formats/ctf/metadata/ctf-parser.y

   1 %{
   2 /*
   3  * ctf-parser.y
   4  *
   5  * Common Trace Format Metadata Grammar.
   6  *
   7  * Copyright 2010 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
   8  *
   9  * Permission is hereby granted, free of charge, to any person obtaining a copy
  10  * of this software and associated documentation files (the "Software"), to deal
  11  * in the Software without restriction, including without limitation the rights
  12  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  13  * copies of the Software, and to permit persons to whom the Software is
  14  * furnished to do so, subject to the following conditions:
  15  *
  16  * The above copyright notice and this permission notice shall be included in
  17  * all copies or substantial portions of the Software.
  18  */
  19
  20 #include <stdio.h>
  21 #include <unistd.h>
  22 #include <string.h>
  23 #include <stdlib.h>
  24 #include <assert.h>
  25 #include <glib.h>
  26 #include <errno.h>
  27 #include <inttypes.h>
  28 #include <babeltrace/list.h>
  29 #include "ctf-scanner.h"
  30 #include "ctf-parser.h"
  31 #include "ctf-ast.h"
  32
  33 /*
  34  * TODO: support enum, variant and struct declarations in scopes.
  35  */
  36
  37 /* Join two lists, put "add" at the end of "head".  */
  38 static inline void
  39 _cds_list_splice_tail (struct cds_list_head *add, struct cds_list_head *head)
  40 {
  41         /* Do nothing if the list which gets added is empty.  */
  42         if (add != add->next) {
  43                 add->next->prev = head->prev;
  44                 add->prev->next = head;
  45                 head->prev->next = add->next;
  46                 head->prev = add->prev;
  47         }
  48 }
  49
  50 #define printf_dbg(fmt, args...)        fprintf(stderr, "%s: " fmt, __func__, ## args)
  51
  52 int yyparse(struct ctf_scanner *scanner);
  53 int yylex(union YYSTYPE *yyval, struct ctf_scanner *scanner);
  54 int yylex_init_extra(struct ctf_scanner *scanner, yyscan_t * ptr_yy_globals);
  55 int yylex_destroy(yyscan_t yyscanner) ;
  56 void yyset_in(FILE * in_str, yyscan_t scanner);
  57
  58 int yydebug;
  59
  60 struct gc_string {
  61         struct cds_list_head gc;
  62         size_t alloclen;
  63         char s[];
  64 };
  65
  66 static const char *node_type_to_str[] = {
  67         [ NODE_UNKNOWN ] = "NODE_UNKNOWN",
  68         [ NODE_ROOT ] = "NODE_ROOT",
  69         [ NODE_EVENT ] = "NODE_EVENT",
  70         [ NODE_STREAM ] = "NODE_STREAM",
  71         [ NODE_TRACE ] = "NODE_TRACE",
  72         [ NODE_CTF_EXPRESSION ] = "NODE_CTF_EXPRESSION",
  73         [ NODE_UNARY_EXPRESSION ] = "NODE_UNARY_EXPRESSION",
  74         [ NODE_TYPEDEF ] = "NODE_TYPEDEF",
  75         [ NODE_TYPEALIAS_TARGET ] = "NODE_TYPEALIAS_TARGET",
  76         [ NODE_TYPEALIAS_ALIAS ] = "NODE_TYPEALIAS_ALIAS",
  77         [ NODE_TYPEALIAS ] = "NODE_TYPEALIAS",
  78         [ NODE_TYPE_SPECIFIER ] = "NODE_TYPE_SPECIFIER",
  79         [ NODE_TYPE_SPECIFIER_LIST ] = "NODE_TYPE_SPECIFIER_LIST",
  80         [ NODE_POINTER ] = "NODE_POINTER",
  81         [ NODE_TYPE_DECLARATOR ] = "NODE_TYPE_DECLARATOR",
  82         [ NODE_FLOATING_POINT ] = "NODE_FLOATING_POINT",
  83         [ NODE_INTEGER ] = "NODE_INTEGER",
  84         [ NODE_STRING ] = "NODE_STRING",
  85         [ NODE_ENUMERATOR ] = "NODE_ENUMERATOR",
  86         [ NODE_ENUM ] = "NODE_ENUM",
  87         [ NODE_STRUCT_OR_VARIANT_DECLARATION ] = "NODE_STRUCT_OR_VARIANT_DECLARATION",
  88         [ NODE_VARIANT ] = "NODE_VARIANT",
  89         [ NODE_STRUCT ] = "NODE_STRUCT",
  90 };
  91
  92 const char *node_type(struct ctf_node *node)
  93 {
  94         if (node->type < NR_NODE_TYPES)
  95                 return node_type_to_str[node->type];
  96         else
  97                 return NULL;
  98 }
  99
 100 static struct gc_string *gc_string_alloc(struct ctf_scanner *scanner,
 101                                          size_t len)
 102 {
 103         struct gc_string *gstr;
 104         size_t alloclen;
 105
 106         /* TODO: could be faster with find first bit or glib Gstring */
 107         /* sizeof long to account for malloc header (int or long ?) */
 108         for (alloclen = 8; alloclen < sizeof(long) + sizeof(*gstr) + len;
 109              alloclen *= 2);
 110
 111         gstr = malloc(alloclen);
 112         cds_list_add(&gstr->gc, &scanner->allocated_strings);
 113         gstr->alloclen = alloclen;
 114         return gstr;
 115 }
 116
 117 /*
 118  * note: never use gc_string_append on a string that has external references.
 119  * gsrc will be garbage collected immediately, and gstr might be.
 120  * Should only be used to append characters to a string literal or constant.
 121  */
 122 struct gc_string *gc_string_append(struct ctf_scanner *scanner,
 123                                    struct gc_string *gstr,
 124                                    struct gc_string *gsrc)
 125 {
 126         size_t newlen = strlen(gsrc->s) + strlen(gstr->s) + 1;
 127         size_t alloclen;
 128
 129         /* TODO: could be faster with find first bit or glib Gstring */
 130         /* sizeof long to account for malloc header (int or long ?) */
 131         for (alloclen = 8; alloclen < sizeof(long) + sizeof(*gstr) + newlen;
 132              alloclen *= 2);
 133
 134         if (alloclen > gstr->alloclen) {
 135                 struct gc_string *newgstr;
 136
 137                 newgstr = gc_string_alloc(scanner, newlen);
 138                 strcpy(newgstr->s, gstr->s);
 139                 strcat(newgstr->s, gsrc->s);
 140                 cds_list_del(&gstr->gc);
 141                 free(gstr);
 142                 gstr = newgstr;
 143         } else {
 144                 strcat(gstr->s, gsrc->s);
 145         }
 146         cds_list_del(&gsrc->gc);
 147         free(gsrc);
 148         return gstr;
 149 }
 150
 151 void setstring(struct ctf_scanner *scanner, YYSTYPE *lvalp, const char *src)
 152 {
 153         lvalp->gs = gc_string_alloc(scanner, strlen(src) + 1);
 154         strcpy(lvalp->gs->s, src);
 155 }
 156
 157 static void init_scope(struct ctf_scanner_scope *scope,
 158                        struct ctf_scanner_scope *parent)
 159 {
 160         scope->parent = parent;
 161         scope->types = g_hash_table_new_full(g_str_hash, g_str_equal,
 162                                              NULL, NULL);
 163 }
 164
 165 static void finalize_scope(struct ctf_scanner_scope *scope)
 166 {
 167         g_hash_table_destroy(scope->types);
 168 }
 169
 170 static void push_scope(struct ctf_scanner *scanner)
 171 {
 172         struct ctf_scanner_scope *ns;
 173
 174         printf_dbg("push scope\n");
 175         ns = malloc(sizeof(struct ctf_scanner_scope));
 176         init_scope(ns, scanner->cs);
 177         scanner->cs = ns;
 178 }
 179
 180 static void pop_scope(struct ctf_scanner *scanner)
 181 {
 182         struct ctf_scanner_scope *os;
 183
 184         printf_dbg("pop scope\n");
 185         os = scanner->cs;
 186         scanner->cs = os->parent;
 187         finalize_scope(os);
 188         free(os);
 189 }
 190
 191 static int lookup_type(struct ctf_scanner_scope *s, const char *id)
 192 {
 193         int ret;
 194
 195         ret = (int) (long) g_hash_table_lookup(s->types, id);
 196         printf_dbg("lookup %p %s %d\n", s, id, ret);
 197         return ret;
 198 }
 199
 200 int is_type(struct ctf_scanner *scanner, const char *id)
 201 {
 202         struct ctf_scanner_scope *it;
 203         int ret = 0;
 204
 205         for (it = scanner->cs; it != NULL; it = it->parent) {
 206                 if (lookup_type(it, id)) {
 207                         ret = 1;
 208                         break;
 209                 }
 210         }
 211         printf_dbg("is type %s %d\n", id, ret);
 212         return ret;
 213 }
 214
 215 static void add_type(struct ctf_scanner *scanner, struct gc_string *id)
 216 {
 217         printf_dbg("add type %s\n", id->s);
 218         if (lookup_type(scanner->cs, id->s))
 219                 return;
 220         g_hash_table_insert(scanner->cs->types, id->s, id->s);
 221 }
 222
 223 static struct ctf_node *make_node(struct ctf_scanner *scanner,
 224                                   enum node_type type)
 225 {
 226         struct ctf_ast *ast = ctf_scanner_get_ast(scanner);
 227         struct ctf_node *node;
 228
 229         node = malloc(sizeof(*node));
 230         if (!node)
 231                 return NULL;
 232         memset(node, 0, sizeof(*node));
 233         node->type = type;
 234         CDS_INIT_LIST_HEAD(&node->tmp_head);
 235         cds_list_add(&node->gc, &ast->allocated_nodes);
 236         cds_list_add(&node->siblings, &node->tmp_head);
 237
 238         switch (type) {
 239         case NODE_ROOT:
 240                 fprintf(stderr, "[error] %s: trying to create root node\n", __func__);
 241                 break;
 242
 243         case NODE_EVENT:
 244                 CDS_INIT_LIST_HEAD(&node->u.event.declaration_list);
 245                 break;
 246         case NODE_STREAM:
 247                 CDS_INIT_LIST_HEAD(&node->u.stream.declaration_list);
 248                 break;
 249         case NODE_TRACE:
 250                 CDS_INIT_LIST_HEAD(&node->u.trace.declaration_list);
 251                 break;
 252
 253         case NODE_CTF_EXPRESSION:
 254                 CDS_INIT_LIST_HEAD(&node->u.ctf_expression.left);
 255                 CDS_INIT_LIST_HEAD(&node->u.ctf_expression.right);
 256                 break;
 257         case NODE_UNARY_EXPRESSION:
 258                 break;
 259
 260         case NODE_TYPEDEF:
 261                 CDS_INIT_LIST_HEAD(&node->u._typedef.type_declarators);
 262                 break;
 263         case NODE_TYPEALIAS_TARGET:
 264                 CDS_INIT_LIST_HEAD(&node->u.typealias_target.type_declarators);
 265                 break;
 266         case NODE_TYPEALIAS_ALIAS:
 267                 CDS_INIT_LIST_HEAD(&node->u.typealias_alias.type_declarators);
 268                 break;
 269         case NODE_TYPEALIAS:
 270                 break;
 271
 272         case NODE_TYPE_SPECIFIER:
 273                 break;
 274         case NODE_TYPE_SPECIFIER_LIST:
 275                 CDS_INIT_LIST_HEAD(&node->u.type_specifier_list.head);
 276                 break;
 277         case NODE_POINTER:
 278                 break;
 279         case NODE_TYPE_DECLARATOR:
 280                 CDS_INIT_LIST_HEAD(&node->u.type_declarator.pointers);
 281                 break;
 282
 283         case NODE_FLOATING_POINT:
 284                 CDS_INIT_LIST_HEAD(&node->u.floating_point.expressions);
 285                 break;
 286         case NODE_INTEGER:
 287                 CDS_INIT_LIST_HEAD(&node->u.integer.expressions);
 288                 break;
 289         case NODE_STRING:
 290                 CDS_INIT_LIST_HEAD(&node->u.string.expressions);
 291                 break;
 292         case NODE_ENUMERATOR:
 293                 CDS_INIT_LIST_HEAD(&node->u.enumerator.values);
 294                 break;
 295         case NODE_ENUM:
 296                 CDS_INIT_LIST_HEAD(&node->u._enum.enumerator_list);
 297                 break;
 298         case NODE_STRUCT_OR_VARIANT_DECLARATION:
 299                 CDS_INIT_LIST_HEAD(&node->u.struct_or_variant_declaration.type_declarators);
 300                 break;
 301         case NODE_VARIANT:
 302                 CDS_INIT_LIST_HEAD(&node->u.variant.declaration_list);
 303                 break;
 304         case NODE_STRUCT:
 305                 CDS_INIT_LIST_HEAD(&node->u._struct.declaration_list);
 306                 break;
 307
 308         case NODE_UNKNOWN:
 309         default:
 310                 fprintf(stderr, "[error] %s: unknown node type %d\n", __func__,
 311                         (int) type);
 312                 break;
 313         }
 314
 315         return node;
 316 }
 317
 318 static int reparent_ctf_expression(struct ctf_node *node,
 319                                    struct ctf_node *parent)
 320 {
