gcc/d/ChangeLog-2023

   1 2023-12-16  Andrew Carlotti  <andrew.carlotti@arm.com>
   2
   3         * d-attribs.cc (attr_target_exclusions): Make
   4         target/target_clones exclusion target-dependent.
   5         (attr_target_clones_exclusions): Ditto.
   6
   7 2023-12-11  Iain Buclaw  <ibuclaw@gdcproject.org>
   8
   9         * Make-lang.in (D_FRONTEND_OBJS): Rename d/common-string.o to
  10         d/common-smallbuffer.o.
  11         * dmd/MERGE: Merge upstream dmd 2bbf64907c.
  12         * dmd/VERSION: Bump version to v2.106.0.
  13         * modules.cc (layout_moduleinfo_fields): Update for new front-end
  14         interface.
  15         (layout_moduleinfo): Likewise.
  16
  17 2023-12-05  Richard Sandiford  <richard.sandiford@arm.com>
  18
  19         * d-attribs.cc (d_langhook_common_attribute_table): Add extra braces
  20         to work around PR 16333 in older compilers.
  21         (d_langhook_gnu_attribute_table): Likewise.
  22
  23 2023-12-02  Richard Sandiford  <richard.sandiford@arm.com>
  24
  25         * d-tree.h (d_langhook_attribute_table): Replace with...
  26         (d_langhook_gnu_attribute_table): ...this.
  27         (d_langhook_common_attribute_table): Change type to
  28         scoped_attribute_specs.
  29         * d-attribs.cc (d_langhook_common_attribute_table): Change type to
  30         scoped_attribute_specs, using...
  31         (d_langhook_common_attributes): ...this as the underlying array.
  32         (d_langhook_attribute_table): Replace with...
  33         (d_langhook_gnu_attributes, d_langhook_gnu_attribute_table): ...these
  34         new globals.
  35         (uda_attribute_p): Update accordingly, and update for new
  36         targetm.attribute_table type.
  37         * d-lang.cc (d_langhook_attribute_table): New global.
  38         (LANG_HOOKS_COMMON_ATTRIBUTE_TABLE): Delete.
  39
  40 2023-11-21  Iain Buclaw  <ibuclaw@gdcproject.org>
  41
  42         * dmd/MERGE: Merge upstream dmd ff57fec515.
  43         * dmd/VERSION: Bump version to v2.106.0-rc.1.
  44         * expr.cc (ExprVisitor::visit (CatAssignExp *)): Update for new
  45         front-end interface.
  46         (ExprVisitor::visit (NewExp *)): Likewise.
  47         * runtime.def (NEWARRAYMTX): Remove.
  48         (NEWARRAYMITX): Remove.
  49
  50 2023-11-21  Iain Buclaw  <ibuclaw@gdcproject.org>
  51
  52         * dmd/MERGE: Merge upstream dmd 65a3da148c.
  53
  54 2023-11-02  Iain Buclaw  <ibuclaw@gdcproject.org>
  55
  56         * dmd/MERGE: Merge upstream dmd 643b1261bb.
  57         * d-attribs.cc (build_attributes): Update for new front-end interface.
  58         * d-lang.cc (d_post_options): Likewise.
  59         * decl.cc (layout_class_initializer): Likewise.
  60
  61 2023-10-31  Iain Buclaw  <ibuclaw@gdcproject.org>
  62
  63         * expr.cc (ExprVisitor::visit (NewExp *)): Remove unused assignments.
  64
  65 2023-10-29  Iain Buclaw  <ibuclaw@gdcproject.org>
  66
  67         PR d/110712
  68         * d-codegen.cc (d_build_call): Update call to convert_for_argument.
  69         * d-convert.cc (is_valist_parameter_type): New function.
  70         (check_valist_conversion): New function.
  71         (convert_for_assignment): Update signature.  Add check whether
  72         assigning va_list is permissible.
  73         (convert_for_argument): Likewise.
  74         * d-tree.h (convert_for_assignment): Update signature.
  75         (convert_for_argument): Likewise.
  76         * expr.cc (ExprVisitor::visit (AssignExp *)): Update call to
  77         convert_for_assignment.
  78
  79 2023-10-29  Iain Buclaw  <ibuclaw@gdcproject.org>
  80
  81         * dmd/MERGE: Merge upstream dmd e48bc0987d.
