scan.l revision 1.35
1 %{ 2 /* $NetBSD: scan.l,v 1.35 2006/10/16 13:33:57 he Exp $ */ 3 4 /* 5 * Copyright (c) 1996 Christopher G. Demetriou. All Rights Reserved. 6 * Copyright (c) 1994, 1995 Jochen Pohl 7 * All Rights Reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed by Jochen Pohl for 20 * The NetBSD Project. 21 * 4. The name of the author may not be used to endorse or promote products 22 * derived from this software without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 25 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 26 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 27 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 28 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 29 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 30 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 31 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 32 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 33 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 34 */ 35 36 #include <sys/cdefs.h> 37 #if defined(__RCSID) && !defined(lint) 38 __RCSID("$NetBSD: scan.l,v 1.35 2006/10/16 13:33:57 he Exp $"); 39 #endif 40 41 #include <stdlib.h> 42 #include <string.h> 43 #include <limits.h> 44 #include <float.h> 45 #include <ctype.h> 46 #include <errno.h> 47 #include <math.h> 48 49 #include "lint1.h" 50 #include "cgram.h" 51 52 #define CHAR_MASK (~(~0 << CHAR_BIT)) 53 #define YY_NO_UNPUT 54 55 /* Current position (its also updated when an included file is parsed) */ 56 pos_t curr_pos = { 1, "", 0 }; 57 58 /* 59 * Current position in C source (not updated when an included file is 60 * parsed). 61 */ 62 pos_t csrc_pos = { 1, "", 0 }; 63 64 static void incline(void); 65 static void badchar(int); 66 static sbuf_t *allocsb(void); 67 static void freesb(sbuf_t *); 68 static int inpc(void); 69 static int hash(const char *); 70 static sym_t *search(sbuf_t *); 71 static int name(void); 72 static int keyw(sym_t *); 73 static int icon(int); 74 static int fcon(void); 75 static int operator(int, op_t); 76 static int ccon(void); 77 static int wccon(void); 78 static int getescc(int); 79 static void directive(void); 80 static void comment(void); 81 static void slashslashcomment(void); 82 static int string(void); 83 static int wcstrg(void); 84 85 %} 86 87 L [_A-Za-z] 88 D [0-9] 89 NZD [1-9] 90 OD [0-7] 91 HD [0-9A-Fa-f] 92 EX ([eE][+-]?[0-9]+) 93 94 %% 95 96 {L}({L}|{D})* return (name()); 97 0{OD}*[lLuU]* return (icon(8)); 98 {NZD}{D}*[lLuU]* return (icon(10)); 99 0[xX]{HD}+[lLuU]* return (icon(16)); 100 {D}+\.{D}*{EX}?[fFlL]? | 101 {D}+{EX}[fFlL]? | 102 \.{D}+{EX}?[fFlL]? return (fcon()); 103 "=" return (operator(T_ASSIGN, ASSIGN)); 104 "*=" return (operator(T_OPASS, MULASS)); 105 "/=" return (operator(T_OPASS, DIVASS)); 106 "%=" return (operator(T_OPASS, MODASS)); 107 "+=" return (operator(T_OPASS, ADDASS)); 108 "-=" return (operator(T_OPASS, SUBASS)); 109 "<<=" return (operator(T_OPASS, SHLASS)); 110 ">>=" return (operator(T_OPASS, SHRASS)); 111 "&=" return (operator(T_OPASS, ANDASS)); 112 "^=" return (operator(T_OPASS, XORASS)); 113 "|=" return (operator(T_OPASS, ORASS)); 114 "||" return (operator(T_LOGOR, LOGOR)); 115 "&&" return (operator(T_LOGAND, LOGAND)); 116 "|" return (operator(T_OR, OR)); 117 "&" return (operator(T_AND, AND)); 118 "^" return (operator(T_XOR, XOR)); 119 "==" return (operator(T_EQOP, EQ)); 120 "!=" return (operator(T_EQOP, NE)); 121 "<" return (operator(T_RELOP, LT)); 122 ">" return (operator(T_RELOP, GT)); 123 "<=" return (operator(T_RELOP, LE)); 124 ">=" return (operator(T_RELOP, GE)); 125 "<<" return (operator(T_SHFTOP, SHL)); 126 ">>" return (operator(T_SHFTOP, SHR)); 127 "++" return (operator(T_INCDEC, INC)); 128 "--" return (operator(T_INCDEC, DEC)); 129 "->" return (operator(T_STROP, ARROW)); 130 "." return (operator(T_STROP, POINT)); 131 "+" return (operator(T_ADDOP, PLUS)); 132 "-" return (operator(T_ADDOP, MINUS)); 133 "*" return (operator(T_MULT, MULT)); 134 "/" return (operator(T_DIVOP, DIV)); 135 "%" return (operator(T_DIVOP, MOD)); 136 "!" return (operator(T_UNOP, NOT)); 137 "~" return (operator(T_UNOP, COMPL)); 138 "\"" return (string()); 139 "L\"" return (wcstrg()); 140 ";" return (T_SEMI); 141 "{" return (T_LBRACE); 142 "}" return (T_RBRACE); 143 "," return (T_COMMA); 144 ":" return (T_COLON); 145 "?" return (T_QUEST); 146 "[" return (T_LBRACK); 147 "]" return (T_RBRACK); 148 "(" return (T_LPARN); 149 ")" return (T_RPARN); 150 "..." return (T_ELLIPSE); 151 "'" return (ccon()); 152 "L'" return (wccon()); 153 ^#.