 321         switch (parent->type) {
 322         case NODE_EVENT:
 323                 _cds_list_splice_tail(&node->tmp_head, &parent->u.event.declaration_list);
 324                 break;
 325         case NODE_STREAM:
 326                 _cds_list_splice_tail(&node->tmp_head, &parent->u.stream.declaration_list);
 327                 break;
 328         case NODE_TRACE:
 329                 _cds_list_splice_tail(&node->tmp_head, &parent->u.trace.declaration_list);
 330                 break;
 331         case NODE_FLOATING_POINT:
 332                 _cds_list_splice_tail(&node->tmp_head, &parent->u.floating_point.expressions);
 333                 break;
 334         case NODE_INTEGER:
 335                 _cds_list_splice_tail(&node->tmp_head, &parent->u.integer.expressions);
 336                 break;
 337         case NODE_STRING:
 338                 _cds_list_splice_tail(&node->tmp_head, &parent->u.string.expressions);
 339                 break;
 340
 341         case NODE_ROOT:
 342         case NODE_CTF_EXPRESSION:
 343         case NODE_TYPEDEF:
 344         case NODE_TYPEALIAS_TARGET:
 345         case NODE_TYPEALIAS_ALIAS:
 346         case NODE_TYPEALIAS:
 347         case NODE_TYPE_SPECIFIER:
 348         case NODE_TYPE_SPECIFIER_LIST:
 349         case NODE_POINTER:
 350         case NODE_TYPE_DECLARATOR:
 351         case NODE_ENUMERATOR:
 352         case NODE_ENUM:
 353         case NODE_STRUCT_OR_VARIANT_DECLARATION:
 354         case NODE_VARIANT:
 355         case NODE_STRUCT:
 356         case NODE_UNARY_EXPRESSION:
 357                 return -EPERM;
 358
 359         case NODE_UNKNOWN:
 360         default:
 361                 fprintf(stderr, "[error] %s: unknown node type %d\n", __func__,
 362                         (int) parent->type);
 363                 return -EINVAL;
 364         }
 365         return 0;
 366 }
 367
 368 static int reparent_typedef(struct ctf_node *node, struct ctf_node *parent)
 369 {
 370         switch (parent->type) {
 371         case NODE_ROOT:
 372                 _cds_list_splice_tail(&node->tmp_head, &parent->u.root.declaration_list);
 373                 break;
 374         case NODE_EVENT:
 375                 _cds_list_splice_tail(&node->tmp_head, &parent->u.event.declaration_list);
 376                 break;
 377         case NODE_STREAM:
 378                 _cds_list_splice_tail(&node->tmp_head, &parent->u.stream.declaration_list);
 379                 break;
 380         case NODE_TRACE:
 381                 _cds_list_splice_tail(&node->tmp_head, &parent->u.trace.declaration_list);
 382                 break;
 383         case NODE_VARIANT:
 384                 _cds_list_splice_tail(&node->tmp_head, &parent->u.variant.declaration_list);
 385                 break;
 386         case NODE_STRUCT:
 387                 _cds_list_splice_tail(&node->tmp_head, &parent->u._struct.declaration_list);
 388                 break;
 389
 390         case NODE_FLOATING_POINT:
 391         case NODE_INTEGER:
 392         case NODE_STRING:
 393         case NODE_CTF_EXPRESSION:
 394         case NODE_TYPEDEF:
 395         case NODE_TYPEALIAS_TARGET:
 396         case NODE_TYPEALIAS_ALIAS:
 397         case NODE_TYPEALIAS:
 398         case NODE_TYPE_SPECIFIER:
 399         case NODE_TYPE_SPECIFIER_LIST:
 400         case NODE_POINTER:
 401         case NODE_TYPE_DECLARATOR:
 402         case NODE_ENUMERATOR:
 403         case NODE_ENUM:
 404         case NODE_STRUCT_OR_VARIANT_DECLARATION:
 405         case NODE_UNARY_EXPRESSION:
 406                 return -EPERM;
 407
 408         case NODE_UNKNOWN:
 409         default:
 410                 fprintf(stderr, "[error] %s: unknown node type %d\n", __func__,
 411                         (int) parent->type);
 412                 return -EINVAL;
 413         }
 414         return 0;
 415 }
 416
 417 static int reparent_typealias(struct ctf_node *node, struct ctf_node *parent)
 418 {
 419         switch (parent->type) {
 420         case NODE_ROOT:
 421                 _cds_list_splice_tail(&node->tmp_head, &parent->u.root.declaration_list);
 422                 break;
 423         case NODE_EVENT:
 424                 _cds_list_splice_tail(&node->tmp_head, &parent->u.event.declaration_list);
 425                 break;
 426         case NODE_STREAM:
 427                 _cds_list_splice_tail(&node->tmp_head, &parent->u.stream.declaration_list);
 428                 break;
 429         case NODE_TRACE:
 430                 _cds_list_splice_tail(&node->tmp_head, &parent->u.trace.declaration_list);
 431                 break;
 432         case NODE_VARIANT:
 433                 _cds_list_splice_tail(&node->tmp_head, &parent->u.variant.declaration_list);
 434                 break;
 435         case NODE_STRUCT:
 436                 _cds_list_splice_tail(&node->tmp_head, &parent->u._struct.declaration_list);
 437                 break;
 438
 439         case NODE_FLOATING_POINT:
 440         case NODE_INTEGER:
 441         case NODE_STRING:
 442         case NODE_CTF_EXPRESSION:
 443         case NODE_TYPEDEF:
 444         case NODE_TYPEALIAS_TARGET:
 445         case NODE_TYPEALIAS_ALIAS:
 446         case NODE_TYPEALIAS:
 447         case NODE_TYPE_SPECIFIER:
 448         case NODE_TYPE_SPECIFIER_LIST:
 449         case NODE_POINTER:
 450         case NODE_TYPE_DECLARATOR:
 451         case NODE_ENUMERATOR:
 452         case NODE_ENUM:
 453         case NODE_STRUCT_OR_VARIANT_DECLARATION:
 454         case NODE_UNARY_EXPRESSION:
 455                 return -EPERM;
 456
 457         case NODE_UNKNOWN:
 458         default:
 459                 fprintf(stderr, "[error] %s: unknown node type %d\n", __func__,
 460                         (int) parent->type);
 461                 return -EINVAL;
 462         }
 463         return 0;
 464 }
 465
 466 static int reparent_type_specifier(struct ctf_node *node,
 467                                    struct ctf_node *parent)
 468 {
 469         switch (parent->type) {
 470         case NODE_TYPE_SPECIFIER_LIST:
 471                 _cds_list_splice_tail(&node->tmp_head, &parent->u.type_specifier_list.head);
 472                 break;
 473
 474         case NODE_TYPE_SPECIFIER:
 475         case NODE_EVENT:
 476         case NODE_STREAM:
 477         case NODE_TRACE:
 478         case NODE_VARIANT:
 479         case NODE_STRUCT:
 480         case NODE_TYPEDEF:
 481         case NODE_TYPEALIAS_TARGET:
 482         case NODE_TYPEALIAS_ALIAS:
 483         case NODE_TYPE_DECLARATOR:
 484         case NODE_ENUM:
 485         case NODE_STRUCT_OR_VARIANT_DECLARATION:
 486         case NODE_TYPEALIAS:
 487         case NODE_FLOATING_POINT:
 488         case NODE_INTEGER:
 489         case NODE_STRING:
 490         case NODE_CTF_EXPRESSION:
 491         case NODE_POINTER:
 492         case NODE_ENUMERATOR:
 493         case NODE_UNARY_EXPRESSION:
 494                 return -EPERM;
 495
 496         case NODE_UNKNOWN:
 497         default:
 498                 fprintf(stderr, "[error] %s: unknown node type %d\n", __func__,
 499                         (int) parent->type);
 500                 return -EINVAL;
 501         }
 502         return 0;
 503 }
 504
 505 static int reparent_type_specifier_list(struct ctf_node *node,
 506                                         struct ctf_node *parent)
 507 {
 508         switch (parent->type) {
 509         case NODE_ROOT:
 510                 cds_list_add_tail(&node->siblings, &parent->u.root.declaration_list);
 511                 break;
 512         case NODE_EVENT:
 513                 cds_list_add_tail(&node->siblings, &parent->u.event.declaration_list);
 514                 break;
 515         case NODE_STREAM:
 516                 cds_list_add_tail(&node->siblings, &parent->u.stream.declaration_list);
 517                 break;
 518         case NODE_TRACE:
 519                 cds_list_add_tail(&node->siblings, &parent->u.trace.declaration_list);
 520                 break;
 521         case NODE_VARIANT:
 522                 cds_list_add_tail(&node->siblings, &parent->u.variant.declaration_list);
 523                 break;
 524         case NODE_STRUCT:
 525                 cds_list_add_tail(&node->siblings, &parent->u._struct.declaration_list);
 526                 break;
 527         case NODE_TYPEDEF:
 528                 parent->u._typedef.type_specifier_list = node;
 529                 break;
 530         case NODE_TYPEALIAS_TARGET:
 531                 parent->u.typealias_target.type_specifier_list = node;
 532                 break;
 533         case NODE_TYPEALIAS_ALIAS:
 534                 parent->u.typealias_alias.type_specifier_list = node;
 535                 break;
 536         case NODE_TYPE_DECLARATOR:
 537                 parent->u.type_declarator.type = TYPEDEC_NESTED;
 538                 parent->u.type_declarator.u.nested.length = node;
 539                 break;
 540         case NODE_ENUM:
 541                 parent->u._enum.container_type = node;
 542                 break;
 543         case NODE_STRUCT_OR_VARIANT_DECLARATION:
 544                 parent->u.struct_or_variant_declaration.type_specifier_list = node;
 545                 break;
 546         case NODE_TYPE_SPECIFIER:
 547         case NODE_TYPEALIAS:
 548         case NODE_FLOATING_POINT:
 549         case NODE_INTEGER:
 550         case NODE_STRING:
 551         case NODE_CTF_EXPRESSION:
 552         case NODE_POINTER:
 553         case NODE_ENUMERATOR:
 554         case NODE_UNARY_EXPRESSION:
 555                 return -EPERM;
 556
 557         case NODE_UNKNOWN:
 558         default:
 559                 fprintf(stderr, "[error] %s: unknown node type %d\n", __func__,
 560                         (int) parent->type);
 561                 return -EINVAL;
 562         }
 563         return 0;
 564 }
 565
 566 static int reparent_type_declarator(struct ctf_node *node,
 567                                     struct ctf_node *parent)
 568 {
 569         switch (parent->type) {
 570         case NODE_TYPE_DECLARATOR:
 571                 parent->u.type_declarator.type = TYPEDEC_NESTED;
 572                 parent->u.type_declarator.u.nested.type_declarator = node;
 573                 break;
 574         case NODE_STRUCT_OR_VARIANT_DECLARATION:
 575                 _cds_list_splice_tail(&node->tmp_head, &parent->u.struct_or_variant_declaration.type_declarators);
 576                 break;
 577         case NODE_TYPEDEF:
 578                 _cds_list_splice_tail(&node->tmp_head, &parent->u._typedef.type_declarators);
 579                 break;
 580         case NODE_TYPEALIAS_TARGET:
 581                 _cds_list_splice_tail(&node->tmp_head, &parent->u.typealias_target.type_declarators);
 582                 break;
 583         case NODE_TYPEALIAS_ALIAS:
 584                 _cds_list_splice_tail(&node->tmp_head, &parent->u.typealias_alias.type_declarators);
 585                 break;
 586
 587         case NODE_ROOT:
 588         case NODE_EVENT:
 589         case NODE_STREAM:
 590         case NODE_TRACE:
 591         case NODE_VARIANT:
 592         case NODE_STRUCT:
 593         case NODE_TYPEALIAS:
 594         case NODE_ENUM:
 595         case NODE_FLOATING_POINT:
 596         case NODE_INTEGER:
 597         case NODE_STRING:
 598         case NODE_CTF_EXPRESSION:
 599         case NODE_TYPE_SPECIFIER:
 600         case NODE_TYPE_SPECIFIER_LIST:
 601         case NODE_POINTER:
 602         case NODE_ENUMERATOR:
 603         case NODE_UNARY_EXPRESSION:
 604                 return -EPERM;
 605
 606         case NODE_UNKNOWN:
 607         default:
 608                 fprintf(stderr, "[error] %s: unknown node type %d\n", __func__,
 609                         (int) parent->type);
 610                 return -EINVAL;
 611         }
 612         return 0;
 613 }
 614
 615 /*
 616  * set_parent_node
 617  *
 618  * Link node to parent. Returns 0 on success, -EPERM if it is not permitted to
 619  * create the link declared by the input, -ENOENT if node or parent is NULL,
 620  * -EINVAL if there is an internal structure problem.
