1 /* Call-backs for C++ error reporting. 2 This code is non-reentrant. 3 Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2002, 2003, 4 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012 5 Free Software Foundation, Inc. 6 This file is part of GCC. 7 8 GCC is free software; you can redistribute it and/or modify 9 it under the terms of the GNU General Public License as published by 10 the Free Software Foundation; either version 3, or (at your option) 11 any later version. 12 13 GCC is distributed in the hope that it will be useful, 14 but WITHOUT ANY WARRANTY; without even the implied warranty of 15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 GNU General Public License for more details. 17 18 You should have received a copy of the GNU General Public License 19 along with GCC; see the file COPYING3. If not see 20 <http://www.gnu.org/licenses/>. */ 21 22 #include "config.h" 23 #include "system.h" 24 #include "coretypes.h" 25 #include "tm.h" 26 #include "tree.h" 27 #include "cp-tree.h" 28 #include "flags.h" 29 #include "diagnostic.h" 30 #include "tree-diagnostic.h" 31 #include "langhooks-def.h" 32 #include "intl.h" 33 #include "cxx-pretty-print.h" 34 #include "tree-pretty-print.h" 35 #include "pointer-set.h" 36 #include "c-family/c-objc.h" 37 38 #define pp_separate_with_comma(PP) pp_cxx_separate_with (PP, ',') 39 #define pp_separate_with_semicolon(PP) pp_cxx_separate_with (PP, ';') 40 41 /* The global buffer where we dump everything. It is there only for 42 transitional purpose. It is expected, in the near future, to be 43 completely removed. */ 44 static cxx_pretty_printer scratch_pretty_printer; 45 #define cxx_pp (&scratch_pretty_printer) 46 47 /* Translate if being used for diagnostics, but not for dump files or 48 __PRETTY_FUNCTION. */ 49 #define M_(msgid) (pp_translate_identifiers (cxx_pp) ? _(msgid) : (msgid)) 50 51 # define NEXT_CODE(T) (TREE_CODE (TREE_TYPE (T))) 52 53 static const char *args_to_string (tree, int); 54 static const char *assop_to_string (enum tree_code); 55 static const char *code_to_string (enum tree_code); 56 static const char *cv_to_string (tree, int); 57 static const char *decl_to_string (tree, int); 58 static const char *expr_to_string (tree); 59 static const char *fndecl_to_string (tree, int); 60 static const char *op_to_string (enum tree_code); 61 static const char *parm_to_string (int); 62 static const char *type_to_string (tree, int); 63 64 static void dump_alias_template_specialization (tree, int); 65 static void dump_type (tree, int); 66 static void dump_typename (tree, int); 67 static void dump_simple_decl (tree, tree, int); 68 static void dump_decl (tree, int); 69 static void dump_template_decl (tree, int); 70 static void dump_function_decl (tree, int); 71 static void dump_expr (tree, int); 72 static void dump_unary_op (const char *, tree, int); 73 static void dump_binary_op (const char *, tree, int); 74 static void dump_aggr_type (tree, int); 75 static void dump_type_prefix (tree, int); 76 static void dump_type_suffix (tree, int); 77 static void dump_function_name (tree, int); 78 static void dump_call_expr_args (tree, int, bool); 79 static void dump_aggr_init_expr_args (tree, int, bool); 80 static void dump_expr_list (tree, int); 81 static void dump_global_iord (tree); 82 static void dump_parameters (tree, int); 83 static void dump_exception_spec (tree, int); 84 static void dump_template_argument (tree, int); 85 static void dump_template_argument_list (tree, int); 86 static void dump_template_parameter (tree, int); 87 static void dump_template_bindings (tree, tree, VEC(tree,gc) *); 88 static void dump_scope (tree, int); 89 static void dump_template_parms (tree, int, int); 90 static int get_non_default_template_args_count (tree, int); 91 static const char *function_category (tree); 92 static void maybe_print_constexpr_context (diagnostic_context *); 93 static void maybe_print_instantiation_context (diagnostic_context *); 94 static void print_instantiation_full_context (diagnostic_context *); 95 static void print_instantiation_partial_context (diagnostic_context *, 96 struct tinst_level *, 97 location_t); 98 static void cp_diagnostic_starter (diagnostic_context *, diagnostic_info *); 99 static void cp_diagnostic_finalizer (diagnostic_context *, diagnostic_info *); 100 static void cp_print_error_function (diagnostic_context *, diagnostic_info *); 101 102 static bool cp_printer (pretty_printer *, text_info *, const char *, 103 int, bool, bool, bool); 104 105 void 106 init_error (void) 107 { 108 diagnostic_starter (global_dc) = cp_diagnostic_starter; 109 diagnostic_finalizer (global_dc) = cp_diagnostic_finalizer; 110 diagnostic_format_decoder (global_dc) = cp_printer; 111 112 pp_construct (pp_base (cxx_pp), NULL, 0); 113 pp_cxx_pretty_printer_init (cxx_pp); 114 } 115 116 /* Dump a scope, if deemed necessary. */ 117 118 static void 119 dump_scope (tree scope, int flags) 120 { 121 int f = flags & (TFF_SCOPE | TFF_CHASE_TYPEDEF); 122 123 if (scope == NULL_TREE) 124 return; 125 126 if (TREE_CODE (scope) == NAMESPACE_DECL) 127 { 128 if (scope != global_namespace) 129 { 130 dump_decl (scope, f); 131 pp_cxx_colon_colon (cxx_pp); 132 } 133 } 134 else if (AGGREGATE_TYPE_P (scope)) 135 { 136 dump_type (scope, f); 137 pp_cxx_colon_colon (cxx_pp); 138 } 139 else if ((flags & TFF_SCOPE) && TREE_CODE (scope) == FUNCTION_DECL) 140 { 141 dump_function_decl (scope, f); 142 pp_cxx_colon_colon (cxx_pp); 143 } 144 } 145 146 /* Dump the template ARGument under control of FLAGS. */ 147 148 static void 149 dump_template_argument (tree arg, int flags) 150 { 151 if (ARGUMENT_PACK_P (arg)) 152 dump_template_argument_list (ARGUMENT_PACK_ARGS (arg), 153 /* No default args in argument packs. */ 154 flags|TFF_NO_OMIT_DEFAULT_TEMPLATE_ARGUMENTS); 155 else if (TYPE_P (arg) || TREE_CODE (arg) == TEMPLATE_DECL) 156 dump_type (arg, flags & ~TFF_CLASS_KEY_OR_ENUM); 157 else 158 { 159 if (TREE_CODE (arg) == TREE_LIST) 160 arg = TREE_VALUE (arg); 161 162 dump_expr (arg, (flags | TFF_EXPR_IN_PARENS) & ~TFF_CLASS_KEY_OR_ENUM); 163 } 164 } 165 166 /* Count the number of template arguments ARGS whose value does not 167 match the (optional) default template parameter in PARAMS */ 168 169 static int 170 get_non_default_template_args_count (tree args, int flags) 171 { 172 int n = TREE_VEC_LENGTH (INNERMOST_TEMPLATE_ARGS (args)); 173 174 if (/* We use this flag when generating debug information. We don't 175 want to expand templates at this point, for this may generate 176 new decls, which gets decl counts out of sync, which may in 177 turn cause codegen differences between compilations with and 178 without -g. */ 179 (flags & TFF_NO_OMIT_DEFAULT_TEMPLATE_ARGUMENTS) != 0 180 || !flag_pretty_templates) 181 return n; 182 183 return GET_NON_DEFAULT_TEMPLATE_ARGS_COUNT (INNERMOST_TEMPLATE_ARGS (args)); 184 } 185 186 /* Dump a template-argument-list ARGS (always a TREE_VEC) under control 187 of FLAGS. */ 188 189 static void 190 dump_template_argument_list (tree args, int flags) 191 { 192 int n = get_non_default_template_args_count (args, flags); 193 int need_comma = 0; 194 int i; 195 196 for (i = 0; i < n; ++i) 197 { 198 tree arg = TREE_VEC_ELT (args, i); 199 200 /* Only print a comma if we know there is an argument coming. In 201 the case of an empty template argument pack, no actual 202 argument will be printed. */ 203 if (need_comma 204 && (!ARGUMENT_PACK_P (arg) 205 || TREE_VEC_LENGTH (ARGUMENT_PACK_ARGS (arg)) > 0)) 206 pp_separate_with_comma (cxx_pp); 207 208 dump_template_argument (arg, flags); 209 need_comma = 1; 210 } 211 } 212 213 /* Dump a template parameter PARM (a TREE_LIST) under control of FLAGS. */ 214 215 static void 216 dump_template_parameter (tree parm, int flags) 217 { 218 tree p; 219 tree a; 220 221 if (parm == error_mark_node) 222 return; 223 224 p = TREE_VALUE (parm); 225 a = TREE_PURPOSE (parm); 226 227 if (TREE_CODE (p) == TYPE_DECL) 228 { 229 if (flags & TFF_DECL_SPECIFIERS) 230 { 231 pp_cxx_ws_string (cxx_pp, "class"); 232 if (TEMPLATE_TYPE_PARAMETER_PACK (TREE_TYPE (p))) 233 pp_cxx_ws_string (cxx_pp, "..."); 234 if (DECL_NAME (p)) 235 pp_cxx_tree_identifier (cxx_pp, DECL_NAME (p)); 236 } 237 else if (DECL_NAME (p)) 238 pp_cxx_tree_identifier (cxx_pp, DECL_NAME (p)); 239 else 240 pp_cxx_canonical_template_parameter (cxx_pp, TREE_TYPE (p)); 241 } 242 else 243 dump_decl (p, flags | TFF_DECL_SPECIFIERS); 244 245 if ((flags & TFF_FUNCTION_DEFAULT_ARGUMENTS) && a != NULL_TREE) 246 { 247 pp_cxx_whitespace (cxx_pp); 248 pp_equal (cxx_pp); 249 pp_cxx_whitespace (cxx_pp); 250 if (TREE_CODE (p) == TYPE_DECL || TREE_CODE (p) == TEMPLATE_DECL) 251 dump_type (a, flags & ~TFF_CHASE_TYPEDEF); 252 else 253 dump_expr (a, flags | TFF_EXPR_IN_PARENS); 254 } 255 } 256 257 /* Dump, under control of FLAGS, a template-parameter-list binding. 258 PARMS is a TREE_LIST of TREE_VEC of TREE_LIST and ARGS is a 259 TREE_VEC. */ 260 261 static void 262 dump_template_bindings (tree parms, tree args, VEC(tree,gc)* typenames) 263 { 264 bool need_semicolon = false; 265 int i; 266 tree t; 267 268 while (parms) 269 { 270 tree p = TREE_VALUE (parms); 271 int lvl = TMPL_PARMS_DEPTH (parms); 272 int arg_idx = 0; 273 int i; 274 tree lvl_args = NULL_TREE; 275 276 /* Don't crash if we had an invalid argument list. */ 277 if (TMPL_ARGS_DEPTH (args) >= lvl) 278 lvl_args = TMPL_ARGS_LEVEL (args, lvl); 279 280 for (i = 0; i < TREE_VEC_LENGTH (p); ++i) 281 { 282 tree arg = NULL_TREE; 283 284 /* Don't crash if we had an invalid argument list. */ 285 if (lvl_args && NUM_TMPL_ARGS (lvl_args) > arg_idx) 286 arg = TREE_VEC_ELT (lvl_args, arg_idx); 287 288 if (need_semicolon) 289 pp_separate_with_semicolon (cxx_pp); 290 dump_template_parameter (TREE_VEC_ELT (p, i), TFF_PLAIN_IDENTIFIER); 291 pp_cxx_whitespace (cxx_pp); 292 pp_equal (cxx_pp); 293 pp_cxx_whitespace (cxx_pp); 294 if (arg) 295 { 296 if (ARGUMENT_PACK_P (arg)) 297 pp_cxx_left_brace (cxx_pp); 298 dump_template_argument (arg, TFF_PLAIN_IDENTIFIER); 299 if (ARGUMENT_PACK_P (arg)) 300 pp_cxx_right_brace (cxx_pp); 301 } 302 else 303 pp_string (cxx_pp, M_("<missing>")); 304 305 ++arg_idx; 306 need_semicolon = true; 307 } 308 309 parms = TREE_CHAIN (parms); 310 } 311 312 /* Don't bother with typenames for a partial instantiation. */ 313 if (VEC_empty (tree, typenames) || uses_template_parms (args)) 314 return; 315 316 FOR_EACH_VEC_ELT (tree, typenames, i, t) 317 { 318 if (need_semicolon) 319 pp_separate_with_semicolon (cxx_pp); 320 dump_type (t, TFF_PLAIN_IDENTIFIER); 321 pp_cxx_whitespace (cxx_pp); 322 pp_equal (cxx_pp); 323 pp_cxx_whitespace (cxx_pp); 324 push_deferring_access_checks (dk_no_check); 325 t = tsubst (t, args, tf_none, NULL_TREE); 326 pop_deferring_access_checks (); 327 /* Strip typedefs. We can't just use TFF_CHASE_TYPEDEF because 328 pp_simple_type_specifier doesn't know about it. */ 329 t = strip_typedefs (t); 330 dump_type (t, TFF_PLAIN_IDENTIFIER); 331 } 332 } 333 334 /* Dump a human-readable equivalent of the alias template 335 specialization of T. */ 336 337 static void 338 dump_alias_template_specialization (tree t, int flags) 339 { 340 tree name; 341 342 gcc_assert (alias_template_specialization_p (t)); 343 344 if (!