*$ directive(); 154 \n incline(); 155 \t|" "|\f|\v ; 156 "/*" comment(); 157 "//" slashslashcomment(); 158 . badchar(yytext[0]); 159 160 %% 161 162 static void 163 incline(void) 164 { 165 curr_pos.p_line++; 166 curr_pos.p_uniq = 0; 167 if (curr_pos.p_file == csrc_pos.p_file) { 168 csrc_pos.p_line++; 169 csrc_pos.p_uniq = 0; 170 } 171 } 172 173 static void 174 badchar(int c) 175 { 176 177 /* unknown character \%o */ 178 error(250, c); 179 } 180 181 /* 182 * Keywords. 183 * During initialisation they are written to the symbol table. 184 */ 185 static struct kwtab { 186 const char *kw_name; /* keyword */ 187 int kw_token; /* token returned by yylex() */ 188 scl_t kw_scl; /* storage class if kw_token T_SCLASS */ 189 tspec_t kw_tspec; /* type spec. if kw_token T_TYPE or T_SOU */ 190 tqual_t kw_tqual; /* type qual. fi kw_token T_QUAL */ 191 u_int kw_c89; /* c89 keyword */ 192 u_int kw_c99; /* c99 keyword */ 193 u_int kw_gcc; /* GCC keyword */ 194 } kwtab[] = { 195 { "asm", T_ASM, 0, 0, 0, 0, 0, 1 }, 196 { "__asm", T_ASM, 0, 0, 0, 0, 0, 0 }, 197 { "__asm__", T_ASM, 0, 0, 0, 0, 0, 0 }, 198 { "auto", T_SCLASS, AUTO, 0, 0, 0, 0, 0 }, 199 { "break", T_BREAK, 0, 0, 0, 0, 0, 0 }, 200 { "_Bool", T_TYPE, 0, BOOL, 0, 0, 1, 0 }, 201 { "case", T_CASE, 0, 0, 0, 0, 0, 0 }, 202 { "char", T_TYPE, 0, CHAR, 0, 0, 0, 0 }, 203 { "const", T_QUAL, 0, 0, CONST, 1, 0, 0 }, 204 { "__const__", T_QUAL, 0, 0, CONST, 0, 0, 0 }, 205 { "__const", T_QUAL, 0, 0, CONST, 0, 0, 0 }, 206 { "continue", T_CONTINUE, 0, 0, 0, 0, 0, 0 }, 207 { "default", T_DEFAULT, 0, 0, 0, 0, 0, 0 }, 208 { "do", T_DO, 0, 0, 0, 0, 0, 0 }, 209 { "double", T_TYPE, 0, DOUBLE, 0, 0, 0, 0 }, 210 { "else", T_ELSE, 0, 0, 0, 0, 0, 0 }, 211 { "enum", T_ENUM, 0, 0, 0, 0, 0, 0 }, 212 { "extern", T_SCLASS, EXTERN, 0, 0, 0, 0, 0 }, 213 { "float", T_TYPE, 0, FLOAT, 0, 0, 0, 0 }, 214 { "for", T_FOR, 0, 0, 0, 0, 0, 0 }, 215 { "goto", T_GOTO, 0, 0, 0, 0, 0, 0 }, 216 { "if", T_IF, 0, 0, 0, 0, 0, 0 }, 217 { "inline", T_SCLASS, INLINE, 0, 0, 0, 1, 0 }, 218 { "__inline__", T_SCLASS, INLINE, 0, 0, 0, 0, 0 }, 219 { "__inline", T_SCLASS, INLINE, 0, 0, 0, 0, 0 }, 220 { "int", T_TYPE, 0, INT, 0, 0, 0, 0 }, 221 { "__symbolrename", T_SYMBOLRENAME, 0, 0, 0, 0, 0, 0 }, 222 { "long", T_TYPE, 0, LONG, 0, 0, 0, 0 }, 223 { "register", T_SCLASS, REG, 0, 0, 0, 0, 0 }, 224 { "return", T_RETURN, 0, 0, 0, 0, 0, 0 }, 225 { "short", T_TYPE, 0, SHORT, 0, 0, 0, 0 }, 226 { "signed", T_TYPE, 0, SIGNED, 0, 1, 0, 0 }, 227 { "__signed__", T_TYPE, 0, SIGNED, 0, 0, 0, 0 }, 228 { "__signed", T_TYPE, 0, SIGNED, 0, 0, 0, 0 }, 229 { "sizeof", T_SIZEOF, 0, 0, 0, 0, 0, 0 }, 230 { "static", T_SCLASS, STATIC, 0, 0, 0, 0, 0 }, 231 { "struct", T_SOU, 0, STRUCT, 0, 0, 0, 0 }, 232 { "switch", T_SWITCH, 0, 0, 0, 0, 0, 0 }, 233 { "typedef", T_SCLASS, TYPEDEF, 0, 0, 0, 0, 0 }, 234 { "union", T_SOU, 0, UNION, 0, 0, 0, 0 }, 235 { "unsigned", T_TYPE, 0, UNSIGN, 0, 0, 0, 0 }, 236 { "void", T_TYPE, 0, VOID, 0, 0, 0, 0 }, 237 { "volatile", T_QUAL, 0, 0, VOLATILE, 1, 0, 0 }, 238 { "__volatile__", T_QUAL, 0, 0, VOLATILE, 0, 0, 0 }, 239 { "__volatile", T_QUAL, 0, 0, VOLATILE, 0, 0, 0 }, 240 { "while", T_WHILE, 0, 0, 0, 0, 0, 0 }, 241 { NULL, 0, 0, 0, 0, 0, 0, 0 } 242 }; 243 244 /* Symbol table */ 245 static sym_t *symtab[HSHSIZ1]; 246 247 /* bit i of the entry with index i is set */ 248 uint64_t qbmasks[sizeof(uint64_t) * CHAR_BIT]; 249 250 /* least significant i bits are set in the entry with index i */ 251 uint64_t qlmasks[sizeof(uint64_t) * CHAR_BIT + 1]; 252 253 /* least significant i bits are not set in the entry with index i */ 254 uint64_t qumasks[sizeof(uint64_t) * CHAR_BIT + 1]; 255 256 /* free list for sbuf structures */ 257 static sbuf_t *sbfrlst; 258 259 /* Typ of next expected symbol */ 260 symt_t symtyp; 261 262 263 /* 264 * All keywords are written to the symbol table. This saves us looking 265 * in a extra table for each name we found. 266 */ 267 void 268 initscan(void) 269 { 270 struct kwtab *kw; 271 sym_t *sym; 272 int h, i; 273 uint64_t uq; 274 275 for (kw = kwtab; kw->kw_name != NULL; kw++) { 276 if ((kw->kw_c89 || kw->kw_c99) && tflag) 277 continue; 278 if (kw->kw_c99 && !