scan.l revision 1.33
1 %{ 2 /* $NetBSD: scan.l,v 1.33 2004/09/12 08:58:52 yamt 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 1.33 2004/09/12 08:58:52 yamt 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 u_long ul = 0; 462 uint64_t uq = 0; 463 int ansiu; 464 static tspec_t contypes[2][3] = { 465 { INT, LONG, QUAD }, 466 { UINT, ULONG, UQUAD } 467 }; 468 469 cp = yytext; 470 len = yyleng; 471 472 /* skip 0x */ 473 if (base == 16) { 474 cp += 2; 475 len -= 2; 476 } 477 478 /* read suffixes */ 479 l_suffix = u_suffix = 0; 480 for ( ; ; ) { 481 if ((c = cp[len - 1]) == 'l' || c == 'L') { 482 l_suffix++; 483 } else if (c == 'u' || c == 'U') { 484 u_suffix++; 485 } else { 486 break; 487 } 488 len--; 489 } 490 if (l_suffix > 2 || u_suffix > 1) { 491 /* malformed integer constant */ 492 warning(251); 493 if (l_suffix > 2) 494 l_suffix = 2; 495 if (u_suffix > 1) 496 u_suffix = 1; 497 } 498 if (tflag && u_suffix != 0) { 499 /* suffix U is illegal in traditional C */ 500 warning(97); 501 } 502 typ = contypes[u_suffix][l_suffix]; 503 504 errno = 0; 505 if (l_suffix < 2) { 506 ul = strtoul(cp, &eptr, base); 507 } else { 508 uq = strtouq(cp, &eptr, base); 509 } 510 if (eptr != cp + len) 511 LERROR("icon()"); 512 if (errno != 0) 513 /* integer constant out of range */ 514 warning(252); 515 516 /* 517 * If the value is to big for the current type, we must choose 518 * another type. 519 */ 520 ansiu = 0; 521 switch (typ) { 522 case INT: 523 if (ul <= INT_MAX) { 524 /* ok */ 525 } else if (ul <= (unsigned)UINT_MAX && base != 10) { 526 typ = UINT; 527 } else if (ul <= LONG_MAX) { 528 typ = LONG; 529 } else { 530 typ = ULONG; 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 (ul > (u_int)UINT_MAX) 546 typ = ULONG; 547 break; 548 case LONG: 549 if (ul > LONG_MAX && !tflag) { 550 typ = ULONG; 551 if (!sflag) 552 ansiu = 1; 553 } 554 break; 555 case QUAD: 556 if (uq > QUAD_MAX && !tflag) { 557 typ = UQUAD; 558 if (!sflag) 559 ansiu = 1; 560 } 561 break; 562 /* LINTED (enumeration values not handled in switch) */ 563 case STRUCT: 564 case VOID: 565 case LDOUBLE: 566 case FUNC: 567 case ARRAY: 568 case PTR: 569 case ENUM: 570 case UNION: 571 case SIGNED: 572 case NOTSPEC: 573 case DOUBLE: 574 case FLOAT: 575 case UQUAD: 576 case ULONG: 577 case USHORT: 578 case SHORT: 579 case UCHAR: 580 case SCHAR: 581 case CHAR: 582 case BOOL: 583 case UNSIGN: 584 break; 585 586 case NTSPEC: /* this value unused */ 587 break; 588 } 589 590 if (typ != QUAD && typ != UQUAD) { 591 if (isutyp(typ)) { 592 uq = ul; 593 } else { 594 uq = (int64_t)(long)ul; 595 } 596 } 597 598 uq = (uint64_t)xsign((int64_t)uq, typ, -1); 599 600 (yylval.y_val = xcalloc(1, sizeof (val_t)))->v_tspec = typ; 601 yylval.y_val->v_ansiu = ansiu; 602 yylval.y_val->v_quad = (int64_t)uq; 603 604 return (T_CON); 605 } 606 607 /* 608 * Returns 1 if t is a signed type and the value is negative. 