(flags & TFF_UNQUALIFIED_NAME)) 345 dump_scope (CP_DECL_CONTEXT (TYPE_NAME (t)), flags); 346 name = TYPE_IDENTIFIER (t); 347 pp_cxx_tree_identifier (cxx_pp, name); 348 dump_template_parms (TYPE_TEMPLATE_INFO (t), 349 /*primary=*/false, 350 flags & ~TFF_TEMPLATE_HEADER); 351 } 352 353 /* Dump a human-readable equivalent of TYPE. FLAGS controls the 354 format. */ 355 356 static void 357 dump_type (tree t, int flags) 358 { 359 if (t == NULL_TREE) 360 return; 361 362 /* Don't print e.g. "struct mytypedef". */ 363 if (TYPE_P (t) && typedef_variant_p (t)) 364 { 365 tree decl = TYPE_NAME (t); 366 if ((flags & TFF_CHASE_TYPEDEF) 367 || DECL_SELF_REFERENCE_P (decl) 368 || (!flag_pretty_templates 369 && DECL_LANG_SPECIFIC (decl) && DECL_TEMPLATE_INFO (decl))) 370 t = strip_typedefs (t); 371 else if (alias_template_specialization_p (t)) 372 { 373 dump_alias_template_specialization (t, flags); 374 return; 375 } 376 else if (same_type_p (t, TREE_TYPE (decl))) 377 t = decl; 378 else 379 { 380 pp_cxx_cv_qualifier_seq (cxx_pp, t); 381 pp_cxx_tree_identifier (cxx_pp, TYPE_IDENTIFIER (t)); 382 return; 383 } 384 } 385 386 if (TYPE_PTRMEMFUNC_P (t)) 387 goto offset_type; 388 389 switch (TREE_CODE (t)) 390 { 391 case LANG_TYPE: 392 if (t == init_list_type_node) 393 pp_string (cxx_pp, M_("<brace-enclosed initializer list>")); 394 else if (t == unknown_type_node) 395 pp_string (cxx_pp, M_("<unresolved overloaded function type>")); 396 else 397 { 398 pp_cxx_cv_qualifier_seq (cxx_pp, t); 399 pp_cxx_tree_identifier (cxx_pp, TYPE_IDENTIFIER (t)); 400 } 401 break; 402 403 case TREE_LIST: 404 /* A list of function parms. */ 405 dump_parameters (t, flags); 406 break; 407 408 case IDENTIFIER_NODE: 409 pp_cxx_tree_identifier (cxx_pp, t); 410 break; 411 412 case TREE_BINFO: 413 dump_type (BINFO_TYPE (t), flags); 414 break; 415 416 case RECORD_TYPE: 417 case UNION_TYPE: 418 case ENUMERAL_TYPE: 419 dump_aggr_type (t, flags); 420 break; 421 422 case TYPE_DECL: 423 if (flags & TFF_CHASE_TYPEDEF) 424 { 425 dump_type (DECL_ORIGINAL_TYPE (t) 426 ? DECL_ORIGINAL_TYPE (t) : TREE_TYPE (t), flags); 427 break; 428 } 429 /* Else fall through. */ 430 431 case TEMPLATE_DECL: 432 case NAMESPACE_DECL: 433 dump_decl (t, flags & ~TFF_DECL_SPECIFIERS); 434 break; 435 436 case INTEGER_TYPE: 437 case REAL_TYPE: 438 case VOID_TYPE: 439 case BOOLEAN_TYPE: 440 case COMPLEX_TYPE: 441 case VECTOR_TYPE: 442 case FIXED_POINT_TYPE: 443 pp_type_specifier_seq (cxx_pp, t); 444 break; 445 446 case TEMPLATE_TEMPLATE_PARM: 447 /* For parameters inside template signature. */ 448 if (TYPE_IDENTIFIER (t)) 449 pp_cxx_tree_identifier (cxx_pp, TYPE_IDENTIFIER (t)); 450 else 451 pp_cxx_canonical_template_parameter (cxx_pp, t); 452 break; 453 454 case BOUND_TEMPLATE_TEMPLATE_PARM: 455 { 456 tree args = TYPE_TI_ARGS (t); 457 pp_cxx_cv_qualifier_seq (cxx_pp, t); 458 pp_cxx_tree_identifier (cxx_pp, TYPE_IDENTIFIER (t)); 459 pp_cxx_begin_template_argument_list (cxx_pp); 460 dump_template_argument_list (args, flags); 461 pp_cxx_end_template_argument_list (cxx_pp); 462 } 463 break; 464 465 case TEMPLATE_TYPE_PARM: 466 pp_cxx_cv_qualifier_seq (cxx_pp, t); 467 if (TYPE_IDENTIFIER (t)) 468 pp_cxx_tree_identifier (cxx_pp, TYPE_IDENTIFIER (t)); 469 else 470 pp_cxx_canonical_template_parameter 471 (cxx_pp, TEMPLATE_TYPE_PARM_INDEX (t)); 472 break; 473 474 /* This is not always necessary for pointers and such, but doing this 475 reduces code size. */ 476 case ARRAY_TYPE: 477 case POINTER_TYPE: 478 case REFERENCE_TYPE: 479 case OFFSET_TYPE: 480 offset_type: 481 case FUNCTION_TYPE: 482 case METHOD_TYPE: 483 { 484 dump_type_prefix (t, flags); 485 dump_type_suffix (t, flags); 486 break; 487 } 488 case TYPENAME_TYPE: 489 if (! (flags & TFF_CHASE_TYPEDEF) 490 && DECL_ORIGINAL_TYPE (TYPE_NAME (t))) 491 { 492 dump_decl (TYPE_NAME (t), TFF_PLAIN_IDENTIFIER); 493 break; 494 } 495 pp_cxx_cv_qualifier_seq (cxx_pp, t); 496 pp_cxx_ws_string (cxx_pp, 497 TYPENAME_IS_ENUM_P (t) ? "enum" 498 : TYPENAME_IS_CLASS_P (t) ? "class" 499 : "typename"); 500 dump_typename (t, flags); 501 break; 502 503 case UNBOUND_CLASS_TEMPLATE: 504 if (! (flags & TFF_UNQUALIFIED_NAME)) 505 { 506 dump_type (TYPE_CONTEXT (t), flags); 507 pp_cxx_colon_colon (cxx_pp); 508 } 509 pp_cxx_ws_string (cxx_pp, "template"); 510 dump_type (DECL_NAME (TYPE_NAME (t)), flags); 511 break; 512 513 case TYPEOF_TYPE: 514 pp_cxx_ws_string (cxx_pp, "__typeof__"); 515 pp_cxx_whitespace (cxx_pp); 516 pp_cxx_left_paren (cxx_pp); 517 dump_expr (TYPEOF_TYPE_EXPR (t), flags & ~TFF_EXPR_IN_PARENS); 518 pp_cxx_right_paren (cxx_pp); 519 break; 520 521 case UNDERLYING_TYPE: 522 pp_cxx_ws_string (cxx_pp, "__underlying_type"); 523 pp_cxx_whitespace (cxx_pp); 524 pp_cxx_left_paren (cxx_pp); 525 dump_expr (UNDERLYING_TYPE_TYPE (t), flags & ~TFF_EXPR_IN_PARENS); 526 pp_cxx_right_paren (cxx_pp); 527 break; 528 529 case TYPE_PACK_EXPANSION: 530 dump_type (PACK_EXPANSION_PATTERN (t), flags); 531 pp_cxx_ws_string (cxx_pp, "..."); 532 break; 533 534 case TYPE_ARGUMENT_PACK: 535 dump_template_argument (t, flags); 536 break; 537 538 case DECLTYPE_TYPE: 539 pp_cxx_ws_string (cxx_pp, "decltype"); 540 pp_cxx_whitespace (cxx_pp); 541 pp_cxx_left_paren (cxx_pp); 542 dump_expr (DECLTYPE_TYPE_EXPR (t), flags & ~TFF_EXPR_IN_PARENS); 543 pp_cxx_right_paren (cxx_pp); 544 break; 545 546 case NULLPTR_TYPE: 547 pp_string (cxx_pp, "std::nullptr_t"); 548 break; 549 550 default: 551 pp_unsupported_tree (cxx_pp, t); 552 /* Fall through to error. */ 553 554 case ERROR_MARK: 555 pp_string (cxx_pp, M_("<type error>")); 556 break; 557 } 558 } 559 560 /* Dump a TYPENAME_TYPE. We need to notice when the context is itself 561 a TYPENAME_TYPE. */ 562 563 static void 564 dump_typename (tree t, int flags) 565 { 566 tree ctx = TYPE_CONTEXT (t); 567 568 if (TREE_CODE (ctx) == TYPENAME_TYPE) 569 dump_typename (ctx, flags); 570 else 571 dump_type (ctx, flags & ~TFF_CLASS_KEY_OR_ENUM); 572 pp_cxx_colon_colon (cxx_pp); 573 dump_decl (TYPENAME_TYPE_FULLNAME (t), flags); 574 } 575 576 /* Return the name of the supplied aggregate, or enumeral type. */ 577 578 const char * 579 class_key_or_enum_as_string (tree t) 580 { 581 if (TREE_CODE (t) == ENUMERAL_TYPE) 582 { 583 if (SCOPED_ENUM_P (t)) 584 return "enum class"; 585 else 586 return "enum"; 587 } 588 else if (TREE_CODE (t) == UNION_TYPE) 589 return "union"; 590 else if (TYPE_LANG_SPECIFIC (t) && CLASSTYPE_DECLARED_CLASS (t)) 591 return "class"; 592 else 593 return "struct"; 594 } 595 596 /* Print out a class declaration T under the control of FLAGS, 597 in the form `class foo'. */ 598 599 static void 600 dump_aggr_type (tree t, int flags) 601 { 602 tree name; 603 const char *variety = class_key_or_enum_as_string (t); 604 int typdef = 0; 605 int tmplate = 0; 606 607 pp_cxx_cv_qualifier_seq (cxx_pp, t); 608 609 if (flags & TFF_CLASS_KEY_OR_ENUM) 610 pp_cxx_ws_string (cxx_pp, variety); 611 612 name = TYPE_NAME (t); 613 614 if (name) 615 { 616 typdef = (!DECL_ARTIFICIAL (name) 617 /* An alias specialization is not considered to be a 618 typedef. */ 619 && !alias_template_specialization_p (t)); 620 621 if ((typdef 622 && ((flags & TFF_CHASE_TYPEDEF) 623 || (!flag_pretty_templates && DECL_LANG_SPECIFIC (name) 624 && DECL_TEMPLATE_INFO (name)))) 625 || DECL_SELF_REFERENCE_P (name)) 626 { 627 t = TYPE_MAIN_VARIANT (t); 628 name = TYPE_NAME (t); 629 typdef = 0; 630 } 631 632 tmplate = !typdef && TREE_CODE (t) != ENUMERAL_TYPE 633 && TYPE_LANG_SPECIFIC (t) && CLASSTYPE_TEMPLATE_INFO (t) 634 && (TREE_CODE (CLASSTYPE_TI_TEMPLATE (t)) != TEMPLATE_DECL 635 || PRIMARY_TEMPLATE_P (CLASSTYPE_TI_TEMPLATE (t))); 636 637 if (! (flags & TFF_UNQUALIFIED_NAME)) 638 dump_scope (CP_DECL_CONTEXT (name), flags | TFF_SCOPE); 639 flags &= ~TFF_UNQUALIFIED_NAME; 640 if (tmplate) 641 { 642 /* Because the template names are mangled, we have to locate 643 the most general template, and use that name. */ 644 tree tpl = TYPE_TI_TEMPLATE (t); 645 646 while (DECL_TEMPLATE_INFO (tpl)) 647 tpl = DECL_TI_TEMPLATE (tpl); 648 name = tpl; 649 } 650 name = DECL_NAME (name); 651 } 652 653 if (name == 0 || ANON_AGGRNAME_P (name)) 654 { 655 if (flags & TFF_CLASS_KEY_OR_ENUM) 656 pp_string (cxx_pp, M_("<anonymous>")); 657 else 658 pp_printf (pp_base (cxx_pp), M_("<anonymous %s>"), variety); 659 } 660 else if (LAMBDANAME_P (name)) 661 { 662 /* A lambda's "type" is essentially its signature. */ 663 pp_string (cxx_pp, M_("<lambda")); 664 if (lambda_function (t)) 665 dump_parameters (FUNCTION_FIRST_USER_PARMTYPE (lambda_function (t)), 666 flags); 667 pp_character(cxx_pp, '>'); 668 } 669 else 670 pp_cxx_tree_identifier (cxx_pp, name); 671 if (tmplate) 672 dump_template_parms (TYPE_TEMPLATE_INFO (t), 673 !CLASSTYPE_USE_TEMPLATE (t), 674 flags & ~TFF_TEMPLATE_HEADER); 675 } 676 677 /* Dump into the obstack the initial part of the output for a given type. 678 This is necessary when dealing with things like functions returning 679 functions. Examples: 680 681 return type of `int (* fee ())()': pointer -> function -> int. Both 682 pointer (and reference and offset) and function (and member) types must 683 deal with prefix and suffix. 684 685 Arrays must also do this for DECL nodes, like int a[], and for things like 686 int *[]&. */ 687 688 static void 689 dump_type_prefix (tree t, int flags) 690 { 691 if (TYPE_PTRMEMFUNC_P (t)) 692 { 693 t = TYPE_PTRMEMFUNC_FN_TYPE (t); 694 goto offset_type; 695 } 696 697 switch (TREE_CODE (t)) 698 { 699 case POINTER_TYPE: 700 case REFERENCE_TYPE: 701 { 702 tree sub = TREE_TYPE (t); 703 704 dump_type_prefix (sub, flags); 705 if (TREE_CODE (sub) == ARRAY_TYPE 706 || TREE_CODE (sub) == FUNCTION_TYPE) 707 { 708 pp_cxx_whitespace (cxx_pp); 709 pp_cxx_left_paren (cxx_pp); 710 pp_c_attributes_display (pp_c_base (cxx_pp), 711 TYPE_ATTRIBUTES (sub)); 712 } 713 if (TREE_CODE (t) == POINTER_TYPE) 714 pp_character(cxx_pp, '*'); 715 else if (TREE_CODE (t) == REFERENCE_TYPE) 716 { 717 if (TYPE_REF_IS_RVALUE (t)) 718 pp_string (cxx_pp, "&&"); 719 else 720 pp_character (cxx_pp, '&'); 721 } 722 pp_base (cxx_pp)->padding = pp_before; 723 pp_cxx_cv_qualifier_seq (cxx_pp, t); 724 } 725 break; 726 727 case OFFSET_TYPE: 728 offset_type: 729 dump_type_prefix (TREE_TYPE (t), flags); 730 if (TREE_CODE (t) == OFFSET_TYPE) /* pmfs deal with this in d_t_p */ 731 { 732 pp_maybe_space (cxx_pp); 733 if (TREE_CODE (TREE_TYPE (t)) == ARRAY_TYPE) 734 pp_cxx_left_paren (cxx_pp); 735 dump_type (TYPE_OFFSET_BASETYPE (t), flags); 736 pp_cxx_colon_colon (cxx_pp); 737 } 738 pp_cxx_star (cxx_pp); 739 pp_cxx_cv_qualifier_seq (cxx_pp, t); 740 pp_base (cxx_pp)->padding = pp_before; 741 break; 742 743 /* This can be reached without a pointer when dealing with 744 templates, e.g. std::is_function. */ 745 case FUNCTION_TYPE: 746 dump_type_prefix (TREE_TYPE (t), flags); 747 break; 748 749 case METHOD_TYPE: 750 dump_type_prefix (TREE_TYPE (t), flags); 751 pp_maybe_space (cxx_pp); 752 pp_cxx_left_paren (cxx_pp); 753 dump_aggr_type (TYPE_METHOD_BASETYPE (t), flags); 754 pp_cxx_colon_colon (cxx_pp); 755 break; 756 757 case ARRAY_TYPE: 758 dump_type_prefix (TREE_TYPE (t), flags); 759 break; 760 761 case ENUMERAL_TYPE: 762 case IDENTIFIER_NODE: 763 case INTEGER_TYPE: 764 case BOOLEAN_TYPE: 765 case REAL_TYPE: 766 case RECORD_TYPE: 767 case TEMPLATE_TYPE_PARM: 768 case TEMPLATE_TEMPLATE_PARM: 769 case BOUND_TEMPLATE_TEMPLATE_PARM: 770 case TREE_LIST: 771 case TYPE_DECL: 772 case TREE_VEC: 773 case UNION_TYPE: 774 case LANG_TYPE: 775 case VOID_TYPE: 776 case TYPENAME_TYPE: 777 case COMPLEX_TYPE: 778 case VECTOR_TYPE: 779 case TYPEOF_TYPE: 780 case UNDERLYING_TYPE: 781 case DECLTYPE_TYPE: 782 case TYPE_PACK_EXPANSION: 783 case FIXED_POINT_TYPE: 784 case NULLPTR_TYPE: 785 dump_type (t, flags); 786 pp_base (cxx_pp)->padding = pp_before; 787 break; 788 789 default: 790 pp_unsupported_tree (cxx_pp, t); 791 /* fall through. */ 792 case ERROR_MARK: 793 pp_string (cxx_pp, M_("<typeprefixerror>")); 794 break; 795 } 796 } 797 798 /* Dump the suffix of type T, under control of FLAGS. This is the part 799 which appears after the identifier (or function parms). */ 800 801 static void 802 dump_type_suffix (tree t, int flags) 803 { 804 if (TYPE_PTRMEMFUNC_P (t)) 805 t = TYPE_PTRMEMFUNC_FN_TYPE (t); 806 807 switch (TREE_CODE (t)) 808 { 809 case POINTER_TYPE: 810 case REFERENCE_TYPE: 811 case OFFSET_TYPE: 812 if (TREE_CODE (TREE_TYPE (t)) == ARRAY_TYPE 813 || TREE_CODE (TREE_TYPE (t)) == FUNCTION_TYPE) 814 pp_cxx_right_paren (cxx_pp); 815 dump_type_suffix (TREE_TYPE (t), flags); 816 break; 817 818 case FUNCTION_TYPE: 819 case METHOD_TYPE: 820 { 821 tree arg; 822 if (TREE_CODE (t) == METHOD_TYPE) 823 /* Can only be reached through a pointer. */ 824 pp_cxx_right_paren (cxx_pp); 825 arg = TYPE_ARG_TYPES (t); 826 if (TREE_CODE (t) == METHOD_TYPE) 827 arg = TREE_CHAIN (arg); 828 829 /* Function pointers don't have default args. Not in standard C++, 830 anyway; they may in g++, but we'll just pretend otherwise. */ 831 dump_parameters (arg, flags & ~TFF_FUNCTION_DEFAULT_ARGUMENTS); 832 833 if (TREE_CODE (t) == METHOD_TYPE) 834 pp_cxx_cv_qualifier_seq (cxx_pp, class_of_this_parm (t)); 835 else 836 pp_cxx_cv_qualifier_seq (cxx_pp, t); 837 dump_exception_spec (TYPE_RAISES_EXCEPTIONS (t), flags); 838 dump_type_suffix (TREE_TYPE (t), flags); 839 break; 840 } 841 842 case ARRAY_TYPE: 843 pp_maybe_space (cxx_pp); 844 pp_cxx_left_bracket (cxx_pp); 845 if (TYPE_DOMAIN (t)) 846 { 847 tree dtype = TYPE_DOMAIN (t); 848 tree max = TYPE_MAX_VALUE (dtype); 849 if (host_integerp (max, 0)) 850 pp_wide_integer (cxx_pp, tree_low_cst (max, 0) + 1); 851 else if (TREE_CODE (max) == MINUS_EXPR) 852 dump_expr (TREE_OPERAND (max, 0), 853 flags & ~TFF_EXPR_IN_PARENS); 854 else 855 dump_expr (fold_build2_loc (input_location, 856 PLUS_EXPR, dtype, max, 857 build_int_cst (dtype, 1)), 858 flags & ~TFF_EXPR_IN_PARENS); 859 } 860 pp_cxx_right_bracket (cxx_pp); 861 dump_type_suffix (TREE_TYPE (t), flags); 862 break; 863 864 case ENUMERAL_TYPE: 865 case IDENTIFIER_NODE: 866 case INTEGER_TYPE: 867 case BOOLEAN_TYPE: 868 case REAL_TYPE: 869 case RECORD_TYPE: 870 case TEMPLATE_TYPE_PARM: 871 case TEMPLATE_TEMPLATE_PARM: 872 case BOUND_TEMPLATE_TEMPLATE_PARM: 873 case TREE_LIST: 874 case TYPE_DECL: 875 case TREE_VEC: 876 case UNION_TYPE: 877 case LANG_TYPE: 878 case VOID_TYPE: 879 case TYPENAME_TYPE: 880 case COMPLEX_TYPE: 881 case VECTOR_TYPE: 882 case TYPEOF_TYPE: 883 case UNDERLYING_TYPE: 884 case DECLTYPE_TYPE: 885 case TYPE_PACK_EXPANSION: 886 case FIXED_POINT_TYPE: 887 case NULLPTR_TYPE: 888 break; 889 890 default: 891 pp_unsupported_tree (cxx_pp, t); 892 case ERROR_MARK: 893 /* Don't mark it here, we should have already done in 894 dump_type_prefix. */ 895 break; 896 } 897 } 898 899 static void 900 dump_global_iord (tree t) 901 { 902 const char *p = NULL; 903 904 if (DECL_GLOBAL_CTOR_P (t)) 905 p = M_("(static initializers for %s)"); 906 else if (DECL_GLOBAL_DTOR_P (t)) 907 p = M_("(static destructors for %s)"); 908 else 909 gcc_unreachable (); 910 911 pp_printf (pp_base (cxx_pp), p, input_filename); 912 } 913 914 static void 915 dump_simple_decl (tree t, tree type, int flags) 916 { 917 if (flags & TFF_DECL_SPECIFIERS) 918 { 919 if (TREE_CODE (t) == VAR_DECL 920 && DECL_DECLARED_CONSTEXPR_P (t)) 921 pp_cxx_ws_string (cxx_pp, "constexpr"); 922 dump_type_prefix (type, flags & ~TFF_UNQUALIFIED_NAME); 923 pp_maybe_space (cxx_pp); 924 } 925 if (! (flags & TFF_UNQUALIFIED_NAME) 926 && TREE_CODE (t) != PARM_DECL 927 && (!DECL_INITIAL (t) 928 || TREE_CODE (DECL_INITIAL (t)) != TEMPLATE_PARM_INDEX)) 929 dump_scope (CP_DECL_CONTEXT (t), flags); 930 flags &= ~TFF_UNQUALIFIED_NAME; 931 if ((flags & TFF_DECL_SPECIFIERS) 932 && DECL_TEMPLATE_PARM_P (t) 933 && TEMPLATE_PARM_PARAMETER_PACK (DECL_INITIAL (t))) 934 pp_string (cxx_pp, "..."); 935 if (DECL_NAME (t)) 936 dump_decl (DECL_NAME (t), flags); 937 else 938 pp_string (cxx_pp, M_("<anonymous>")); 939 if (flags & TFF_DECL_SPECIFIERS) 940 dump_type_suffix (type, flags); 941 } 942 943 /* Dump a human readable string for the decl T under control of FLAGS. */ 944 945 static void 946 dump_decl (tree t, int flags) 947 { 948 if (t == NULL_TREE) 949 return; 950 951 /* If doing Objective-C++, give Objective-C a chance to demangle 952 Objective-C method names. */ 953 if (c_dialect_objc ()) 954 { 955 const char *demangled = objc_maybe_printable_name (t, flags); 956 if (demangled) 957 { 958 pp_string (cxx_pp, demangled); 959 return; 960 } 961 } 962 963 switch (TREE_CODE (t)) 964 { 965 case TYPE_DECL: 966 /* Don't say 'typedef class A' */ 967 if (DECL_ARTIFICIAL (t) && !DECL_SELF_REFERENCE_P (t)) 968 { 969 if ((flags & TFF_DECL_SPECIFIERS) 970 && TREE_CODE (TREE_TYPE (t)) == TEMPLATE_TYPE_PARM) 971 { 972 /* Say `class T' not just `T'. */ 973 pp_cxx_ws_string (cxx_pp, "class"); 974 975 /* Emit the `...' for a parameter pack. */ 976 if (TEMPLATE_TYPE_PARAMETER_PACK (TREE_TYPE (t))) 977 pp_cxx_ws_string (cxx_pp, "..."); 978 } 979 980 dump_type (TREE_TYPE (t), flags); 981 break; 982 } 983 if (TYPE_DECL_ALIAS_P (t) 984 && (flags & TFF_DECL_SPECIFIERS 985 || flags & TFF_CLASS_KEY_OR_ENUM)) 986 { 987 pp_cxx_ws_string (cxx_pp, "using"); 988 dump_decl (DECL_NAME (t), flags); 989 pp_cxx_whitespace (cxx_pp); 990 pp_cxx_ws_string (cxx_pp, "="); 991 pp_cxx_whitespace (cxx_pp); 992 dump_type (DECL_ORIGINAL_TYPE (t), flags); 993 break; 994 } 995 if ((flags & TFF_DECL_SPECIFIERS) 996 && !DECL_SELF_REFERENCE_P (t)) 997 pp_cxx_ws_string (cxx_pp, "typedef"); 998 dump_simple_decl (t, DECL_ORIGINAL_TYPE (t) 999 ? DECL_ORIGINAL_TYPE (t) : TREE_TYPE (t), 1000 flags); 1001 break; 1002 1003 case VAR_DECL: 1004 if (DECL_NAME (t) && VTABLE_NAME_P (DECL_NAME (t))) 1005 { 1006 pp_string (cxx_pp, M_("vtable for ")); 1007 gcc_assert (TYPE_P (DECL_CONTEXT (t))); 1008 dump_type (DECL_CONTEXT (t), flags); 1009 break; 1010 } 1011 /* Else fall through. */ 1012 case FIELD_DECL: 1013 case PARM_DECL: 1014 dump_simple_decl (t, TREE_TYPE (t), flags); 1015 break; 1016 1017 case RESULT_DECL: 1018 pp_string (cxx_pp, M_("<return value> ")); 1019 dump_simple_decl (t, TREE_TYPE (t), flags); 1020 break; 1021 1022 case NAMESPACE_DECL: 1023 if (flags & TFF_DECL_SPECIFIERS) 1024 pp_cxx_declaration (cxx_pp, t); 1025 else 1026 { 1027 if (! (flags & TFF_UNQUALIFIED_NAME)) 1028 dump_scope (CP_DECL_CONTEXT (t), flags); 1029 flags &= ~TFF_UNQUALIFIED_NAME; 1030 if (DECL_NAME (t) == NULL_TREE) 1031 pp_cxx_ws_string (cxx_pp, M_("{anonymous}")); 1032 else 1033 pp_cxx_tree_identifier (cxx_pp, DECL_NAME (t)); 1034 } 1035 break; 1036 1037 case SCOPE_REF: 1038 dump_type (TREE_OPERAND (t, 0), flags); 1039 pp_string (cxx_pp, "::"); 1040 dump_decl (TREE_OPERAND (t, 1), flags|TFF_UNQUALIFIED_NAME); 1041 break; 1042 1043 case ARRAY_REF: 1044 dump_decl (TREE_OPERAND (t, 0), flags); 1045 pp_cxx_left_bracket (cxx_pp); 1046 dump_decl (TREE_OPERAND (t, 1), flags); 1047 pp_cxx_right_bracket (cxx_pp); 1048 break; 1049 1050 /* So that we can do dump_decl on an aggr type. */ 1051 case RECORD_TYPE: 1052 case UNION_TYPE: 1053 case ENUMERAL_TYPE: 1054 dump_type (t, flags); 1055 break; 1056 1057 case BIT_NOT_EXPR: 1058 /* This is a pseudo destructor call which has not been folded into 1059 a PSEUDO_DTOR_EXPR yet. */ 1060 pp_cxx_complement (cxx_pp); 1061 dump_type (TREE_OPERAND (t, 0), flags); 1062 break; 1063 1064 case TYPE_EXPR: 1065 gcc_unreachable (); 1066 break; 1067 1068 /* These special cases are duplicated here so that other functions 1069 can feed identifiers to error and get them demangled properly. */ 1070 case IDENTIFIER_NODE: 1071 if (IDENTIFIER_TYPENAME_P (t)) 1072 { 1073 pp_cxx_ws_string (cxx_pp, "operator"); 1074 /* Not exactly IDENTIFIER_TYPE_VALUE. */ 1075 dump_type (TREE_TYPE (t), flags); 1076 break; 1077 } 1078 else 1079 pp_cxx_tree_identifier (cxx_pp, t); 1080 break; 1081 1082 case OVERLOAD: 1083 if (OVL_CHAIN (t)) 1084 { 1085 t = OVL_CURRENT (t); 1086 if (DECL_CLASS_SCOPE_P (t)) 1087 { 1088 dump_type (DECL_CONTEXT (t), flags); 1089 pp_cxx_colon_colon (cxx_pp); 1090 } 1091 else if (!DECL_FILE_SCOPE_P (t)) 1092 { 1093 dump_decl (DECL_CONTEXT (t), flags); 1094 pp_cxx_colon_colon (cxx_pp); 1095 } 1096 dump_decl (DECL_NAME (t), flags); 1097 break; 1098 } 1099 1100 /* If there's only one function, just treat it like an ordinary 1101 FUNCTION_DECL. */ 1102 t = OVL_CURRENT (t); 1103 /* Fall through. */ 1104 1105 case FUNCTION_DECL: 1106 if (! DECL_LANG_SPECIFIC (t)) 1107 pp_string (cxx_pp, M_("<built-in>")); 1108 else if (DECL_GLOBAL_CTOR_P (t) || DECL_GLOBAL_DTOR_P (t)) 1109 dump_global_iord (t); 1110 else 1111 dump_function_decl (t, flags); 1112 break; 1113 1114 case TEMPLATE_DECL: 1115 dump_template_decl (t, flags); 1116 break; 1117 1118 case TEMPLATE_ID_EXPR: 1119 { 1120 tree name = TREE_OPERAND (t, 0); 1121 tree args = TREE_OPERAND (t, 1); 1122 1123 if (is_overloaded_fn (name)) 1124 name = DECL_NAME (get_first_fn (name)); 1125 dump_decl (name, flags); 1126 pp_cxx_begin_template_argument_list (cxx_pp); 1127 if (args == error_mark_node) 1128 pp_string (cxx_pp, M_("<template arguments error>")); 1129 else if (args) 1130 dump_template_argument_list (args, flags); 1131 pp_cxx_end_template_argument_list (cxx_pp); 1132 } 1133 break; 1134 1135 case LABEL_DECL: 1136 pp_cxx_tree_identifier (cxx_pp, DECL_NAME (t)); 1137 break; 1138 1139 case CONST_DECL: 1140 if ((TREE_TYPE (t) != NULL_TREE && NEXT_CODE (t) == ENUMERAL_TYPE) 1141 || (DECL_INITIAL (t) && 1142 TREE_CODE (DECL_INITIAL (t)) == TEMPLATE_PARM_INDEX)) 1143 dump_simple_decl (t, TREE_TYPE (t), flags); 1144 else if (DECL_NAME (t)) 1145 dump_decl (DECL_NAME (t), flags); 1146 else if (DECL_INITIAL (t)) 1147 dump_expr (DECL_INITIAL (t), flags | TFF_EXPR_IN_PARENS); 1148 else 1149 pp_string (cxx_pp, M_("<enumerator>")); 1150 break; 1151 1152 case USING_DECL: 1153 pp_cxx_ws_string (cxx_pp, "using"); 1154 dump_type (USING_DECL_SCOPE (t), flags); 1155 pp_cxx_colon_colon (cxx_pp); 1156 dump_decl (DECL_NAME (t), flags); 1157 break; 1158 1159 case STATIC_ASSERT: 1160 pp_cxx_declaration (cxx_pp, t); 1161 break; 1162 1163 case BASELINK: 1164 dump_decl (BASELINK_FUNCTIONS (t), flags); 1165 break; 1166 1167 case NON_DEPENDENT_EXPR: 1168 dump_expr (t, flags); 1169 break; 1170 1171 case TEMPLATE_TYPE_PARM: 1172 if (flags & TFF_DECL_SPECIFIERS) 1173 pp_cxx_declaration (cxx_pp, t); 1174 else 1175 pp_type_id (cxx_pp, t); 1176 break; 1177 1178 case UNBOUND_CLASS_TEMPLATE: 1179 case TYPE_PACK_EXPANSION: 1180 case TREE_BINFO: 1181 dump_type (t, flags); 1182 break; 1183 1184 default: 1185 pp_unsupported_tree (cxx_pp, t); 1186 /* Fall through to error. */ 1187 1188 case ERROR_MARK: 1189 pp_string (cxx_pp, M_("<declaration error>")); 1190 break; 1191 } 1192 } 1193 1194 /* Dump a template declaration T under control of FLAGS. This means the 1195 'template <...> leaders plus the 'class X' or 'void fn(...)' part. */ 1196 1197 static void 1198 dump_template_decl (tree t, int flags) 1199 { 1200 tree orig_parms = DECL_TEMPLATE_PARMS (t); 1201 tree parms; 1202 int i; 1203 1204 if (flags & TFF_TEMPLATE_HEADER) 1205 { 1206 for (parms = orig_parms = nreverse (orig_parms); 1207 parms; 1208 parms = TREE_CHAIN (parms)) 1209 { 1210 tree inner_parms = INNERMOST_TEMPLATE_PARMS (parms); 1211 int len = TREE_VEC_LENGTH (inner_parms); 1212 1213 pp_cxx_ws_string (cxx_pp, "template"); 1214 pp_cxx_begin_template_argument_list (cxx_pp); 1215 1216 /* If we've shown the template prefix, we'd better show the 1217 parameters' and decl's type too. */ 1218 flags |= TFF_DECL_SPECIFIERS; 1219 1220 for (i = 0; i < len; i++) 1221 { 1222 if (i) 1223 pp_separate_with_comma (cxx_pp); 1224 dump_template_parameter (TREE_VEC_ELT (inner_parms, i), flags); 1225 } 1226 pp_cxx_end_template_argument_list (cxx_pp); 1227 pp_cxx_whitespace (cxx_pp); 1228 } 1229 nreverse(orig_parms); 1230 1231 if (DECL_TEMPLATE_TEMPLATE_PARM_P (t)) 1232 { 1233 /* Say `template<arg> class TT' not just `template<arg> TT'. */ 1234 pp_cxx_ws_string (cxx_pp, "class"); 1235 1236 /* If this is a parameter pack, print the ellipsis. */ 1237 if (TEMPLATE_TYPE_PARAMETER_PACK (TREE_TYPE (t))) 1238 pp_cxx_ws_string (cxx_pp, "..."); 1239 } 1240 } 1241 1242 if (DECL_CLASS_TEMPLATE_P (t)) 1243 dump_type (TREE_TYPE (t), 1244 ((flags & ~TFF_CLASS_KEY_OR_ENUM) | TFF_TEMPLATE_NAME 1245 | (flags & TFF_DECL_SPECIFIERS ? TFF_CLASS_KEY_OR_ENUM : 0))); 1246 else if (DECL_TEMPLATE_RESULT (t) 1247 && (TREE_CODE (DECL_TEMPLATE_RESULT (t)) == VAR_DECL 1248 /* Alias template. */ 1249 || DECL_TYPE_TEMPLATE_P (t))) 1250 dump_decl (DECL_TEMPLATE_RESULT (t), flags | TFF_TEMPLATE_NAME); 1251 else 1252 { 1253 gcc_assert (TREE_TYPE (t)); 1254 switch (NEXT_CODE (t)) 1255 { 1256 case METHOD_TYPE: 1257 case FUNCTION_TYPE: 1258 dump_function_decl (t, flags | TFF_TEMPLATE_NAME); 1259 break; 1260 default: 1261 /* This case can occur with some invalid code. */ 1262 dump_type (TREE_TYPE (t), 1263 (flags & ~TFF_CLASS_KEY_OR_ENUM) | TFF_TEMPLATE_NAME 1264 | (flags & TFF_DECL_SPECIFIERS 1265 ? TFF_CLASS_KEY_OR_ENUM : 0)); 1266 } 1267 } 1268 } 1269 1270 /* find_typenames looks through the type of the function template T 1271 and returns a VEC containing any typedefs, decltypes or TYPENAME_TYPEs 1272 it finds. */ 1273 1274 struct find_typenames_t 1275 { 1276 struct pointer_set_t *p_set; 1277 VEC (tree,gc) *typenames; 1278 }; 1279 1280 static tree 1281 find_typenames_r (tree *tp, int *walk_subtrees ATTRIBUTE_UNUSED, void *data) 1282 { 1283 struct find_typenames_t *d = (struct find_typenames_t *)data; 1284 tree mv = NULL_TREE; 1285 1286 if (TYPE_P (*tp) && is_typedef_decl (TYPE_NAME (*tp))) 1287 /* Add the type of the typedef without any additional cv-quals. */ 1288 mv = TREE_TYPE (TYPE_NAME (*tp)); 1289 else if (TREE_CODE (*tp) == TYPENAME_TYPE 1290 || TREE_CODE (*tp) == DECLTYPE_TYPE) 1291 /* Add the typename without any cv-qualifiers. */ 1292 mv = TYPE_MAIN_VARIANT (*tp); 1293 1294 if (mv && (mv == *tp || !pointer_set_insert (d->p_set, mv))) 1295 VEC_safe_push (tree, gc, d->typenames, mv); 1296 1297 /* Search into class template arguments, which cp_walk_subtrees 1298 doesn't do. */ 1299 if (CLASS_TYPE_P (*tp) && CLASSTYPE_TEMPLATE_INFO (*tp)) 1300 cp_walk_tree (&CLASSTYPE_TI_ARGS (*tp), find_typenames_r, 1301 data, d->p_set); 1302 1303 return NULL_TREE; 1304 } 1305 1306 static VEC(tree,gc) * 1307 find_typenames (tree t) 1308 { 1309 struct find_typenames_t ft; 1310 ft.p_set = pointer_set_create (); 1311 ft.typenames = NULL; 1312 cp_walk_tree (&TREE_TYPE (DECL_TEMPLATE_RESULT (t)), 1313 find_typenames_r, &ft, ft.p_set); 1314 pointer_set_destroy (ft.p_set); 1315 return ft.typenames; 1316 } 1317 1318 /* Pretty print a function decl. There are several ways we want to print a 1319 function declaration. The TFF_ bits in FLAGS tells us how to behave. 