(Sflag || gflag)) 279 continue; 280 if (kw->kw_gcc && !gflag) 281 continue; 282 sym = getblk(sizeof (sym_t)); 283 sym->s_name = kw->kw_name; 284 sym->s_keyw = 1; 285 sym->s_value.v_quad = kw->kw_token; 286 if (kw->kw_token == T_TYPE || kw->kw_token == T_SOU) { 287 sym->s_tspec = kw->kw_tspec; 288 } else if (kw->kw_token == T_SCLASS) { 289 sym->s_scl = kw->kw_scl; 290 } else if (kw->kw_token == T_QUAL) { 291 sym->s_tqual = kw->kw_tqual; 292 } 293 h = hash(sym->s_name); 294 if ((sym->s_link = symtab[h]) != NULL) 295 symtab[h]->s_rlink = &sym->s_link; 296 (symtab[h] = sym)->s_rlink = &symtab[h]; 297 } 298 299 /* initialize bit-masks for quads */ 300 for (i = 0; i < sizeof (uint64_t) * CHAR_BIT; i++) { 301 qbmasks[i] = (uint64_t)1 << i; 302 uq = ~(uint64_t)0 << i; 303 qumasks[i] = uq; 304 qlmasks[i] = ~uq; 305 } 306 qumasks[i] = 0; 307 qlmasks[i] = ~(uint64_t)0; 308 } 309 310 /* 311 * Get a free sbuf structure, if possible from the free list 312 */ 313 static sbuf_t * 314 allocsb(void) 315 { 316 sbuf_t *sb; 317 318 if ((sb = sbfrlst) != NULL) { 319 sbfrlst = sb->sb_nxt; 320 } else { 321 sb = xmalloc(sizeof (sbuf_t)); 322 } 323 (void)memset(sb, 0, sizeof (sb)); 324 return (sb); 325 } 326 327 /* 328 * Put a sbuf structure to the free list 329 */ 330 static void 331 freesb(sbuf_t *sb) 332 { 333 334 sb->sb_nxt = sbfrlst; 335 sbfrlst = sb; 336 } 337 338 /* 339 * Read a character and ensure that it is positive (except EOF). 340 * Increment line count(s) if necessary. 341 */ 342 static int 343 inpc(void) 344 { 345 int c; 346 347 if ((c = input()) != EOF && (c &= CHAR_MASK) == '\n') 348 incline(); 349 return (c); 350 } 351 352 static int 353 hash(const char *s) 354 { 355 u_int v; 356 const u_char *us; 357 358 v = 0; 359 for (us = (const u_char *)s; *us != '\0'; us++) { 360 v = (v << sizeof (v)) + *us; 361 v ^= v >> (sizeof (v) * CHAR_BIT - sizeof (v)); 362 } 363 return (v % HSHSIZ1); 364 } 365 366 /* 367 * Lex has found a letter followed by zero or more letters or digits. 368 * It looks for a symbol in the symbol table with the same name. This 369 * symbol must either be a keyword or a symbol of the type required by 370 * symtyp (label, member, tag, ...). 371 * 372 * If it is a keyword, the token is returned. In some cases it is described 373 * more deeply by data written to yylval. 374 * 375 * If it is a symbol, T_NAME is returned and the pointer to a sbuf struct 376 * is stored in yylval. This struct contains the name of the symbol, it's 377 * length and hash value. If there is already a symbol of the same name 378 * and type in the symbol table, the sbuf struct also contains a pointer 379 * to the symbol table entry. 380 */ 381 static int 382 name(void) 383 { 384 char *s; 385 sbuf_t *sb; 386 sym_t *sym; 387 int tok; 388 389 sb = allocsb(); 390 sb->sb_name = yytext; 391 sb->sb_len = yyleng; 392 sb->sb_hash = hash(yytext); 393 394 if ((sym = search(sb)) != NULL && sym->s_keyw) { 395 freesb(sb); 396 return (keyw(sym)); 397 } 398 399 sb->sb_sym = sym; 400 401 if (sym != NULL) { 402 if (blklev < sym->s_blklev) 403 LERROR("name()"); 404 sb->sb_name = sym->s_name; 405 sb->sb_len = strlen(sym->s_name); 406 tok = sym->s_scl == TYPEDEF ? T_TYPENAME : T_NAME; 407 } else { 408 s = getblk(yyleng + 1); 409 (void)memcpy(s, yytext, yyleng + 1); 410 sb->sb_name = s; 411 sb->sb_len = yyleng; 412 tok = T_NAME; 413 } 414 415 yylval.y_sb = sb; 416 return (tok); 417 } 418 419 static sym_t * 420 search(sbuf_t *sb) 421 { 422 sym_t *sym; 423 424 for (sym = symtab[sb->sb_hash]; sym != NULL; sym = sym->s_link) { 425 if (strcmp(sym->s_name, sb->sb_name) == 0) { 426 if (sym->s_keyw || sym->s_kind == symtyp) 427 return (sym); 428 } 429 } 430 431 return (NULL); 432 } 433 434 static int 435 keyw(sym_t *sym) 436 { 437 int t; 438 439 if ((t = (int)sym->s_value.v_quad) == T_SCLASS) { 440 yylval.y_scl = sym->s_scl; 441 } else if (t == T_TYPE || t == T_SOU) { 442 yylval.y_tspec = sym->s_tspec; 443 } else if (t == T_QUAL) { 444 yylval.y_tqual = sym->s_tqual; 445 } 446 return (t); 447 } 448 449 /* 450 * Convert a string representing an integer into internal representation. 451 * The value is returned in yylval. icon() (and yylex()) returns T_CON. 452 */ 453 static int 454 icon(int base) 455 { 456 int l_suffix, u_suffix; 457 int len; 458 const char *cp; 459 char c, *eptr; 460 tspec_t typ; 461 uint64_t uq = 0; 462 int ansiu; 463 static tspec_t contypes[2][3] = { 464 { INT, LONG, QUAD }, 465 { UINT, ULONG, UQUAD } 466 }; 467 468 cp = yytext; 469 len = yyleng; 470 471 /* skip 0x */ 472 if (base == 16) { 473 cp += 2; 474 len -= 2; 475 } 476 477 /* read suffixes */ 478 l_suffix = u_suffix = 0; 479 for ( ; ; ) { 480 if ((c = cp[len - 1]) == 'l' || c == 'L') { 481 l_suffix++; 482 } else if (c == 'u' || c == 'U') { 483 u_suffix++; 484 } else { 485 break; 486 } 487 len--; 488 } 489 if (l_suffix > 2 || u_suffix > 1) { 490 /* malformed integer constant */ 491 warning(251); 492 if (l_suffix > 2) 493 l_suffix = 2; 494 if (u_suffix > 1) 495 u_suffix = 1; 496 } 497 if (tflag && u_suffix != 