Annotation of mandoc/mandoc.c, Revision 1.72
1.72 ! schwarze 1: /* $Id: mandoc.c,v 1.71 2013/12/25 00:50:05 schwarze Exp $ */
1.1 kristaps 2: /*
1.59 schwarze 3: * Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
1.68 schwarze 4: * Copyright (c) 2011, 2012, 2013 Ingo Schwarze <schwarze@openbsd.org>
1.1 kristaps 5: *
6: * Permission to use, copy, modify, and distribute this software for any
7: * purpose with or without fee is hereby granted, provided that the above
8: * copyright notice and this permission notice appear in all copies.
9: *
1.36 schwarze 10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
1.1 kristaps 11: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
1.36 schwarze 12: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
1.1 kristaps 13: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14: * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15: * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16: * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17: */
1.9 kristaps 18: #ifdef HAVE_CONFIG_H
19: #include "config.h"
1.7 kristaps 20: #endif
21:
1.2 kristaps 22: #include <sys/types.h>
23:
1.1 kristaps 24: #include <assert.h>
25: #include <ctype.h>
1.50 kristaps 26: #include <errno.h>
27: #include <limits.h>
1.1 kristaps 28: #include <stdlib.h>
1.4 kristaps 29: #include <stdio.h>
30: #include <string.h>
1.7 kristaps 31: #include <time.h>
1.1 kristaps 32:
1.18 kristaps 33: #include "mandoc.h"
1.1 kristaps 34: #include "libmandoc.h"
35:
1.37 schwarze 36: #define DATESIZE 32
37:
1.18 kristaps 38: static int a2time(time_t *, const char *, const char *);
1.37 schwarze 39: static char *time2a(time_t);
1.7 kristaps 40:
1.45 kristaps 41:
42: enum mandoc_esc
1.69 schwarze 43: mandoc_escape(const char const **end, const char const **start, int *sz)
1.1 kristaps 44: {
1.65 schwarze 45: const char *local_start;
46: int local_sz;
47: char term;
1.45 kristaps 48: enum mandoc_esc gly;
49:
1.65 schwarze 50: /*
51: * When the caller doesn't provide return storage,
52: * use local storage.
53: */
54:
55: if (NULL == start)
56: start = &local_start;
57: if (NULL == sz)
58: sz = &local_sz;
59:
60: /*
61: * Beyond the backslash, at least one input character
62: * is part of the escape sequence. With one exception
63: * (see below), that character won't be returned.
64: */
65:
1.45 kristaps 66: gly = ESCAPE_ERROR;
1.65 schwarze 67: *start = ++*end;
68: *sz = 0;
1.64 schwarze 69: term = '\0';
1.18 kristaps 70:
1.65 schwarze 71: switch ((*start)[-1]) {
1.45 kristaps 72: /*
73: * First the glyphs. There are several different forms of
74: * these, but each eventually returns a substring of the glyph
75: * name.
76: */
77: case ('('):
78: gly = ESCAPE_SPECIAL;
1.65 schwarze 79: *sz = 2;
1.45 kristaps 80: break;
81: case ('['):
82: gly = ESCAPE_SPECIAL;
1.52 kristaps 83: /*
84: * Unicode escapes are defined in groff as \[uXXXX] to
85: * \[u10FFFF], where the contained value must be a valid
86: * Unicode codepoint. Here, however, only check whether
87: * it's not a zero-width escape.
88: */
1.65 schwarze 89: if ('u' == (*start)[0] && ']' != (*start)[1])
1.52 kristaps 90: gly = ESCAPE_UNICODE;
1.45 kristaps 91: term = ']';
92: break;
93: case ('C'):
1.65 schwarze 94: if ('\'' != **start)
1.45 kristaps 95: return(ESCAPE_ERROR);
1.65 schwarze 96: *start = ++*end;
1.70 schwarze 97: if ('u' == (*start)[0] && '\'' != (*start)[1])
98: gly = ESCAPE_UNICODE;
99: else
100: gly = ESCAPE_SPECIAL;
1.45 kristaps 101: term = '\'';
102: break;
1.72 ! schwarze 103:
! 104: /*
! 105: * Escapes taking no arguments at all.