 621  */
 622 static int set_parent_node(struct ctf_node *node,
 623                          struct ctf_node *parent)
 624 {
 625         if (!node || !parent)
 626                 return -ENOENT;
 627
 628         /* Note: Linking to parent will be done only by an external visitor */
 629
 630         switch (node->type) {
 631         case NODE_ROOT:
 632                 fprintf(stderr, "[error] %s: trying to reparent root node\n", __func__);
 633                 return -EINVAL;
 634
 635         case NODE_EVENT:
 636                 if (parent->type == NODE_ROOT) {
 637                         _cds_list_splice_tail(&node->tmp_head, &parent->u.root.event);
 638                 } else {
 639                         return -EPERM;
 640                 }
 641                 break;
 642         case NODE_STREAM:
 643                 if (parent->type == NODE_ROOT) {
 644                         _cds_list_splice_tail(&node->tmp_head, &parent->u.root.stream);
 645                 } else {
 646                         return -EPERM;
 647                 }
 648                 break;
 649         case NODE_TRACE:
 650                 if (parent->type == NODE_ROOT) {
 651                         _cds_list_splice_tail(&node->tmp_head, &parent->u.root.trace);
 652                 } else {
 653                         return -EPERM;
 654                 }
 655                 break;
 656
 657         case NODE_CTF_EXPRESSION:
 658                 return reparent_ctf_expression(node, parent);
 659         case NODE_UNARY_EXPRESSION:
 660                 if (parent->type == NODE_TYPE_DECLARATOR)
 661                         parent->u.type_declarator.bitfield_len = node;
 662                 else
 663                         return -EPERM;
 664                 break;
 665
 666         case NODE_TYPEDEF:
 667                 return reparent_typedef(node, parent);
 668         case NODE_TYPEALIAS_TARGET:
 669                 if (parent->type == NODE_TYPEALIAS)
 670                         parent->u.typealias.target = node;
 671                 else
 672                         return -EINVAL;
 673         case NODE_TYPEALIAS_ALIAS:
 674                 if (parent->type == NODE_TYPEALIAS)
 675                         parent->u.typealias.alias = node;
 676                 else
 677                         return -EINVAL;
 678         case NODE_TYPEALIAS:
 679                 return reparent_typealias(node, parent);
 680
 681         case NODE_POINTER:
 682                 if (parent->type == NODE_TYPE_DECLARATOR) {
 683                         _cds_list_splice_tail(&node->tmp_head, &parent->u.type_declarator.pointers);
 684                 } else
 685                         return -EPERM;
 686                 break;
 687         case NODE_TYPE_DECLARATOR:
 688                 return reparent_type_declarator(node, parent);
 689
 690         case NODE_TYPE_SPECIFIER_LIST:
 691                 return reparent_type_specifier_list(node, parent);
 692
 693         case NODE_TYPE_SPECIFIER:
 694                 return reparent_type_specifier(node, parent);
 695
 696         case NODE_FLOATING_POINT:
 697         case NODE_INTEGER:
 698         case NODE_STRING:
 699         case NODE_ENUM:
 700         case NODE_VARIANT:
 701         case NODE_STRUCT:
 702                 return -EINVAL; /* Dealt with internally within grammar */
 703
 704         case NODE_ENUMERATOR:
 705                 if (parent->type == NODE_ENUM) {
 706                         _cds_list_splice_tail(&node->tmp_head, &parent->u._enum.enumerator_list);
 707                 } else {
 708                         return -EPERM;
 709                 }
 710                 break;
 711         case NODE_STRUCT_OR_VARIANT_DECLARATION:
 712                 switch (parent->type) {
 713                 case NODE_STRUCT:
 714                         _cds_list_splice_tail(&node->tmp_head, &parent->u._struct.declaration_list);
 715                         break;
 716                 case NODE_VARIANT:
 717                         _cds_list_splice_tail(&node->tmp_head, &parent->u.variant.declaration_list);
 718                         break;
 719                 default:
 720                         return -EINVAL;
 721                 }
 722                 break;
 723
 724         case NODE_UNKNOWN:
 725         default:
 726                 fprintf(stderr, "[error] %s: unknown node type %d\n", __func__,
 727                         (int) parent->type);
 728                 return -EINVAL;
 729         }
 730         return 0;
 731 }
 732
 733 void yyerror(struct ctf_scanner *scanner, const char *str)
 734 {
 735         fprintf(stderr, "error %s\n", str);
 736 }
 737
 738 int yywrap(void)
 739 {
 740         return 1;
 741 }
 742
 743 #define reparent_error(scanner, str)                            \
 744 do {                                                            \
 745         yyerror(scanner, YY_("reparent_error: " str "\n"));     \
 746         YYERROR;                                                \
 747 } while (0)
 748
 749 static void free_strings(struct cds_list_head *list)
 750 {
 751         struct gc_string *gstr, *tmp;
 752
 753         cds_list_for_each_entry_safe(gstr, tmp, list, gc)
 754                 free(gstr);
 755 }
 756
 757 static struct ctf_ast *ctf_ast_alloc(void)
 758 {
 759         struct ctf_ast *ast;
 760
 761         ast = malloc(sizeof(*ast));
 762         if (!ast)
 763                 return NULL;
 764         memset(ast, 0, sizeof(*ast));
 765         CDS_INIT_LIST_HEAD(&ast->allocated_nodes);
 766         ast->root.type = NODE_ROOT;
 767         CDS_INIT_LIST_HEAD(&ast->root.tmp_head);
 768         CDS_INIT_LIST_HEAD(&ast->root.u.root.declaration_list);
 769         CDS_INIT_LIST_HEAD(&ast->root.u.root.trace);
 770         CDS_INIT_LIST_HEAD(&ast->root.u.root.stream);
 771         CDS_INIT_LIST_HEAD(&ast->root.u.root.event);
 772         return ast;
 773 }
 774
 775 static void ctf_ast_free(struct ctf_ast *ast)
 776 {
 777         struct ctf_node *node, *tmp;
 778
 779         cds_list_for_each_entry_safe(node, tmp, &ast->allocated_nodes, gc)
 780                 free(node);
 781 }
 782
 783 int ctf_scanner_append_ast(struct ctf_scanner *scanner)
 784 {
 785         return yyparse(scanner);
 786 }
 787
 788 struct ctf_scanner *ctf_scanner_alloc(FILE *input)
 789 {
 790         struct ctf_scanner *scanner;
 791         int ret;
 792
 793         scanner = malloc(sizeof(*scanner));
 794         if (!scanner)
 795                 return NULL;
 796         memset(scanner, 0, sizeof(*scanner));
 797
 798         ret = yylex_init_extra(scanner, &scanner->scanner);
 799         if (ret) {
 800                 fprintf(stderr, "yylex_init error\n");
 801                 goto cleanup_scanner;
 802         }
 803         yyset_in(input, scanner);
 804
 805         scanner->ast = ctf_ast_alloc();
 806         if (!scanner->ast)
 807                 goto cleanup_lexer;
 808         init_scope(&scanner->root_scope, NULL);
 809         scanner->cs = &scanner->root_scope;
 810         CDS_INIT_LIST_HEAD(&scanner->allocated_strings);
 811
 812         return scanner;
 813
 814 cleanup_lexer:
 815         ret = yylex_destroy(scanner->scanner);
 816         if (!ret)
 817                 fprintf(stderr, "yylex_destroy error\n");
 818 cleanup_scanner:
 819         free(scanner);
 820         return NULL;
 821 }
 822
 823 void ctf_scanner_free(struct ctf_scanner *scanner)
 824 {
 825         int ret;
 826
 827         finalize_scope(&scanner->root_scope);
 828         free_strings(&scanner->allocated_strings);
 829         ctf_ast_free(scanner->ast);
 830         ret = yylex_destroy(scanner->scanner);
 831         if (ret)
 832                 fprintf(stderr, "yylex_destroy error\n");
 833         free(scanner);
 834 }
 835
 836 %}
 837
 838 %define api.pure
 839         /* %locations */
 840 %parse-param {struct ctf_scanner *scanner}
 841 %lex-param {struct ctf_scanner *scanner}
 842 %start file
 843 %token CHARACTER_CONSTANT_START SQUOTE STRING_LITERAL_START DQUOTE ESCSEQ CHAR_STRING_TOKEN LSBRAC RSBRAC LPAREN RPAREN LBRAC RBRAC RARROW STAR PLUS MINUS LT GT TYPEASSIGN COLON SEMICOLON DOTDOTDOT DOT EQUAL COMMA CONST CHAR DOUBLE ENUM EVENT FLOATING_POINT FLOAT INTEGER INT LONG SHORT SIGNED STREAM STRING STRUCT TRACE TYPEALIAS TYPEDEF UNSIGNED VARIANT VOID _BOOL _COMPLEX _IMAGINARY DECIMAL_CONSTANT OCTAL_CONSTANT HEXADECIMAL_CONSTANT
 844 %token <gs> IDENTIFIER ID_TYPE
 845 %token ERROR
 846 %union
 847 {
 848         long long ll;
 849         char c;
 850         struct gc_string *gs;
 851         struct ctf_node *n;
 852 }
 853
 854 %type <gs> keywords
 855 %type <gs> s_char s_char_sequence c_char c_char_sequence
 856
 857 %type <n> postfix_expression unary_expression unary_expression_or_range
 858
 859 %type <n> declaration
 860 %type <n> event_declaration
 861 %type <n> stream_declaration
 862 %type <n> trace_declaration
 863 %type <n> declaration_specifiers
 864 %type <n> alias_declaration_specifiers
 865
 866 %type <n> type_declarator_list
 867 %type <n> type_specifier
 868 %type <n> struct_type_specifier
 869 %type <n> variant_type_specifier
 870 %type <n> declaration_specifiers_or_integer_constant
 871 %type <n> enum_type_specifier
 872 %type <n> struct_or_variant_declaration_list
 873 %type <n> struct_or_variant_declaration
 874 %type <n> struct_or_variant_declarator_list
 875 %type <n> struct_or_variant_declarator
 876 %type <n> enumerator_list
 877 %type <n> enumerator
 878 %type <n> abstract_declarator_list
 879 %type <n> abstract_declarator
 880 %type <n> direct_abstract_declarator
 881 %type <n> alias_abstract_declarator_list
 882 %type <n> alias_abstract_declarator
 883 %type <n> direct_alias_abstract_declarator
 884 %type <n> declarator
 885 %type <n> direct_declarator
 886 %type <n> type_declarator
 887 %type <n> direct_type_declarator
 888 %type <n> pointer
 889 %type <n> ctf_assignment_expression_list
 890 %type <n> ctf_assignment_expression
 891
 892 %%
 893
 894 file:
 895                 declaration
 896                 {
 897                         if (set_parent_node($1, &ctf_scanner_get_ast(scanner)->root))
 898                                 reparent_error(scanner, "error reparenting to root");
 899                 }
 900         |       file declaration
 901                 {
 902                         if (set_parent_node($2, &ctf_scanner_get_ast(scanner)->root))
 903                                 reparent_error(scanner, "error reparenting to root");
 904                 }
 905         ;
 906
 907 keywords:
 908                 VOID
 909                 {       $$ = yylval.gs;         }
 910         |       CHAR
 911                 {       $$ = yylval.gs;         }
 912         |       SHORT
 913                 {       $$ = yylval.gs;         }
 914         |       INT
 915                 {       $$ = yylval.gs;         }
 916         |       LONG
 917                 {       $$ = yylval.gs;         }
 918         |       FLOAT
 919                 {       $$ = yylval.gs;         }
 920         |       DOUBLE
 921                 {       $$ = yylval.gs;         }
 922         |       SIGNED
 923                 {       $$ = yylval.gs;         }
 924         |       UNSIGNED
 925                 {       $$ = yylval.gs;         }
 926         |       _BOOL
 927                 {       $$ = yylval.gs;         }
 928         |       _COMPLEX
 929                 {       $$ = yylval.gs;         }
 930         |       _IMAGINARY
 931                 {       $$ = yylval.gs;         }
 932         |       FLOATING_POINT
 933                 {       $$ = yylval.gs;         }
 934         |       INTEGER
 935                 {       $$ = yylval.gs;         }
 936         |       STRING
 937                 {       $$ = yylval.gs;         }
 938         |       ENUM
 939                 {       $$ = yylval.gs;         }
 940         |       VARIANT
 941                 {       $$ = yylval.gs;         }
 942         |       STRUCT
 943                 {       $$ = yylval.gs;         }
 944         |       CONST
 945                 {       $$ = yylval.gs;         }
 946         |       TYPEDEF
 947                 {       $$ = yylval.gs;         }
 948         |       EVENT
 949                 {       $$ = yylval.gs;         }
 950         |       STREAM
 951                 {       $$ = yylval.gs;         }
 952         |       TRACE
 953                 {       $$ = yylval.gs;         }
 954         ;
 955
 956 /* 1.5 Constants */
 957
 958 c_char_sequence:
 959                 c_char
 960                 {       $$ = $1;                                        }
 961         |       c_char_sequence c_char
 962                 {       $$ = gc_string_append(scanner, $1, $2);         }
 963         ;
 964
 965 c_char:
 966                 CHAR_STRING_TOKEN
 967                 {       $$ = yylval.gs;                                 }
 968         |       ESCSEQ
 969                 {
 970                         reparent_error(scanner, "escape sequences not supported yet");
 971                 }
 972         ;