  82         * expr.cc (ExprVisitor::visit (NewExp *)): Update for new front-end
  83         interface.
  84         * runtime.def (NEWARRAYT): Remove.
  85         (NEWARRAYIT): Remove.
  86
  87 2023-10-28  Iain Buclaw  <ibuclaw@gdcproject.org>
  88
  89         PR d/112270
  90         * d-builtins.cc (d_build_d_type_nodes): Initialize d_bool_false_node,
  91         d_bool_true_node.
  92         * d-codegen.cc (build_array_struct_comparison): Use d_bool_false_node
  93         instead of boolean_false_node.
  94         * d-convert.cc (d_truthvalue_conversion): Use d_bool_false_node and
  95         d_bool_true_node instead of boolean_false_node and boolean_true_node.
  96         * d-tree.h (enum d_tree_index): Add DTI_BOOL_FALSE and DTI_BOOL_TRUE.
  97         (d_bool_false_node): New macro.
  98         (d_bool_true_node): New macro.
  99         * modules.cc (build_dso_cdtor_fn): Use d_bool_false_node and
 100         d_bool_true_node instead of boolean_false_node and boolean_true_node.
 101         (register_moduleinfo): Use d_bool_type instead of boolean_type_node.
 102
 103 2023-10-28  Iain Buclaw  <ibuclaw@gdcproject.org>
 104
 105         * d-codegen.cc (call_side_effect_free_p): New function.
 106         * d-tree.h (CALL_EXPR_WARN_IF_UNUSED): New macro.
 107         (call_side_effect_free_p): New prototype.
 108         * expr.cc (ExprVisitor::visit (CallExp *)): Set
 109         CALL_EXPR_WARN_IF_UNUSED on matched call expressions.
 110         (ExprVisitor::visit (NewExp *)): Don't dereference the result of an
 111         allocation call here.
 112         * toir.cc (add_stmt): Emit warning when call expression added to
 113         statement list without being used.
 114
 115 2023-10-22  Iain Buclaw  <ibuclaw@gdcproject.org>
 116
 117         * dmd/MERGE: Merge upstream dmd f4be7f6f7b.
 118         * Make-lang.in (D_FRONTEND_OBJS): Rename d/root-rootobject.o to
 119         d/rootobject.o.
 120
 121 2023-10-17  Iain Buclaw  <ibuclaw@gdcproject.org>
 122
 123         * d-tree.h (intrinsic_code): Update define for DEF_D_INTRINSIC.
 124         (maybe_reject_intrinsic): New prototype.
 125         * expr.cc (ExprVisitor::visit (SymOffExp *)): Call
 126         maybe_reject_intrinsic.
 127         * intrinsics.cc (intrinsic_decl): Add fallback field.
 128         (intrinsic_decls): Update define for DEF_D_INTRINSIC.
 129         (maybe_reject_intrinsic): New function.
 130         * intrinsics.def (DEF_D_LIB_BUILTIN): Update.
 131         (DEF_CTFE_BUILTIN): Update.
 132         (INTRINSIC_BSF): Declare as library builtin.
 133         (INTRINSIC_BSR): Likewise.
 134         (INTRINSIC_BT): Likewise.
 135         (INTRINSIC_BSF64): Likewise.
 136         (INTRINSIC_BSR64): Likewise.
 137         (INTRINSIC_BT64): Likewise.
 138         (INTRINSIC_POPCNT32): Likewise.
 139         (INTRINSIC_POPCNT64): Likewise.
 140         (INTRINSIC_ROL): Likewise.
 141         (INTRINSIC_ROL_TIARG): Likewise.
 142         (INTRINSIC_ROR): Likewise.
 143         (INTRINSIC_ROR_TIARG): Likewise.
 144         (INTRINSIC_ADDS): Likewise.
 145         (INTRINSIC_ADDSL): Likewise.
 146         (INTRINSIC_ADDU): Likewise.
 147         (INTRINSIC_ADDUL): Likewise.
 148         (INTRINSIC_SUBS): Likewise.
 149         (INTRINSIC_SUBSL): Likewise.
 150         (INTRINSIC_SUBU): Likewise.
 151         (INTRINSIC_SUBUL): Likewise.
 152         (INTRINSIC_MULS): Likewise.
 153         (INTRINSIC_MULSL): Likewise.
 154         (INTRINSIC_MULU): Likewise.