! 106: */
! 107: case ('d'):
! 108: /* FALLTHROUGH */
! 109: case ('u'):
! 110: return(ESCAPE_IGNORE);
1.63 schwarze 111:
112: /*
113: * The \z escape is supposed to output the following
114: * character without advancing the cursor position.
115: * Since we are mostly dealing with terminal mode,
116: * let us just skip the next character.
117: */
118: case ('z'):
119: return(ESCAPE_SKIPCHAR);
1.1 kristaps 120:
1.45 kristaps 121: /*
122: * Handle all triggers matching \X(xy, \Xx, and \X[xxxx], where
123: * 'X' is the trigger. These have opaque sub-strings.
124: */
125: case ('F'):
126: /* FALLTHROUGH */
127: case ('g'):
1.24 kristaps 128: /* FALLTHROUGH */
1.45 kristaps 129: case ('k'):
1.24 kristaps 130: /* FALLTHROUGH */
1.45 kristaps 131: case ('M'):
1.24 kristaps 132: /* FALLTHROUGH */
1.45 kristaps 133: case ('m'):
1.24 kristaps 134: /* FALLTHROUGH */
1.45 kristaps 135: case ('n'):
1.24 kristaps 136: /* FALLTHROUGH */
1.45 kristaps 137: case ('V'):
1.24 kristaps 138: /* FALLTHROUGH */
1.45 kristaps 139: case ('Y'):
1.60 schwarze 140: gly = ESCAPE_IGNORE;
1.24 kristaps 141: /* FALLTHROUGH */
1.45 kristaps 142: case ('f'):
143: if (ESCAPE_ERROR == gly)
144: gly = ESCAPE_FONT;
1.65 schwarze 145: switch (**start) {
1.45 kristaps 146: case ('('):
1.65 schwarze 147: *start = ++*end;
148: *sz = 2;
1.45 kristaps 149: break;
150: case ('['):
1.65 schwarze 151: *start = ++*end;
1.45 kristaps 152: term = ']';
153: break;
154: default:
1.65 schwarze 155: *sz = 1;
1.45 kristaps 156: break;
157: }
158: break;
159:
160: /*
161: * These escapes are of the form \X'Y', where 'X' is the trigger
162: * and 'Y' is any string. These have opaque sub-strings.
163: */
164: case ('A'):
1.24 kristaps 165: /* FALLTHROUGH */
1.45 kristaps 166: case ('b'):
1.24 kristaps 167: /* FALLTHROUGH */
168: case ('D'):
169: /* FALLTHROUGH */
1.45 kristaps 170: case ('o'):
1.24 kristaps 171: /* FALLTHROUGH */
1.45 kristaps 172: case ('R'):
1.24 kristaps 173: /* FALLTHROUGH */
1.45 kristaps 174: case ('X'):
1.24 kristaps 175: /* FALLTHROUGH */
1.45 kristaps 176: case ('Z'):
1.65 schwarze 177: if ('\'' != **start)
1.45 kristaps 178: return(ESCAPE_ERROR);
179: gly = ESCAPE_IGNORE;
1.65 schwarze 180: *start = ++*end;
1.24 kristaps 181: term = '\'';
182: break;
1.45 kristaps 183:
184: /*
185: * These escapes are of the form \X'N', where 'X' is the trigger
186: * and 'N' resolves to a numerical expression.
187: */
188: case ('B'):
189: /* FALLTHROUGH */
1.28 kristaps 190: case ('h'):
191: /* FALLTHROUGH */
1.45 kristaps 192: case ('H'):
193: /* FALLTHROUGH */
194: case ('L'):
195: /* FALLTHROUGH */
196: case ('l'):
1.60 schwarze 197: gly = ESCAPE_NUMBERED;
1.45 kristaps 198: /* FALLTHROUGH */
199: case ('S'):
200: /* FALLTHROUGH */
1.28 kristaps 201: case ('v'):
202: /* FALLTHROUGH */
1.45 kristaps 203: case ('w'):
204: /* FALLTHROUGH */
205: case ('x'):
1.65 schwarze 206: if ('\'' != **start)
207: return(ESCAPE_ERROR);
1.45 kristaps 208: if (ESCAPE_ERROR == gly)
209: gly = ESCAPE_IGNORE;
1.65 schwarze 210: *start = ++*end;
1.64 schwarze 211: term = '\'';
1.45 kristaps 212: break;
1.60 schwarze 213:
214: /*
215: * Special handling for the numbered character escape.