609 * 610 * len is the number of significant bits. If len is -1, len is set 611 * to the width of type t. 612 */ 613 int 614 sign(int64_t q, tspec_t t, int len) 615 { 616 617 if (t == PTR || isutyp(t)) 618 return (0); 619 return (msb(q, t, len)); 620 } 621 622 int 623 msb(int64_t q, tspec_t t, int len) 624 { 625 626 if (len <= 0) 627 len = size(t); 628 return ((q & qbmasks[len - 1]) != 0); 629 } 630 631 /* 632 * Extends the sign of q. 633 */ 634 int64_t 635 xsign(int64_t q, tspec_t t, int len) 636 { 637 638 if (len <= 0) 639 len = size(t); 640 641 if (t == PTR || isutyp(t) || !sign(q, t, len)) { 642 q &= qlmasks[len]; 643 } else { 644 q |= qumasks[len]; 645 } 646 return (q); 647 } 648 649 /* 650 * Convert a string representing a floating point value into its interal 651 * representation. Type and value are returned in yylval. fcon() 652 * (and yylex()) returns T_CON. 653 * XXX Currently it is not possible to convert constants of type 654 * long double which are greater than DBL_MAX. 655 */ 656 static int 657 fcon(void) 658 { 659 const char *cp; 660 int len; 661 tspec_t typ; 662 char c, *eptr; 663 double d; 664 float f = 0; 665 666 cp = yytext; 667 len = yyleng; 668 669 if ((c = cp[len - 1]) == 'f' || c == 'F') { 670 typ = FLOAT; 671 len--; 672 } else if (c == 'l' || c == 'L') { 673 typ = LDOUBLE; 674 len--; 675 } else { 676 typ = DOUBLE; 677 } 678 679 if (tflag && typ != DOUBLE) { 680 /* suffixes F and L are illegal in traditional C */ 681 warning(98); 682 } 683 684 errno = 0; 685 d = strtod(cp, &eptr); 686 if (eptr != cp + len) 687 LERROR("fcon()"); 688 if (errno != 0) 689 /* floating-point constant out of range */ 690 warning(248); 691 692 if (typ == FLOAT) { 693 f = (float)d; 694 if (!finite(f)) { 695 /* floating-point constant out of range */ 696 warning(248); 697 f = f > 0 ? FLT_MAX : -FLT_MAX; 698 } 699 } 700 701 (yylval.y_val = xcalloc(1, sizeof (val_t)))->v_tspec = typ; 702 if (typ == FLOAT) { 703 yylval.y_val->v_ldbl = f; 704 } else { 705 yylval.y_val->v_ldbl = d; 706 } 707 708 return (T_CON); 709 } 710 711 static int 712 operator(int t, op_t o) 713 { 714 715 yylval.y_op = o; 716 return (t); 717 } 718 719 /* 720 * Called if lex found a leading \'. 721 */ 722 static int 723 ccon(void) 724 { 725 int n, val, c; 726 char cv; 727 728 n = 0; 729 val = 0; 730 while ((c = getescc('\'')) >= 0) { 731 val = (val << CHAR_BIT) + c; 732 n++; 733 } 734 if (c == -2) { 735 /* unterminated character constant */ 736 error(253); 737 } else { 738 if (n > sizeof (int) || (n > 1 && (pflag || hflag))) { 739 /* too many characters in character constant */ 740 error(71); 741 } else if (n > 1) { 742 /* multi-character character constant */ 743 warning(294); 744 } else if (n == 0) { 745 /* empty character constant */ 746 error(73); 747 } 748 } 749 if (n == 1) { 750 cv = (char)val; 751 val = cv; 752 } 753 754 yylval.y_val = xcalloc(1, sizeof (val_t)); 755 yylval.y_val->v_tspec = INT; 756 yylval.y_val->v_quad = val; 757 758 return (T_CON); 759 } 