0) { 498 /* suffix U is illegal in traditional C */ 499 warning(97); 500 } 501 typ = contypes[u_suffix][l_suffix]; 502 503 errno = 0; 504 505 uq = strtouq(cp, &eptr, base); 506 if (eptr != cp + len) 507 LERROR("icon()"); 508 if (errno != 0) 509 /* integer constant out of range */ 510 warning(252); 511 512 /* 513 * If the value is too big for the current type, we must choose 514 * another type. 515 */ 516 ansiu = 0; 517 switch (typ) { 518 case INT: 519 if (uq <= TARG_INT_MAX) { 520 /* ok */ 521 } else if (uq <= TARG_UINT_MAX && base != 10) { 522 typ = UINT; 523 } else if (uq <= TARG_LONG_MAX) { 524 typ = LONG; 525 } else { 526 typ = ULONG; 527 if (uq > TARG_ULONG_MAX) { 528 /* integer constant out of range */ 529 warning(252); 530 } 531 } 532 if (typ == UINT || typ == ULONG) { 533 if (tflag) { 534 typ = LONG; 535 } else if (!sflag) { 536 /* 537 * Remember that the constant is unsigned 538 * only in ANSI C 539 */ 540 ansiu = 1; 541 } 542 } 543 break; 544 case UINT: 545 if (uq > TARG_UINT_MAX) { 546 typ = ULONG; 547 if (uq > TARG_ULONG_MAX) { 548 /* integer constant out of range */ 549 warning(252); 550 } 551 } 552 break; 553 case LONG: 554 if (uq > TARG_LONG_MAX && !tflag) { 555 typ = ULONG; 556 if (!sflag) 557 ansiu = 1; 558 if (uq > TARG_ULONG_MAX) { 559 /* integer constant out of range */ 560 warning(252); 561 } 562 } 563 break; 564 case QUAD: 565 if (uq > TARG_QUAD_MAX && !tflag) { 566 typ = UQUAD; 567 if (!sflag) 568 ansiu = 1; 569 } 570 break; 571 /* LINTED (enumeration values not handled in switch) */ 572 case STRUCT: 573 case VOID: 574 case LDOUBLE: 575 case FUNC: 576 case ARRAY: 577 case PTR: 578 case ENUM: 579 case UNION: 580 case SIGNED: 581 case NOTSPEC: 582 case DOUBLE: 583 case FLOAT: 584 case UQUAD: 585 case ULONG: 586 case USHORT: 587 case SHORT: 588 case UCHAR: 589 case SCHAR: 590 case CHAR: 591 case BOOL: 592 case UNSIGN: 593 break; 594 595 case NTSPEC: /* this value unused */ 596 break; 597 } 598 599 uq = (uint64_t)xsign((int64_t)uq, typ, -1); 600 601 (yylval.y_val = xcalloc(1, sizeof (val_t)))->v_tspec = typ; 602 yylval.y_val->v_ansiu = ansiu; 603 yylval.y_val->v_quad = (int64_t)uq; 604 605 return (T_CON); 606 } 607 608 /* 609 * Returns 1 if t is a signed type and the value is negative. 610 * 611 * len is the number of significant bits. If len is -1, len is set 612 * to the width of type t. 613 */ 614 int 615 sign(int64_t q, tspec_t t, int len) 616 { 617 618 if (t == PTR || isutyp(t)) 619 return (0); 620 return (msb(q, t, len)); 621 } 622 623 int 624 msb(int64_t q, tspec_t t, int len) 625 { 626 627 if (len <= 0) 628 len = size(t); 629 return ((q & qbmasks[len - 1]) != 0); 630 } 631 632 /* 633 * Extends the sign of q. 634 */ 635 int64_t 636 xsign(int64_t q, tspec_t t, int len) 637 { 638 639 if (len <= 0) 640 len = size(t); 641 642 if (t == PTR || isutyp(t) || !sign(q, t, len)) { 643 q &= qlmasks[len]; 644 } else { 645 q |= qumasks[len]; 646 } 647 return (q); 648 } 649 650 /* 651 * Convert a string representing a floating point value into its interal 652 * representation. Type and value are returned in yylval. fcon() 653 * (and yylex()) returns T_CON. 654 * XXX Currently it is not possible to convert constants of type 655 * long double which are greater than DBL_MAX. 656 */ 657 static int 658 fcon(void) 659 { 660 const char *cp; 661 int len; 662 tspec_t typ; 663 char c, *eptr; 664 double d; 665 float f = 0; 666 667 cp = yytext; 668 len = yyleng; 669 670 if ((c = cp[len - 1]) == 'f' || c == 'F') { 671 typ = FLOAT; 672 len--; 673 } else if (c == 'l' || c == 'L') { 674 typ = LDOUBLE; 675 len--; 676 } else { 677 typ = DOUBLE; 678 } 679 680 if (tflag && typ != DOUBLE) { 681 /* suffixes F and L are illegal in traditional C */ 682 warning(98); 683 } 684 685 errno = 0; 686 d = strtod(cp, &eptr); 687 if (eptr != cp + len) 688 LERROR("fcon()"); 689 if (errno != 0) 690 /* floating-point constant out of range */ 691 warning(248); 692 693 if (typ == FLOAT) { 694 f = (float)d; 695 if (!finite(f)) { 696 /* floating-point constant out of range */ 697 warning(248); 698 f = f > 0 ? FLT_MAX : -FLT_MAX; 699 } 700 } 701 702 (yylval.y_val = xcalloc(1, sizeof (val_t)))->v_tspec = typ; 703 if (typ == FLOAT) { 704 yylval.y_val->v_ldbl = f; 705 } else { 706 yylval.y_val->v_ldbl = d; 707 } 708 709 return (T_CON); 710 } 711 712 static int 713 operator(int t, op_t o) 714 { 715 716 yylval.y_op = o; 717 return (t); 718 } 719 720 /* 721 * Called if lex found a leading \'. 