216: * XXX Do any other escapes need similar handling?
217: */
218: case ('N'):
1.65 schwarze 219: if ('\0' == **start)
1.60 schwarze 220: return(ESCAPE_ERROR);
1.65 schwarze 221: (*end)++;
222: if (isdigit((unsigned char)**start)) {
223: *sz = 1;
1.60 schwarze 224: return(ESCAPE_IGNORE);
1.65 schwarze 225: }
226: (*start)++;
1.60 schwarze 227: while (isdigit((unsigned char)**end))
228: (*end)++;
1.65 schwarze 229: *sz = *end - *start;
1.60 schwarze 230: if ('\0' != **end)
231: (*end)++;
232: return(ESCAPE_NUMBERED);
1.45 kristaps 233:
234: /*
235: * Sizes get a special category of their own.
236: */
1.8 kristaps 237: case ('s'):
1.45 kristaps 238: gly = ESCAPE_IGNORE;
1.28 kristaps 239:
1.45 kristaps 240: /* See +/- counts as a sign. */
1.65 schwarze 241: if ('+' == **end || '-' == **end || ASCII_HYPH == **end)
242: (*end)++;
1.8 kristaps 243:
1.65 schwarze 244: switch (**end) {
1.22 kristaps 245: case ('('):
1.65 schwarze 246: *start = ++*end;
247: *sz = 2;
1.22 kristaps 248: break;
249: case ('['):
1.65 schwarze 250: *start = ++*end;
1.64 schwarze 251: term = ']';
1.22 kristaps 252: break;
253: case ('\''):
1.65 schwarze 254: *start = ++*end;
1.64 schwarze 255: term = '\'';
1.22 kristaps 256: break;
257: default:
1.65 schwarze 258: *sz = 1;
1.22 kristaps 259: break;
1.8 kristaps 260: }
261:
1.45 kristaps 262: break;
1.33 kristaps 263:
1.45 kristaps 264: /*
265: * Anything else is assumed to be a glyph.
1.65 schwarze 266: * In this case, pass back the character after the backslash.
1.45 kristaps 267: */
268: default:
269: gly = ESCAPE_SPECIAL;
1.65 schwarze 270: *start = --*end;
271: *sz = 1;
1.22 kristaps 272: break;
1.45 kristaps 273: }
274:
275: assert(ESCAPE_ERROR != gly);
276:
277: /*
1.64 schwarze 278: * Read up to the terminating character,
279: * paying attention to nested escapes.
1.45 kristaps 280: */
281:
282: if ('\0' != term) {
1.64 schwarze 283: while (**end != term) {
284: switch (**end) {
285: case ('\0'):
286: return(ESCAPE_ERROR);
287: case ('\\'):
288: (*end)++;
289: if (ESCAPE_ERROR ==
290: mandoc_escape(end, NULL, NULL))
291: return(ESCAPE_ERROR);
292: break;
293: default:
294: (*end)++;
295: break;
296: }
297: }
1.65 schwarze 298: *sz = (*end)++ - *start;
1.64 schwarze 299: } else {
1.65 schwarze 300: assert(*sz > 0);
301: if ((size_t)*sz > strlen(*start))
1.45 kristaps 302: return(ESCAPE_ERROR);
1.65 schwarze 303: *end += *sz;
1.45 kristaps 304: }
305:
306: /* Run post-processors. */
307:
308: switch (gly) {
309: case (ESCAPE_FONT):
1.68 schwarze 310: if (2 == *sz) {
311: if ('C' == **start) {
312: /*
313: * Treat constant-width font modes
314: * just like regular font modes.