760 761 /* 762 * Called if lex found a leading L\' 763 */ 764 static int 765 wccon(void) 766 { 767 static char buf[MB_LEN_MAX + 1]; 768 int i, c; 769 wchar_t wc; 770 771 i = 0; 772 while ((c = getescc('\'')) >= 0) { 773 if (i < MB_CUR_MAX) 774 buf[i] = (char)c; 775 i++; 776 } 777 778 wc = 0; 779 780 if (c == -2) { 781 /* unterminated character constant */ 782 error(253); 783 } else if (c == 0) { 784 /* empty character constant */ 785 error(73); 786 } else { 787 if (i > MB_CUR_MAX) { 788 i = MB_CUR_MAX; 789 /* too many characters in character constant */ 790 error(71); 791 } else { 792 buf[i] = '\0'; 793 (void)mbtowc(NULL, NULL, 0); 794 if (mbtowc(&wc, buf, MB_CUR_MAX) < 0) 795 /* invalid multibyte character */ 796 error(291); 797 } 798 } 799 800 yylval.y_val = xcalloc(1, sizeof (val_t)); 801 yylval.y_val->v_tspec = WCHAR; 802 yylval.y_val->v_quad = wc; 803 804 return (T_CON); 805 } 806 807 /* 808 * Read a character which is part of a character constant or of a string 809 * and handle escapes. 810 * 811 * The Argument is the character which delimits the character constant or 812 * string. 813 * 814 * Returns -1 if the end of the character constant or string is reached, 815 * -2 if the EOF is reached, and the character otherwise. 816 */ 817 static int 818 getescc(int d) 819 { 820 static int pbc = -1; 821 int n, c, v; 822 823 if (pbc == -1) { 824 c = inpc(); 825 } else { 826 c = pbc; 827 pbc = -1; 828 } 829 if (c == d) 830 return (-1); 831 switch (c) { 832 case '\n': 833 if (tflag) { 834 /* newline in string or char constant */ 835 error(254); 836 return (-2); 837 } 838 return (c); 839 case EOF: 840 return (-2); 841 case '\\': 842 switch (c = inpc()) { 843 case '"': 844 if (tflag && d == '\'') 845 /* \" inside character constant undef. ... */ 846 warning(262); 847 return ('"'); 848 case '\'': 849 return ('\''); 850 case '?': 851 if (tflag) 852 /* \? undefined in traditional C */ 853 warning(263); 854 return ('?'); 855 case '\\': 856 return ('\\'); 857 case 'a': 858 if (tflag) 859 /* \a undefined in traditional C */ 860 warning(81); 861 return ('\a'); 862 case 'b': 863 return ('\b'); 864 case 'f': 865 return ('\f'); 866 case 'n': 867 return ('\n'); 868 case 'r': 869 return ('\r'); 870 case 't': 871 return ('\t'); 872 case 'v': 873 if (tflag) 874 /* \v undefined in traditional C */ 875 warning(264); 876 return ('\v'); 877 case '8': case '9': 878 /* bad octal digit %c */ 879 warning(77, c); 880 /* FALLTHROUGH */ 881 case '0': case '1': case '2': case '3': 882 case '4': case '5': case '6': case '7': 883 n = 3; 884 v = 0; 885 do { 886 v = (v << 3) + (c - '0'); 887 c = inpc(); 888 } while (--n && isdigit(c) && (tflag || c <= '7')); 889 if (tflag && n > 0 && isdigit(c)) 890 /* bad octal digit %c */ 891 warning(77, c); 892 pbc = c; 893 if (v > UCHAR_MAX) { 894 /* character escape does not fit in char. */ 895 warning(76); 896 v &= CHAR_MASK; 897 } 898 return (v); 899 case 'x': 900 if (tflag) 901 /* \x undefined in traditional C */ 902 warning(82); 903 v = 0; 904 n = 0; 905 while ((c = inpc()) >= 0 && isxdigit(c)) { 906 c = isdigit(c) ? 