1320 As error can only apply the '#' flag once to give 0 and 1 for V, there 1321 is %D which doesn't print the throw specs, and %F which does. */ 1322 1323 static void 1324 dump_function_decl (tree t, int flags) 1325 { 1326 tree fntype; 1327 tree parmtypes; 1328 tree cname = NULL_TREE; 1329 tree template_args = NULL_TREE; 1330 tree template_parms = NULL_TREE; 1331 int show_return = flags & TFF_RETURN_TYPE || flags & TFF_DECL_SPECIFIERS; 1332 int do_outer_scope = ! (flags & TFF_UNQUALIFIED_NAME); 1333 tree exceptions; 1334 VEC(tree,gc) *typenames = NULL; 1335 1336 if (DECL_NAME (t) && LAMBDA_FUNCTION_P (t)) 1337 { 1338 /* A lambda's signature is essentially its "type", so defer. */ 1339 gcc_assert (LAMBDA_TYPE_P (DECL_CONTEXT (t))); 1340 dump_type (DECL_CONTEXT (t), flags); 1341 return; 1342 } 1343 1344 flags &= ~TFF_UNQUALIFIED_NAME; 1345 if (TREE_CODE (t) == TEMPLATE_DECL) 1346 t = DECL_TEMPLATE_RESULT (t); 1347 1348 /* Save the exceptions, in case t is a specialization and we are 1349 emitting an error about incompatible specifications. */ 1350 exceptions = TYPE_RAISES_EXCEPTIONS (TREE_TYPE (t)); 1351 1352 /* Pretty print template instantiations only. */ 1353 if (DECL_USE_TEMPLATE (t) && DECL_TEMPLATE_INFO (t) 1354 && flag_pretty_templates) 1355 { 1356 tree tmpl; 1357 1358 template_args = DECL_TI_ARGS (t); 1359 tmpl = most_general_template (t); 1360 if (tmpl && TREE_CODE (tmpl) == TEMPLATE_DECL) 1361 { 1362 template_parms = DECL_TEMPLATE_PARMS (tmpl); 1363 t = tmpl; 1364 typenames = find_typenames (t); 1365 } 1366 } 1367 1368 fntype = TREE_TYPE (t); 1369 parmtypes = FUNCTION_FIRST_USER_PARMTYPE (t); 1370 1371 if (DECL_CLASS_SCOPE_P (t)) 1372 cname = DECL_CONTEXT (t); 1373 /* This is for partially instantiated template methods. */ 1374 else if (TREE_CODE (fntype) == METHOD_TYPE) 1375 cname = TREE_TYPE (TREE_VALUE (parmtypes)); 1376 1377 if (flags & TFF_DECL_SPECIFIERS) 1378 { 1379 if (DECL_STATIC_FUNCTION_P (t)) 1380 pp_cxx_ws_string (cxx_pp, "static"); 1381 else if (DECL_VIRTUAL_P (t)) 1382 pp_cxx_ws_string (cxx_pp, "virtual"); 1383 1384 if (DECL_DECLARED_CONSTEXPR_P (STRIP_TEMPLATE (t))) 1385 pp_cxx_ws_string (cxx_pp, "constexpr"); 1386 } 1387 1388 /* Print the return type? */ 1389 if (show_return) 1390 show_return = !DECL_CONV_FN_P (t) && !DECL_CONSTRUCTOR_P (t) 1391 && !DECL_DESTRUCTOR_P (t); 1392 if (show_return) 1393 dump_type_prefix (TREE_TYPE (fntype), flags); 1394 1395 /* Print the function name. */ 1396 if (!do_outer_scope) 1397 /* Nothing. */; 1398 else if (cname) 1399 { 1400 dump_type (cname, flags); 1401 pp_cxx_colon_colon (cxx_pp); 1402 } 1403 else 1404 dump_scope (CP_DECL_CONTEXT (t), flags); 1405 1406 dump_function_name (t, flags); 1407 1408 if (!(flags & TFF_NO_FUNCTION_ARGUMENTS)) 1409 { 1410 dump_parameters (parmtypes, flags); 1411 1412 if (TREE_CODE (fntype) == METHOD_TYPE) 1413 { 1414 pp_base (cxx_pp)->padding = pp_before; 1415 pp_cxx_cv_qualifier_seq (cxx_pp, class_of_this_parm (fntype)); 1416 } 1417 1418 if (flags & TFF_EXCEPTION_SPECIFICATION) 1419 { 1420 pp_base (cxx_pp)->padding = pp_before; 1421 dump_exception_spec (exceptions, flags); 1422 } 1423 1424 if (show_return) 1425 dump_type_suffix (TREE_TYPE (fntype), flags); 1426 1427 /* If T is a template instantiation, dump the parameter binding. */ 1428 if (template_parms != NULL_TREE && template_args != NULL_TREE) 1429 { 1430 pp_cxx_whitespace (cxx_pp); 1431 pp_cxx_left_bracket (cxx_pp); 1432 pp_cxx_ws_string (cxx_pp, M_("with")); 1433 pp_cxx_whitespace (cxx_pp); 1434 dump_template_bindings (template_parms, template_args, typenames); 1435 pp_cxx_right_bracket (cxx_pp); 1436 } 1437 } 1438 else if (template_args) 1439 { 1440 bool need_comma = false; 1441 int i; 1442 pp_cxx_begin_template_argument_list (cxx_pp); 1443 template_args = INNERMOST_TEMPLATE_ARGS (template_args); 1444 for (i = 0; i < TREE_VEC_LENGTH (template_args); ++i) 1445 { 1446 tree arg = TREE_VEC_ELT (template_args, i); 1447 if (need_comma) 1448 pp_separate_with_comma (cxx_pp); 1449 if (ARGUMENT_PACK_P (arg)) 1450 pp_cxx_left_brace (cxx_pp); 1451 dump_template_argument (arg, TFF_PLAIN_IDENTIFIER); 1452 if (ARGUMENT_PACK_P (arg)) 1453 pp_cxx_right_brace (cxx_pp); 1454 need_comma = true; 1455 } 1456 pp_cxx_end_template_argument_list (cxx_pp); 1457 } 1458 } 1459 1460 /* Print a parameter list. If this is for a member function, the 1461 member object ptr (and any other hidden args) should have 1462 already been removed. */ 1463 1464 static void 1465 dump_parameters (tree parmtypes, int flags) 1466 { 1467 int first = 1; 1468 flags &= ~TFF_SCOPE; 1469 pp_cxx_left_paren (cxx_pp); 1470 1471 for (first = 1; parmtypes != void_list_node; 1472 parmtypes = TREE_CHAIN (parmtypes)) 1473 { 1474 if (!first) 1475 pp_separate_with_comma (cxx_pp); 1476 first = 0; 1477 if (!parmtypes) 1478 { 1479 pp_cxx_ws_string (cxx_pp, "..."); 1480 break; 1481 } 1482 1483 dump_type (TREE_VALUE (parmtypes), flags); 1484 1485 if ((flags & TFF_FUNCTION_DEFAULT_ARGUMENTS) && TREE_PURPOSE (parmtypes)) 1486 { 1487 pp_cxx_whitespace (cxx_pp); 1488 pp_equal (cxx_pp); 1489 pp_cxx_whitespace (cxx_pp); 1490 dump_expr (TREE_PURPOSE (parmtypes), flags | TFF_EXPR_IN_PARENS); 1491 } 1492 } 1493 1494 pp_cxx_right_paren (cxx_pp); 1495 } 1496 1497 /* Print an exception specification. T is the exception specification. */ 1498 1499 static void 1500 dump_exception_spec (tree t, int flags) 1501 { 1502 if (t && TREE_PURPOSE (t)) 1503 { 1504 pp_cxx_ws_string (cxx_pp, "noexcept"); 1505 pp_cxx_whitespace (cxx_pp); 1506 pp_cxx_left_paren (cxx_pp); 1507 if (DEFERRED_NOEXCEPT_SPEC_P (t)) 1508 pp_cxx_ws_string (cxx_pp, "<uninstantiated>"); 1509 else 1510 dump_expr (TREE_PURPOSE (t), flags); 1511 pp_cxx_right_paren (cxx_pp); 1512 } 1513 else if (t) 1514 { 1515 pp_cxx_ws_string (cxx_pp, "throw"); 1516 pp_cxx_whitespace (cxx_pp); 1517 pp_cxx_left_paren (cxx_pp); 1518 if (TREE_VALUE (t) != NULL_TREE) 1519 while (1) 1520 { 1521 dump_type (TREE_VALUE (t), flags); 1522 t = TREE_CHAIN (t); 1523 if (!t) 1524 break; 1525 pp_separate_with_comma (cxx_pp); 1526 } 1527 pp_cxx_right_paren (cxx_pp); 1528 } 1529 } 1530 1531 /* Handle the function name for a FUNCTION_DECL node, grokking operators 1532 and destructors properly. */ 1533 1534 static void 1535 dump_function_name (tree t, int flags) 1536 { 1537 tree name = DECL_NAME (t); 1538 1539 /* We can get here with a decl that was synthesized by language- 1540 independent machinery (e.g. coverage.c) in which case it won't 1541 have a lang_specific structure attached and DECL_CONSTRUCTOR_P 1542 will crash. In this case it is safe just to print out the 1543 literal name. */ 1544 if (!DECL_LANG_SPECIFIC (t)) 1545 { 1546 pp_cxx_tree_identifier (cxx_pp, name); 1547 return; 1548 } 1549 1550 if (TREE_CODE (t) == TEMPLATE_DECL) 1551 t = DECL_TEMPLATE_RESULT (t); 1552 1553 /* Don't let the user see __comp_ctor et al. */ 1554 if (DECL_CONSTRUCTOR_P (t) 1555 || DECL_DESTRUCTOR_P (t)) 1556 { 1557 if (LAMBDA_TYPE_P (DECL_CONTEXT (t))) 1558 name = get_identifier ("<lambda>"); 1559 else 1560 name = constructor_name (DECL_CONTEXT (t)); 1561 } 1562 1563 if (DECL_DESTRUCTOR_P (t)) 1564 { 1565 pp_cxx_complement (cxx_pp); 1566 dump_decl (name, TFF_PLAIN_IDENTIFIER); 1567 } 1568 else if (DECL_CONV_FN_P (t)) 1569 { 1570 /* This cannot use the hack that the operator's return 1571 type is stashed off of its name because it may be 1572 used for error reporting. In the case of conflicting 1573 declarations, both will have the same name, yet 1574 the types will be different, hence the TREE_TYPE field 1575 of the first name will be clobbered by the second. */ 1576 pp_cxx_ws_string (cxx_pp, "operator"); 1577 dump_type (TREE_TYPE (TREE_TYPE (t)), flags); 1578 } 1579 else if (name && IDENTIFIER_OPNAME_P (name)) 1580 pp_cxx_tree_identifier (cxx_pp, name); 1581 else if (name && UDLIT_OPER_P (name)) 1582 pp_cxx_tree_identifier (cxx_pp, name); 1583 else 1584 dump_decl (name, flags); 1585 1586 if (DECL_TEMPLATE_INFO (t) 1587 && !DECL_FRIEND_PSEUDO_TEMPLATE_INSTANTIATION (t) 1588 && (TREE_CODE (DECL_TI_TEMPLATE (t)) != TEMPLATE_DECL 1589 || PRIMARY_TEMPLATE_P (DECL_TI_TEMPLATE (t)))) 1590 dump_template_parms (DECL_TEMPLATE_INFO (t), !DECL_USE_TEMPLATE (t), flags); 1591 } 1592 1593 /* Dump the template parameters from the template info INFO under control of 1594 FLAGS. PRIMARY indicates whether this is a primary template decl, or 1595 specialization (partial or complete). For partial specializations we show 1596 the specialized parameter values. For a primary template we show no 1597 decoration. */ 1598 1599 static void 1600 dump_template_parms (tree info, int primary, int flags) 1601 { 1602 tree args = info ? TI_ARGS (info) : NULL_TREE; 1603 1604 if (primary && flags & TFF_TEMPLATE_NAME) 1605 return; 1606 flags &= ~(TFF_CLASS_KEY_OR_ENUM | TFF_TEMPLATE_NAME); 1607 pp_cxx_begin_template_argument_list (cxx_pp); 1608 1609 /* Be careful only to print things when we have them, so as not 1610 to crash producing error messages. */ 1611 if (args && !primary) 1612 { 1613 int len, ix; 1614 len = get_non_default_template_args_count (args, flags); 1615 1616 args = INNERMOST_TEMPLATE_ARGS (args); 1617 for (ix = 0; ix != len; ix++) 1618 { 1619 tree arg = TREE_VEC_ELT (args, ix); 1620 1621 /* Only print a comma if we know there is an argument coming. In 1622 the case of an empty template argument pack, no actual 1623 argument will be printed. */ 1624 if (ix 1625 && (!ARGUMENT_PACK_P (arg) 1626 || TREE_VEC_LENGTH (ARGUMENT_PACK_ARGS (arg)) > 0)) 1627 pp_separate_with_comma (cxx_pp); 1628 1629 if (!arg) 1630 pp_string (cxx_pp, M_("<template parameter error>")); 1631 else 1632 dump_template_argument (arg, flags); 1633 } 1634 } 1635 else if (primary) 1636 { 1637 tree tpl = TI_TEMPLATE (info); 1638 tree parms = DECL_TEMPLATE_PARMS (tpl); 1639 int len, ix; 1640 1641 parms = TREE_CODE (parms) == TREE_LIST ? TREE_VALUE (parms) : NULL_TREE; 1642 len = parms ? TREE_VEC_LENGTH (parms) : 0; 1643 1644 for (ix = 0; ix != len; ix++) 1645 { 1646 tree parm; 1647 1648 if (TREE_VEC_ELT (parms, ix) == error_mark_node) 1649 { 1650 pp_string (cxx_pp, M_("<template parameter error>")); 1651 continue; 1652 } 1653 1654 parm = TREE_VALUE (TREE_VEC_ELT (parms, ix)); 1655 1656 if (ix) 1657 pp_separate_with_comma (cxx_pp); 1658 1659 dump_decl (parm, flags & ~TFF_DECL_SPECIFIERS); 1660 } 1661 } 1662 pp_cxx_end_template_argument_list (cxx_pp); 1663 } 1664 1665 /* Print out the arguments of CALL_EXPR T as a parenthesized list using 1666 flags FLAGS. Skip over the first argument if SKIPFIRST is true. */ 1667 1668 static void 1669 dump_call_expr_args (tree t, int flags, bool skipfirst) 