315: */
316: (*start)++;
317: (*sz)--;
318: } else {
319: if ('B' == (*start)[0] && 'I' == (*start)[1])
320: gly = ESCAPE_FONTBI;
321: break;
322: }
1.65 schwarze 323: } else if (1 != *sz)
1.45 kristaps 324: break;
1.61 kristaps 325:
1.65 schwarze 326: switch (**start) {
1.45 kristaps 327: case ('3'):
328: /* FALLTHROUGH */
329: case ('B'):
330: gly = ESCAPE_FONTBOLD;
331: break;
332: case ('2'):
333: /* FALLTHROUGH */
334: case ('I'):
335: gly = ESCAPE_FONTITALIC;
1.22 kristaps 336: break;
1.45 kristaps 337: case ('P'):
338: gly = ESCAPE_FONTPREV;
1.22 kristaps 339: break;
1.45 kristaps 340: case ('1'):
341: /* FALLTHROUGH */
342: case ('R'):
343: gly = ESCAPE_FONTROMAN;
1.1 kristaps 344: break;
345: }
1.46 kristaps 346: break;
1.45 kristaps 347: case (ESCAPE_SPECIAL):
1.65 schwarze 348: if (1 == *sz && 'c' == **start)
1.45 kristaps 349: gly = ESCAPE_NOSPACE;
1.22 kristaps 350: break;
1.1 kristaps 351: default:
1.22 kristaps 352: break;
1.1 kristaps 353: }
354:
1.45 kristaps 355: return(gly);
1.1 kristaps 356: }
1.4 kristaps 357:
358: void *
359: mandoc_calloc(size_t num, size_t size)
360: {
361: void *ptr;
362:
363: ptr = calloc(num, size);
364: if (NULL == ptr) {
1.6 kristaps 365: perror(NULL);
1.35 kristaps 366: exit((int)MANDOCLEVEL_SYSERR);
1.4 kristaps 367: }
368:
369: return(ptr);
370: }
371:
372:
373: void *
374: mandoc_malloc(size_t size)
375: {
376: void *ptr;
377:
378: ptr = malloc(size);
379: if (NULL == ptr) {
1.6 kristaps 380: perror(NULL);
1.35 kristaps 381: exit((int)MANDOCLEVEL_SYSERR);
1.4 kristaps 382: }
383:
384: return(ptr);
385: }
386:
387:
388: void *
389: mandoc_realloc(void *ptr, size_t size)
390: {
391:
392: ptr = realloc(ptr, size);
393: if (NULL == ptr) {
1.6 kristaps 394: perror(NULL);
1.35 kristaps 395: exit((int)MANDOCLEVEL_SYSERR);
1.4 kristaps 396: }
397:
398: return(ptr);
399: }
400:
1.55 kristaps 401: char *
402: mandoc_strndup(const char *ptr, size_t sz)
403: {
404: char *p;
405:
406: p = mandoc_malloc(sz + 1);
407: memcpy(p, ptr, sz);
408: p[(int)sz] = '\0';
409: return(p);
410: }
1.4 kristaps 411:
412: char *
413: mandoc_strdup(const char *ptr)
414: {
415: char *p;
416:
417: p = strdup(ptr);
418: if (NULL == p) {
1.6 kristaps 419: perror(NULL);
1.35 kristaps 420: exit((int)MANDOCLEVEL_SYSERR);
1.4 kristaps 421: }
422:
423: return(p);
1.36 schwarze 424: }
425:
426: /*
427: * Parse a quoted or unquoted roff-style request or macro argument.
428: * Return a pointer to the parsed argument, which is either the original
429: * pointer or advanced by one byte in case the argument is quoted.
1.71 schwarze 430: * NUL-terminate the argument in place.
1.36 schwarze 431: * Collapse pairs of quotes inside quoted arguments.
432: * Advance the argument pointer to the next argument,
1.71 schwarze 433: * or to the NUL byte terminating the argument line.
1.36 schwarze 434: */
435: char *
1.48 kristaps 436: mandoc_getarg(struct mparse *parse, char **cpp, int ln, int *pos)
1.36 schwarze 437: {
438: char *start, *cp;
439: int quoted, pairs, white;
440:
441: /* Quoting can only start with a new word. */
442: start = *cpp;
1.47 kristaps 443: quoted = 0;
1.36 schwarze 444: if ('"' == *start) {
445: quoted = 1;
446: start++;
1.47 kristaps 447: }
1.36 schwarze 448:
449: pairs = 0;
450: white = 0;
451: for (cp = start; '\0' != *cp; cp++) {
1.67 schwarze 452:
453: /*
454: * Move the following text left
455: * after quoted quotes and after "\\" and "\t".