 973
 974 /* 1.6 String literals */
 975
 976 s_char_sequence:
 977                 s_char
 978                 {       $$ = $1;                                        }
 979         |       s_char_sequence s_char
 980                 {       $$ = gc_string_append(scanner, $1, $2);         }
 981         ;
 982
 983 s_char:
 984                 CHAR_STRING_TOKEN
 985                 {       $$ = yylval.gs;                                 }
 986         |       ESCSEQ
 987                 {
 988                         reparent_error(scanner, "escape sequences not supported yet");
 989                 }
 990         ;
 991
 992 /* 2: Phrase structure grammar */
 993
 994 postfix_expression:
 995                 IDENTIFIER
 996                 {
 997                         $$ = make_node(scanner, NODE_UNARY_EXPRESSION);
 998                         $$->u.unary_expression.type = UNARY_STRING;
 999                         $$->u.unary_expression.u.string = yylval.gs->s;
1000                 }
1001         |       ID_TYPE
1002                 {
1003                         $$ = make_node(scanner, NODE_UNARY_EXPRESSION);
1004                         $$->u.unary_expression.type = UNARY_STRING;
1005                         $$->u.unary_expression.u.string = yylval.gs->s;
1006                 }
1007         |       keywords
1008                 {
1009                         $$ = make_node(scanner, NODE_UNARY_EXPRESSION);
1010                         $$->u.unary_expression.type = UNARY_STRING;
1011                         $$->u.unary_expression.u.string = yylval.gs->s;
1012                 }
1013         |       DECIMAL_CONSTANT
1014                 {
1015                         $$ = make_node(scanner, NODE_UNARY_EXPRESSION);
1016                         $$->u.unary_expression.type = UNARY_UNSIGNED_CONSTANT;
1017                         sscanf(yylval.gs->s, "%" PRIu64,
1018                                &$$->u.unary_expression.u.unsigned_constant);
1019                 }
1020         |       OCTAL_CONSTANT
1021                 {
1022                         $$ = make_node(scanner, NODE_UNARY_EXPRESSION);
1023                         $$->u.unary_expression.type = UNARY_UNSIGNED_CONSTANT;
1024                         sscanf(yylval.gs->s, "0%" PRIo64,
1025                                &$$->u.unary_expression.u.unsigned_constant);
1026                 }
1027         |       HEXADECIMAL_CONSTANT
1028                 {
1029                         $$ = make_node(scanner, NODE_UNARY_EXPRESSION);
1030                         $$->u.unary_expression.type = UNARY_UNSIGNED_CONSTANT;
1031                         sscanf(yylval.gs->s, "0x%" PRIx64,
1032                                &$$->u.unary_expression.u.unsigned_constant);
1033                 }
1034         |       STRING_LITERAL_START DQUOTE
1035                 {
1036                         $$ = make_node(scanner, NODE_UNARY_EXPRESSION);
1037                         $$->u.unary_expression.type = UNARY_STRING;
1038                         $$->u.unary_expression.u.string = "";
1039                 }
1040         |       STRING_LITERAL_START s_char_sequence DQUOTE
1041                 {
1042                         $$ = make_node(scanner, NODE_UNARY_EXPRESSION);
1043                         $$->u.unary_expression.type = UNARY_STRING;
1044                         $$->u.unary_expression.u.string = $2->s;
1045                 }
1046         |       CHARACTER_CONSTANT_START c_char_sequence SQUOTE
1047                 {
1048                         $$ = make_node(scanner, NODE_UNARY_EXPRESSION);
1049                         $$->u.unary_expression.type = UNARY_STRING;
1050                         $$->u.unary_expression.u.string = $2->s;
1051                 }
1052         |       LPAREN unary_expression RPAREN
1053                 {
1054                         $$ = make_node(scanner, NODE_UNARY_EXPRESSION);
1055                         $$->u.unary_expression.type = UNARY_NESTED;
1056                         $$->u.unary_expression.u.nested_exp = $2;
1057                 }
1058         |       postfix_expression LSBRAC unary_expression RSBRAC
1059                 {
1060                         $$ = make_node(scanner, NODE_UNARY_EXPRESSION);
1061                         $$->u.unary_expression.type = UNARY_SBRAC;
1062                         $$->u.unary_expression.u.sbrac_exp = $3;
1063                         cds_list_splice(&($1)->tmp_head, &($$)->tmp_head);
1064                         cds_list_add_tail(&($$)->siblings, &($$)->tmp_head);
1065                 }
1066         |       postfix_expression DOT IDENTIFIER
1067                 {
1068                         $$ = make_node(scanner, NODE_UNARY_EXPRESSION);
1069                         $$->u.unary_expression.type = UNARY_STRING;
1070                         $$->u.unary_expression.u.string = yylval.gs->s;
1071                         $$->u.unary_expression.link = UNARY_DOTLINK;
1072                         cds_list_splice(&($1)->tmp_head, &($$)->tmp_head);
1073                         cds_list_add_tail(&($$)->siblings, &($$)->tmp_head);
1074                 }
1075         |       postfix_expression DOT ID_TYPE
1076                 {
1077                         $$ = make_node(scanner, NODE_UNARY_EXPRESSION);
1078                         $$->u.unary_expression.type = UNARY_STRING;
1079                         $$->u.unary_expression.u.string = yylval.gs->s;
1080                         $$->u.unary_expression.link = UNARY_DOTLINK;
1081                         cds_list_splice(&($1)->tmp_head, &($$)->tmp_head);
1082                         cds_list_add_tail(&($$)->siblings, &($$)->tmp_head);
1083                 }
1084         |       postfix_expression RARROW IDENTIFIER
1085                 {
1086                         $$ = make_node(scanner, NODE_UNARY_EXPRESSION);
1087                         $$->u.unary_expression.type = UNARY_STRING;
1088                         $$->u.unary_expression.u.string = yylval.gs->s;
1089                         $$->u.unary_expression.link = UNARY_ARROWLINK;
1090                         cds_list_splice(&($1)->tmp_head, &($$)->tmp_head);
1091                         cds_list_add_tail(&($$)->siblings, &($$)->tmp_head);
1092                 }
1093         |       postfix_expression RARROW ID_TYPE
1094                 {
1095                         $$ = make_node(scanner, NODE_UNARY_EXPRESSION);
1096                         $$->u.unary_expression.type = UNARY_STRING;
1097                         $$->u.unary_expression.u.string = yylval.gs->s;
1098                         $$->u.unary_expression.link = UNARY_ARROWLINK;
1099                         cds_list_splice(&($1)->tmp_head, &($$)->tmp_head);
1100                         cds_list_add_tail(&($$)->siblings, &($$)->tmp_head);
1101                 }
1102         ;
1103
1104 unary_expression:
1105                 postfix_expression
1106                 {       $$ = $1;                                }
1107         |       PLUS postfix_expression
1108                 {       $$ = $2;                                }
1109         |       MINUS postfix_expression
1110                 {
1111                         $$ = $2;
1112                         if ($$->u.unary_expression.type != UNARY_SIGNED_CONSTANT
1113                                 && $$->u.unary_expression.type != UNARY_UNSIGNED_CONSTANT)
1114                                 reparent_error(scanner, "expecting numeric constant");
1115
1116                         if ($$->u.unary_expression.type == UNARY_UNSIGNED_CONSTANT) {
1117                                 $$->u.unary_expression.type = UNARY_SIGNED_CONSTANT;
1118                                 $$->u.unary_expression.u.signed_constant =
1119                                         -($$->u.unary_expression.u.unsigned_constant);
1120                         } else {
1121                                 $$->u.unary_expression.u.signed_constant =
1122                                         -($$->u.unary_expression.u.signed_constant);
1123                         }
1124                 }
1125         ;
1126
1127 unary_expression_or_range:
1128                 unary_expression DOTDOTDOT unary_expression
1129                 {
1130                         $$ = $1;
1131                         _cds_list_splice_tail(&($3)->tmp_head, &($$)->tmp_head);
1132                         $3->u.unary_expression.link = UNARY_DOTDOTDOT;
1133                 }
1134         |       unary_expression
1135                 {       $$ = $1;                }
1136         ;
1137
1138 /* 2.2: Declarations */
1139
1140 declaration:
1141                 declaration_specifiers SEMICOLON
1142                 {       $$ = $1;        }
1143         |       event_declaration
1144                 {       $$ = $1;        }
1145         |       stream_declaration
1146                 {       $$ = $1;        }
1147         |       trace_declaration
1148                 {       $$ = $1;        }
1149         |       declaration_specifiers TYPEDEF declaration_specifiers type_declarator_list SEMICOLON
1150                 {
1151                         struct ctf_node *list;
1152
1153                         $$ = make_node(scanner, NODE_TYPEDEF);
1154                         list = make_node(scanner, NODE_TYPE_SPECIFIER_LIST);
1155                         $$->u._typedef.type_specifier_list = list;
1156                         _cds_list_splice_tail(&($1)->u.type_specifier_list.head, &list->u.type_specifier_list.head);
1157                         _cds_list_splice_tail(&($3)->u.type_specifier_list.head, &list->u.type_specifier_list.head);
1158                         _cds_list_splice_tail(&($4)->tmp_head, &($$)->u._typedef.type_declarators);
1159                 }
1160         |       TYPEDEF declaration_specifiers type_declarator_list SEMICOLON
1161                 {
1162                         struct ctf_node *list;
1163
1164                         $$ = make_node(scanner, NODE_TYPEDEF);
1165                         list = make_node(scanner, NODE_TYPE_SPECIFIER_LIST);
1166                         $$->u._typedef.type_specifier_list = list;
1167                         _cds_list_splice_tail(&($2)->u.type_specifier_list.head, &list->u.type_specifier_list.head);
1168                         _cds_list_splice_tail(&($3)->tmp_head, &($$)->u._typedef.type_declarators);
1169                 }
1170         |       declaration_specifiers TYPEDEF type_declarator_list SEMICOLON
1171                 {
1172                         struct ctf_node *list;
1173
1174                         $$ = make_node(scanner, NODE_TYPEDEF);
1175                         list = make_node(scanner, NODE_TYPE_SPECIFIER_LIST);
1176                         $$->u._typedef.type_specifier_list = list;
1177                         _cds_list_splice_tail(&($1)->u.type_specifier_list.head, &list->u.type_specifier_list.head);
1178                         _cds_list_splice_tail(&($3)->tmp_head, &($$)->u._typedef.type_declarators);
1179                 }
1180         |       TYPEALIAS declaration_specifiers abstract_declarator_list TYPEASSIGN alias_declaration_specifiers alias_abstract_declarator_list SEMICOLON
1181                 {
1182                         struct ctf_node *list;
1183
1184                         $$ = make_node(scanner, NODE_TYPEALIAS);
1185                         $$->u.typealias.target = make_node(scanner, NODE_TYPEALIAS_TARGET);
1186                         $$->u.typealias.alias = make_node(scanner, NODE_TYPEALIAS_ALIAS);
1187
1188                         list = make_node(scanner, NODE_TYPE_SPECIFIER_LIST);
1189                         $$->u.typealias.target->u.typealias_target.type_specifier_list = list;
1190                         _cds_list_splice_tail(&($2)->u.type_specifier_list.head, &list->u.type_specifier_list.head);
1191                         _cds_list_splice_tail(&($3)->tmp_head, &($$)->u.typealias.target->u.typealias_target.type_declarators);
1192
1193                         list = make_node(scanner, NODE_TYPE_SPECIFIER_LIST);
1194                         $$->u.typealias.alias->u.typealias_alias.type_specifier_list = list;
1195                         _cds_list_splice_tail(&($5)->u.type_specifier_list.head, &list->u.type_specifier_list.head);
1196                         _cds_list_splice_tail(&($6)->tmp_head, &($$)->u.typealias.alias->u.typealias_alias.type_declarators);
1197                 }
1198         ;
1199
1200 event_declaration:
1201                 event_declaration_begin event_declaration_end
1202                 {
1203                         $$ = make_node(scanner, NODE_EVENT);
1204                 }
1205         |       event_declaration_begin ctf_assignment_expression_list event_declaration_end
1206                 {
1207                         $$ = make_node(scanner, NODE_EVENT);
1208                         if (set_parent_node($2, $$))
1209                                 reparent_error(scanner, "event_declaration");
1210                 }
1211         ;
1212
1213 event_declaration_begin:
1214                 EVENT LBRAC