1670 { 1671 tree arg; 1672 call_expr_arg_iterator iter; 1673 1674 pp_cxx_left_paren (cxx_pp); 1675 FOR_EACH_CALL_EXPR_ARG (arg, iter, t) 1676 { 1677 if (skipfirst) 1678 skipfirst = false; 1679 else 1680 { 1681 dump_expr (arg, flags | TFF_EXPR_IN_PARENS); 1682 if (more_call_expr_args_p (&iter)) 1683 pp_separate_with_comma (cxx_pp); 1684 } 1685 } 1686 pp_cxx_right_paren (cxx_pp); 1687 } 1688 1689 /* Print out the arguments of AGGR_INIT_EXPR T as a parenthesized list 1690 using flags FLAGS. Skip over the first argument if SKIPFIRST is 1691 true. */ 1692 1693 static void 1694 dump_aggr_init_expr_args (tree t, int flags, bool skipfirst) 1695 { 1696 tree arg; 1697 aggr_init_expr_arg_iterator iter; 1698 1699 pp_cxx_left_paren (cxx_pp); 1700 FOR_EACH_AGGR_INIT_EXPR_ARG (arg, iter, t) 1701 { 1702 if (skipfirst) 1703 skipfirst = false; 1704 else 1705 { 1706 dump_expr (arg, flags | TFF_EXPR_IN_PARENS); 1707 if (more_aggr_init_expr_args_p (&iter)) 1708 pp_separate_with_comma (cxx_pp); 1709 } 1710 } 1711 pp_cxx_right_paren (cxx_pp); 1712 } 1713 1714 /* Print out a list of initializers (subr of dump_expr). */ 1715 1716 static void 1717 dump_expr_list (tree l, int flags) 1718 { 1719 while (l) 1720 { 1721 dump_expr (TREE_VALUE (l), flags | TFF_EXPR_IN_PARENS); 1722 l = TREE_CHAIN (l); 1723 if (l) 1724 pp_separate_with_comma (cxx_pp); 1725 } 1726 } 1727 1728 /* Print out a vector of initializers (subr of dump_expr). */ 1729 1730 static void 1731 dump_expr_init_vec (VEC(constructor_elt,gc) *v, int flags) 1732 { 1733 unsigned HOST_WIDE_INT idx; 1734 tree value; 1735 1736 FOR_EACH_CONSTRUCTOR_VALUE (v, idx, value) 1737 { 1738 dump_expr (value, flags | TFF_EXPR_IN_PARENS); 1739 if (idx != VEC_length (constructor_elt, v) - 1) 1740 pp_separate_with_comma (cxx_pp); 1741 } 1742 } 1743 1744 1745 /* We've gotten an indirect REFERENCE (an OBJ_TYPE_REF) to a virtual 1746 function. Resolve it to a close relative -- in the sense of static 1747 type -- variant being overridden. That is close to what was written in 1748 the source code. Subroutine of dump_expr. */ 1749 1750 static tree 1751 resolve_virtual_fun_from_obj_type_ref (tree ref) 1752 { 1753 tree obj_type = TREE_TYPE (OBJ_TYPE_REF_OBJECT (ref)); 1754 HOST_WIDE_INT index = tree_low_cst (OBJ_TYPE_REF_TOKEN (ref), 1); 1755 tree fun = BINFO_VIRTUALS (TYPE_BINFO (TREE_TYPE (obj_type))); 1756 while (index) 1757 { 1758 fun = TREE_CHAIN (fun); 1759 index -= (TARGET_VTABLE_USES_DESCRIPTORS 1760 ? TARGET_VTABLE_USES_DESCRIPTORS : 1); 1761 } 1762 1763 return BV_FN (fun); 1764 } 1765 1766 /* Print out an expression E under control of FLAGS. */ 1767 1768 static void 1769 dump_expr (tree t, int flags) 1770 { 1771 if (t == 0) 1772 return; 1773 1774 if (STATEMENT_CLASS_P (t)) 1775 { 1776 pp_cxx_ws_string (cxx_pp, M_("<statement>")); 1777 return; 1778 } 1779 1780 switch (TREE_CODE (t)) 1781 { 1782 case VAR_DECL: 1783 case PARM_DECL: 1784 case FIELD_DECL: 1785 case CONST_DECL: 1786 case FUNCTION_DECL: 1787 case TEMPLATE_DECL: 1788 case NAMESPACE_DECL: 1789 case LABEL_DECL: 1790 case OVERLOAD: 1791 case TYPE_DECL: 1792 case IDENTIFIER_NODE: 1793 dump_decl (t, ((flags & ~(TFF_DECL_SPECIFIERS|TFF_RETURN_TYPE 1794 |TFF_TEMPLATE_HEADER)) 1795 | TFF_NO_FUNCTION_ARGUMENTS)); 1796 break; 1797 1798 case SSA_NAME: 1799 if (!DECL_ARTIFICIAL (SSA_NAME_VAR (t))) 1800 dump_expr (SSA_NAME_VAR (t), flags); 1801 else 1802 pp_cxx_ws_string (cxx_pp, M_("<unknown>")); 1803 break; 1804 1805 case INTEGER_CST: 1806 case REAL_CST: 1807 case STRING_CST: 1808 case COMPLEX_CST: 1809 pp_constant (cxx_pp, t); 1810 break; 1811 1812 case USERDEF_LITERAL: 1813 pp_cxx_userdef_literal (cxx_pp, t); 1814 break; 1815 1816 case THROW_EXPR: 1817 /* While waiting for caret diagnostics, avoid printing 1818 __cxa_allocate_exception, __cxa_throw, and the like. */ 1819 pp_cxx_ws_string (cxx_pp, M_("<throw-expression>")); 1820 break; 1821 1822 case PTRMEM_CST: 1823 pp_ampersand (cxx_pp); 1824 dump_type (PTRMEM_CST_CLASS (t), flags); 1825 pp_cxx_colon_colon (cxx_pp); 1826 pp_cxx_tree_identifier (cxx_pp, DECL_NAME (PTRMEM_CST_MEMBER (t))); 1827 break; 1828 1829 case COMPOUND_EXPR: 1830 pp_cxx_left_paren (cxx_pp); 1831 dump_expr (TREE_OPERAND (t, 0), flags | TFF_EXPR_IN_PARENS); 1832 pp_separate_with_comma (cxx_pp); 1833 dump_expr (TREE_OPERAND (t, 1), flags | TFF_EXPR_IN_PARENS); 1834 pp_cxx_right_paren (cxx_pp); 1835 break; 1836 1837 case COND_EXPR: 1838 pp_cxx_left_paren (cxx_pp); 1839 dump_expr (TREE_OPERAND (t, 0), flags | TFF_EXPR_IN_PARENS); 1840 pp_string (cxx_pp, " ? "); 1841 dump_expr (TREE_OPERAND (t, 1), flags | TFF_EXPR_IN_PARENS); 1842 pp_string (cxx_pp, " : "); 1843 dump_expr (TREE_OPERAND (t, 2), flags | TFF_EXPR_IN_PARENS); 1844 pp_cxx_right_paren (cxx_pp); 1845 break; 1846 1847 case SAVE_EXPR: 1848 if (TREE_HAS_CONSTRUCTOR (t)) 1849 { 1850 pp_cxx_ws_string (cxx_pp, "new"); 1851 pp_cxx_whitespace (cxx_pp); 1852 dump_type (TREE_TYPE (TREE_TYPE (t)), flags); 1853 } 1854 else 1855 dump_expr (TREE_OPERAND (t, 0), flags | TFF_EXPR_IN_PARENS); 1856 break; 1857 1858 case AGGR_INIT_EXPR: 1859 { 1860 tree fn = NULL_TREE; 1861 1862 if (TREE_CODE (AGGR_INIT_EXPR_FN (t)) == ADDR_EXPR) 1863 fn = TREE_OPERAND (AGGR_INIT_EXPR_FN (t), 0); 1864 1865 if (fn && TREE_CODE (fn) == FUNCTION_DECL) 1866 { 1867 if (DECL_CONSTRUCTOR_P (fn)) 1868 dump_type (DECL_CONTEXT (fn), flags); 1869 else 1870 dump_decl (fn, 0); 1871 } 1872 else 1873 dump_expr (AGGR_INIT_EXPR_FN (t), 0); 1874 } 1875 dump_aggr_init_expr_args (t, flags, true); 1876 break; 1877 1878 case CALL_EXPR: 1879 { 1880 tree fn = CALL_EXPR_FN (t); 1881 bool skipfirst = false; 1882 1883 if (TREE_CODE (fn) == ADDR_EXPR) 1884 fn = TREE_OPERAND (fn, 0); 1885 1886 /* Nobody is interested in seeing the guts of vcalls. */ 1887 if (TREE_CODE (fn) == OBJ_TYPE_REF) 1888 fn = resolve_virtual_fun_from_obj_type_ref (fn); 1889 1890 if (TREE_TYPE (fn) != NULL_TREE 1891 && NEXT_CODE (fn) == METHOD_TYPE 1892 && call_expr_nargs (t)) 1893 { 1894 tree ob = CALL_EXPR_ARG (t, 0); 1895 if (TREE_CODE (ob) == ADDR_EXPR) 1896 { 1897 dump_expr (TREE_OPERAND (ob, 0), flags | TFF_EXPR_IN_PARENS); 1898 pp_cxx_dot (cxx_pp); 1899 } 1900 else if (TREE_CODE (ob) != PARM_DECL 1901 || strcmp (IDENTIFIER_POINTER (DECL_NAME (ob)), "this")) 1902 { 1903 dump_expr (ob, flags | TFF_EXPR_IN_PARENS); 1904 pp_cxx_arrow (cxx_pp); 1905 } 1906 skipfirst = true; 1907 } 1908 dump_expr (fn, flags | TFF_EXPR_IN_PARENS); 1909 dump_call_expr_args (t, flags, skipfirst); 1910 } 1911 break; 1912 1913 case TARGET_EXPR: 1914 /* Note that this only works for G++ target exprs. If somebody 1915 builds a general TARGET_EXPR, there's no way to represent that 1916 it initializes anything other that the parameter slot for the 1917 default argument. Note we may have cleared out the first 1918 operand in expand_expr, so don't go killing ourselves. */ 1919 if (TREE_OPERAND (t, 1)) 1920 dump_expr (TREE_OPERAND (t, 1), flags | TFF_EXPR_IN_PARENS); 1921 break; 1922 1923 case POINTER_PLUS_EXPR: 1924 dump_binary_op ("+", t, flags); 1925 break; 1926 1927 case INIT_EXPR: 1928 case MODIFY_EXPR: 1929 dump_binary_op (assignment_operator_name_info[(int)NOP_EXPR].name, 1930 t, flags); 1931 break; 1932 1933 case PLUS_EXPR: 1934 case MINUS_EXPR: 1935 case MULT_EXPR: 1936 case TRUNC_DIV_EXPR: 1937 case TRUNC_MOD_EXPR: 1938 case MIN_EXPR: 1939 case MAX_EXPR: 1940 case LSHIFT_EXPR: 1941 case RSHIFT_EXPR: 1942 case BIT_IOR_EXPR: 1943 case BIT_XOR_EXPR: 1944 case BIT_AND_EXPR: 1945 case TRUTH_ANDIF_EXPR: 1946 case TRUTH_ORIF_EXPR: 1947 case LT_EXPR: 1948 case LE_EXPR: 1949 case GT_EXPR: 1950 case GE_EXPR: 1951 case EQ_EXPR: 1952 case NE_EXPR: 1953 case EXACT_DIV_EXPR: 1954 dump_binary_op (operator_name_info[(int) TREE_CODE (t)].name, t, flags); 1955 break; 1956 1957 case CEIL_DIV_EXPR: 1958 case FLOOR_DIV_EXPR: 1959 case ROUND_DIV_EXPR: 1960 case RDIV_EXPR: 1961 dump_binary_op ("/", t, flags); 1962 break; 1963 1964 case CEIL_MOD_EXPR: 1965 case FLOOR_MOD_EXPR: 1966 case ROUND_MOD_EXPR: 1967 dump_binary_op ("%", t, flags); 1968 break; 1969 1970 case COMPONENT_REF: 1971 { 1972 tree ob = TREE_OPERAND (t, 0); 1973 if (TREE_CODE (ob) == INDIRECT_REF) 1974 { 1975 ob = TREE_OPERAND (ob, 0); 1976 if (TREE_CODE (ob) != PARM_DECL 1977 || (DECL_NAME (ob) 1978 && strcmp (IDENTIFIER_POINTER (DECL_NAME (ob)), "this"))) 1979 { 1980 dump_expr (ob, flags | TFF_EXPR_IN_PARENS); 1981 if (TREE_CODE (TREE_TYPE (ob)) == REFERENCE_TYPE) 1982 pp_cxx_dot (cxx_pp); 1983 else 1984 pp_cxx_arrow (cxx_pp); 1985 } 1986 } 1987 else 1988 { 1989 dump_expr (ob, flags | TFF_EXPR_IN_PARENS); 1990 pp_cxx_dot (cxx_pp); 1991 } 1992 dump_expr (TREE_OPERAND (t, 1), flags & ~TFF_EXPR_IN_PARENS); 1993 } 1994 break; 1995 1996 case ARRAY_REF: 1997 dump_expr (TREE_OPERAND (t, 0), flags | TFF_EXPR_IN_PARENS); 1998 pp_cxx_left_bracket (cxx_pp); 1999 dump_expr (TREE_OPERAND (t, 1), flags | TFF_EXPR_IN_PARENS); 2000 pp_cxx_right_bracket (cxx_pp); 2001 break; 2002 2003 case UNARY_PLUS_EXPR: 2004 dump_unary_op ("+", t, flags); 2005 break; 2006 2007 case ADDR_EXPR: 2008 if (TREE_CODE (TREE_OPERAND (t, 0)) == FUNCTION_DECL 2009 || TREE_CODE (TREE_OPERAND (t, 0)) == STRING_CST 2010 /* An ADDR_EXPR can have reference type. In that case, we 2011 shouldn't print the `&' doing so indicates to the user 2012 that the expression has pointer type. */ 2013 || (TREE_TYPE (t) 2014 && TREE_CODE (TREE_TYPE (t)) == REFERENCE_TYPE)) 2015 dump_expr (TREE_OPERAND (t, 0), flags | TFF_EXPR_IN_PARENS); 2016 else if (TREE_CODE (TREE_OPERAND (t, 0)) == LABEL_DECL) 2017 dump_unary_op ("&&", t, flags); 2018 else 2019 dump_unary_op ("&", t, flags); 2020 break; 2021 2022 case INDIRECT_REF: 2023 if (TREE_HAS_CONSTRUCTOR (t)) 2024 { 2025 t = TREE_OPERAND (t, 0); 2026 gcc_assert (TREE_CODE (t) == CALL_EXPR); 2027 dump_expr (CALL_EXPR_FN (t), flags | TFF_EXPR_IN_PARENS); 2028 dump_call_expr_args (t, flags, true); 2029 } 2030 else 2031 { 2032 if (TREE_OPERAND (t,0) != NULL_TREE 2033 && TREE_TYPE (TREE_OPERAND (t, 0)) 2034 && NEXT_CODE (TREE_OPERAND (t, 0)) == REFERENCE_TYPE) 2035 dump_expr (TREE_OPERAND (t, 0), flags); 2036 else 2037 dump_unary_op ("*", t, flags); 2038 } 2039 break; 2040 2041 case MEM_REF: 2042 if (TREE_CODE (TREE_OPERAND (t, 0)) == ADDR_EXPR 2043 && integer_zerop (TREE_OPERAND (t, 1))) 2044 dump_expr (TREE_OPERAND (TREE_OPERAND (t, 0), 0), flags); 2045 else 2046 { 2047 pp_cxx_star (cxx_pp); 2048 if (!integer_zerop (TREE_OPERAND (t, 1))) 2049 { 2050 pp_cxx_left_paren (cxx_pp); 2051 if (!integer_onep (TYPE_SIZE_UNIT 2052 (TREE_TYPE (TREE_TYPE (TREE_OPERAND (t, 0)))))) 2053 { 2054 pp_cxx_left_paren (cxx_pp); 2055 dump_type (ptr_type_node, flags); 2056 pp_cxx_right_paren (cxx_pp); 2057 } 2058 } 2059 dump_expr (TREE_OPERAND (t, 0), flags); 2060 if (!integer_zerop (TREE_OPERAND (t, 1))) 2061 { 2062 pp_cxx_ws_string (cxx_pp, "+"); 2063 dump_expr (fold_convert (ssizetype, TREE_OPERAND (t, 1)), flags); 2064 pp_cxx_right_paren (cxx_pp); 2065 } 2066 } 2067 break; 2068 2069 case NEGATE_EXPR: 2070 case BIT_NOT_EXPR: 2071 case TRUTH_NOT_EXPR: 2072 case PREDECREMENT_EXPR: 2073 case PREINCREMENT_EXPR: 2074 dump_unary_op (operator_name_info [(int)TREE_CODE (t)].name, t, flags); 2075 break; 2076 2077 case POSTDECREMENT_EXPR: 2078 case POSTINCREMENT_EXPR: 2079 pp_cxx_left_paren (cxx_pp); 2080 dump_expr (TREE_OPERAND (t, 0), flags | TFF_EXPR_IN_PARENS); 2081 pp_cxx_ws_string (cxx_pp, operator_name_info[(int)TREE_CODE (t)].name); 2082 pp_cxx_right_paren (cxx_pp); 2083 break; 2084 2085 case NON_LVALUE_EXPR: 2086 /* FIXME: This is a KLUDGE workaround for a parsing problem. There 2087 should be another level of INDIRECT_REF so that I don't have to do 2088 this. */ 2089 if (TREE_TYPE (t) != NULL_TREE && NEXT_CODE (t) == POINTER_TYPE) 2090 { 2091 tree next = TREE_TYPE (TREE_TYPE (t)); 2092 2093 while (TREE_CODE (next) == POINTER_TYPE) 2094 next = TREE_TYPE (next); 2095 2096 if (TREE_CODE (next) == FUNCTION_TYPE) 2097 { 2098 if (flags & TFF_EXPR_IN_PARENS) 2099 pp_cxx_left_paren (cxx_pp); 2100 pp_cxx_star (cxx_pp); 2101 dump_expr (TREE_OPERAND (t, 0), flags & ~TFF_EXPR_IN_PARENS); 2102 if (flags & TFF_EXPR_IN_PARENS) 2103 pp_cxx_right_paren (cxx_pp); 