 155         (INTRINSIC_MULUI): Likewise.
 156         (INTRINSIC_MULUL): Likewise.
 157         (INTRINSIC_NEGS): Likewise.
 158         (INTRINSIC_NEGSL): Likewise.
 159         (INTRINSIC_TOPRECF): Likewise.
 160         (INTRINSIC_TOPREC): Likewise.
 161         (INTRINSIC_TOPRECL): Likewise.
 162
 163 2023-10-16  Iain Buclaw  <ibuclaw@gdcproject.org>
 164
 165         * dmd/MERGE: Merge upstream dmd 4c18eed967.
 166         * d-diagnostic.cc (verrorReport): Update for new front-end interface.
 167         (verrorReportSupplemental): Likewise.
 168         * d-lang.cc (d_init_options): Likewise.
 169         (d_handle_option): Likewise.
 170         (d_post_options): Likewise.
 171         (d_parse_file): Likewise.
 172         * decl.cc (get_symbol_decl): Likewise.
 173
 174 2023-10-15  Iain Buclaw  <ibuclaw@gdcproject.org>
 175
 176         * dmd/MERGE: Merge upstream dmd f9efc98fd7.
 177         * dmd/VERSION: Bump version to v2.105.2.
 178         * d-builtins.cc (build_frontend_type): Update for new front-end
 179         interface.
 180         * d-diagnostic.cc (verrorReport): Don't emit tips when error gagging
 181         is turned on.
 182         * d-lang.cc (d_handle_option): Remove obsolete parameter.
 183         (d_post_options): Likewise.
 184         (d_read_ddoc_files): New function.
 185         (d_generate_ddoc_file): New function.
 186         (d_parse_file): Update for new front-end interface.
 187         * expr.cc (ExprVisitor::visit (AssocArrayLiteralExp *)): Check for new
 188         front-end lowering of static associative arrays.
 189
 190 2023-10-14  Iain Buclaw  <ibuclaw@gdcproject.org>
 191
 192         PR d/111537
 193         * expr.cc (ExprVisitor::visit (StringExp *)): Include null terminator
 194         in STRING_CST string.
 195         * modules.cc (get_compiler_dso_type): Generate ModuleInfo** type for
 196         the minfo fields.
 197
 198 2023-10-14  Iain Buclaw  <ibuclaw@gdcproject.org>
 199
 200         * d-lang.cc (d_write_file): New function.
 201         (d_parse_file): Reduce code duplication.
 202
 203 2023-10-03  David Malcolm  <dmalcolm@redhat.com>
 204
 205         * d-diagnostic.cc (d_diagnostic_report_diagnostic): Use text_info
 206         ctor.
 207
 208 2023-09-23  Iain Buclaw  <ibuclaw@gdcproject.org>
 209
 210         * dmd/MERGE: Merge upstream dmd 4574d1728d.
 211         * dmd/VERSION: Bump version to v2.105.0.
 212         * d-diagnostic.cc (verror): Remove.
 213         (verrorSupplemental): Remove.
 214         (vwarning): Remove.
 215         (vwarningSupplemental): Remove.
 216         (vdeprecation): Remove.
 217         (vdeprecationSupplemental): Remove.
 218         (vmessage): Remove.
 219         (vtip): Remove.
 220         (verrorReport): New function.
 221         (verrorReportSupplemental): New function.
 222         * d-lang.cc (d_parse_file): Update for new front-end interface.
 223         * decl.cc (d_mangle_decl): Update for new front-end interface.
 224         * intrinsics.cc (maybe_set_intrinsic): Update for new front-end
 225         interface.
 226
 227 2023-08-20  Iain Buclaw  <ibuclaw@gdcproject.org>
 228
 229         * dmd/MERGE: Merge upstream dmd 26f049fb26.
 230         * dmd/VERSION: Bump version to v2.105.0-beta.1.
 231         * d-codegen.cc (get_frameinfo): Check useGC in condition.
 232         * d-lang.cc (d_handle_option): Set obsolete parameter when compiling
 233         with -Wall.
 234         (d_post_options): Set useGC to false when compiling with
 235         -fno-druntime.  Propagate obsolete flag to compileEnv.
 236         * expr.cc (ExprVisitor::visit (CatExp *)): Check useGC in condition.