907 c - '0' : toupper(c) - 'A' + 10; 908 v = (v << 4) + c; 909 if (n >= 0) { 910 if ((v & ~CHAR_MASK) != 0) { 911 /* overflow in hex escape */ 912 warning(75); 913 n = -1; 914 } else { 915 n++; 916 } 917 } 918 } 919 pbc = c; 920 if (n == 0) { 921 /* no hex digits follow \x */ 922 error(74); 923 } if (n == -1) { 924 v &= CHAR_MASK; 925 } 926 return (v); 927 case '\n': 928 return (getescc(d)); 929 case EOF: 930 return (-2); 931 default: 932 if (isprint(c)) { 933 /* dubious escape \%c */ 934 warning(79, c); 935 } else { 936 /* dubious escape \%o */ 937 warning(80, c); 938 } 939 } 940 } 941 return (c); 942 } 943 944 /* 945 * Called for preprocessor directives. Currently implemented are: 946 * # lineno 947 * # lineno "filename" 948 */ 949 static void 950 directive(void) 951 { 952 const char *cp, *fn; 953 char c, *eptr; 954 size_t fnl; 955 long ln; 956 static int first = 1; 957 958 /* Go to first non-whitespace after # */ 959 for (cp = yytext + 1; (c = *cp) == ' ' || c == '\t'; cp++) 960 continue; 961 962 if (!isdigit((unsigned char)c)) { 963 error: 964 /* undefined or invalid # directive */ 965 warning(255); 966 return; 967 } 968 ln = strtol(--cp, &eptr, 10); 969 if (cp == eptr) 970 goto error; 971 if ((c = *(cp = eptr)) != ' ' && c != '\t' && c != '\0') 972 goto error; 973 while ((c = *cp++) == ' ' || c == '\t') 974 continue; 975 if (c != '\0') { 976 if (c != '"') 977 goto error; 978 fn = cp; 979 while ((c = *cp) != '"' && c != '\0') 980 cp++; 981 if (c != '"') 982 goto error; 983 if ((fnl = cp++ - fn) > PATH_MAX) 984 goto error; 985 while ((c = *cp++) == ' ' || c == '\t') 986 continue; 987 #if 0 988 if (c != '\0') 989 warning("extra character(s) after directive"); 990 #endif 991 992 /* empty string means stdin */ 993 if (fnl == 0) { 994 fn = "{standard input}"; 995 fnl = 16; /* strlen (fn) */ 996 } 997 curr_pos.p_file = fnnalloc(fn, fnl); 998 /* 999 * If this is the first directive, the name is the name 1000 * of the C source file as specified at the command line. 1001 * It is written to the output file. 1002 */ 1003 if (first) { 1004 csrc_pos.p_file = curr_pos.p_file; 1005 outsrc(curr_pos.p_file); 1006 first = 0; 1007 } 1008 } 1009 curr_pos.p_line = (int)ln - 1; 1010 curr_pos.p_uniq = 0; 1011 if (curr_pos.p_file == csrc_pos.p_file) { 1012 csrc_pos.p_line = (int)ln - 1; 1013 csrc_pos.p_uniq = 0; 1014 } 1015 } 1016 1017 /* 1018 * Handle lint comments. Following comments are currently understood: 1019 * ARGSUSEDn 1020 * BITFIELDTYPE 1021 * CONSTCOND CONSTANTCOND CONSTANTCONDITION 1022 * FALLTHRU FALLTHROUGH 1023 * LINTLIBRARY 1024 * LINTED NOSTRICT 1025 * LONGLONG 1026 * NOTREACHED 1027 * PRINTFLIKEn 1028 * PROTOLIB 1029 * SCANFLIKEn 1030 * VARARGSn 1031 * If one of this comments is recognized, the arguments, if any, are 1032 * parsed and a function which handles this comment is called. 