722 */ 723 static int 724 ccon(void) 725 { 726 int n, val, c; 727 char cv; 728 729 n = 0; 730 val = 0; 731 while ((c = getescc('\'')) >= 0) { 732 val = (val << CHAR_BIT) + c; 733 n++; 734 } 735 if (c == -2) { 736 /* unterminated character constant */ 737 error(253); 738 } else { 739 if (n > sizeof (int) || (n > 1 && (pflag || hflag))) { 740 /* too many characters in character constant */ 741 error(71); 742 } else if (n > 1) { 743 /* multi-character character constant */ 744 warning(294); 745 } else if (n == 0) { 746 /* empty character constant */ 747 error(73); 748 } 749 } 750 if (n == 1) { 751 cv = (char)val; 752 val = cv; 753 } 754 755 yylval.y_val = xcalloc(1, sizeof (val_t)); 756 yylval.y_val->v_tspec = INT; 757 yylval.y_val->v_quad = val; 758 759 return (T_CON); 760 } 761 762 /* 763 * Called if lex found a leading L\' 764 */ 765 static int 766 wccon(void) 767 { 768 static char buf[MB_LEN_MAX + 1]; 769 int i, c; 770 wchar_t wc; 771 772 i = 0; 773 while ((c = getescc('\'')) >= 0) { 774 if (i < MB_CUR_MAX) 775 buf[i] = (char)c; 776 i++; 777 } 778 779 wc = 0; 780 781 if (c == -2) { 782 /* unterminated character constant */ 783 error(253); 784 } else if (c == 0) { 785 /* empty character constant */ 786 error(73); 787 } else { 788 if (i > MB_CUR_MAX) { 789 i = MB_CUR_MAX; 790 /* too many characters in character constant */ 791 error(71); 792 } else { 793 buf[i] = '\0'; 794 (void)mbtowc(NULL, NULL, 0); 795 if (mbtowc(&wc, buf, MB_CUR_MAX) < 0) 796 /* invalid multibyte character */ 797 error(291); 798 } 799 } 800 801 yylval.y_val = xcalloc(1, sizeof (val_t)); 802 yylval.y_val->v_tspec = WCHAR; 803 yylval.y_val->v_quad = wc; 804 805 return (T_CON); 806 } 807 808 /* 809 * Read a character which is part of a character constant or of a string 810 * and handle escapes. 811 * 812 * The Argument is the character which delimits the character constant or 813 * string. 814 * 815 * Returns -1 if the end of the character constant or string is reached, 816 * -2 if the EOF is reached, and the character otherwise. 817 */ 818 static int 819 getescc(int d) 820 { 821 static int pbc = -1; 822 int n, c, v; 823 824 if (pbc == -1) { 825 c = inpc(); 826 } else { 827 c = pbc; 828 pbc = -1; 829 } 830 if (c == d) 831 return (-1); 832 switch (c) { 833 case '\n': 834 if (tflag) { 835 /* newline in string or char constant */ 836 error(254); 837 return (-2); 838 } 839 return (c); 840 case EOF: 841 return (-2); 842 case '\\': 843 switch (c = inpc()) { 844 case '"': 845 if (tflag && d == '\'') 846 /* \" inside character constant undef. ... */ 847 warning(262); 848 return ('"'); 849 case '\'': 850 return ('\''); 851 case '?': 852 if (tflag) 853 /* \? undefined in traditional C */ 854 warning(263); 855 return ('?'); 856 case '\\': 857 return ('\\'); 858 case 'a': 859 if (tflag) 860 /* \a undefined in traditional C */ 861 warning(81); 862 return ('\a'); 863 case 'b': 864 return ('\b'); 865 case 'f': 866 return ('\f'); 867 case 'n': 868 return ('\n'); 869 case 'r': 870 return ('\r'); 871 case 't': 872 return ('\t'); 873 case 'v': 874 if (tflag) 875 /* \v undefined in traditional C */ 876 warning(264); 877 return ('\v'); 878 case '8': case '9': 879 /* bad octal digit %c */ 880 warning(77, c); 881 /* FALLTHROUGH */ 882 case '0': case '1': case '2': case '3': 883 case '4': case '5': case '6': case '7': 884 n = 3; 885 v = 0; 886 do { 887 v = (v << 3) + (c - '0'); 888 c = inpc(); 889 } while (--n && isdigit(c) && (tflag || c <= '7')); 890 if (tflag && n > 0 && isdigit(c)) 891 /* bad octal digit %c */ 892 warning(77, c); 893 pbc = c; 894 if (v > UCHAR_MAX) { 895 /* character escape does not fit in char. */ 896 warning(76); 897 v &= CHAR_MASK; 898 } 899 return (v); 900 case 'x': 901 if (tflag) 902 /* \x undefined in traditional C */ 903 warning(82); 904 v = 0; 905 n = 0; 906 while ((c = inpc()) >= 0 && isxdigit(c)) { 907 c = isdigit(c) ? 908 c - '0' : toupper(c) - 'A' + 10; 909 v = (v << 4) + c; 910 if (n >= 0) { 911 if ((v & ~CHAR_MASK) != 0) { 912 /* overflow in hex escape */ 913 warning(75); 914 n = -1; 915 } else { 916 n++; 917 } 918 } 919 } 920 pbc = c; 921 if (n == 0) { 922 /* no hex digits follow \x */ 923 error(74); 924 } if (n == -1) { 925 v &= CHAR_MASK; 926 } 927 return (v); 928 case '\n': 929 return (getescc(d)); 930 case EOF: 931 return (-2); 932 default: 933 if (isprint(c)) { 934 /* dubious escape \%c */ 935 warning(79, c); 936 } else { 937 /* dubious escape \%o */ 938 warning(80, c); 939 } 940 } 941 } 942 return (c); 943 } 944 945 /* 946 * Called for preprocessor directives. Currently implemented are: 947 * # lineno 948 * # lineno "filename" 949 */ 950 static void 951 directive(void) 952 { 953 const char *cp, *fn; 954 char c, *eptr; 