 237
 238 2023-07-10  Iain Buclaw  <ibuclaw@gdcproject.org>
 239
 240         * dmd/MERGE: Merge upstream dmd a88e1335f7.
 241         * dmd/VERSION: Bump version to v2.104.1.
 242
 243 2023-07-10  Iain Buclaw  <ibuclaw@gdcproject.org>
 244
 245         * dmd/MERGE: Merge upstream dmd 17ccd12af3.
 246         * dmd/VERSION: Bump version to v2.104.0.
 247         * Make-lang.in (D_FRONTEND_OBJS): Rename d/apply.o to
 248         d/postordervisitor.o.
 249         * d-codegen.cc (make_location_t): Update for new front-end interface.
 250         (build_filename_from_loc): Likewise.
 251         (build_assert_call): Likewise.
 252         (build_array_bounds_call): Likewise.
 253         (build_bounds_index_condition): Likewise.
 254         (build_bounds_slice_condition): Likewise.
 255         (build_frame_type): Likewise.
 256         (get_frameinfo): Likewise.
 257         * d-diagnostic.cc (d_diagnostic_report_diagnostic): Likewise.
 258         * decl.cc (build_decl_tree): Likewise.
 259         (start_function): Likewise.
 260         * expr.cc (ExprVisitor::visit (NewExp *)): Replace code generation of
 261         `new pointer' with front-end lowering.
 262         * runtime.def (NEWITEMT): Remove.
 263         (NEWITEMIT): Remove.
 264         * toir.cc (IRVisitor::visit (LabelStatement *)): Update for new
 265         front-end interface.
 266         * typeinfo.cc (check_typeinfo_type): Likewise.
 267
 268 2023-07-09  Iain Buclaw  <ibuclaw@gdcproject.org>
 269
 270         * dmd/MERGE: Merge upstream dmd 28a3b24c2e.
 271         * dmd/VERSION: Bump version to v2.104.0-beta.1.
 272         * d-codegen.cc (build_bounds_slice_condition): Update for new
 273         front-end interface.
 274         * d-lang.cc (d_init_options): Likewise.
 275         (d_handle_option): Likewise.
 276         (d_post_options): Initialize global.compileEnv.
 277         * expr.cc (ExprVisitor::visit (CatExp *)): Replace code generation
 278         with new front-end lowering.
 279         (ExprVisitor::visit (LoweredAssignExp *)): New method.
 280         (ExprVisitor::visit (StructLiteralExp *)): Don't generate static
 281         initializer symbols for structs defined in C sources.
 282         * runtime.def (ARRAYCATT): Remove.
 283         (ARRAYCATNTX): Remove.
 284
 285 2023-07-07  Iain Buclaw  <ibuclaw@gdcproject.org>
 286
 287         PR d/108842
 288         * decl.cc (DeclVisitor::visit (VarDeclaration *)): Only emit scalar
 289         manifest constants.
 290         (get_symbol_decl): Don't generate CONST_DECL for non-scalar manifest
 291         constants.
 292         * imports.cc (ImportVisitor::visit (VarDeclaration *)): New method.
 293
 294 2023-07-02  Iain Buclaw  <ibuclaw@gdcproject.org>
 295
 296         PR d/110516
 297         * intrinsics.cc (expand_volatile_load): Set TREE_SIDE_EFFECTS on the
 298         expanded expression.
 299         (expand_volatile_store): Likewise.
 300
 301 2023-07-01  Iain Buclaw  <ibuclaw@gdcproject.org>
 302
 303         PR d/110514
 304         * decl.cc (get_symbol_decl): Set TREE_READONLY on certain kinds of
 305         const and immutable variables.
 306         * expr.cc (ExprVisitor::visit (ArrayLiteralExp *)): Set TREE_READONLY
 307         on immutable dynamic array literals.
 308
 309 2023-07-01  Iain Buclaw  <ibuclaw@gdcproject.org>
 310
 311         PR d/110471
 312         * d-builtins.cc (d_init_versions): Predefine D_ModuleInfo,
 313         D_Exceptions, and D_TypeInfo only if feature is enabled.
 314         * lang.opt: Add -fexceptions.
 315
 316 2023-06-28  Iain Buclaw  <ibuclaw@gdcproject.org>
 317
 318         PR d/106977
 319         PR target/110406
 320         * types.cc (finish_aggregate_mode): New function.
 321         (finish_incomplete_fields): Call finish_aggregate_mode.