1033 */ 1034 static void 1035 comment(void) 1036 { 1037 int c, lc; 1038 static struct { 1039 const char *keywd; 1040 int arg; 1041 void (*func)(int); 1042 } keywtab[] = { 1043 { "ARGSUSED", 1, argsused }, 1044 { "BITFIELDTYPE", 0, bitfieldtype }, 1045 { "CONSTCOND", 0, constcond }, 1046 { "CONSTANTCOND", 0, constcond }, 1047 { "CONSTANTCONDITION", 0, constcond }, 1048 { "FALLTHRU", 0, fallthru }, 1049 { "FALLTHROUGH", 0, fallthru }, 1050 { "LINTLIBRARY", 0, lintlib }, 1051 { "LINTED", 0, linted }, 1052 { "LONGLONG", 0, longlong }, 1053 { "NOSTRICT", 0, linted }, 1054 { "NOTREACHED", 0, notreach }, 1055 { "PRINTFLIKE", 1, printflike }, 1056 { "PROTOLIB", 1, protolib }, 1057 { "SCANFLIKE", 1, scanflike }, 1058 { "VARARGS", 1, varargs }, 1059 }; 1060 char keywd[32]; 1061 char arg[32]; 1062 int l, i, a; 1063 int eoc; 1064 1065 eoc = 0; 1066 1067 /* Skip white spaces after the start of the comment */ 1068 while ((c = inpc()) != EOF && isspace(c)) 1069 continue; 1070 1071 /* Read the potential keyword to keywd */ 1072 l = 0; 1073 while (c != EOF && isupper(c) && l < sizeof (keywd) - 1) { 1074 keywd[l++] = (char)c; 1075 c = inpc(); 1076 } 1077 keywd[l] = '\0'; 1078 1079 /* look for the keyword */ 1080 for (i = 0; i < sizeof (keywtab) / sizeof (keywtab[0]); i++) { 1081 if (strcmp(keywtab[i].keywd, keywd) == 0) 1082 break; 1083 } 1084 if (i == sizeof (keywtab) / sizeof (keywtab[0])) 1085 goto skip_rest; 1086 1087 /* skip white spaces after the keyword */ 1088 while (c != EOF && isspace(c)) 1089 c = inpc(); 1090 1091 /* read the argument, if the keyword accepts one and there is one */ 1092 l = 0; 1093 if (keywtab[i].arg) { 1094 while (c != EOF && isdigit(c) && l < sizeof (arg) - 1) { 1095 arg[l++] = (char)c; 1096 c = inpc(); 1097 } 1098 } 1099 arg[l] = '\0'; 1100 a = l != 0 ? atoi(arg) : -1; 1101 1102 /* skip white spaces after the argument */ 1103 while (c != EOF && isspace(c)) 1104 c = inpc(); 1105 1106 if (c != '*' || (c = inpc()) != '/') { 1107 if (keywtab[i].func != linted) 1108 /* extra characters in lint comment */ 1109 warning(257); 1110 } else { 1111 /* 1112 * remember that we have already found the end of the 1113 * comment 1114 */ 1115 eoc = 1; 1116 } 1117 1118 if (keywtab[i].func != NULL) 1119 (*keywtab[i].func)(a); 1120 1121 skip_rest: 1122 while (!eoc) { 1123 lc = c; 1124 if ((c = inpc()) == EOF) { 1125 /* unterminated comment */ 1126 error(256); 1127 break; 1128 } 1129 if (lc == '*' && c == '/') 1130 eoc = 1; 1131 } 1132 } 1133 1134 /* 1135 * Handle // style comments 1136 */ 1137 static void 1138 slashslashcomment(void) 1139 { 1140 int c; 1141 1142 if (!Sflag && !gflag) 1143 /* // comments only supported in C99 */ 1144 (void)gnuism(312, tflag ? "traditional" : "ANSI"); 1145 1146 while ((c = inpc()) != EOF && c != '\n') 1147 continue; 1148 } 1149 1150 /* 1151 * Clear flags for lint comments LINTED, LONGLONG and CONSTCOND. 