1215                 {       push_scope(scanner);    }
1216         ;
1217
1218 event_declaration_end:
1219                 RBRAC SEMICOLON
1220                 {       pop_scope(scanner);     }
1221         ;
1222
1223
1224 stream_declaration:
1225                 stream_declaration_begin stream_declaration_end
1226                 {
1227                         $$ = make_node(scanner, NODE_STREAM);
1228                 }
1229         |       stream_declaration_begin ctf_assignment_expression_list stream_declaration_end
1230                 {
1231                         $$ = make_node(scanner, NODE_STREAM);
1232                         if (set_parent_node($2, $$))
1233                                 reparent_error(scanner, "stream_declaration");
1234                 }
1235         ;
1236
1237 stream_declaration_begin:
1238                 STREAM LBRAC
1239                 {       push_scope(scanner);    }
1240         ;
1241
1242 stream_declaration_end:
1243                 RBRAC SEMICOLON
1244                 {       pop_scope(scanner);     }
1245         ;
1246
1247
1248 trace_declaration:
1249                 trace_declaration_begin trace_declaration_end
1250                 {
1251                         $$ = make_node(scanner, NODE_TRACE);
1252                 }
1253         |       trace_declaration_begin ctf_assignment_expression_list trace_declaration_end
1254                 {
1255                         $$ = make_node(scanner, NODE_TRACE);
1256                         if (set_parent_node($2, $$))
1257                                 reparent_error(scanner, "trace_declaration");
1258                 }
1259         ;
1260
1261 trace_declaration_begin:
1262                 TRACE LBRAC
1263                 {       push_scope(scanner);    }
1264         ;
1265
1266 trace_declaration_end:
1267                 RBRAC SEMICOLON
1268                 {       pop_scope(scanner);     }
1269         ;
1270
1271 declaration_specifiers:
1272                 CONST
1273                 {
1274                         struct ctf_node *node;
1275
1276                         $$ = make_node(scanner, NODE_TYPE_SPECIFIER_LIST);
1277                         node = make_node(scanner, NODE_TYPE_SPECIFIER);
1278                         node->u.type_specifier.type = TYPESPEC_CONST;
1279                         cds_list_add_tail(&node->siblings, &($$)->u.type_specifier_list.head);
1280                 }
1281         |       type_specifier
1282                 {
1283                         struct ctf_node *node;
1284
1285                         $$ = make_node(scanner, NODE_TYPE_SPECIFIER_LIST);
1286                         node = $1;
1287                         cds_list_add_tail(&node->siblings, &($$)->u.type_specifier_list.head);
1288                 }
1289         |       declaration_specifiers CONST
1290                 {
1291                         struct ctf_node *node;
1292
1293                         $$ = $1;
1294                         node = make_node(scanner, NODE_TYPE_SPECIFIER);
1295                         node->u.type_specifier.type = TYPESPEC_CONST;
1296                         cds_list_add_tail(&node->siblings, &($$)->u.type_specifier_list.head);
1297                 }
1298         |       declaration_specifiers type_specifier
1299                 {
1300                         $$ = $1;
1301                         cds_list_add_tail(&($2)->siblings, &($$)->u.type_specifier_list.head);
1302                 }
1303         ;
1304
1305 type_declarator_list:
1306                 type_declarator
1307                 {       $$ = $1;        }
1308         |       type_declarator_list COMMA type_declarator
1309                 {
1310                         $$ = $1;
1311                         cds_list_add_tail(&($3)->siblings, &($$)->tmp_head);
1312                 }
1313         ;
1314
1315 type_specifier:
1316                 VOID
1317                 {
1318                         $$ = make_node(scanner, NODE_TYPE_SPECIFIER);
1319                         $$->u.type_specifier.type = TYPESPEC_VOID;
1320                 }
1321         |       CHAR
1322                 {
1323                         $$ = make_node(scanner, NODE_TYPE_SPECIFIER);
1324                         $$->u.type_specifier.type = TYPESPEC_CHAR;
1325                 }
1326         |       SHORT
1327                 {
1328                         $$ = make_node(scanner, NODE_TYPE_SPECIFIER);
1329                         $$->u.type_specifier.type = TYPESPEC_SHORT;
1330                 }
1331         |       INT
1332                 {
1333                         $$ = make_node(scanner, NODE_TYPE_SPECIFIER);
1334                         $$->u.type_specifier.type = TYPESPEC_INT;
1335                 }
1336         |       LONG
1337                 {
1338                         $$ = make_node(scanner, NODE_TYPE_SPECIFIER);
1339                         $$->u.type_specifier.type = TYPESPEC_LONG;
1340                 }
1341         |       FLOAT
1342                 {
1343                         $$ = make_node(scanner, NODE_TYPE_SPECIFIER);
1344                         $$->u.type_specifier.type = TYPESPEC_FLOAT;
1345                 }
1346         |       DOUBLE
1347                 {
1348                         $$ = make_node(scanner, NODE_TYPE_SPECIFIER);
1349                         $$->u.type_specifier.type = TYPESPEC_DOUBLE;
1350                 }
1351         |       SIGNED
1352                 {
1353                         $$ = make_node(scanner, NODE_TYPE_SPECIFIER);
1354                         $$->u.type_specifier.type = TYPESPEC_SIGNED;
1355                 }
1356         |       UNSIGNED
1357                 {
1358                         $$ = make_node(scanner, NODE_TYPE_SPECIFIER);
1359                         $$->u.type_specifier.type = TYPESPEC_UNSIGNED;
1360                 }
1361         |       _BOOL
1362                 {
1363                         $$ = make_node(scanner, NODE_TYPE_SPECIFIER);
1364                         $$->u.type_specifier.type = TYPESPEC_BOOL;
1365                 }
1366         |       _COMPLEX
1367                 {
1368                         $$ = make_node(scanner, NODE_TYPE_SPECIFIER);
1369                         $$->u.type_specifier.type = TYPESPEC_COMPLEX;
1370                 }
1371         |       _IMAGINARY
1372                 {
1373                         $$ = make_node(scanner, NODE_TYPE_SPECIFIER);
1374                         $$->u.type_specifier.type = TYPESPEC_IMAGINARY;
1375                 }
1376         |       ID_TYPE
1377                 {
1378                         $$ = make_node(scanner, NODE_TYPE_SPECIFIER);
1379                         $$->u.type_specifier.type = TYPESPEC_ID_TYPE;
1380                         $$->u.type_specifier.id_type = yylval.gs->s;
1381                 }
1382         |       FLOATING_POINT LBRAC RBRAC
1383                 {
1384                         $$ = make_node(scanner, NODE_TYPE_SPECIFIER);
1385                         $$->u.type_specifier.type = TYPESPEC_FLOATING_POINT;
1386                         $$->u.type_specifier.node = make_node(scanner, NODE_FLOATING_POINT);
1387                 }
1388         |       FLOATING_POINT LBRAC ctf_assignment_expression_list RBRAC
1389                 {
1390                         $$ = make_node(scanner, NODE_TYPE_SPECIFIER);
1391                         $$->u.type_specifier.type = TYPESPEC_FLOATING_POINT;
1392                         $$->u.type_specifier.node = make_node(scanner, NODE_FLOATING_POINT);
1393                         if (set_parent_node($3, $$->u.type_specifier.node))
1394                                 reparent_error(scanner, "floating point reparent error");
1395                 }
1396         |       INTEGER LBRAC RBRAC
1397                 {
1398                         $$ = make_node(scanner, NODE_TYPE_SPECIFIER);
1399                         $$->u.type_specifier.type = TYPESPEC_INTEGER;
1400                         $$->u.type_specifier.node = make_node(scanner, NODE_INTEGER);
1401                 }
1402         |       INTEGER LBRAC ctf_assignment_expression_list RBRAC
1403                 {
1404                         $$ = make_node(scanner, NODE_TYPE_SPECIFIER);
1405                         $$->u.type_specifier.type = TYPESPEC_INTEGER;
1406                         $$->u.type_specifier.node = make_node(scanner, NODE_INTEGER);
1407                         if (set_parent_node($3, $$->u.type_specifier.node))
1408                                 reparent_error(scanner, "integer reparent error");
1409                 }
1410         |       STRING LBRAC RBRAC
1411                 {
1412                         $$ = make_node(scanner, NODE_TYPE_SPECIFIER);
1413                         $$->u.type_specifier.type = TYPESPEC_STRING;
1414                         $$->u.type_specifier.node = make_node(scanner, NODE_STRING);
1415                 }
1416         |       STRING LBRAC ctf_assignment_expression_list RBRAC
1417                 {
1418                         $$ = make_node(scanner, NODE_TYPE_SPECIFIER);
1419                         $$->u.type_specifier.type = TYPESPEC_STRING;
1420                         $$->u.type_specifier.node = make_node(scanner, NODE_STRING);
1421                         if (set_parent_node($3, $$->u.type_specifier.node))
1422                                 reparent_error(scanner, "string reparent error");
1423                 }
1424         |       ENUM enum_type_specifier
1425                 {
1426                         $$ = make_node(scanner, NODE_TYPE_SPECIFIER);
1427                         $$->u.type_specifier.type = TYPESPEC_ENUM;
1428                         $$->u.type_specifier.node = $2;
1429                 }
1430         |       VARIANT variant_type_specifier
1431                 {
1432                         $$ = make_node(scanner, NODE_TYPE_SPECIFIER);
1433                         $$->u.type_specifier.type = TYPESPEC_VARIANT;
1434                         $$->u.type_specifier.node = $2;
1435                 }
1436         |       STRUCT struct_type_specifier
1437                 {
1438                         $$ = make_node(scanner, NODE_TYPE_SPECIFIER);
1439                         $$->u.type_specifier.type = TYPESPEC_STRUCT;
1440                         $$->u.type_specifier.node = $2;
1441                 }
1442         ;
1443
1444 struct_type_specifier:
1445                 struct_declaration_begin struct_or_variant_declaration_list struct_declaration_end
1446                 {
1447                         $$ = make_node(scanner, NODE_STRUCT);
1448                         $$->u._struct.has_body = 1;
1449                         if ($2 && set_parent_node($2, $$))
1450                                 reparent_error(scanner, "struct reparent error");
1451                 }
1452         |       IDENTIFIER struct_declaration_begin struct_or_variant_declaration_list struct_declaration_end
1453                 {
1454                         $$ = make_node(scanner, NODE_STRUCT);
1455                         $$->u._struct.has_body = 1;
1456                         $$->u._struct.name = $1->s;
1457                         if ($3 && set_parent_node($3, $$))
1458                                 reparent_error(scanner, "struct reparent error");
1459                 }
1460         |       ID_TYPE struct_declaration_begin struct_or_variant_declaration_list struct_declaration_end
1461                 {
1462                         $$ = make_node(scanner, NODE_STRUCT);
1463                         $$->u._struct.has_body = 1;
1464                         $$->u._struct.name = $1->s;
1465                         if ($3 && set_parent_node($3, $$))
1466                                 reparent_error(scanner, "struct reparent error");
1467                 }
1468         |       IDENTIFIER
1469                 {
1470                         $$ = make_node(scanner, NODE_STRUCT);
1471                         $$->u._struct.has_body = 0;
1472                         $$->u._struct.name = $1->s;
1473                 }
1474         |       ID_TYPE
1475                 {
1476                         $$ = make_node(scanner, NODE_STRUCT);
1477                         $$->u._struct.has_body = 0;
1478                         $$->u._struct.name = $1->s;
1479                 }
1480         ;
1481
1482 struct_declaration_begin:
1483                 LBRAC
1484                 {       push_scope(scanner);    }
1485         ;
1486
1487 struct_declaration_end:
1488                 RBRAC
1489                 {       pop_scope(scanner);     }
1490         ;
1491
1492 variant_type_specifier:
1493                 variant_declaration_begin struct_or_variant_declaration_list variant_declaration_end
1494                 {
1495                         $$ = make_node(scanner, NODE_VARIANT);
1496                         $$->u.variant.has_body = 1;
1497                         if ($2 && set_parent_node($2, $$))
1498                                 reparent_error(scanner, "variant reparent error");
1499                 }
1500         |       LT IDENTIFIER GT variant_declaration_begin struct_or_variant_declaration_list variant_declaration_end