456: */
1.36 schwarze 457: if (pairs)
458: cp[-pairs] = cp[0];
1.67 schwarze 459:
1.36 schwarze 460: if ('\\' == cp[0]) {
1.67 schwarze 461: /*
462: * In copy mode, translate double to single
463: * backslashes and backslash-t to literal tabs.
464: */
465: switch (cp[1]) {
466: case ('t'):
467: cp[0] = '\t';
468: /* FALLTHROUGH */
469: case ('\\'):
1.36 schwarze 470: pairs++;
471: cp++;
1.67 schwarze 472: break;
473: case (' '):
1.36 schwarze 474: /* Skip escaped blanks. */
1.67 schwarze 475: if (0 == quoted)
476: cp++;
477: break;
478: default:
479: break;
480: }
1.36 schwarze 481: } else if (0 == quoted) {
482: if (' ' == cp[0]) {
483: /* Unescaped blanks end unquoted args. */
484: white = 1;
485: break;
486: }
487: } else if ('"' == cp[0]) {
488: if ('"' == cp[1]) {
489: /* Quoted quotes collapse. */
490: pairs++;
491: cp++;
492: } else {
493: /* Unquoted quotes end quoted args. */
494: quoted = 2;
495: break;
496: }
497: }
498: }
499:
500: /* Quoted argument without a closing quote. */
1.48 kristaps 501: if (1 == quoted)
1.42 kristaps 502: mandoc_msg(MANDOCERR_BADQUOTE, parse, ln, *pos, NULL);
1.36 schwarze 503:
1.71 schwarze 504: /* NUL-terminate this argument and move to the next one. */
1.36 schwarze 505: if (pairs)
506: cp[-pairs] = '\0';
507: if ('\0' != *cp) {
508: *cp++ = '\0';
509: while (' ' == *cp)
510: cp++;
511: }
1.39 kristaps 512: *pos += (int)(cp - start) + (quoted ? 1 : 0);
1.36 schwarze 513: *cpp = cp;
514:
1.48 kristaps 515: if ('\0' == *cp && (white || ' ' == cp[-1]))
1.42 kristaps 516: mandoc_msg(MANDOCERR_EOLNSPACE, parse, ln, *pos, NULL);
1.36 schwarze 517:
518: return(start);
1.4 kristaps 519: }
1.7 kristaps 520:
521: static int
522: a2time(time_t *t, const char *fmt, const char *p)
523: {
524: struct tm tm;
525: char *pp;
526:
527: memset(&tm, 0, sizeof(struct tm));
528:
1.56 kristaps 529: pp = NULL;
530: #ifdef HAVE_STRPTIME
1.7 kristaps 531: pp = strptime(p, fmt, &tm);
1.56 kristaps 532: #endif
1.7 kristaps 533: if (NULL != pp && '\0' == *pp) {
534: *t = mktime(&tm);
535: return(1);
536: }
537:
538: return(0);
539: }
540:
1.37 schwarze 541: static char *
542: time2a(time_t t)
543: {
1.56 kristaps 544: struct tm *tm;
1.38 schwarze 545: char *buf, *p;
546: size_t ssz;
1.37 schwarze 547: int isz;
548:
1.56 kristaps 549: tm = localtime(&t);
1.37 schwarze 550:
1.38 schwarze 551: /*
552: * Reserve space:
553: * up to 9 characters for the month (September) + blank
554: * up to 2 characters for the day + comma + blank
555: * 4 characters for the year and a terminating '\0'
556: */
557: p = buf = mandoc_malloc(10 + 4 + 4 + 1);
558:
1.56 kristaps 559: if (0 == (ssz = strftime(p, 10 + 1, "%B ", tm)))
1.38 schwarze 560: goto fail;
561: p += (int)ssz;
1.37 schwarze 562:
1.56 kristaps 563: if (-1 == (isz = snprintf(p, 4 + 1, "%d, ", tm->tm_mday)))
1.38 schwarze 564: goto fail;
1.37 schwarze 565: p += isz;
566:
1.56 kristaps 567: if (0 == strftime(p, 4 + 1, "%Y", tm))