 322         (finish_aggregate_type): Replace call to compute_record_mode with
 323         finish_aggregate_mode.
 324
 325 2023-06-28  Iain Buclaw  <ibuclaw@gdcproject.org>
 326
 327         PR d/110193
 328         * types.cc (d_signed_or_unsigned_type): Handle being called with any
 329         vector or non-integral type.
 330
 331 2023-06-26  Iain Buclaw  <ibuclaw@gdcproject.org>
 332
 333         PR d/110359
 334         * d-convert.cc (convert_for_rvalue): Only apply the @safe boolean
 335         conversion to boolean fields of a union.
 336         (convert_for_condition): Call convert_for_rvalue in the default case.
 337
 338 2023-06-25  Iain Buclaw  <ibuclaw@gdcproject.org>
 339
 340         * dmd/MERGE: Merge upstream dmd a45f4e9f43.
 341         * dmd/VERSION: Bump version to v2.103.1.
 342
 343 2023-06-15  Marek Polacek  <polacek@redhat.com>
 344
 345         * Make-lang.in: Remove NO_PIE_CFLAGS.
 346
 347 2023-06-05  Iain Buclaw  <ibuclaw@gdcproject.org>
 348
 349         * gdc.texi (Warnings): Document -Wextra and -Wmismatched-special-enum.
 350         * implement-d.texi (Special Enums): Add reference to warning option
 351         -Wmismatched-special-enum.
 352         * lang.opt: Add -Wextra and -Wmismatched-special-enum.
 353         * types.cc (TypeVisitor::visit (TypeEnum *)): Warn when declared
 354         special enum size mismatches its intrinsic type.
 355
 356 2023-05-18  Bernhard Reutner-Fischer  <aldot@gcc.gnu.org>
 357
 358         * d-codegen.cc (underlying_complex_expr): Use _P defines from tree.h.
 359         * d-convert.cc (convert): Ditto.
 360         (convert_for_rvalue): Ditto.
 361
 362 2023-03-17  Iain Buclaw  <ibuclaw@gdcproject.org>
 363
 364         * dmd/MERGE: Merge upstream dmd 5f7552bb28.
 365         * dmd/VERSION: Bump version to v2.103.0-rc.1.
 366
 367 2023-03-16  Iain Buclaw  <ibuclaw@gdcproject.org>
 368
 369         * dmd/MERGE: Merge upstream dmd 4ca4140e58.
 370         * dmd/VERSION: Bump version to v2.103.0-beta.1.
 371         * Make-lang.in (D_FRONTEND_OBJS): Add d/errorsink.o.
 372         * d-ctfloat.cc (CTFloat::sprint): Update signature for new front-end
 373         interface.
 374         * d-frontend.cc (getTypeInfoType): Likewise.
 375         * d-lang.cc (d_handle_option): Remove handling of -fpreview=dip25 and
 376         -frevert=dip25.
 377         (d_post_options): Remove enabling of sealed references language
 378         feature when scoped pointers is enabled.
 379         * d-tree.h (create_typeinfo): Update signature.
 380         * decl.cc (DeclVisitor::finish_vtable): Update for new front-end
 381         interface.
 382         (DeclVisitor::visit (VarDeclaration *)): Likewise.
 383         (DeclVisitor::visit (FuncDeclaration *)): Check skipCodegen to see if
 384         front-end explicitly requested not to generate code.
 385         * expr.cc (ExprVisitor::visit (NewExp *)): Update for new front-end
 386         interface.
 387         * lang.opt (fpreview=dip25): Remove.
 388         (frevert=dip25): Remove.
 389         * modules.cc (layout_moduleinfo_fields): Update for new front-end
 390         interface.
 391         (layout_moduleinfo): Likewise.
 392         * runtime.def (NEWCLASS): Remove.
 393         * toir.cc (IRVisitor::visit (IfStatement *)): Don't generate IR for if
 394         statement list when condition is `__ctfe'.
 395         * typeinfo.cc (create_typeinfo): Add generate parameter.
 396         * types.cc (layout_aggregate_members): Update for new front-end
 397         interface.
 398
 399 2023-03-16  Iain Buclaw  <ibuclaw@gdcproject.org>
 400
 401         PR d/109144
 402         * d-codegen.cc (build_frame_type): Set frame field and type alignment.