1152 * clrwflgs() is called after function definitions and global and 1153 * local declarations and definitions. It is also called between 1154 * the controlling expression and the body of control statements 1155 * (if, switch, for, while). 1156 */ 1157 void 1158 clrwflgs(void) 1159 { 1160 1161 nowarn = 0; 1162 quadflg = 0; 1163 ccflg = 0; 1164 } 1165 1166 /* 1167 * Strings are stored in a dynamically alloceted buffer and passed 1168 * in yylval.y_xstrg to the parser. The parser or the routines called 1169 * by the parser are responsible for freeing this buffer. 1170 */ 1171 static int 1172 string(void) 1173 { 1174 u_char *s; 1175 int c; 1176 size_t len, max; 1177 strg_t *strg; 1178 1179 s = xmalloc(max = 64); 1180 1181 len = 0; 1182 while ((c = getescc('"')) >= 0) { 1183 /* +1 to reserve space for a trailing NUL character */ 1184 if (len + 1 == max) 1185 s = xrealloc(s, max *= 2); 1186 s[len++] = (char)c; 1187 } 1188 s[len] = '\0'; 1189 if (c == -2) 1190 /* unterminated string constant */ 1191 error(258); 1192 1193 strg = xcalloc(1, sizeof (strg_t)); 1194 strg->st_tspec = CHAR; 1195 strg->st_len = len; 1196 strg->st_cp = s; 1197 1198 yylval.y_strg = strg; 1199 return (T_STRING); 1200 } 1201 1202 static int 1203 wcstrg(void) 1204 { 1205 char *s; 1206 int c, i, n, wi; 1207 size_t len, max, wlen; 1208 wchar_t *ws; 1209 strg_t *strg; 1210 1211 s = xmalloc(max = 64); 1212 len = 0; 1213 while ((c = getescc('"')) >= 0) { 1214 /* +1 to save space for a trailing NUL character */ 1215 if (len + 1 >= max) 1216 s = xrealloc(s, max *= 2); 1217 s[len++] = (char)c; 1218 } 1219 s[len] = '\0'; 1220 if (c == -2) 1221 /* unterminated string constant */ 1222 error(258); 1223 1224 /* get length of wide character string */ 1225 (void)mblen(NULL, 0); 1226 for (i = 0, wlen = 0; i < len; i += n, wlen++) { 1227 if ((n = mblen(&s[i], MB_CUR_MAX)) == -1) { 1228 /* invalid multibyte character */ 1229 error(291); 1230 break; 1231 } 1232 if (n == 0) 1233 n = 1; 1234 } 1235 1236 ws = xmalloc((wlen + 1) * sizeof (wchar_t)); 1237 1238 /* convert from multibyte to wide char */ 1239 (void)mbtowc(NULL, NULL, 0); 1240 for (i = 0, wi = 0; i < len; i += n, wi++) { 1241 if ((n = mbtowc(&ws[wi], &s[i], MB_CUR_MAX)) == -1) 1242 break; 1243 if (n == 0) 1244 n = 1; 1245 } 1246 ws[wi] = 0; 1247 free(s); 1248 1249 strg = xcalloc(1, sizeof (strg_t)); 1250 strg->st_tspec = WCHAR; 1251 strg->st_len = wlen; 1252 strg->st_wcp = ws; 1253 1254 yylval.y_strg = strg; 1255 return (T_STRING); 1256 } 1257 1258 /* 1259 * As noted above the scanner does not create new symbol table entries 1260 * for symbols it cannot find in the symbol table. This is to avoid 1261 * putting undeclared symbols into the symbol table if a syntax error 1262 * occurs. 1263 * 1264 * getsym() is called as soon as it is probably ok to put the symbol to 1265 * the symbol table. This does not mean that it is not possible that 1266 * symbols are put to the symbol table which are than not completely 1267 * declared due to syntax errors. To avoid too many problems in this 1268 * case symbols get type int in getsym(). 