2104 break; 2105 } 2106 /* Else fall through. */ 2107 } 2108 dump_expr (TREE_OPERAND (t, 0), flags | TFF_EXPR_IN_PARENS); 2109 break; 2110 2111 CASE_CONVERT: 2112 case IMPLICIT_CONV_EXPR: 2113 case VIEW_CONVERT_EXPR: 2114 { 2115 tree op = TREE_OPERAND (t, 0); 2116 tree ttype = TREE_TYPE (t); 2117 tree optype = TREE_TYPE (op); 2118 2119 if (TREE_CODE (ttype) != TREE_CODE (optype) 2120 && POINTER_TYPE_P (ttype) 2121 && POINTER_TYPE_P (optype) 2122 && same_type_p (TREE_TYPE (optype), 2123 TREE_TYPE (ttype))) 2124 { 2125 if (TREE_CODE (ttype) == REFERENCE_TYPE) 2126 dump_unary_op ("*", t, flags); 2127 else 2128 dump_unary_op ("&", t, flags); 2129 } 2130 else if (!same_type_p (TREE_TYPE (op), TREE_TYPE (t))) 2131 { 2132 /* It is a cast, but we cannot tell whether it is a 2133 reinterpret or static cast. Use the C style notation. */ 2134 if (flags & TFF_EXPR_IN_PARENS) 2135 pp_cxx_left_paren (cxx_pp); 2136 pp_cxx_left_paren (cxx_pp); 2137 dump_type (TREE_TYPE (t), flags); 2138 pp_cxx_right_paren (cxx_pp); 2139 dump_expr (op, flags | TFF_EXPR_IN_PARENS); 2140 if (flags & TFF_EXPR_IN_PARENS) 2141 pp_cxx_right_paren (cxx_pp); 2142 } 2143 else 2144 dump_expr (op, flags); 2145 break; 2146 } 2147 2148 case CONSTRUCTOR: 2149 if (TREE_TYPE (t) && TYPE_PTRMEMFUNC_P (TREE_TYPE (t))) 2150 { 2151 tree idx = build_ptrmemfunc_access_expr (t, pfn_identifier); 2152 2153 if (integer_zerop (idx)) 2154 { 2155 /* A NULL pointer-to-member constant. */ 2156 pp_cxx_left_paren (cxx_pp); 2157 pp_cxx_left_paren (cxx_pp); 2158 dump_type (TREE_TYPE (t), flags); 2159 pp_cxx_right_paren (cxx_pp); 2160 pp_character (cxx_pp, '0'); 2161 pp_cxx_right_paren (cxx_pp); 2162 break; 2163 } 2164 else if (host_integerp (idx, 0)) 2165 { 2166 tree virtuals; 2167 unsigned HOST_WIDE_INT n; 2168 2169 t = TREE_TYPE (TYPE_PTRMEMFUNC_FN_TYPE (TREE_TYPE (t))); 2170 t = TYPE_METHOD_BASETYPE (t); 2171 virtuals = BINFO_VIRTUALS (TYPE_BINFO (TYPE_MAIN_VARIANT (t))); 2172 2173 n = tree_low_cst (idx, 0); 2174 2175 /* Map vtable index back one, to allow for the null pointer to 2176 member. */ 2177 --n; 2178 2179 while (n > 0 && virtuals) 2180 { 2181 --n; 2182 virtuals = TREE_CHAIN (virtuals); 2183 } 2184 if (virtuals) 2185 { 2186 dump_expr (BV_FN (virtuals), 2187 flags | TFF_EXPR_IN_PARENS); 2188 break; 2189 } 2190 } 2191 } 2192 if (TREE_TYPE (t) && LAMBDA_TYPE_P (TREE_TYPE (t))) 2193 pp_string (cxx_pp, "<lambda closure object>"); 2194 if (TREE_TYPE (t) && EMPTY_CONSTRUCTOR_P (t)) 2195 { 2196 dump_type (TREE_TYPE (t), 0); 2197 pp_cxx_left_paren (cxx_pp); 2198 pp_cxx_right_paren (cxx_pp); 2199 } 2200 else 2201 { 2202 if (!BRACE_ENCLOSED_INITIALIZER_P (t)) 2203 dump_type (TREE_TYPE (t), 0); 2204 pp_cxx_left_brace (cxx_pp); 2205 dump_expr_init_vec (CONSTRUCTOR_ELTS (t), flags); 2206 pp_cxx_right_brace (cxx_pp); 2207 } 2208 2209 break; 2210 2211 case OFFSET_REF: 2212 { 2213 tree ob = TREE_OPERAND (t, 0); 2214 if (is_dummy_object (ob)) 2215 { 2216 t = TREE_OPERAND (t, 1); 2217 if (TREE_CODE (t) == FUNCTION_DECL) 2218 /* A::f */ 2219 dump_expr (t, flags | TFF_EXPR_IN_PARENS); 2220 else if (BASELINK_P (t)) 2221 dump_expr (OVL_CURRENT (BASELINK_FUNCTIONS (t)), 2222 flags | TFF_EXPR_IN_PARENS); 2223 else 2224 dump_decl (t, flags); 2225 } 2226 else 2227 { 2228 if (TREE_CODE (ob) == INDIRECT_REF) 2229 { 2230 dump_expr (TREE_OPERAND (ob, 0), flags | TFF_EXPR_IN_PARENS); 2231 pp_cxx_arrow (cxx_pp); 2232 pp_cxx_star (cxx_pp); 2233 } 2234 else 2235 { 2236 dump_expr (ob, flags | TFF_EXPR_IN_PARENS); 2237 pp_cxx_dot (cxx_pp); 2238 pp_cxx_star (cxx_pp); 2239 } 2240 dump_expr (TREE_OPERAND (t, 1), flags | TFF_EXPR_IN_PARENS); 2241 } 2242 break; 2243 } 2244 2245 case TEMPLATE_PARM_INDEX: 2246 dump_decl (TEMPLATE_PARM_DECL (t), flags & ~TFF_DECL_SPECIFIERS); 2247 break; 2248 2249 case CAST_EXPR: 2250 if (TREE_OPERAND (t, 0) == NULL_TREE 2251 || TREE_CHAIN (TREE_OPERAND (t, 0))) 2252 { 2253 dump_type (TREE_TYPE (t), flags); 2254 pp_cxx_left_paren (cxx_pp); 2255 dump_expr_list (TREE_OPERAND (t, 0), flags); 2256 pp_cxx_right_paren (cxx_pp); 2257 } 2258 else 2259 { 2260 pp_cxx_left_paren (cxx_pp); 2261 dump_type (TREE_TYPE (t), flags); 2262 pp_cxx_right_paren (cxx_pp); 2263 pp_cxx_left_paren (cxx_pp); 2264 dump_expr_list (TREE_OPERAND (t, 0), flags); 2265 pp_cxx_right_paren (cxx_pp); 2266 } 2267 break; 2268 2269 case STATIC_CAST_EXPR: 2270 pp_cxx_ws_string (cxx_pp, "static_cast"); 2271 goto cast; 2272 case REINTERPRET_CAST_EXPR: 2273 pp_cxx_ws_string (cxx_pp, "reinterpret_cast"); 2274 goto cast; 2275 case CONST_CAST_EXPR: 2276 pp_cxx_ws_string (cxx_pp, "const_cast"); 2277 goto cast; 2278 case DYNAMIC_CAST_EXPR: 2279 pp_cxx_ws_string (cxx_pp, "dynamic_cast"); 2280 cast: 2281 pp_cxx_begin_template_argument_list (cxx_pp); 2282 dump_type (TREE_TYPE (t), flags); 2283 pp_cxx_end_template_argument_list (cxx_pp); 2284 pp_cxx_left_paren (cxx_pp); 2285 dump_expr (TREE_OPERAND (t, 0), flags); 2286 pp_cxx_right_paren (cxx_pp); 2287 break; 2288 2289 case ARROW_EXPR: 2290 dump_expr (TREE_OPERAND (t, 0), flags); 2291 pp_cxx_arrow (cxx_pp); 2292 break; 2293 2294 case SIZEOF_EXPR: 2295 case ALIGNOF_EXPR: 2296 if (TREE_CODE (t) == SIZEOF_EXPR) 2297 pp_cxx_ws_string (cxx_pp, "sizeof"); 2298 else 2299 { 2300 gcc_assert (TREE_CODE (t) == ALIGNOF_EXPR); 2301 pp_cxx_ws_string (cxx_pp, "__alignof__"); 2302 } 2303 pp_cxx_whitespace (cxx_pp); 2304 pp_cxx_left_paren (cxx_pp); 2305 if (TYPE_P (TREE_OPERAND (t, 0))) 2306 dump_type (TREE_OPERAND (t, 0), flags); 2307 else 2308 dump_expr (TREE_OPERAND (t, 0), flags); 2309 pp_cxx_right_paren (cxx_pp); 2310 break; 2311 2312 case AT_ENCODE_EXPR: 2313 pp_cxx_ws_string (cxx_pp, "@encode"); 2314 pp_cxx_whitespace (cxx_pp); 2315 pp_cxx_left_paren (cxx_pp); 2316 dump_type (TREE_OPERAND (t, 0), flags); 2317 pp_cxx_right_paren (cxx_pp); 2318 break; 2319 2320 case NOEXCEPT_EXPR: 2321 pp_cxx_ws_string (cxx_pp, "noexcept"); 2322 pp_cxx_whitespace (cxx_pp); 2323 pp_cxx_left_paren (cxx_pp); 2324 dump_expr (TREE_OPERAND (t, 0), flags); 2325 pp_cxx_right_paren (cxx_pp); 2326 break; 2327 2328 case REALPART_EXPR: 2329 case IMAGPART_EXPR: 2330 pp_cxx_ws_string (cxx_pp, operator_name_info[TREE_CODE (t)].name); 2331 pp_cxx_whitespace (cxx_pp); 2332 dump_expr (TREE_OPERAND (t, 0), flags); 2333 break; 2334 2335 case DEFAULT_ARG: 2336 pp_string (cxx_pp, M_("<unparsed>")); 2337 break; 2338 2339 case TRY_CATCH_EXPR: 2340 case WITH_CLEANUP_EXPR: 2341 case CLEANUP_POINT_EXPR: 2342 dump_expr (TREE_OPERAND (t, 0), flags); 2343 break; 2344 2345 case PSEUDO_DTOR_EXPR: 2346 dump_expr (TREE_OPERAND (t, 2), flags); 2347 pp_cxx_dot (cxx_pp); 2348 dump_type (TREE_OPERAND (t, 0), flags); 2349 pp_cxx_colon_colon (cxx_pp); 2350 pp_cxx_complement (cxx_pp); 2351 dump_type (TREE_OPERAND (t, 1), flags); 2352 break; 2353 2354 case TEMPLATE_ID_EXPR: 2355 dump_decl (t, flags); 2356 break; 2357 2358 case BIND_EXPR: 2359 case STMT_EXPR: 2360 case EXPR_STMT: 2361 case STATEMENT_LIST: 2362 /* We don't yet have a way of dumping statements in a 2363 human-readable format. */ 2364 pp_string (cxx_pp, "({...})"); 2365 break; 2366 2367 case LOOP_EXPR: 2368 pp_string (cxx_pp, "while (1) { "); 2369 dump_expr (TREE_OPERAND (t, 0), flags & ~TFF_EXPR_IN_PARENS); 2370 pp_cxx_right_brace (cxx_pp); 2371 break; 2372 2373 case EXIT_EXPR: 2374 pp_string (cxx_pp, "if ("); 2375 dump_expr (TREE_OPERAND (t, 0), flags & ~TFF_EXPR_IN_PARENS); 2376 pp_string (cxx_pp, ") break; "); 2377 break; 2378 2379 case BASELINK: 2380 dump_expr (BASELINK_FUNCTIONS (t), flags & ~TFF_EXPR_IN_PARENS); 2381 break; 2382 2383 case EMPTY_CLASS_EXPR: 2384 dump_type (TREE_TYPE (t), flags); 2385 pp_cxx_left_paren (cxx_pp); 2386 pp_cxx_right_paren (cxx_pp); 2387 break; 2388 2389 case NON_DEPENDENT_EXPR: 2390 dump_expr (TREE_OPERAND (t, 0), flags); 2391 break; 2392 2393 case ARGUMENT_PACK_SELECT: 2394 dump_template_argument (ARGUMENT_PACK_SELECT_FROM_PACK (t), flags); 2395 break; 2396 2397 case RECORD_TYPE: 2398 case UNION_TYPE: 2399 case ENUMERAL_TYPE: 2400 case REAL_TYPE: 2401 case VOID_TYPE: 2402 case BOOLEAN_TYPE: 2403 case INTEGER_TYPE: 2404 case COMPLEX_TYPE: 2405 case VECTOR_TYPE: 2406 pp_type_specifier_seq (cxx_pp, t); 2407 break; 2408 2409 case TYPENAME_TYPE: 2410 /* We get here when we want to print a dependent type as an 2411 id-expression, without any disambiguator decoration. */ 2412 pp_id_expression (cxx_pp, t); 2413 break; 2414 2415 case TEMPLATE_TYPE_PARM: 2416 case TEMPLATE_TEMPLATE_PARM: 2417 case BOUND_TEMPLATE_TEMPLATE_PARM: 2418 dump_type (t, flags); 2419 break; 2420 2421 case TRAIT_EXPR: 2422 pp_cxx_trait_expression (cxx_pp, t); 2423 break; 2424 2425 case VA_ARG_EXPR: 2426 pp_cxx_va_arg_expression (cxx_pp, t); 2427 break; 2428 2429 case OFFSETOF_EXPR: 2430 pp_cxx_offsetof_expression (cxx_pp, t); 2431 break; 2432 2433 case SCOPE_REF: 2434 dump_decl (t, flags); 2435 break; 2436 2437 case EXPR_PACK_EXPANSION: 2438 case TYPEID_EXPR: 2439 case MEMBER_REF: 2440 case DOTSTAR_EXPR: 2441 case NEW_EXPR: 2442 case VEC_NEW_EXPR: 2443 case DELETE_EXPR: 2444 case VEC_DELETE_EXPR: 2445 case MODOP_EXPR: 2446 case ABS_EXPR: 2447 case CONJ_EXPR: 2448 case VECTOR_CST: 2449 case FIXED_CST: 2450 case UNORDERED_EXPR: 2451 case ORDERED_EXPR: 2452 case UNLT_EXPR: 2453 case UNLE_EXPR: 2454 case UNGT_EXPR: 2455 case UNGE_EXPR: 2456 case UNEQ_EXPR: 2457 case LTGT_EXPR: 2458 case COMPLEX_EXPR: 2459 case BIT_FIELD_REF: 2460 case FIX_TRUNC_EXPR: 2461 case FLOAT_EXPR: 2462 pp_expression (cxx_pp, t); 2463 break; 2464 2465 case TRUTH_AND_EXPR: 2466 case TRUTH_OR_EXPR: 2467 case TRUTH_XOR_EXPR: 2468 if (flags & TFF_EXPR_IN_PARENS) 2469 pp_cxx_left_paren (cxx_pp); 2470 pp_expression (cxx_pp, t); 2471 if (flags & TFF_EXPR_IN_PARENS) 2472 pp_cxx_right_paren (cxx_pp); 2473 break; 2474 2475 case OBJ_TYPE_REF: 2476 dump_expr (resolve_virtual_fun_from_obj_type_ref (t), flags); 2477 break; 2478 2479 /* This list is incomplete, but should suffice for now. 2480 It is very important that `sorry' does not call 2481 `report_error_function'. That could cause an infinite loop. */ 2482 default: 2483 pp_unsupported_tree (cxx_pp, t); 2484 /* fall through to ERROR_MARK... */ 2485 case ERROR_MARK: 2486 pp_string (cxx_pp, M_("<expression error>")); 2487 break; 2488 } 2489 } 2490 2491 static void 2492 dump_binary_op (const char *opstring, tree t, int flags) 2493 { 2494 pp_cxx_left_paren (cxx_pp); 2495 dump_expr (TREE_OPERAND (t, 0), flags | TFF_EXPR_IN_PARENS); 2496 pp_cxx_whitespace (cxx_pp); 2497 if (opstring) 2498 pp_cxx_ws_string (cxx_pp, opstring); 2499 else 2500 pp_string (cxx_pp, M_("<unknown operator>")); 2501 pp_cxx_whitespace (cxx_pp); 2502 dump_expr (TREE_OPERAND (t, 1), flags | TFF_EXPR_IN_PARENS); 2503 pp_cxx_right_paren (cxx_pp); 2504 } 2505 2506 static void 2507 dump_unary_op (const char *opstring, tree t, int flags) 2508 { 2509 if (flags & TFF_EXPR_IN_PARENS) 2510 pp_cxx_left_paren (cxx_pp); 2511 pp_cxx_ws_string (cxx_pp, opstring); 2512 dump_expr (TREE_OPERAND (t, 0), flags & ~TFF_EXPR_IN_PARENS); 2513 if (flags & TFF_EXPR_IN_PARENS) 2514 pp_cxx_right_paren (cxx_pp); 2515 } 2516 2517 static void 2518 reinit_cxx_pp (void) 2519 { 2520 pp_clear_output_area (cxx_pp); 2521 pp_base (cxx_pp)->padding = pp_none; 2522 pp_indentation (cxx_pp) = 0; 2523 pp_needs_newline (cxx_pp) = false; 2524 cxx_pp->enclosing_scope = current_function_decl; 2525 } 2526 2527 2528 /* Exported interface to stringifying types, exprs and decls under TFF_* 2529 control. */ 2530 2531 const char * 2532 type_as_string (tree typ, int flags) 2533 { 2534 reinit_cxx_pp (); 2535 pp_translate_identifiers (cxx_pp) = false; 2536 dump_type (typ, flags); 2537 return pp_formatted_text (cxx_pp); 2538 } 2539 2540 const char * 2541 type_as_string_translate (tree typ, int flags) 2542 { 2543 reinit_cxx_pp (); 2544 dump_type (typ, flags); 2545 return pp_formatted_text (cxx_pp); 2546 } 2547 2548 const char * 2549 expr_as_string (tree decl, int flags) 2550 { 2551 reinit_cxx_pp (); 2552 pp_translate_identifiers (cxx_pp) = false; 2553 dump_expr (decl, flags); 2554 return pp_formatted_text (cxx_pp); 2555 } 2556 2557 const char * 2558 decl_as_string (tree decl, int flags) 2559 { 2560 reinit_cxx_pp (); 2561 