1501                 {
1502                         $$ = make_node(scanner, NODE_VARIANT);
1503                         $$->u.variant.has_body = 1;
1504                         $$->u.variant.choice = $2->s;
1505                         if ($5 && set_parent_node($5, $$))
1506                                 reparent_error(scanner, "variant reparent error");
1507                 }
1508         |       LT ID_TYPE GT variant_declaration_begin struct_or_variant_declaration_list variant_declaration_end
1509                 {
1510                         $$ = make_node(scanner, NODE_VARIANT);
1511                         $$->u.variant.has_body = 1;
1512                         $$->u.variant.choice = $2->s;
1513                         if ($5 && set_parent_node($5, $$))
1514                                 reparent_error(scanner, "variant reparent error");
1515                 }
1516         |       IDENTIFIER variant_declaration_begin struct_or_variant_declaration_list variant_declaration_end
1517                 {
1518                         $$ = make_node(scanner, NODE_VARIANT);
1519                         $$->u.variant.has_body = 1;
1520                         $$->u.variant.name = $1->s;
1521                         if ($3 && set_parent_node($3, $$))
1522                                 reparent_error(scanner, "variant reparent error");
1523                 }
1524         |       IDENTIFIER LT IDENTIFIER GT variant_declaration_begin struct_or_variant_declaration_list variant_declaration_end
1525                 {
1526                         $$ = make_node(scanner, NODE_VARIANT);
1527                         $$->u.variant.has_body = 1;
1528                         $$->u.variant.name = $1->s;
1529                         $$->u.variant.choice = $3->s;
1530                         if ($6 && set_parent_node($6, $$))
1531                                 reparent_error(scanner, "variant reparent error");
1532                 }
1533         |       IDENTIFIER LT IDENTIFIER GT
1534                 {
1535                         $$ = make_node(scanner, NODE_VARIANT);
1536                         $$->u.variant.has_body = 0;
1537                         $$->u.variant.name = $1->s;
1538                         $$->u.variant.choice = $3->s;
1539                 }
1540         |       IDENTIFIER LT ID_TYPE GT variant_declaration_begin struct_or_variant_declaration_list variant_declaration_end
1541                 {
1542                         $$ = make_node(scanner, NODE_VARIANT);
1543                         $$->u.variant.has_body = 1;
1544                         $$->u.variant.name = $1->s;
1545                         $$->u.variant.choice = $3->s;
1546                         if ($6 && set_parent_node($6, $$))
1547                                 reparent_error(scanner, "variant reparent error");
1548                 }
1549         |       IDENTIFIER LT ID_TYPE GT
1550                 {
1551                         $$ = make_node(scanner, NODE_VARIANT);
1552                         $$->u.variant.has_body = 0;
1553                         $$->u.variant.name = $1->s;
1554                         $$->u.variant.choice = $3->s;
1555                 }
1556         |       ID_TYPE variant_declaration_begin struct_or_variant_declaration_list variant_declaration_end
1557                 {
1558                         $$ = make_node(scanner, NODE_VARIANT);
1559                         $$->u.variant.has_body = 1;
1560                         $$->u.variant.name = $1->s;
1561                         if ($3 && set_parent_node($3, $$))
1562                                 reparent_error(scanner, "variant reparent error");
1563                 }
1564         |       ID_TYPE LT IDENTIFIER GT variant_declaration_begin struct_or_variant_declaration_list variant_declaration_end
1565                 {
1566                         $$ = make_node(scanner, NODE_VARIANT);
1567                         $$->u.variant.has_body = 1;
1568                         $$->u.variant.name = $1->s;
1569                         $$->u.variant.choice = $3->s;
1570                         if ($6 && set_parent_node($6, $$))
1571                                 reparent_error(scanner, "variant reparent error");
1572                 }
1573         |       ID_TYPE LT IDENTIFIER GT
1574                 {
1575                         $$ = make_node(scanner, NODE_VARIANT);
1576                         $$->u.variant.has_body = 0;
1577                         $$->u.variant.name = $1->s;
1578                         $$->u.variant.choice = $3->s;
1579                 }
1580         |       ID_TYPE LT ID_TYPE GT variant_declaration_begin struct_or_variant_declaration_list variant_declaration_end
1581                 {
1582                         $$ = make_node(scanner, NODE_VARIANT);
1583                         $$->u.variant.has_body = 1;
1584                         $$->u.variant.name = $1->s;
1585                         $$->u.variant.choice = $3->s;
1586                         if ($6 && set_parent_node($6, $$))
1587                                 reparent_error(scanner, "variant reparent error");
1588                 }
1589         |       ID_TYPE LT ID_TYPE GT
1590                 {
1591                         $$ = make_node(scanner, NODE_VARIANT);
1592                         $$->u.variant.has_body = 0;
1593                         $$->u.variant.name = $1->s;
1594                         $$->u.variant.choice = $3->s;
1595                 }
1596         ;
1597
1598 variant_declaration_begin:
1599                 LBRAC
1600                 {       push_scope(scanner);    }
1601         ;
1602
1603 variant_declaration_end:
1604                 RBRAC
1605                 {       pop_scope(scanner);     }
1606         ;
1607
1608 declaration_specifiers_or_integer_constant:
1609                 declaration_specifiers
1610                 {       $$ = $1;                }
1611         |       DECIMAL_CONSTANT
1612                 {
1613                         $$ = make_node(scanner, NODE_UNARY_EXPRESSION);
1614                         $$->u.unary_expression.type = UNARY_UNSIGNED_CONSTANT;
1615                         sscanf(yylval.gs->s, "%" PRIu64,
1616                                &$$->u.unary_expression.u.unsigned_constant);
1617                 }
1618         |       OCTAL_CONSTANT
1619                 {
1620                         $$ = make_node(scanner, NODE_UNARY_EXPRESSION);
1621                         $$->u.unary_expression.type = UNARY_UNSIGNED_CONSTANT;
1622                         sscanf(yylval.gs->s, "0%" PRIo64,
1623                                &$$->u.unary_expression.u.unsigned_constant);
1624                 }
1625         |       HEXADECIMAL_CONSTANT
1626                 {
1627                         $$ = make_node(scanner, NODE_UNARY_EXPRESSION);
1628                         $$->u.unary_expression.type = UNARY_UNSIGNED_CONSTANT;
1629                         sscanf(yylval.gs->s, "0x%" PRIx64,
1630                                &$$->u.unary_expression.u.unsigned_constant);
1631                 }
1632         ;
1633
1634 enum_type_specifier:
1635                 LBRAC enumerator_list RBRAC
1636                 {
1637                         $$ = make_node(scanner, NODE_ENUM);
1638                         $$->u._enum.has_body = 1;
1639                         _cds_list_splice_tail(&($2)->tmp_head, &($$)->u._enum.enumerator_list);
1640                 }
1641         |       LT declaration_specifiers GT LBRAC enumerator_list RBRAC
1642                 {
1643                         $$ = make_node(scanner, NODE_ENUM);
1644                         $$->u._enum.has_body = 1;
1645                         ($$)->u._enum.container_type = $2;
1646                         _cds_list_splice_tail(&($5)->tmp_head, &($$)->u._enum.enumerator_list);
1647                 }
1648         |       IDENTIFIER LBRAC enumerator_list RBRAC
1649                 {
1650                         $$ = make_node(scanner, NODE_ENUM);
1651                         $$->u._enum.has_body = 1;
1652                         $$->u._enum.enum_id = $1->s;
1653                         _cds_list_splice_tail(&($3)->tmp_head, &($$)->u._enum.enumerator_list);
1654                 }
1655         |       IDENTIFIER LT declaration_specifiers GT LBRAC enumerator_list RBRAC
1656                 {
1657                         $$ = make_node(scanner, NODE_ENUM);
1658                         $$->u._enum.has_body = 1;
1659                         $$->u._enum.enum_id = $1->s;
1660                         ($$)->u._enum.container_type = $3;
1661                         _cds_list_splice_tail(&($6)->tmp_head, &($$)->u._enum.enumerator_list);
1662                 }
1663         |       ID_TYPE LBRAC enumerator_list RBRAC
1664                 {
1665                         $$ = make_node(scanner, NODE_ENUM);
1666                         $$->u._enum.has_body = 1;
1667                         $$->u._enum.enum_id = $1->s;
1668                         _cds_list_splice_tail(&($3)->tmp_head, &($$)->u._enum.enumerator_list);
1669                 }
1670         |       ID_TYPE LT declaration_specifiers GT LBRAC enumerator_list RBRAC
1671                 {
1672                         $$ = make_node(scanner, NODE_ENUM);
1673                         $$->u._enum.has_body = 1;
1674                         $$->u._enum.enum_id = $1->s;
1675                         ($$)->u._enum.container_type = $3;
1676                         _cds_list_splice_tail(&($6)->tmp_head, &($$)->u._enum.enumerator_list);
1677                 }
1678         |       LBRAC enumerator_list COMMA RBRAC
1679                 {
1680                         $$ = make_node(scanner, NODE_ENUM);
1681                         $$->u._enum.has_body = 1;
1682                         _cds_list_splice_tail(&($2)->tmp_head, &($$)->u._enum.enumerator_list);
1683                 }
1684         |       LT declaration_specifiers GT LBRAC enumerator_list COMMA RBRAC
1685                 {
1686                         $$ = make_node(scanner, NODE_ENUM);
1687                         $$->u._enum.has_body = 1;
1688                         ($$)->u._enum.container_type = $2;
1689                         _cds_list_splice_tail(&($5)->tmp_head, &($$)->u._enum.enumerator_list);
1690                 }
1691         |       IDENTIFIER LBRAC enumerator_list COMMA RBRAC
1692                 {
1693                         $$ = make_node(scanner, NODE_ENUM);
1694                         $$->u._enum.has_body = 1;
1695                         $$->u._enum.enum_id = $1->s;
1696                         _cds_list_splice_tail(&($3)->tmp_head, &($$)->u._enum.enumerator_list);
1697                 }
1698         |       IDENTIFIER LT declaration_specifiers GT LBRAC enumerator_list COMMA RBRAC
1699                 {
1700                         $$ = make_node(scanner, NODE_ENUM);
1701                         $$->u._enum.has_body = 1;
1702                         $$->u._enum.enum_id = $1->s;
1703                         ($$)->u._enum.container_type = $3;
1704                         _cds_list_splice_tail(&($6)->tmp_head, &($$)->u._enum.enumerator_list);
1705                 }
1706         |       IDENTIFIER
1707                 {
1708                         $$ = make_node(scanner, NODE_ENUM);
1709                         $$->u._enum.has_body = 0;
1710                         $$->u._enum.enum_id = $1->s;
1711                 }
1712         |       IDENTIFIER LT declaration_specifiers GT
1713                 {
1714                         $$ = make_node(scanner, NODE_ENUM);
1715                         $$->u._enum.has_body = 0;
1716                         $$->u._enum.enum_id = $1->s;
1717                         ($$)->u._enum.container_type = $3;
1718                 }
1719         |       ID_TYPE LBRAC enumerator_list COMMA RBRAC
1720                 {
1721                         $$ = make_node(scanner, NODE_ENUM);
1722                         $$->u._enum.has_body = 1;
1723                         $$->u._enum.enum_id = $1->s;
1724                         _cds_list_splice_tail(&($3)->tmp_head, &($$)->u._enum.enumerator_list);
1725                 }
1726         |       ID_TYPE LT declaration_specifiers GT LBRAC enumerator_list COMMA RBRAC
1727                 {
1728                         $$ = make_node(scanner, NODE_ENUM);
1729                         $$->u._enum.has_body = 1;
1730                         $$->u._enum.enum_id = $1->s;
1731                         ($$)->u._enum.container_type = $3;
1732                         _cds_list_splice_tail(&($6)->tmp_head, &($$)->u._enum.enumerator_list);
1733                 }
1734         |       ID_TYPE
1735                 {
1736                         $$ = make_node(scanner, NODE_ENUM);
1737                         $$->u._enum.has_body = 0;
1738                         $$->u._enum.enum_id = $1->s;
1739                 }
1740         |       ID_TYPE LT declaration_specifiers GT
1741                 {
1742                         $$ = make_node(scanner, NODE_ENUM);
1743                         $$->u._enum.has_body = 0;