955 size_t fnl; 956 long ln; 957 static int first = 1; 958 959 /* Go to first non-whitespace after # */ 960 for (cp = yytext + 1; (c = *cp) == ' ' || c == '\t'; cp++) 961 continue; 962 963 if (!isdigit((unsigned char)c)) { 964 error: 965 /* undefined or invalid # directive */ 966 warning(255); 967 return; 968 } 969 ln = strtol(--cp, &eptr, 10); 970 if (cp == eptr) 971 goto error; 972 if ((c = *(cp = eptr)) != ' ' && c != '\t' && c != '\0') 973 goto error; 974 while ((c = *cp++) == ' ' || c == '\t') 975 continue; 976 if (c != '\0') { 977 if (c != '"') 978 goto error; 979 fn = cp; 980 while ((c = *cp) != '"' && c != '\0') 981 cp++; 982 if (c != '"') 983 goto error; 984 if ((fnl = cp++ - fn) > PATH_MAX) 985 goto error; 986 while ((c = *cp++) == ' ' || c == '\t') 987 continue; 988 #if 0 989 if (c != '\0') 990 warning("extra character(s) after directive"); 991 #endif 992 993 /* empty string means stdin */ 994 if (fnl == 0) { 995 fn = "{standard input}"; 996 fnl = 16; /* strlen (fn) */ 997 } 998 curr_pos.p_file = fnnalloc(fn, fnl); 999 /* 1000 * If this is the first directive, the name is the name 1001 * of the C source file as specified at the command line. 1002 * It is written to the output file. 1003 */ 1004 if (first) { 1005 csrc_pos.p_file = curr_pos.p_file; 1006 outsrc(curr_pos.p_file); 1007 first = 0; 1008 } 1009 } 1010 curr_pos.p_line = (int)ln - 1; 1011 curr_pos.p_uniq = 0; 1012 if (curr_pos.p_file == csrc_pos.p_file) { 1013 csrc_pos.p_line = (int)ln - 1; 1014 csrc_pos.p_uniq = 0; 1015 } 1016 } 1017 1018 /* 1019 * Handle lint comments. Following comments are currently understood: 1020 * ARGSUSEDn 1021 * BITFIELDTYPE 1022 * CONSTCOND CONSTANTCOND CONSTANTCONDITION 1023 * FALLTHRU FALLTHROUGH 1024 * LINTLIBRARY 1025 * LINTED NOSTRICT 1026 * LONGLONG 1027 * NOTREACHED 1028 * PRINTFLIKEn 1029 * PROTOLIB 1030 * SCANFLIKEn 1031 * VARARGSn 1032 * If one of this comments is recognized, the arguments, if any, are 1033 * parsed and a function which handles this comment is called. 1034 */ 1035 static void 1036 comment(void) 1037 { 1038 int c, lc; 1039 static struct { 1040 const char *keywd; 1041 int arg; 1042 void (*func)(int); 1043 } keywtab[] = { 1044 { "ARGSUSED", 1, argsused }, 1045 { "BITFIELDTYPE", 0, bitfieldtype }, 1046 { "CONSTCOND", 0, constcond }, 1047 { "CONSTANTCOND", 0, constcond }, 1048 { "CONSTANTCONDITION", 0, constcond }, 1049 { "FALLTHRU", 0, fallthru }, 1050 { "FALLTHROUGH", 0, fallthru }, 1051 { "LINTLIBRARY", 0, lintlib }, 1052 { "LINTED", 0, linted }, 1053 { "LONGLONG", 0, longlong }, 1054 { "NOSTRICT", 0, linted }, 1055 { "NOTREACHED", 0, notreach }, 1056 { "PRINTFLIKE", 1, printflike }, 1057 { "PROTOLIB", 1, protolib }, 1058 { "SCANFLIKE", 1, scanflike }, 1059 { "VARARGS", 1, varargs }, 1060 }; 1061 char keywd[32]; 1062 char arg[32]; 1063 int l, i, a; 1064 int eoc; 1065 1066 eoc = 0; 1067 1068 /* Skip white spaces after the start of the comment */ 1069 while ((c = inpc()) != EOF && isspace(c)) 1070 continue; 1071 1072 /* Read the potential keyword to keywd */ 1073 l = 0; 1074 while (c != EOF && isupper(c) && l < sizeof (keywd) - 1) { 1075 keywd[l++] = (char)c; 1076 c = inpc(); 1077 } 1078 keywd[l] = '\0'; 1079 1080 /* look for the keyword */ 1081 for (i = 0; i < sizeof (keywtab) / sizeof (keywtab[0]); i++) { 1082 if (strcmp(keywtab[i].keywd, keywd) == 0) 1083 break; 1084 } 1085 if (i == sizeof (keywtab) / sizeof (keywtab[0])) 1086 goto skip_rest; 1087 1088 /* skip white spaces after the keyword */ 1089 while (c != EOF && isspace(c)) 1090 c = inpc(); 1091 1092 /* read the argument, if the keyword accepts one and there is one */ 1093 l = 0; 1094 if (keywtab[i].arg) { 1095 while (c != EOF && isdigit(c) && l < sizeof (arg) - 1) { 1096 arg[l++] = (char)c; 1097 c = inpc(); 1098 } 1099 } 1100 arg[l] = '\0'; 1101 a = l != 0 ? atoi(arg) : -1; 1102 1103 /* skip white spaces after the argument */ 1104 while (c != EOF && isspace(c)) 1105 c = inpc(); 1106 1107 if (c != '*' || (c = inpc()) != '/') { 1108 if (keywtab[i].func != linted) 1109 /* extra characters in lint comment */ 1110 warning(257); 1111 } else { 1112 /* 1113 * remember that we have already found the end of the 1114 * comment 1115 */ 1116 eoc = 1; 1117 } 1118 1119 if (keywtab[i].func != NULL) 1120 (*keywtab[i].func)(a); 1121 1122 skip_rest: 1123 while (!eoc) { 1124 lc = c; 1125 if ((c = inpc()) == EOF) { 1126 /* unterminated comment */ 1127 error(256); 1128 break; 1129 } 1130 if (lc == '*' && c == '/') 1131 eoc = 1; 1132 } 1133 } 1134 1135 /* 1136 * Handle // style comments 1137 */ 1138 static void 1139 slashslashcomment(void) 1140 { 1141 int c; 1142 1143 if (!Sflag && !gflag) 1144 /* // comments only supported in C99 */ 1145 (void)gnuism(312, tflag ? "traditional" : "ANSI"); 1146 1147 while ((c = inpc()) != EOF && c != '\n') 1148 continue; 1149 } 1150 1151 /* 1152 * Clear flags for lint comments LINTED, LONGLONG and CONSTCOND. 