pp_translate_identifiers (cxx_pp) = false; 2562 dump_decl (decl, flags); 2563 return pp_formatted_text (cxx_pp); 2564 } 2565 2566 const char * 2567 decl_as_string_translate (tree decl, int flags) 2568 { 2569 reinit_cxx_pp (); 2570 dump_decl (decl, flags); 2571 return pp_formatted_text (cxx_pp); 2572 } 2573 2574 /* Generate the three forms of printable names for cxx_printable_name. */ 2575 2576 const char * 2577 lang_decl_name (tree decl, int v, bool translate) 2578 { 2579 if (v >= 2) 2580 return (translate 2581 ? decl_as_string_translate (decl, TFF_DECL_SPECIFIERS) 2582 : decl_as_string (decl, TFF_DECL_SPECIFIERS)); 2583 2584 reinit_cxx_pp (); 2585 pp_translate_identifiers (cxx_pp) = translate; 2586 if (v == 1 2587 && (DECL_CLASS_SCOPE_P (decl) 2588 || (DECL_NAMESPACE_SCOPE_P (decl) 2589 && CP_DECL_CONTEXT (decl) != global_namespace))) 2590 { 2591 dump_type (CP_DECL_CONTEXT (decl), TFF_PLAIN_IDENTIFIER); 2592 pp_cxx_colon_colon (cxx_pp); 2593 } 2594 2595 if (TREE_CODE (decl) == FUNCTION_DECL) 2596 dump_function_name (decl, TFF_PLAIN_IDENTIFIER); 2597 else 2598 dump_decl (DECL_NAME (decl), TFF_PLAIN_IDENTIFIER); 2599 2600 return pp_formatted_text (cxx_pp); 2601 } 2602 2603 /* Return the location of a tree passed to %+ formats. */ 2604 2605 location_t 2606 location_of (tree t) 2607 { 2608 if (TREE_CODE (t) == PARM_DECL && DECL_CONTEXT (t)) 2609 t = DECL_CONTEXT (t); 2610 else if (TYPE_P (t)) 2611 { 2612 t = TYPE_MAIN_DECL (t); 2613 if (t == NULL_TREE) 2614 return input_location; 2615 } 2616 else if (TREE_CODE (t) == OVERLOAD) 2617 t = OVL_FUNCTION (t); 2618 2619 if (DECL_P (t)) 2620 return DECL_SOURCE_LOCATION (t); 2621 return EXPR_LOC_OR_HERE (t); 2622 } 2623 2624 /* Now the interfaces from error et al to dump_type et al. Each takes an 2625 on/off VERBOSE flag and supply the appropriate TFF_ flags to a dump_ 2626 function. */ 2627 2628 static const char * 2629 decl_to_string (tree decl, int verbose) 2630 { 2631 int flags = 0; 2632 2633 if (TREE_CODE (decl) == TYPE_DECL || TREE_CODE (decl) == RECORD_TYPE 2634 || TREE_CODE (decl) == UNION_TYPE || TREE_CODE (decl) == ENUMERAL_TYPE) 2635 flags = TFF_CLASS_KEY_OR_ENUM; 2636 if (verbose) 2637 flags |= TFF_DECL_SPECIFIERS; 2638 else if (TREE_CODE (decl) == FUNCTION_DECL) 2639 flags |= TFF_DECL_SPECIFIERS | TFF_RETURN_TYPE; 2640 flags |= TFF_TEMPLATE_HEADER; 2641 2642 reinit_cxx_pp (); 2643 dump_decl (decl, flags); 2644 return pp_formatted_text (cxx_pp); 2645 } 2646 2647 static const char * 2648 expr_to_string (tree decl) 2649 { 2650 reinit_cxx_pp (); 2651 dump_expr (decl, 0); 2652 return pp_formatted_text (cxx_pp); 2653 } 2654 2655 static const char * 2656 fndecl_to_string (tree fndecl, int verbose) 2657 { 2658 int flags; 2659 2660 flags = TFF_EXCEPTION_SPECIFICATION | TFF_DECL_SPECIFIERS 2661 | TFF_TEMPLATE_HEADER; 2662 if (verbose) 2663 flags |= TFF_FUNCTION_DEFAULT_ARGUMENTS; 2664 reinit_cxx_pp (); 2665 dump_decl (fndecl, flags); 2666 return pp_formatted_text (cxx_pp); 2667 } 2668 2669 2670 static const char * 2671 code_to_string (enum tree_code c) 2672 { 2673 return tree_code_name [c]; 2674 } 2675 2676 const char * 2677 language_to_string (enum languages c) 2678 { 2679 switch (c) 2680 { 2681 case lang_c: 2682 return "C"; 2683 2684 case lang_cplusplus: 2685 return "C++"; 2686 2687 case lang_java: 2688 return "Java"; 2689 2690 default: 2691 gcc_unreachable (); 2692 } 2693 return NULL; 2694 } 2695 2696 /* Return the proper printed version of a parameter to a C++ function. */ 2697 2698 static const char * 2699 parm_to_string (int p) 2700 { 2701 reinit_cxx_pp (); 2702 if (p < 0) 2703 pp_string (cxx_pp, "'this'"); 2704 else 2705 pp_decimal_int (cxx_pp, p + 1); 2706 return pp_formatted_text (cxx_pp); 2707 } 2708 2709 static const char * 2710 op_to_string (enum tree_code p) 2711 { 2712 tree id = operator_name_info[(int) p].identifier; 2713 return id ? IDENTIFIER_POINTER (id) : M_("<unknown>"); 2714 } 2715 2716 static const char * 2717 type_to_string (tree typ, int verbose) 2718 { 2719 int flags = 0; 2720 if (verbose) 2721 flags |= TFF_CLASS_KEY_OR_ENUM; 2722 flags |= TFF_TEMPLATE_HEADER; 2723 2724 reinit_cxx_pp (); 2725 dump_type (typ, flags); 2726 /* If we're printing a type that involves typedefs, also print the 2727 stripped version. But sometimes the stripped version looks 2728 exactly the same, so we don't want it after all. To avoid printing 2729 it in that case, we play ugly obstack games. */ 2730 if (typ && TYPE_P (typ) && typ != TYPE_CANONICAL (typ) 2731 && !uses_template_parms (typ)) 2732 { 2733 int aka_start; char *p; 2734 struct obstack *ob = pp_base (cxx_pp)->buffer->obstack; 2735 /* Remember the end of the initial dump. */ 2736 int len = obstack_object_size (ob); 2737 tree aka = strip_typedefs (typ); 2738 pp_string (cxx_pp, " {aka"); 2739 pp_cxx_whitespace (cxx_pp); 2740 /* And remember the start of the aka dump. */ 2741 aka_start = obstack_object_size (ob); 2742 dump_type (aka, flags); 2743 pp_character (cxx_pp, '}'); 2744 p = (char*)obstack_base (ob); 2745 /* If they are identical, cut off the aka with a NUL. */ 2746 if (memcmp (p, p+aka_start, len) == 0) 2747 p[len] = '\0'; 2748 } 2749 return pp_formatted_text (cxx_pp); 2750 } 2751 2752 static const char * 2753 assop_to_string (enum tree_code p) 2754 { 2755 tree id = assignment_operator_name_info[(int) p].identifier; 2756 return id ? IDENTIFIER_POINTER (id) : M_("{unknown}"); 2757 } 2758 2759 static const char * 2760 args_to_string (tree p, int verbose) 2761 { 2762 int flags = 0; 2763 if (verbose) 2764 flags |= TFF_CLASS_KEY_OR_ENUM; 2765 2766 if (p == NULL_TREE) 2767 return ""; 2768 2769 if (TYPE_P (TREE_VALUE (p))) 2770 return type_as_string_translate (p, flags); 2771 2772 reinit_cxx_pp (); 2773 for (; p; p = TREE_CHAIN (p)) 2774 { 2775 if (TREE_VALUE (p) == null_node) 2776 pp_cxx_ws_string (cxx_pp, "NULL"); 2777 else 2778 dump_type (error_type (TREE_VALUE (p)), flags); 2779 if (TREE_CHAIN (p)) 2780 pp_separate_with_comma (cxx_pp); 2781 } 2782 return pp_formatted_text (cxx_pp); 2783 } 2784 2785 /* Pretty-print a deduction substitution (from deduction_tsubst_fntype). P 2786 is a TREE_LIST with purpose the TEMPLATE_DECL, value the template 2787 arguments. */ 2788 2789 static const char * 2790 subst_to_string (tree p) 2791 { 2792 tree decl = TREE_PURPOSE (p); 2793 tree targs = TREE_VALUE (p); 2794 tree tparms = DECL_TEMPLATE_PARMS (decl); 2795 int flags = TFF_DECL_SPECIFIERS|TFF_TEMPLATE_HEADER; 2796 2797 if (p == NULL_TREE) 2798 return ""; 2799 2800 reinit_cxx_pp (); 2801 dump_template_decl (TREE_PURPOSE (p), flags); 2802 pp_cxx_whitespace (cxx_pp); 2803 pp_cxx_left_bracket (cxx_pp); 2804 pp_cxx_ws_string (cxx_pp, M_("with")); 2805 pp_cxx_whitespace (cxx_pp); 2806 dump_template_bindings (tparms, targs, NULL); 2807 pp_cxx_right_bracket (cxx_pp); 2808 return pp_formatted_text (cxx_pp); 2809 } 2810 2811 static const char * 2812 cv_to_string (tree p, int v) 2813 { 2814 reinit_cxx_pp (); 2815 pp_base (cxx_pp)->padding = v ? pp_before : pp_none; 2816 pp_cxx_cv_qualifier_seq (cxx_pp, p); 2817 return pp_formatted_text (cxx_pp); 2818 } 2819 2820 /* Langhook for print_error_function. */ 2821 void 2822 cxx_print_error_function (diagnostic_context *context, const char *file, 2823 diagnostic_info *diagnostic) 2824 { 2825 lhd_print_error_function (context, file, diagnostic); 2826 pp_base_set_prefix (context->printer, file); 2827 maybe_print_instantiation_context (context); 2828 } 2829 2830 static void 2831 cp_diagnostic_starter (diagnostic_context *context, 2832 diagnostic_info *diagnostic) 2833 { 2834 diagnostic_report_current_module (context, diagnostic->location); 2835 cp_print_error_function (context, diagnostic); 2836 maybe_print_instantiation_context (context); 2837 maybe_print_constexpr_context (context); 2838 pp_base_set_prefix (context->printer, diagnostic_build_prefix (context, 2839 diagnostic)); 2840 } 2841 2842 static void 2843 cp_diagnostic_finalizer (diagnostic_context *context, 2844 diagnostic_info *diagnostic) 2845 { 2846 virt_loc_aware_diagnostic_finalizer (context, diagnostic); 2847 pp_base_destroy_prefix (context->printer); 2848 } 2849 2850 /* Print current function onto BUFFER, in the process of reporting 2851 a diagnostic message. Called from cp_diagnostic_starter. */ 2852 static void 2853 cp_print_error_function (diagnostic_context *context, 2854 diagnostic_info *diagnostic) 2855 { 2856 /* If we are in an instantiation context, current_function_decl is likely 2857 to be wrong, so just rely on print_instantiation_full_context. */ 2858 if (current_instantiation ()) 2859 return; 2860 if (diagnostic_last_function_changed (context, diagnostic)) 2861 { 2862 const char *old_prefix = context->printer->prefix; 2863 const char *file = LOCATION_FILE (diagnostic->location); 2864 tree abstract_origin = diagnostic_abstract_origin (diagnostic); 2865 char *new_prefix = (file && abstract_origin == NULL) 2866 ? file_name_as_prefix (file) : NULL; 2867 2868 pp_base_set_prefix (context->printer, new_prefix); 2869 2870 if (current_function_decl == NULL) 2871 pp_base_string (context->printer, _("At global scope:")); 2872 else 2873 { 2874 tree fndecl, ao; 2875 2876 if (abstract_origin) 2877 { 2878 ao = BLOCK_ABSTRACT_ORIGIN (abstract_origin); 2879 while (TREE_CODE (ao) == BLOCK 2880 && BLOCK_ABSTRACT_ORIGIN (ao) 2881 && BLOCK_ABSTRACT_ORIGIN (ao) != ao) 2882 ao = BLOCK_ABSTRACT_ORIGIN (ao); 2883 gcc_assert (TREE_CODE (ao) == FUNCTION_DECL); 2884 fndecl = ao; 2885 } 2886 else 2887 fndecl = current_function_decl; 2888 2889 pp_printf (context->printer, function_category (fndecl), 2890 cxx_printable_name_translate (fndecl, 2)); 2891 2892 while (abstract_origin) 2893 { 2894 location_t *locus; 2895 tree block = abstract_origin; 2896 2897 locus = &BLOCK_SOURCE_LOCATION (block); 2898 fndecl = NULL; 2899 block = BLOCK_SUPERCONTEXT (block); 2900 while (block && TREE_CODE (block) == BLOCK 2901 && BLOCK_ABSTRACT_ORIGIN (block)) 2902 { 2903 ao = BLOCK_ABSTRACT_ORIGIN (block); 2904 2905 while (TREE_CODE (ao) == BLOCK 2906 && BLOCK_ABSTRACT_ORIGIN (ao) 2907 && BLOCK_ABSTRACT_ORIGIN (ao) != ao) 2908 ao = BLOCK_ABSTRACT_ORIGIN (ao); 2909 2910 if (TREE_CODE (ao) == FUNCTION_DECL) 2911 { 2912 fndecl = ao; 2913 break; 2914 } 2915 else if (TREE_CODE (ao) != BLOCK) 2916 break; 2917 2918 block = BLOCK_SUPERCONTEXT (block); 2919 } 2920 if (fndecl) 2921 abstract_origin = block; 2922 else 2923 { 2924 while (block && TREE_CODE (block) == BLOCK) 2925 block = BLOCK_SUPERCONTEXT (block); 2926 2927 if (block && TREE_CODE (block) == FUNCTION_DECL) 2928 fndecl = block; 2929 abstract_origin = NULL; 2930 } 2931 if (fndecl) 2932 { 2933 expanded_location s = expand_location (*locus); 2934 pp_base_character (context->printer, ','); 2935 pp_base_newline (context->printer); 2936 if (s.file != NULL) 2937 { 2938 if (context->show_column && s.column != 0) 2939 pp_printf (context->printer, 2940 _(" inlined from %qs at %s:%d:%d"), 2941 cxx_printable_name_translate (fndecl, 2), 2942 s.file, s.line, s.column); 2943 else 2944 pp_printf (context->printer, 2945 _(" inlined from %qs at %s:%d"), 2946 cxx_printable_name_translate (fndecl, 2), 2947 s.file, s.line); 2948 2949 } 2950 else 2951 pp_printf (context->printer, _(" inlined from %qs"), 2952 cxx_printable_name_translate (fndecl, 2)); 2953 } 2954 } 2955 pp_base_character (context->printer, ':'); 2956 } 2957 pp_base_newline (context->printer); 2958 2959 diagnostic_set_last_function (context, diagnostic); 2960 pp_base_destroy_prefix (context->printer); 2961 context->printer->prefix = old_prefix; 2962 } 2963 } 2964 2965 /* Returns a description of FUNCTION using standard terminology. The 2966 result is a format string of the form "In CATEGORY %qs". */ 2967 static const char * 2968 function_category (tree fn) 2969 { 2970 /* We can get called from the middle-end for diagnostics of function 2971 clones. Make sure we have language specific information before 2972 dereferencing it. */ 2973 if (DECL_LANG_SPECIFIC (STRIP_TEMPLATE (fn)) 2974 && DECL_FUNCTION_MEMBER_P (fn)) 2975 { 2976 if (DECL_STATIC_FUNCTION_P (fn)) 2977 return _("In static member function %qs"); 2978 else if (DECL_COPY_CONSTRUCTOR_P (fn)) 