1744                         $$->u._enum.enum_id = $1->s;
1745                         ($$)->u._enum.container_type = $3;
1746                 }
1747         ;
1748
1749 struct_or_variant_declaration_list:
1750                 /* empty */
1751                 {       $$ = NULL;      }
1752         |       struct_or_variant_declaration_list struct_or_variant_declaration
1753                 {
1754                         if ($1) {
1755                                 $$ = $1;
1756                                 cds_list_add_tail(&($2)->siblings, &($$)->tmp_head);
1757                         } else {
1758                                 $$ = $2;
1759                                 cds_list_add_tail(&($$)->siblings, &($$)->tmp_head);
1760                         }
1761                 }
1762         ;
1763
1764 struct_or_variant_declaration:
1765                 declaration_specifiers struct_or_variant_declarator_list SEMICOLON
1766                 {
1767                         struct ctf_node *list;
1768
1769                         list = make_node(scanner, NODE_TYPE_SPECIFIER_LIST);
1770                         _cds_list_splice_tail(&($1)->u.type_specifier_list.head, &list->u.type_specifier_list.head);
1771                         $$ = make_node(scanner, NODE_STRUCT_OR_VARIANT_DECLARATION);
1772                         ($$)->u.struct_or_variant_declaration.type_specifier_list = list;
1773                         _cds_list_splice_tail(&($2)->tmp_head, &($$)->u.struct_or_variant_declaration.type_declarators);
1774                 }
1775         |       declaration_specifiers TYPEDEF declaration_specifiers type_declarator_list SEMICOLON
1776                 {
1777                         struct ctf_node *list;
1778
1779                         $$ = make_node(scanner, NODE_TYPEDEF);
1780                         list = make_node(scanner, NODE_TYPE_SPECIFIER_LIST);
1781                         $$->u._typedef.type_specifier_list = list;
1782                         _cds_list_splice_tail(&($1)->u.type_specifier_list.head, &list->u.type_specifier_list.head);
1783                         _cds_list_splice_tail(&($3)->u.type_specifier_list.head, &list->u.type_specifier_list.head);
1784                         _cds_list_splice_tail(&($4)->tmp_head, &($$)->u._typedef.type_declarators);
1785                 }
1786         |       TYPEDEF declaration_specifiers type_declarator_list SEMICOLON
1787                 {
1788                         struct ctf_node *list;
1789
1790                         $$ = make_node(scanner, NODE_TYPEDEF);
1791                         list = make_node(scanner, NODE_TYPE_SPECIFIER_LIST);
1792                         $$->u._typedef.type_specifier_list = list;
1793                         _cds_list_splice_tail(&($2)->u.type_specifier_list.head, &list->u.type_specifier_list.head);
1794                         _cds_list_splice_tail(&($3)->tmp_head, &($$)->u._typedef.type_declarators);
1795                 }
1796         |       declaration_specifiers TYPEDEF type_declarator_list SEMICOLON
1797                 {
1798                         struct ctf_node *list;
1799
1800                         list = make_node(scanner, NODE_TYPE_SPECIFIER_LIST);
1801                         _cds_list_splice_tail(&($1)->u.type_specifier_list.head, &list->u.type_specifier_list.head);
1802                         $$ = make_node(scanner, NODE_TYPEDEF);
1803                         ($$)->u.struct_or_variant_declaration.type_specifier_list = list;
1804                         _cds_list_splice_tail(&($3)->tmp_head, &($$)->u._typedef.type_declarators);
1805                 }
1806         |       TYPEALIAS declaration_specifiers abstract_declarator_list TYPEASSIGN alias_declaration_specifiers alias_abstract_declarator_list SEMICOLON
1807                 {
1808                         struct ctf_node *list;
1809
1810                         $$ = make_node(scanner, NODE_TYPEALIAS);
1811                         $$->u.typealias.target = make_node(scanner, NODE_TYPEALIAS_TARGET);
1812                         $$->u.typealias.alias = make_node(scanner, NODE_TYPEALIAS_ALIAS);
1813
1814                         list = make_node(scanner, NODE_TYPE_SPECIFIER_LIST);
1815                         $$->u.typealias.target->u.typealias_target.type_specifier_list = list;
1816                         _cds_list_splice_tail(&($2)->u.type_specifier_list.head, &list->u.type_specifier_list.head);
1817                         _cds_list_splice_tail(&($3)->tmp_head, &($$)->u.typealias.target->u.typealias_target.type_declarators);
1818
1819                         list = make_node(scanner, NODE_TYPE_SPECIFIER_LIST);
1820                         $$->u.typealias.alias->u.typealias_alias.type_specifier_list = list;
1821                         _cds_list_splice_tail(&($5)->u.type_specifier_list.head, &list->u.type_specifier_list.head);
1822                         _cds_list_splice_tail(&($6)->tmp_head, &($$)->u.typealias.alias->u.typealias_alias.type_declarators);
1823                 }
1824         ;
1825
1826 alias_declaration_specifiers:
1827                 CONST
1828                 {
1829                         struct ctf_node *node;
1830
1831                         $$ = make_node(scanner, NODE_TYPE_SPECIFIER_LIST);
1832                         node = make_node(scanner, NODE_TYPE_SPECIFIER);
1833                         node->u.type_specifier.type = TYPESPEC_CONST;
1834                         cds_list_add_tail(&node->siblings, &($$)->u.type_specifier_list.head);
1835                 }
1836         |       type_specifier
1837                 {
1838                         struct ctf_node *node;
1839
1840                         $$ = make_node(scanner, NODE_TYPE_SPECIFIER_LIST);
1841                         node = $1;
1842                         cds_list_add_tail(&node->siblings, &($$)->u.type_specifier_list.head);
1843                 }
1844         |       IDENTIFIER
1845                 {
1846                         struct ctf_node *node;
1847
1848                         add_type(scanner, $1);
1849                         $$ = make_node(scanner, NODE_TYPE_SPECIFIER_LIST);
1850                         node = make_node(scanner, NODE_TYPE_SPECIFIER);
1851                         node->u.type_specifier.type = TYPESPEC_ID_TYPE;
1852                         node->u.type_specifier.id_type = yylval.gs->s;
1853                         cds_list_add_tail(&node->siblings, &($$)->u.type_specifier_list.head);
1854                 }
1855         |       alias_declaration_specifiers CONST
1856                 {
1857                         struct ctf_node *node;
1858
1859                         $$ = $1;
1860                         node = make_node(scanner, NODE_TYPE_SPECIFIER);
1861                         node->u.type_specifier.type = TYPESPEC_CONST;
1862                         cds_list_add_tail(&node->siblings, &($$)->u.type_specifier_list.head);
1863                 }
1864         |       alias_declaration_specifiers type_specifier
1865                 {
1866                         $$ = $1;
1867                         cds_list_add_tail(&($2)->siblings, &($$)->u.type_specifier_list.head);
1868                 }
1869         |       alias_declaration_specifiers IDENTIFIER
1870                 {
1871                         struct ctf_node *node;
1872
1873                         add_type(scanner, $2);
1874                         $$ = $1;
1875                         node = make_node(scanner, NODE_TYPE_SPECIFIER);
1876                         node->u.type_specifier.type = TYPESPEC_ID_TYPE;
1877                         node->u.type_specifier.id_type = yylval.gs->s;
1878                         cds_list_add_tail(&node->siblings, &($$)->u.type_specifier_list.head);
1879                 }
1880         ;
1881
1882 struct_or_variant_declarator_list:
1883                 struct_or_variant_declarator
1884                 {       $$ = $1;        }
1885         |       struct_or_variant_declarator_list COMMA struct_or_variant_declarator
1886                 {
1887                         $$ = $1;
1888                         cds_list_add_tail(&($3)->siblings, &($$)->tmp_head);
1889                 }
1890         ;
1891
1892 struct_or_variant_declarator:
1893                 declarator
1894                 {       $$ = $1;        }
1895         |       COLON unary_expression
1896                 {       $$ = $2;        }
1897         |       declarator COLON unary_expression
1898                 {
1899                         $$ = $1;
1900                         if (set_parent_node($3, $1))
1901                                 reparent_error(scanner, "struct_or_variant_declarator");
1902                 }
1903         ;
1904
1905 enumerator_list:
1906                 enumerator
1907                 {       $$ = $1;        }
1908         |       enumerator_list COMMA enumerator
1909                 {
1910                         $$ = $1;
1911                         cds_list_add_tail(&($3)->siblings, &($$)->tmp_head);
1912                 }
1913         ;
1914
1915 enumerator:
1916                 IDENTIFIER
1917                 {
1918                         $$ = make_node(scanner, NODE_ENUMERATOR);
1919                         $$->u.enumerator.id = $1->s;
1920                 }
1921         |       ID_TYPE
1922                 {
1923                         $$ = make_node(scanner, NODE_ENUMERATOR);
1924                         $$->u.enumerator.id = $1->s;
1925                 }
1926         |       keywords
1927                 {
1928                         $$ = make_node(scanner, NODE_ENUMERATOR);
1929                         $$->u.enumerator.id = $1->s;
1930                 }
1931         |       STRING_LITERAL_START DQUOTE
1932                 {
1933                         $$ = make_node(scanner, NODE_ENUMERATOR);
1934                         $$->u.enumerator.id = "";
1935                 }
1936         |       STRING_LITERAL_START s_char_sequence DQUOTE
1937                 {
1938                         $$ = make_node(scanner, NODE_ENUMERATOR);
1939                         $$->u.enumerator.id = $2->s;
1940                 }
1941         |       IDENTIFIER EQUAL unary_expression_or_range
1942                 {
1943                         $$ = make_node(scanner, NODE_ENUMERATOR);
1944                         $$->u.enumerator.id = $1->s;
1945                         cds_list_splice(&($3)->tmp_head, &($$)->u.enumerator.values);
1946                 }
1947         |       ID_TYPE EQUAL unary_expression_or_range
1948                 {
1949                         $$ = make_node(scanner, NODE_ENUMERATOR);
1950                         $$->u.enumerator.id = $1->s;
1951                         cds_list_splice(&($3)->tmp_head, &($$)->u.enumerator.values);
1952                 }
1953         |       keywords EQUAL unary_expression_or_range
1954                 {
1955                         $$ = make_node(scanner, NODE_ENUMERATOR);
1956                         $$->u.enumerator.id = $1->s;
1957                         cds_list_splice(&($3)->tmp_head, &($$)->u.enumerator.values);
1958                 }
1959         |       STRING_LITERAL_START DQUOTE EQUAL unary_expression_or_range
1960                 {
1961                         $$ = make_node(scanner, NODE_ENUMERATOR);
1962                         $$->u.enumerator.id = "";
1963                         cds_list_splice(&($4)->tmp_head, &($$)->u.enumerator.values);
1964                 }
1965         |       STRING_LITERAL_START s_char_sequence DQUOTE EQUAL unary_expression_or_range
1966                 {
1967                         $$ = make_node(scanner, NODE_ENUMERATOR);
1968                         $$->u.enumerator.id = $2->s;
1969                         cds_list_splice(&($5)->tmp_head, &($$)->u.enumerator.values);
1970                 }
1971         ;
1972
1973 abstract_declarator_list:
1974                 abstract_declarator
1975                 {       $$ = $1;        }
1976         |       abstract_declarator_list COMMA abstract_declarator
1977                 {
1978                         $$ = $1;
1979                         cds_list_add_tail(&($3)->siblings, &($$)->tmp_head);
1980                 }
1981         ;
1982
1983 abstract_declarator:
1984                 direct_abstract_declarator
1985                 {       $$ = $1;        }
1986         |       pointer direct_abstract_declarator
1987                 {
1988                         $$ = $2;
1989                         cds_list_splice(&($1)->tmp_head, &($$)->u.type_declarator.pointers);
1990                 }
1991         ;
1992
1993 direct_abstract_declarator:
1994                 /* empty */
1995                 {
1996                         $$ = make_node(scanner, NODE_TYPE_DECLARATOR);
1997                         $$->u.type_declarator.type = TYPEDEC_ID;
1998                         /* id is NULL */
1999                 }
2000         |       IDENTIFIER
2001                 {
2002                         $$ = make_node(scanner, NODE_TYPE_DECLARATOR);