1153 * clrwflgs() is called after function definitions and global and 1154 * local declarations and definitions. It is also called between 1155 * the controlling expression and the body of control statements 1156 * (if, switch, for, while). 1157 */ 1158 void 1159 clrwflgs(void) 1160 { 1161 1162 nowarn = 0; 1163 quadflg = 0; 1164 ccflg = 0; 1165 } 1166 1167 /* 1168 * Strings are stored in a dynamically alloceted buffer and passed 1169 * in yylval.y_xstrg to the parser. The parser or the routines called 1170 * by the parser are responsible for freeing this buffer. 1171 */ 1172 static int 1173 string(void) 1174 { 1175 u_char *s; 1176 int c; 1177 size_t len, max; 1178 strg_t *strg; 1179 1180 s = xmalloc(max = 64); 1181 1182 len = 0; 1183 while ((c = getescc('"')) >= 0) { 1184 /* +1 to reserve space for a trailing NUL character */ 1185 if (len + 1 == max) 1186 s = xrealloc(s, max *= 2); 1187 s[len++] = (char)c; 1188 } 1189 s[len] = '\0'; 1190 if (c == -2) 1191 /* unterminated string constant */ 1192 error(258); 1193 1194 strg = xcalloc(1, sizeof (strg_t)); 1195 strg->st_tspec = CHAR; 1196 strg->st_len = len; 1197 strg->st_cp = s; 1198 1199 yylval.y_strg = strg; 1200 return (T_STRING); 1201 } 1202 1203 static int 1204 wcstrg(void) 1205 { 1206 char *s; 1207 int c, i, n, wi; 1208 size_t len, max, wlen; 1209 wchar_t *ws; 1210 strg_t *strg; 1211 1212 s = xmalloc(max = 64); 1213 len = 0; 1214 while ((c = getescc('"')) >= 0) { 1215 /* +1 to save space for a trailing NUL character */ 1216 if (len + 1 >= max) 1217 s = xrealloc(s, max *= 2); 1218 s[len++] = (char)c; 1219 } 1220 s[len] = '\0'; 1221 if (c == -2) 1222 /* unterminated string constant */ 1223 error(258); 1224 1225 /* get length of wide character string */ 1226 (void)mblen(NULL, 0); 1227 for (i = 0, wlen = 0; i < len; i += n, wlen++) { 1228 if ((n = mblen(&s[i], MB_CUR_MAX)) == -1) { 1229 /* invalid multibyte character */ 1230 error(291); 1231 break; 1232 } 1233 if (n == 0) 1234 n = 1; 1235 } 1236 1237 ws = xmalloc((wlen + 1) * sizeof (wchar_t)); 1238 1239 /* convert from multibyte to wide char */ 1240 (void)mbtowc(NULL, NULL, 0); 1241 for (i = 0, wi = 0; i < len; i += n, wi++) { 1242 if ((n = mbtowc(&ws[wi], &s[i], MB_CUR_MAX)) == -1) 1243 break; 1244 if (n == 0) 1245 n = 1; 1246 } 1247 ws[wi] = 0; 1248 free(s); 1249 1250 strg = xcalloc(1, sizeof (strg_t)); 1251 strg->st_tspec = WCHAR; 1252 strg->st_len = wlen; 1253 strg->st_wcp = ws; 1254 1255 yylval.y_strg = strg; 1256 return (T_STRING); 1257 } 1258 1259 /* 1260 * As noted above the scanner does not create new symbol table entries 1261 * for symbols it cannot find in the symbol table. This is to avoid 1262 * putting undeclared symbols into the symbol table if a syntax error 1263 * occurs. 1264 * 1265 * getsym() is called as soon as it is probably ok to put the symbol to 1266 * the symbol table. This does not mean that it is not possible that 1267 * symbols are put to the symbol table which are than not completely 1268 * declared due to syntax errors. To avoid too many problems in this 1269 * case symbols get type int in getsym(). 1270 * 1271 * XXX calls to getsym() should be delayed until decl1*() is called 1272 */ 1273 sym_t * 1274 getsym(sbuf_t *sb) 1275 { 1276 dinfo_t *di; 1277 char *s; 1278 sym_t *sym; 1279 1280 sym = sb->sb_sym; 1281 1282 /* 1283 * During member declaration it is possible that name() looked 1284 * for symbols of type FVFT, although it should have looked for 1285 * symbols of type FTAG. Same can happen for labels. Both cases 1286 * are compensated here. 1287 */ 1288 if (symtyp == FMOS || symtyp == FLAB) { 1289 if (sym == NULL || sym->s_kind == FVFT) 1290 sym = search(sb); 1291 } 1292 1293 if (sym != NULL) { 1294 if (sym->s_kind != symtyp) 1295 LERROR("storesym()"); 1296 symtyp = FVFT; 1297 freesb(sb); 1298 return (sym); 1299 } 1300 1301 /* create a new symbol table entry */ 1302 1303 /* labels must always be allocated at level 1 (outhermost block) */ 1304 if (symtyp == FLAB) { 1305 sym = getlblk(1, sizeof (sym_t)); 1306 s = getlblk(1, sb->sb_len + 1); 1307 (void)memcpy(s, sb->sb_name, sb->sb_len + 1); 1308 sym->s_name = s; 1309 sym->s_blklev = 1; 1310 di = dcs; 1311 while (di->d_nxt != NULL && di->d_nxt->d_nxt != NULL) 1312 di = di->d_nxt; 1313 