2979 return _("In copy constructor %qs"); 2980 else if (DECL_CONSTRUCTOR_P (fn)) 2981 return _("In constructor %qs"); 2982 else if (DECL_DESTRUCTOR_P (fn)) 2983 return _("In destructor %qs"); 2984 else if (LAMBDA_FUNCTION_P (fn)) 2985 return _("In lambda function"); 2986 else 2987 return _("In member function %qs"); 2988 } 2989 else 2990 return _("In function %qs"); 2991 } 2992 2993 /* Report the full context of a current template instantiation, 2994 onto BUFFER. */ 2995 static void 2996 print_instantiation_full_context (diagnostic_context *context) 2997 { 2998 struct tinst_level *p = current_instantiation (); 2999 location_t location = input_location; 3000 3001 if (p) 3002 { 3003 pp_verbatim (context->printer, 3004 TREE_CODE (p->decl) == TREE_LIST 3005 ? _("%s: In substitution of %qS:\n") 3006 : _("%s: In instantiation of %q#D:\n"), 3007 LOCATION_FILE (location), 3008 p->decl); 3009 3010 location = p->locus; 3011 p = p->next; 3012 } 3013 3014 print_instantiation_partial_context (context, p, location); 3015 } 3016 3017 /* Helper function of print_instantiation_partial_context() that 3018 prints a single line of instantiation context. */ 3019 3020 static void 3021 print_instantiation_partial_context_line (diagnostic_context *context, 3022 const struct tinst_level *t, 3023 location_t loc, bool recursive_p) 3024 { 3025 expanded_location xloc; 3026 xloc = expand_location (loc); 3027 3028 if (context->show_column) 3029 pp_verbatim (context->printer, _("%s:%d:%d: "), 3030 xloc.file, xloc.line, xloc.column); 3031 else 3032 pp_verbatim (context->printer, _("%s:%d: "), 3033 xloc.file, xloc.line); 3034 3035 if (t != NULL) 3036 { 3037 if (TREE_CODE (t->decl) == TREE_LIST) 3038 pp_verbatim (context->printer, 3039 recursive_p 3040 ? _("recursively required by substitution of %qS\n") 3041 : _("required by substitution of %qS\n"), 3042 t->decl); 3043 else 3044 pp_verbatim (context->printer, 3045 recursive_p 3046 ? _("recursively required from %q#D\n") 3047 : _("required from %q#D\n"), 3048 t->decl); 3049 } 3050 else 3051 { 3052 pp_verbatim (context->printer, 3053 recursive_p 3054 ? _("recursively required from here") 3055 : _("required from here")); 3056 } 3057 } 3058 3059 /* Same as print_instantiation_full_context but less verbose. */ 3060 3061 static void 3062 print_instantiation_partial_context (diagnostic_context *context, 3063 struct tinst_level *t0, location_t loc) 3064 { 3065 struct tinst_level *t; 3066 int n_total = 0; 3067 int n; 3068 location_t prev_loc = loc; 3069 3070 for (t = t0; t != NULL; t = t->next) 3071 if (prev_loc != t->locus) 3072 { 3073 prev_loc = t->locus; 3074 n_total++; 3075 } 3076 3077 t = t0; 3078 3079 if (n_total >= 12) 3080 { 3081 int skip = n_total - 10; 3082 for (n = 0; n < 5; n++) 3083 { 3084 gcc_assert (t != NULL); 3085 if (loc != t->locus) 3086 print_instantiation_partial_context_line (context, t, loc, 3087 /*recursive_p=*/false); 3088 loc = t->locus; 3089 t = t->next; 3090 } 3091 if (t != NULL && skip > 1) 3092 { 3093 expanded_location xloc; 3094 xloc = expand_location (loc); 3095 if (context->show_column) 3096 pp_verbatim (context->printer, 3097 _("%s:%d:%d: [ skipping %d instantiation contexts ]\n"), 3098 xloc.file, xloc.line, xloc.column, skip); 3099 else 3100 pp_verbatim (context->printer, 3101 _("%s:%d: [ skipping %d instantiation contexts ]\n"), 3102 xloc.file, xloc.line, skip); 3103 3104 do { 3105 loc = t->locus; 3106 t = t->next; 3107 } while (t != NULL && --skip > 0); 3108 } 3109 } 3110 3111 while (t != NULL) 3112 { 3113 while (t->next != NULL && t->locus == t->next->locus) 3114 { 3115 loc = t->locus; 3116 t = t->next; 3117 } 3118 print_instantiation_partial_context_line (context, t, loc, 3119 t->locus == loc); 3120 loc = t->locus; 3121 t = t->next; 3122 } 3123 print_instantiation_partial_context_line (context, NULL, loc, 3124 /*recursive_p=*/false); 3125 pp_base_newline (context->printer); 3126 } 3127 3128 /* Called from cp_thing to print the template context for an error. */ 3129 static void 3130 maybe_print_instantiation_context (diagnostic_context *context) 3131 { 3132 if (!problematic_instantiation_changed () || current_instantiation () == 0) 3133 return; 3134 3135 record_last_problematic_instantiation (); 3136 print_instantiation_full_context (context); 3137 } 3138 3139 /* Report the bare minimum context of a template instantiation. */ 3140 void 3141 print_instantiation_context (void) 3142 { 3143 print_instantiation_partial_context 3144 (global_dc, current_instantiation (), input_location); 3145 diagnostic_flush_buffer (global_dc); 3146 } 3147 3148 /* Report what constexpr call(s) we're trying to expand, if any. */ 3149 3150 void 3151 maybe_print_constexpr_context (diagnostic_context *context) 3152 { 3153 VEC(tree,heap) *call_stack = cx_error_context (); 3154 unsigned ix; 3155 tree t; 3156 3157 FOR_EACH_VEC_ELT (tree, call_stack, ix, t) 3158 { 3159 expanded_location xloc = expand_location (EXPR_LOCATION (t)); 3160 const char *s = expr_as_string (t, 0); 3161 if (context->show_column) 3162 pp_verbatim (context->printer, 3163 _("%s:%d:%d: in constexpr expansion of %qs"), 3164 xloc.file, xloc.line, xloc.column, s); 3165 else 3166 pp_verbatim (context->printer, 3167 _("%s:%d: in constexpr expansion of %qs"), 3168 xloc.file, xloc.line, s); 3169 pp_base_newline (context->printer); 3170 } 3171 } 3172 3173 /* Called from output_format -- during diagnostic message processing -- 3174 to handle C++ specific format specifier with the following meanings: 3175 %A function argument-list. 3176 %C tree code. 3177 %D declaration. 3178 %E expression. 3179 %F function declaration. 3180 %L language as used in extern "lang". 3181 %O binary operator. 3182 %P function parameter whose position is indicated by an integer. 3183 %Q assignment operator. 3184 %T type. 3185 %V cv-qualifier. */ 3186 static bool 3187 cp_printer (pretty_printer *pp, text_info *text, const char *spec, 3188 int precision, bool wide, bool set_locus, bool verbose) 3189 { 3190 const char *result; 3191 tree t = NULL; 3192 #define next_tree (t = va_arg (*text->args_ptr, tree)) 3193 #define next_tcode ((enum tree_code) va_arg (*text->args_ptr, int)) 3194 #define next_lang ((enum languages) va_arg (*text->args_ptr, int)) 3195 #define next_int va_arg (*text->args_ptr, int) 3196 3197 if (precision != 0 || wide) 3198 return false; 3199 3200 if (text->locus == NULL) 3201 set_locus = false; 3202 3203 switch (*spec) 3204 { 3205 case 'A': result = args_to_string (next_tree, verbose); break; 3206 case 'C': result = code_to_string (next_tcode); break; 3207 case 'D': 3208 { 3209 tree temp = next_tree; 3210 if (DECL_P (temp) 3211 && DECL_DEBUG_EXPR_IS_FROM (temp) && DECL_DEBUG_EXPR (temp)) 3212 { 3213 temp = DECL_DEBUG_EXPR (temp); 3214 if (!DECL_P (temp)) 3215 { 3216 result = expr_to_string (temp); 3217 break; 3218 } 3219 } 3220 result = decl_to_string (temp, verbose); 3221 } 3222 break; 3223 case 'E': result = expr_to_string (next_tree); break; 3224 case 'F': result = fndecl_to_string (next_tree, verbose); break; 3225 case 'L': result = language_to_string (next_lang); break; 3226 case 'O': result = op_to_string (next_tcode); break; 3227 case 'P': result = parm_to_string (next_int); break; 3228 case 'Q': result = assop_to_string (next_tcode); break; 3229 case 'S': result = subst_to_string (next_tree); break; 3230 case 'T': result = type_to_string (next_tree, verbose); break; 3231 case 'V': result = cv_to_string (next_tree, verbose); break; 3232 3233 case 'K': 3234 percent_K_format (text); 3235 return true; 3236 3237 default: 3238 return false; 3239 } 3240 3241 pp_base_string (pp, result); 3242 if (set_locus && t != NULL) 3243 *text->locus = location_of (t); 3244 return true; 3245 #undef next_tree 3246 #undef next_tcode 3247 #undef next_lang 3248 #undef next_int 3249 } 3250 3251 /* Warn about the use of C++0x features when appropriate. */ 3252 void 3253 maybe_warn_cpp0x (cpp0x_warn_str str) 3254 { 3255 if ((cxx_dialect == cxx98) && !in_system_header) 3256 /* We really want to suppress this warning in system headers, 3257 because libstdc++ uses variadic templates even when we aren't 3258 in C++0x mode. */ 3259 switch (str) 3260 { 3261 case CPP0X_INITIALIZER_LISTS: 3262 pedwarn (input_location, 0, 3263 "extended initializer lists " 3264 "only available with -std=c++11 or -std=gnu++11"); 3265 break; 3266 case CPP0X_EXPLICIT_CONVERSION: 3267 pedwarn (input_location, 0, 3268 "explicit conversion operators " 3269 "only available with -std=c++11 or -std=gnu++11"); 3270 break; 3271 case CPP0X_VARIADIC_TEMPLATES: 3272 pedwarn (input_location, 0, 3273 "variadic templates " 3274 "only available with -std=c++11 or -std=gnu++11"); 3275 break; 3276 case CPP0X_LAMBDA_EXPR: 3277 pedwarn (input_location, 0, 3278 "lambda expressions " 3279 "only available with -std=c++11 or -std=gnu++11"); 3280 break; 3281 case CPP0X_AUTO: 3282 pedwarn (input_location, 0, 3283 "C++0x auto only available with -std=c++11 or -std=gnu++11"); 3284 break; 3285 case CPP0X_SCOPED_ENUMS: 3286 pedwarn (input_location, 0, 3287 "scoped enums only available with -std=c++11 or -std=gnu++11"); 3288 break; 3289 case CPP0X_DEFAULTED_DELETED: 3290 pedwarn (input_location, 0, 3291 "defaulted and deleted functions " 3292 "only available with -std=c++11 or -std=gnu++11"); 3293 break; 3294 case CPP0X_INLINE_NAMESPACES: 3295 pedwarn (input_location, OPT_pedantic, 3296 "inline namespaces " 3297 "only available with -std=c++11 or -std=gnu++11"); 3298 break; 3299 case CPP0X_OVERRIDE_CONTROLS: 3300 pedwarn (input_location, 0, 3301 "override controls (override/final) " 3302 "only available with -std=c++11 or -std=gnu++11"); 3303 break; 3304 case CPP0X_NSDMI: 3305 pedwarn (input_location, 0, 3306 "non-static data member initializers " 3307 "only available with -std=c++11 or -std=gnu++11"); 3308 break; 3309 case CPP0X_USER_DEFINED_LITERALS: 3310 pedwarn (input_location, 0, 3311 "user-defined literals " 3312 "only available with -std=c++11 or -std=gnu++11"); 3313 break; 3314 case CPP0X_DELEGATING_CTORS: 3315 pedwarn (input_location, 0, 3316 "delegating constructors " 3317 "only available with -std=c++11 or -std=gnu++11"); 3318 break; 3319 default: 3320 gcc_unreachable (); 3321 } 3322 } 3323 3324 /* Warn about the use of variadic templates when appropriate. */ 3325 void 3326 maybe_warn_variadic_templates (void) 3327 { 3328 maybe_warn_cpp0x (CPP0X_VARIADIC_TEMPLATES); 3329 } 3330 3331 3332 /* Issue an ISO C++98 pedantic warning at LOCATION, conditional on 3333 option OPT with text GMSGID. Use this function to report 3334 diagnostics for constructs that are invalid C++98, but valid 3335 C++0x. */ 3336 bool 3337 pedwarn_cxx98 (location_t location, int opt, const char *gmsgid, ...) 3338 { 3339 diagnostic_info diagnostic; 3340 va_list ap; 3341 3342 va_start (ap, gmsgid); 3343 diagnostic_set_info (&diagnostic, gmsgid, &ap, location, 3344 (cxx_dialect == cxx98) ? DK_PEDWARN : DK_WARNING); 3345 diagnostic.option_index = opt; 3346 va_end (ap); 3347 return report_diagnostic (&diagnostic); 3348 } 3349 3350 /* Issue a diagnostic that NAME cannot be found in SCOPE. DECL is what 3351 we found when we tried to do the lookup. LOCATION is the location of 3352 the NAME identifier. */ 3353 3354 void 3355 qualified_name_lookup_error (tree scope, tree name, 3356 tree decl, location_t location) 3357 { 3358 if (scope == error_mark_node) 3359 ; /* We already complained. */ 3360 else if (TYPE_P (scope)) 3361 { 3362 if (!COMPLETE_TYPE_P (scope)) 3363 error_at (location, "incomplete type %qT used in nested name specifier", 3364 scope); 3365 else if (TREE_CODE (decl) == TREE_LIST) 3366 { 3367 error_at (location, "reference to %<%T::%D%> is ambiguous", 3368 scope, name); 3369 print_candidates (decl); 3370 } 3371 else 3372 error_at (location, "%qD is not a member of %qT", name, scope); 3373 } 3374 else if (scope != global_namespace) 3375 { 3376 error_at (location, "%qD is not a member of %qD", name, scope); 3377 suggest_alternatives_for (location, name); 3378 } 3379 else 3380 { 3381 error_at (location, "%<::%D%> has not been declared", name); 3382 suggest_alternatives_for (location, name); 3383 } 3384 } 3385