2003                         $$->u.type_declarator.type = TYPEDEC_ID;
2004                         $$->u.type_declarator.u.id = $1->s;
2005                 }
2006         |       LPAREN abstract_declarator RPAREN
2007                 {
2008                         $$ = make_node(scanner, NODE_TYPE_DECLARATOR);
2009                         $$->u.type_declarator.type = TYPEDEC_NESTED;
2010                         $$->u.type_declarator.u.nested.type_declarator = $2;
2011                 }
2012         |       direct_abstract_declarator LSBRAC declaration_specifiers_or_integer_constant RSBRAC
2013                 {
2014                         $$ = make_node(scanner, NODE_TYPE_DECLARATOR);
2015                         $$->u.type_declarator.type = TYPEDEC_NESTED;
2016                         $$->u.type_declarator.u.nested.type_declarator = $1;
2017                         ($$)->u.type_declarator.u.nested.length = $3;
2018                 }
2019         |       direct_abstract_declarator LSBRAC RSBRAC
2020                 {
2021                         $$ = make_node(scanner, NODE_TYPE_DECLARATOR);
2022                         $$->u.type_declarator.type = TYPEDEC_NESTED;
2023                         $$->u.type_declarator.u.nested.type_declarator = $1;
2024                         $$->u.type_declarator.u.nested.abstract_array = 1;
2025                 }
2026         ;
2027
2028 alias_abstract_declarator_list:
2029                 alias_abstract_declarator
2030                 {       $$ = $1;        }
2031         |       alias_abstract_declarator_list COMMA alias_abstract_declarator
2032                 {
2033                         $$ = $1;
2034                         cds_list_add_tail(&($3)->siblings, &($$)->tmp_head);
2035                 }
2036         ;
2037
2038 alias_abstract_declarator:
2039                 direct_alias_abstract_declarator
2040                 {       $$ = $1;        }
2041         |       pointer direct_alias_abstract_declarator
2042                 {
2043                         $$ = $2;
2044                         cds_list_splice(&($1)->tmp_head, &($$)->u.type_declarator.pointers);
2045                 }
2046         ;
2047
2048 direct_alias_abstract_declarator:
2049                 /* empty */
2050                 {
2051                         $$ = make_node(scanner, NODE_TYPE_DECLARATOR);
2052                         $$->u.type_declarator.type = TYPEDEC_ID;
2053                         /* id is NULL */
2054                 }
2055         |       LPAREN alias_abstract_declarator RPAREN
2056                 {
2057                         $$ = make_node(scanner, NODE_TYPE_DECLARATOR);
2058                         $$->u.type_declarator.type = TYPEDEC_NESTED;
2059                         $$->u.type_declarator.u.nested.type_declarator = $2;
2060                 }
2061         |       direct_alias_abstract_declarator LSBRAC declaration_specifiers_or_integer_constant RSBRAC
2062                 {
2063                         $$ = make_node(scanner, NODE_TYPE_DECLARATOR);
2064                         $$->u.type_declarator.type = TYPEDEC_NESTED;
2065                         $$->u.type_declarator.u.nested.type_declarator = $1;
2066                         ($$)->u.type_declarator.u.nested.length = $3;
2067                 }
2068         |       direct_alias_abstract_declarator LSBRAC RSBRAC
2069                 {
2070                         $$ = make_node(scanner, NODE_TYPE_DECLARATOR);
2071                         $$->u.type_declarator.type = TYPEDEC_NESTED;
2072                         $$->u.type_declarator.u.nested.type_declarator = $1;
2073                         $$->u.type_declarator.u.nested.abstract_array = 1;
2074                 }
2075         ;
2076
2077 declarator:
2078                 direct_declarator
2079                 {       $$ = $1;        }
2080         |       pointer direct_declarator
2081                 {
2082                         $$ = $2;
2083                         cds_list_splice(&($1)->tmp_head, &($$)->u.type_declarator.pointers);
2084                 }
2085         ;
2086
2087 direct_declarator:
2088                 IDENTIFIER
2089                 {
2090                         $$ = make_node(scanner, NODE_TYPE_DECLARATOR);
2091                         $$->u.type_declarator.type = TYPEDEC_ID;
2092                         $$->u.type_declarator.u.id = $1->s;
2093                 }
2094         |       LPAREN declarator RPAREN
2095                 {
2096                         $$ = make_node(scanner, NODE_TYPE_DECLARATOR);
2097                         $$->u.type_declarator.type = TYPEDEC_NESTED;
2098                         $$->u.type_declarator.u.nested.type_declarator = $2;
2099                 }
2100         |       direct_declarator LSBRAC declaration_specifiers_or_integer_constant RSBRAC
2101                 {
2102                         $$ = make_node(scanner, NODE_TYPE_DECLARATOR);
2103                         $$->u.type_declarator.type = TYPEDEC_NESTED;
2104                         $$->u.type_declarator.u.nested.type_declarator = $1;
2105                         ($$)->u.type_declarator.u.nested.length = $3;
2106                 }
2107         ;
2108
2109 type_declarator:
2110                 direct_type_declarator
2111                 {       $$ = $1;        }
2112         |       pointer direct_type_declarator
2113                 {
2114                         $$ = $2;
2115                         cds_list_splice(&($1)->tmp_head, &($$)->u.type_declarator.pointers);
2116                 }
2117         ;
2118
2119 direct_type_declarator:
2120                 IDENTIFIER
2121                 {
2122                         add_type(scanner, $1);
2123                         $$ = make_node(scanner, NODE_TYPE_DECLARATOR);
2124                         $$->u.type_declarator.type = TYPEDEC_ID;
2125                         $$->u.type_declarator.u.id = $1->s;
2126                 }
2127         |       LPAREN type_declarator RPAREN
2128                 {
2129                         $$ = make_node(scanner, NODE_TYPE_DECLARATOR);
2130                         $$->u.type_declarator.type = TYPEDEC_NESTED;
2131                         $$->u.type_declarator.u.nested.type_declarator = $2;
2132                 }
2133         |       direct_type_declarator LSBRAC declaration_specifiers_or_integer_constant RSBRAC
2134                 {
2135                         $$ = make_node(scanner, NODE_TYPE_DECLARATOR);
2136                         $$->u.type_declarator.type = TYPEDEC_NESTED;
2137                         $$->u.type_declarator.u.nested.type_declarator = $1;
2138                         ($$)->u.type_declarator.u.nested.length = $3;
2139                 }
2140         ;
2141
2142 pointer:
2143                 STAR
2144                 {
2145                         $$ = make_node(scanner, NODE_POINTER);
2146                 }
2147         |       STAR pointer
2148                 {
2149                         $$ = make_node(scanner, NODE_POINTER);
2150                         cds_list_splice(&($2)->tmp_head, &($$)->tmp_head);
2151                 }
2152         |       STAR type_qualifier_list pointer
2153                 {
2154                         $$ = make_node(scanner, NODE_POINTER);
2155                         $$->u.pointer.const_qualifier = 1;
2156                         cds_list_splice(&($3)->tmp_head, &($$)->tmp_head);
2157                 }
2158         ;
2159
2160 type_qualifier_list:
2161                 /* pointer assumes only const type qualifier */
2162                 CONST
2163         |       type_qualifier_list CONST
2164         ;
2165
2166 /* 2.3: CTF-specific declarations */
2167
2168 ctf_assignment_expression_list:
2169                 ctf_assignment_expression SEMICOLON
2170                 {       $$ = $1;        }
2171         |       ctf_assignment_expression_list ctf_assignment_expression SEMICOLON
2172                 {
2173                         $$ = $1;
2174                         cds_list_add_tail(&($2)->siblings, &($$)->tmp_head);
2175                 }
2176         ;
2177
2178 ctf_assignment_expression:
2179                 unary_expression EQUAL unary_expression
2180                 {
2181                         /*
2182                          * Because we have left and right, cannot use
2183                          * set_parent_node.
2184                          */
2185                         $$ = make_node(scanner, NODE_CTF_EXPRESSION);
2186                         _cds_list_splice_tail(&($1)->tmp_head, &($$)->u.ctf_expression.left);
2187                         if ($1->u.unary_expression.type != UNARY_STRING)
2188                                 reparent_error(scanner, "ctf_assignment_expression left expects string");
2189                         _cds_list_splice_tail(&($3)->tmp_head, &($$)->u.ctf_expression.right);
2190                 }
2191         |       unary_expression TYPEASSIGN declaration_specifiers      /* Only allow struct */
2192                 {
2193                         /*
2194                          * Because we have left and right, cannot use
2195                          * set_parent_node.
2196                          */
2197                         $$ = make_node(scanner, NODE_CTF_EXPRESSION);
2198                         _cds_list_splice_tail(&($1)->tmp_head, &($$)->u.ctf_expression.left);
2199                         if ($1->u.unary_expression.type != UNARY_STRING)
2200                                 reparent_error(scanner, "ctf_assignment_expression left expects string");
2201                         cds_list_add_tail(&($3)->siblings, &($$)->u.ctf_expression.right);
2202                 }
2203         |       declaration_specifiers TYPEDEF declaration_specifiers type_declarator_list
2204                 {
2205                         struct ctf_node *list;
2206
2207                         list = make_node(scanner, NODE_TYPE_SPECIFIER_LIST);
2208                         _cds_list_splice_tail(&($1)->u.type_specifier_list.head, &list->u.type_specifier_list.head);
2209                         _cds_list_splice_tail(&($3)->u.type_specifier_list.head, &list->u.type_specifier_list.head);
2210                         $$ = make_node(scanner, NODE_TYPEDEF);
2211                         ($$)->u.struct_or_variant_declaration.type_specifier_list = list;
2212                         _cds_list_splice_tail(&($4)->tmp_head, &($$)->u._typedef.type_declarators);
2213                 }
2214         |       TYPEDEF declaration_specifiers type_declarator_list
2215                 {
2216                         struct ctf_node *list;
2217
2218                         $$ = make_node(scanner, NODE_TYPEDEF);
2219                         list = make_node(scanner, NODE_TYPE_SPECIFIER_LIST);
2220                         $$->u._typedef.type_specifier_list = list;
2221                         _cds_list_splice_tail(&($2)->u.type_specifier_list.head, &list->u.type_specifier_list.head);
2222                         _cds_list_splice_tail(&($3)->tmp_head, &($$)->u._typedef.type_declarators);
2223                 }
2224         |       declaration_specifiers TYPEDEF type_declarator_list
2225                 {
2226                         struct ctf_node *list;
2227
2228                         list = make_node(scanner, NODE_TYPE_SPECIFIER_LIST);
2229                         _cds_list_splice_tail(&($1)->u.type_specifier_list.head, &list->u.type_specifier_list.head);
2230                         $$ = make_node(scanner, NODE_TYPEDEF);
2231                         ($$)->u.struct_or_variant_declaration.type_specifier_list = list;
2232                         _cds_list_splice_tail(&($3)->tmp_head, &($$)->u._typedef.type_declarators);
2233                 }
2234         |       TYPEALIAS declaration_specifiers abstract_declarator_list TYPEASSIGN alias_declaration_specifiers alias_abstract_declarator_list
2235                 {
2236                         struct ctf_node *list;
2237
2238                         $$ = make_node(scanner, NODE_TYPEALIAS);
2239                         $$->u.typealias.target = make_node(scanner, NODE_TYPEALIAS_TARGET);
2240                         $$->u.typealias.alias = make_node(scanner, NODE_TYPEALIAS_ALIAS);
2241
2242                         list = make_node(scanner, NODE_TYPE_SPECIFIER_LIST);
2243                         $$->u.typealias.target->u.typealias_target.type_specifier_list = list;
2244                         _cds_list_splice_tail(&($2)->u.type_specifier_list.head, &list->u.type_specifier_list.head);
2245                         _cds_list_splice_tail(&($3)->tmp_head, &($$)->u.typealias.target->u.typealias_target.type_declarators);
2246
2247                         list = make_node(scanner, NODE_TYPE_SPECIFIER_LIST);
2248                         $$->u.typealias.alias->u.typealias_alias.type_specifier_list = list;
2249                         _cds_list_splice_tail(&($5)->u.type_specifier_list.head, &list->u.type_specifier_list.head);
2250                         _cds_list_splice_tail(&($6)->tmp_head, &($$)->u.typealias.alias->u.typealias_alias.type_declarators);
2251                 }
2252         ;