Annotation of src/usr.bin/m4/main.c, Revision 1.81
1.81 ! espie 1: /* $OpenBSD: main.c,v 1.80 2011/09/27 07:24:02 espie Exp $ */
1.7 deraadt 2: /* $NetBSD: main.c,v 1.12 1997/02/08 23:54:49 cgd Exp $ */
1.1 deraadt 3:
4: /*-
5: * Copyright (c) 1989, 1993
6: * The Regents of the University of California. All rights reserved.
7: *
8: * This code is derived from software contributed to Berkeley by
9: * Ozan Yigit at York University.
10: *
11: * Redistribution and use in source and binary forms, with or without
12: * modification, are permitted provided that the following conditions
13: * are met:
14: * 1. Redistributions of source code must retain the above copyright
15: * notice, this list of conditions and the following disclaimer.
16: * 2. Redistributions in binary form must reproduce the above copyright
17: * notice, this list of conditions and the following disclaimer in the
18: * documentation and/or other materials provided with the distribution.
1.55 millert 19: * 3. Neither the name of the University nor the names of its contributors
1.1 deraadt 20: * may be used to endorse or promote products derived from this software
21: * without specific prior written permission.
22: *
23: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33: * SUCH DAMAGE.
34: */
35:
36: /*
37: * main.c
38: * Facility: m4 macro processor
39: * by: oz
40: */
41:
1.21 espie 42: #include <assert.h>
1.1 deraadt 43: #include <signal.h>
1.74 espie 44: #include <err.h>
1.1 deraadt 45: #include <errno.h>
46: #include <unistd.h>
47: #include <stdio.h>
48: #include <ctype.h>
49: #include <string.h>
1.13 espie 50: #include <stddef.h>
1.69 espie 51: #include <stdint.h>
1.34 espie 52: #include <stdlib.h>
1.63 espie 53: #include <ohash.h>
1.1 deraadt 54: #include "mdef.h"
55: #include "stdd.h"
56: #include "extern.h"
57: #include "pathnames.h"
58:
1.79 marco 59: stae *mstack; /* stack of m4 machine */
60: char *sstack; /* shadow stack, for string space extension */
1.34 espie 61: static size_t STACKMAX; /* current maximum size of stack */
1.79 marco 62: int sp; /* current m4 stack pointer */
63: int fp; /* m4 call frame pointer */
1.26 espie 64: struct input_file infile[MAXINP];/* input file stack (0=stdin) */
1.36 espie 65: FILE **outfile; /* diversion array(0=bitbucket)*/
66: int maxout;
1.1 deraadt 67: FILE *active; /* active output file pointer */
1.79 marco 68: int ilevel = 0; /* input file stack pointer */
69: int oindex = 0; /* diversion index.. */
1.1 deraadt 70: char *null = ""; /* as it says.. just a null.. */
1.79 marco 71: char **m4wraps = NULL; /* m4wraps array. */
1.66 espie 72: int maxwraps = 0; /* size of m4wraps array */
73: int wrapindex = 0; /* current offset in m4wraps */
1.2 deraadt 74: char lquote[MAXCCHARS+1] = {LQUOTE}; /* left quote character (`) */
75: char rquote[MAXCCHARS+1] = {RQUOTE}; /* right quote character (') */
76: char scommt[MAXCCHARS+1] = {SCOMMT}; /* start character for comment */
77: char ecommt[MAXCCHARS+1] = {ECOMMT}; /* end character for comment */
1.54 espie 78: int synch_lines = 0; /* line synchronisation for C preprocessor */
1.77 sthen 79: int prefix_builtins = 0; /* -P option to prefix builtin keywords */
1.1 deraadt 80:
1.63 espie 81: struct keyblk {
82: char *knam; /* keyword name */
83: int ktyp; /* keyword type */
84: };
85:
1.1 deraadt 86: struct keyblk keywrds[] = { /* m4 keywords to be installed */
1.8 millert 87: { "include", INCLTYPE },
88: { "sinclude", SINCTYPE },
89: { "define", DEFITYPE },
90: { "defn", DEFNTYPE },
1.24 espie 91: { "divert", DIVRTYPE | NOARGS },
1.8 millert 92: { "expr", EXPRTYPE },
93: { "eval", EXPRTYPE },
94: { "substr", SUBSTYPE },
95: { "ifelse", IFELTYPE },
96: { "ifdef", IFDFTYPE },
97: { "len", LENGTYPE },
98: { "incr", INCRTYPE },
