Alignment einfo__utils__copy_alignment
 462 extern B Copy_Alignment(Entity_Id To, Entity_Id From);
 463
 464 #define Copy_Esize einfo__utils__copy_esize
 465 extern B Copy_Esize(Entity_Id To, Entity_Id From);
 466
 467 #define Copy_RM_Size einfo__utils__copy_rm_size
 468 extern B Copy_RM_Size(Entity_Id To, Entity_Id From);
 469
 470 #define Is_Discrete_Or_Fixed_Point_Type einfo__utils__is_discrete_or_fixed_point_type
 471 extern B Is_Discrete_Or_Fixed_Point_Type (E Id);
 472
 473 #define Is_Floating_Point_Type einfo__utils__is_floating_point_type
 474 extern B Is_Floating_Point_Type (E Id);
 475
 476 #define Is_Record_Type einfo__utils__is_record_type
 477 extern B Is_Record_Type (E Id);
 478
 479 #define Is_Full_Access einfo__utils__is_full_access
 480 extern B Is_Full_Access (E Id);
 481
 482 #define Next_Index einfo__utils__next_index
 483 extern Node_Id Next_Index (Node_Id Id);
 484
 485 #define Next_Literal einfo__utils__next_literal
 486 extern E Next_Literal (E Id);
 487
 488 #define Next_Stored_Discriminant einfo__utils__next_stored_discriminant
 489 extern E Next_Stored_Discriminant (E Id);
 490
 491 // The following is needed because Convention in Sem_Util is a renaming
 492 // of Basic_Convention.
 493
 494 static inline Convention_Id
 495 Convention (N Node)
 496 {
 497   extern Byte einfo__entities__basic_convention (N Node);
 498   return (Convention_Id) einfo__entities__basic_convention (Node);
 499 }
 500
 501 // See comments regarding Entity_Or_Associated_Node in Sinfo.Utils.
 502
 503 #define Entity sinfo__nodes__entity_or_associated_node
 504 extern Entity_Id Entity (N Node);
 505
 506 // See comments regarding Renamed_Or_Alias in Einfo.Utils
 507
 508 #define Alias einfo__entities__renamed_or_alias
 509 extern Node_Id Alias (N Node);
 510
 511 #define Renamed_Entity einfo__entities__renamed_or_alias
 512 extern Node_Id Renamed_Entity (N Node);
 513
 514 #define Renamed_Object einfo__entities__renamed_or_alias
 515 extern Node_Id Renamed_Object (N Node);
 516
 517 #ifdef __cplusplus
 518 }
 519 #endif