1269 * 1270 * XXX calls to getsym() should be delayed until decl1*() is called 1271 */ 1272 sym_t * 1273 getsym(sbuf_t *sb) 1274 { 1275 dinfo_t *di; 1276 char *s; 1277 sym_t *sym; 1278 1279 sym = sb->sb_sym; 1280 1281 /* 1282 * During member declaration it is possible that name() looked 1283 * for symbols of type FVFT, although it should have looked for 1284 * symbols of type FTAG. Same can happen for labels. Both cases 1285 * are compensated here. 1286 */ 1287 if (symtyp == FMOS || symtyp == FLAB) { 1288 if (sym == NULL || sym->s_kind == FVFT) 1289 sym = search(sb); 1290 } 1291 1292 if (sym != NULL) { 1293 if (sym->s_kind != symtyp) 1294 LERROR("storesym()"); 1295 symtyp = FVFT; 1296 freesb(sb); 1297 return (sym); 1298 } 1299 1300 /* create a new symbol table entry */ 1301 1302 /* labels must always be allocated at level 1 (outhermost block) */ 1303 if (symtyp == FLAB) { 1304 sym = getlblk(1, sizeof (sym_t)); 1305 s = getlblk(1, sb->sb_len + 1); 1306 (void)memcpy(s, sb->sb_name, sb->sb_len + 1); 1307 sym->s_name = s; 1308 sym->s_blklev = 1; 1309 di = dcs; 1310 while (di->d_nxt != NULL && di->d_nxt->d_nxt != NULL) 1311 di = di->d_nxt; 1312 if (di->d_ctx != AUTO) 1313 LERROR("storesym()"); 1314 } else { 1315 sym = getblk(sizeof (sym_t)); 1316 sym->s_name = sb->sb_name; 1317 sym->s_blklev = blklev; 1318 di = dcs; 1319 } 1320 1321 UNIQUE_CURR_POS(sym->s_dpos); 1322 if ((sym->s_kind = symtyp) != FLAB) 1323 sym->s_type = gettyp(INT); 1324 1325 symtyp = FVFT; 1326 1327 if ((sym->s_link = symtab[sb->sb_hash]) != NULL) 1328 symtab[sb->sb_hash]->s_rlink = &sym->s_link; 1329 (symtab[sb->sb_hash] = sym)->s_rlink = &symtab[sb->sb_hash]; 1330 1331 *di->d_ldlsym = sym; 1332 di->d_ldlsym = &sym->s_dlnxt; 1333 1334 freesb(sb); 1335 return (sym); 1336 } 1337 1338 /* 1339 * Construct a temporary symbol. The symbol starts with a digit, so that 1340 * it is illegal. 1341 */ 1342 sym_t * 1343 mktempsym(type_t *t) 1344 { 1345 static int n = 0; 1346 int h; 1347 char *s = getlblk(blklev, 64); 1348 sym_t *sym = getblk(sizeof (sym_t)); 1349 1350 (void)snprintf(s, 64, "%.8d_tmp", n++); 1351 h = hash(s); 1352 1353 sym->s_name = s; 1354 sym->s_type = t; 1355 sym->s_blklev = blklev; 1356 sym->s_scl = AUTO; 1357 sym->s_kind = FVFT; 1358 sym->s_used = 1; 1359 sym->s_set = 1; 1360 1361 if ((sym->s_link = symtab[h]) != NULL) 1362 symtab[h]->s_rlink = &sym->s_link; 1363 (symtab[h] = sym)->s_rlink = &symtab[h]; 1364 1365 *dcs->d_ldlsym = sym; 1366 dcs->d_ldlsym = &sym->s_dlnxt; 1367 1368 return sym; 1369 } 1370 1371 /* 1372 * Remove a symbol forever from the symbol table. s_blklev 1373 * is set to -1 to avoid that the symbol will later be put 1374 * back to the symbol table. 