if (di->d_ctx != AUTO) 1314 LERROR("storesym()"); 1315 } else { 1316 sym = getblk(sizeof (sym_t)); 1317 sym->s_name = sb->sb_name; 1318 sym->s_blklev = blklev; 1319 di = dcs; 1320 } 1321 1322 UNIQUE_CURR_POS(sym->s_dpos); 1323 if ((sym->s_kind = symtyp) != FLAB) 1324 sym->s_type = gettyp(INT); 1325 1326 symtyp = FVFT; 1327 1328 if ((sym->s_link = symtab[sb->sb_hash]) != NULL) 1329 symtab[sb->sb_hash]->s_rlink = &sym->s_link; 1330 (symtab[sb->sb_hash] = sym)->s_rlink = &symtab[sb->sb_hash]; 1331 1332 *di->d_ldlsym = sym; 1333 di->d_ldlsym = &sym->s_dlnxt; 1334 1335 freesb(sb); 1336 return (sym); 1337 } 1338 1339 /* 1340 * Construct a temporary symbol. The symbol starts with a digit, so that 1341 * it is illegal. 1342 */ 1343 sym_t * 1344 mktempsym(type_t *t) 1345 { 1346 static int n = 0; 1347 int h; 1348 char *s = getlblk(blklev, 64); 1349 sym_t *sym = getblk(sizeof (sym_t)); 1350 1351 (void)snprintf(s, 64, "%.8d_tmp", n++); 1352 h = hash(s); 1353 1354 sym->s_name = s; 1355 sym->s_type = t; 1356 sym->s_blklev = blklev; 1357 sym->s_scl = AUTO; 1358 sym->s_kind = FVFT; 1359 sym->s_used = 1; 1360 sym->s_set = 1; 1361 1362 if ((sym->s_link = symtab[h]) != NULL) 1363 symtab[h]->s_rlink = &sym->s_link; 1364 (symtab[h] = sym)->s_rlink = &symtab[h]; 1365 1366 *dcs->d_ldlsym = sym; 1367 dcs->d_ldlsym = &sym->s_dlnxt; 1368 1369 return sym; 1370 } 1371 1372 /* 1373 * Remove a symbol forever from the symbol table. s_blklev 1374 * is set to -1 to avoid that the symbol will later be put 1375 * back to the symbol table. 1376 */ 1377 void 1378 rmsym(sym_t *sym) 1379 { 1380 1381 if ((*sym->s_rlink = sym->s_link) != NULL) 1382 sym->s_link->s_rlink = sym->s_rlink; 1383 sym->s_blklev = -1; 1384 sym->s_link = NULL; 1385 } 1386 1387 /* 1388 * Remove a list of symbols declared at one level from the symbol 1389 * table. 1390 */ 1391 void 1392 rmsyms(sym_t *syms) 1393 { 1394 sym_t *sym; 1395 1396 for (sym = syms; sym != NULL; sym = sym->s_dlnxt) { 1397 if (sym->s_blklev != -1) { 1398 if ((*sym->s_rlink = sym->s_link) != NULL) 1399 sym->s_link->s_rlink = sym->s_rlink; 1400 sym->s_link = NULL; 1401 sym->s_rlink = NULL; 1402 } 1403 } 1404 } 1405 1406 /* 1407 * Put a symbol into the symbol table 1408 */ 1409 void 1410 inssym(int bl, sym_t *sym) 1411 { 1412 int h; 1413 1414 h = hash(sym->s_name); 1415 if ((sym->s_link = symtab[h]) != NULL) 1416 symtab[h]->s_rlink = &sym->s_link; 1417 (symtab[h] = sym)->s_rlink = &symtab[h]; 1418 sym->s_blklev = bl; 1419 if (sym->s_link != NULL && sym->s_blklev < sym->s_link->s_blklev) 1420 LERROR("inssym()"); 1421 } 1422 1423 /* 1424 * Called at level 0 after syntax errors 1425 * Removes all symbols which are not declared at level 0 from the 1426 * symbol table. Also frees all memory which is not associated with 1427 * level 0. 1428 */ 1429 void 1430 cleanup(void) 1431 { 1432 sym_t *sym, *nsym; 1433 int i; 1434 1435 for (i = 0; i < HSHSIZ1; i++) { 1436 for (sym = symtab[i]; sym != NULL; sym = nsym) { 1437 nsym = sym->s_link; 1438 if (sym->s_blklev >= 1) { 1439 if ((*sym->s_rlink = nsym) != NULL) 1440 nsym->s_rlink = sym->s_rlink; 1441 } 1442 } 1443 } 1444 1445 for (i = mblklev; i > 0; i--) 1446 freelblk(i); 1447 } 1448 1449 /* 1450 * Create a new symbol with the name of an existing symbol. 1451 */ 1452 sym_t * 1453 pushdown(sym_t *sym) 1454 { 1455 int h; 1456 sym_t *nsym; 1457 1458 h = hash(sym->s_name); 1459 nsym = getblk(sizeof (sym_t)); 1460 if (sym->s_blklev > blklev) 1461 LERROR("pushdown()"); 1462 nsym->s_name = sym->s_name; 1463 UNIQUE_CURR_POS(nsym->s_dpos); 1464 nsym->s_kind = sym->s_kind; 1465 nsym->s_blklev = blklev; 1466 1467 if ((nsym->s_link = symtab[h]) != NULL) 1468 symtab[h]->s_rlink = &nsym->s_link; 1469 (symtab[h] = nsym)->s_rlink = &symtab[h]; 1470 1471 *dcs->d_ldlsym = nsym; 1472 dcs->d_ldlsym = &nsym->s_dlnxt; 1473 1474 return (nsym); 1475 } 1476 1477 /* 1478 * Free any dynamically allocated memory referenced by 1479 * the value stack or yylval. 1480 * The type of information in yylval is described by tok. 1481 */ 1482 void 1483 freeyyv(void *sp, int tok) 1484 { 1485 if (tok == T_NAME || tok == T_TYPENAME) { 1486 sbuf_t *sb = *(sbuf_t **)sp; 1487 freesb(sb); 1488 } else if (tok == T_CON) { 1489 val_t *val = *(val_t **)sp; 1490 free(val); 1491 } else if (tok == T_STRING) { 1492 strg_t *strg = *(strg_t **)sp; 1493 if (strg->st_tspec == CHAR) { 1494 free(strg->st_cp); 1495 } else if (strg->st_tspec == WCHAR) { 1496 free(strg->st_wcp); 1497 } else { 1498 LERROR("fryylv()"); 1499 } 1500 free(strg); 1501 } 1502 } 1503
Indexes created Wed Oct 01 15:09:59 GMT 2025