 403
 404 2023-03-14  Iain Buclaw  <ibuclaw@gdcproject.org>
 405
 406         PR d/109108
 407         * decl.cc (function_defined_in_root_p): Remove.
 408         (get_symbol_decl): Set DECL_LAMBDA_FUNCTION_P on function literals.
 409         (start_function): Unconditionally unset DECL_EXTERNAL
 410         (set_linkage_for_decl): Give lambda functions one-only linkage.
 411
 412 2023-03-13  Iain Buclaw  <ibuclaw@gdcproject.org>
 413
 414         * decl.cc (finish_thunk): Unset DECL_EXTERNAL on thunk.
 415         (make_thunk): Set DECL_EXTERNAL on thunk, don't call build_decl_tree.
 416         (finish_function): Call finish_thunk on forward referenced thunks.
 417
 418 2023-03-13  Iain Buclaw  <ibuclaw@gdcproject.org>
 419
 420         * decl.cc (get_fndecl_result): New function.
 421         (get_fndecl_arguments): New function.
 422         (DeclVisitor::visit (FuncDeclaration *)): Adjust to call
 423         get_fndecl_arguments.
 424         (make_thunk): Adjust to call get_fndecl_arguments and
 425         get_fndecl_result.
 426         (start_function): Adjust to call get_fndecl_result.
 427
 428 2023-03-03  Iain Buclaw  <ibuclaw@gdcproject.org>
 429
 430         PR d/108763
 431         * implement-d.texi (Missing Features): Document that TypeInfo-based
 432         va_arg is not implemented.
 433
 434 2023-03-03  Iain Buclaw  <ibuclaw@gdcproject.org>
 435
 436         PR d/108946
 437         * d-target.cc (Target::isVectorOpSupported): Allow identity ops.
 438         * expr.cc (ExprVisitor::visit (IdentityExp *)): Handle vector identity
 439         comparisons.
 440
 441 2023-03-03  Iain Buclaw  <ibuclaw@gdcproject.org>
 442
 443         PR d/108877
 444         * imports.cc (ImportVisitor::visit (EnumDeclaration *)): Call
 445         make_import on TYPE_MAIN_VARIANT.
 446         (ImportVisitor::visit (AggregateDeclaration *)): Likewise.
 447         (ImportVisitor::visit (ClassDeclaration *)): Likewise.
 448
 449 2023-03-03  Iain Buclaw  <ibuclaw@gdcproject.org>
 450
 451         PR d/108945
 452         * d-codegen.cc (build_boolop): Evaluate vector comparison as
 453         the truth_type_for vector type.
 454
 455 2023-02-23  Arsen Arsenović  <arsen@aarsen.me>
 456
 457         * implement-d.texi: Reorder index entries around @items.
 458
 459 2023-02-23  Arsen Arsenović  <arsen@aarsen.me>
 460
 461         * gdc.texi: Reorder @opindex commands to precede @items they
 462         relate to.
 463
 464 2023-02-21  Iain Buclaw  <ibuclaw@gdcproject.org>
 465
 466         * Make-lang.in (D_FRONTEND_OBJS): Add d/location.o.
 467         * d-lang.cc (d_init_options): Update for new front-end interface.
 468         (d_post_options): Call Loc::set after handling options.
 469         * dmd/MERGE: Merge upstream dmd 09faa4eacd.
 470         * dmd/VERSION: Bump version to v2.102.0-beta.1.
 471
 472 2023-02-21  Iain Buclaw  <ibuclaw@gdcproject.org>
 473
 474         * d-codegen.cc (d_build_call): Remove front-end expansion of
 475         side-effects in a call expression.
 476         * d-gimplify.cc (d_gimplify_call_expr): Gimplify the callee before its
 477         arguments.
 478
 479 2023-02-21  Iain Buclaw  <ibuclaw@gdcproject.org>
 480
 481         * decl.cc (DeclVisitor::visit (FuncDeclaration *)): Set
 482         doing_semantic_analysis_p before calling functionSemantic3.
 483
 484 2023-01-02  Jakub Jelinek  <jakub@redhat.com>
 485
 486         * gdc.texi: Bump @copyrights-d year.
 487
 488 \f
 489 Copyright (C) 2023 Free Software Foundation, Inc.
 490
 491 Copying and distribution of this file, with or without modification,
 492 are permitted in any medium without royalty provided the copyright
 493 notice and this notice are preserved.