1375 */ 1376 void 1377 rmsym(sym_t *sym) 1378 { 1379 1380 if ((*sym->s_rlink = sym->s_link) != NULL) 1381 sym->s_link->s_rlink = sym->s_rlink; 1382 sym->s_blklev = -1; 1383 sym->s_link = NULL; 1384 } 1385 1386 /* 1387 * Remove a list of symbols declared at one level from the symbol 1388 * table. 1389 */ 1390 void 1391 rmsyms(sym_t *syms) 1392 { 1393 sym_t *sym; 1394 1395 for (sym = syms; sym != NULL; sym = sym->s_dlnxt) { 1396 if (sym->s_blklev != -1) { 1397 if ((*sym->s_rlink = sym->s_link) != NULL) 1398 sym->s_link->s_rlink = sym->s_rlink; 1399 sym->s_link = NULL; 1400 sym->s_rlink = NULL; 1401 } 1402 } 1403 } 1404 1405 /* 1406 * Put a symbol into the symbol table 1407 */ 1408 void 1409 inssym(int bl, sym_t *sym) 1410 { 1411 int h; 1412 1413 h = hash(sym->s_name); 1414 if ((sym->s_link = symtab[h]) != NULL) 1415 symtab[h]->s_rlink = &sym->s_link; 1416 (symtab[h] = sym)->s_rlink = &symtab[h]; 1417 sym->s_blklev = bl; 1418 if (sym->s_link != NULL && sym->s_blklev < sym->s_link->s_blklev) 1419 LERROR("inssym()"); 1420 } 1421 1422 /* 1423 * Called at level 0 after syntax errors 1424 * Removes all symbols which are not declared at level 0 from the 1425 * symbol table. Also frees all memory which is not associated with 1426 * level 0. 1427 */ 1428 void 1429 cleanup(void) 1430 { 1431 sym_t *sym, *nsym; 1432 int i; 1433 1434 for (i = 0; i < HSHSIZ1; i++) { 1435 for (sym = symtab[i]; sym != NULL; sym = nsym) { 1436 nsym = sym->s_link; 1437 if (sym->s_blklev >= 1) { 1438 if ((*sym->s_rlink = nsym) != NULL) 1439 nsym->s_rlink = sym->s_rlink; 1440 } 1441 } 1442 } 1443 1444 for (i = mblklev; i > 0; i--) 1445 freelblk(i); 1446 } 1447 1448 /* 1449 * Create a new symbol with the name of an existing symbol. 1450 */ 1451 sym_t * 1452 pushdown(sym_t *sym) 1453 { 1454 int h; 1455 sym_t *nsym; 1456 1457 h = hash(sym->s_name); 1458 nsym = getblk(sizeof (sym_t)); 1459 if (sym->s_blklev > blklev) 1460 LERROR("pushdown()"); 1461 nsym->s_name = sym->s_name; 1462 UNIQUE_CURR_POS(nsym->s_dpos); 1463 nsym->s_kind = sym->s_kind; 1464 nsym->s_blklev = blklev; 1465 1466 if ((nsym->s_link = symtab[h]) != NULL) 1467 symtab[h]->s_rlink = &nsym->s_link; 1468 (symtab[h] = nsym)->s_rlink = &symtab[h]; 1469 1470 *dcs->d_ldlsym = nsym; 1471 dcs->d_ldlsym = &nsym->s_dlnxt; 1472 1473 return (nsym); 1474 } 1475 1476 /* 1477 * Free any dynamically allocated memory referenced by 1478 * the value stack or yylval. 1479 * The type of information in yylval is described by tok. 1480 */ 1481 void 1482 freeyyv(void *sp, int tok) 1483 { 1484 if (tok == T_NAME || tok == T_TYPENAME) { 1485 sbuf_t *sb = *(sbuf_t **)sp; 1486 freesb(sb); 1487 } else if (tok == T_CON) { 1488 val_t *val = *(val_t **)sp; 1489 free(val); 1490 } else if (tok == T_STRING) { 1491 strg_t *strg = *(strg_t **)sp; 1492 if (strg->st_tspec == CHAR) { 1493 free(strg->st_cp); 1494 } else if (strg->st_tspec == WCHAR) { 1495 free(strg->st_wcp); 1496 } else { 1497 LERROR("fryylv()"); 1498 } 1499 free(strg); 1500 } 1501 } 1502
Indexes created Thu Oct 02 01:09:59 GMT 2025