1.38 schwarze 568: goto fail;
569: return(buf);
570:
571: fail:
572: free(buf);
573: return(NULL);
1.37 schwarze 574: }
575:
576: char *
1.42 kristaps 577: mandoc_normdate(struct mparse *parse, char *in, int ln, int pos)
1.7 kristaps 578: {
1.37 schwarze 579: char *out;
1.7 kristaps 580: time_t t;
581:
1.37 schwarze 582: if (NULL == in || '\0' == *in ||
583: 0 == strcmp(in, "$" "Mdocdate$")) {
1.42 kristaps 584: mandoc_msg(MANDOCERR_NODATE, parse, ln, pos, NULL);
1.37 schwarze 585: time(&t);
586: }
1.62 schwarze 587: else if (a2time(&t, "%Y-%m-%d", in))
588: t = 0;
1.37 schwarze 589: else if (!a2time(&t, "$" "Mdocdate: %b %d %Y $", in) &&
1.62 schwarze 590: !a2time(&t, "%b %d, %Y", in)) {
1.42 kristaps 591: mandoc_msg(MANDOCERR_BADDATE, parse, ln, pos, NULL);
1.37 schwarze 592: t = 0;
1.7 kristaps 593: }
1.37 schwarze 594: out = t ? time2a(t) : NULL;
1.38 schwarze 595: return(out ? out : mandoc_strdup(in));
1.7 kristaps 596: }
597:
1.12 kristaps 598: int
1.23 schwarze 599: mandoc_eos(const char *p, size_t sz, int enclosed)
1.12 kristaps 600: {
1.23 schwarze 601: const char *q;
602: int found;
1.12 kristaps 603:
1.13 kristaps 604: if (0 == sz)
605: return(0);
1.12 kristaps 606:
1.14 kristaps 607: /*
608: * End-of-sentence recognition must include situations where
609: * some symbols, such as `)', allow prior EOS punctuation to
1.49 kristaps 610: * propagate outward.
1.14 kristaps 611: */
612:
1.23 schwarze 613: found = 0;
1.25 kristaps 614: for (q = p + (int)sz - 1; q >= p; q--) {
1.23 schwarze 615: switch (*q) {
1.14 kristaps 616: case ('\"'):
617: /* FALLTHROUGH */
618: case ('\''):
1.15 kristaps 619: /* FALLTHROUGH */
620: case (']'):
1.14 kristaps 621: /* FALLTHROUGH */
622: case (')'):
1.23 schwarze 623: if (0 == found)
624: enclosed = 1;
1.14 kristaps 625: break;
626: case ('.'):
627: /* FALLTHROUGH */
628: case ('!'):
629: /* FALLTHROUGH */
630: case ('?'):
1.23 schwarze 631: found = 1;
632: break;
1.14 kristaps 633: default:
1.27 joerg 634: return(found && (!enclosed || isalnum((unsigned char)*q)));
1.14 kristaps 635: }
1.12 kristaps 636: }
637:
1.23 schwarze 638: return(found && !enclosed);
1.44 kristaps 639: }
1.50 kristaps 640:
641: /*
642: * Convert a string to a long that may not be <0.
643: * If the string is invalid, or is less than 0, return -1.
644: */
645: int
1.54 kristaps 646: mandoc_strntoi(const char *p, size_t sz, int base)
1.50 kristaps 647: {
648: char buf[32];
649: char *ep;
650: long v;
651:
652: if (sz > 31)
653: return(-1);
654:
655: memcpy(buf, p, sz);
1.51 kristaps 656: buf[(int)sz] = '\0';
1.50 kristaps 657:
658: errno = 0;
659: v = strtol(buf, &ep, base);
660:
661: if (buf[0] == '\0' || *ep != '\0')
662: return(-1);
663:
1.54 kristaps 664: if (v > INT_MAX)
665: v = INT_MAX;
666: if (v < INT_MIN)
667: v = INT_MIN;
1.50 kristaps 668:
669: return((int)v);
670: }
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