99: { "decr", DECRTYPE },
1.24 espie 100: { "dnl", DNLNTYPE | NOARGS },
101: { "changequote", CHNQTYPE | NOARGS },
102: { "changecom", CHNCTYPE | NOARGS },
1.8 millert 103: { "index", INDXTYPE },
1.1 deraadt 104: #ifdef EXTENDED
1.8 millert 105: { "paste", PASTTYPE },
106: { "spaste", SPASTYPE },
1.79 marco 107: /* Newer extensions, needed to handle gnu-m4 scripts */
1.31 espie 108: { "indir", INDIRTYPE},
109: { "builtin", BUILTINTYPE},
110: { "patsubst", PATSTYPE},
111: { "regexp", REGEXPTYPE},
1.35 espie 112: { "esyscmd", ESYSCMDTYPE},
1.31 espie 113: { "__file__", FILENAMETYPE | NOARGS},
114: { "__line__", LINETYPE | NOARGS},
1.1 deraadt 115: #endif
1.8 millert 116: { "popdef", POPDTYPE },
117: { "pushdef", PUSDTYPE },
1.24 espie 118: { "dumpdef", DUMPTYPE | NOARGS },
119: { "shift", SHIFTYPE | NOARGS },
1.8 millert 120: { "translit", TRNLTYPE },
121: { "undefine", UNDFTYPE },
1.24 espie 122: { "undivert", UNDVTYPE | NOARGS },
123: { "divnum", DIVNTYPE | NOARGS },
1.8 millert 124: { "maketemp", MKTMTYPE },
1.78 espie 125: { "mkstemp", MKTMTYPE },
1.24 espie 126: { "errprint", ERRPTYPE | NOARGS },
127: { "m4wrap", M4WRTYPE | NOARGS },
128: { "m4exit", EXITTYPE | NOARGS },
1.8 millert 129: { "syscmd", SYSCTYPE },
1.24 espie 130: { "sysval", SYSVTYPE | NOARGS },
1.49 espie 131: { "traceon", TRACEONTYPE | NOARGS },
132: { "traceoff", TRACEOFFTYPE | NOARGS },
1.1 deraadt 133:
1.79 marco 134: #if defined(unix) || defined(__unix__)
1.24 espie 135: { "unix", SELFTYPE | NOARGS },
1.1 deraadt 136: #else
137: #ifdef vms
1.24 espie 138: { "vms", SELFTYPE | NOARGS },
1.1 deraadt 139: #endif
140: #endif
141: };
142:
143: #define MAXKEYS (sizeof(keywrds)/sizeof(struct keyblk))
144:
145: extern int optind;
146: extern char *optarg;
147:
1.27 espie 148: #define MAXRECORD 50
149: static struct position {
150: char *name;
151: unsigned long line;
152: } quotes[MAXRECORD], paren[MAXRECORD];
153:
1.52 millert 154: static void record(struct position *, int);
155: static void dump_stack(struct position *, int);
1.27 espie 156:
1.52 millert 157: static void macro(void);
158: static void initkwds(void);
159: static ndptr inspect(int, char *);
160: static int do_look_ahead(int, const char *);
1.54 espie 161: static void reallyoutputstr(const char *);
162: static void reallyputchar(int);
1.18 espie 163:
1.52 millert 164: static void enlarge_stack(void);
1.34 espie 165:
1.52 millert 166: int main(int, char *[]);
1.1 deraadt 167:
1.81 ! espie 168: int exit_code = 0;
! 169:
1.1 deraadt 170: int
1.53 espie 171: main(int argc, char *argv[])
1.1 deraadt 172: {
1.17 espie 173: int c;
174: int n;
1.1 deraadt 175: char *p;
176:
177: if (signal(SIGINT, SIG_IGN) != SIG_IGN)
178: signal(SIGINT, onintr);
179:
1.61 espie 180: init_macros();
1.14 espie 181: initspaces();
1.34 espie 182: STACKMAX = INITSTACKMAX;
183:
1.64 espie 184: mstack = (stae *)xalloc(sizeof(stae) * STACKMAX, NULL);
185: sstack = (char *)xalloc(STACKMAX, NULL);
1.1 deraadt 186:
1.36 espie 187: maxout = 0;
188: outfile = NULL;
189: resizedivs(MAXOUT);
190:
1.77 sthen 191: while ((c = getopt(argc, argv, "gst:d:D:U:o:I:P")) != -1)
1.1 deraadt 192: switch(c) {
193:
194: case 'D': /* define something..*/
195: for (p = optarg; *p; p++)
196: if (*p == '=')
197: break;
198: if (*p)
199: *p++ = EOS;
200: dodefine(optarg, p);
1.16 espie 201: break;
202: case 'I':
203: addtoincludepath(optarg);
1.1 deraadt 204: break;
1.77 sthen 205: case 'P':
206: prefix_builtins = 1;
207: break;
1.1 deraadt 208: case 'U': /* undefine... */
1.59 espie 209: macro_popdef(optarg);
1.32 espie 210: break;
211: case 'g':
212: mimic_gnu = 1;
1.1 deraadt 213: break;
1.46 espie 214: case 'd':
215: set_trace_flags(optarg);
1.47 espie 216: break;
1.54 espie 217: case 's':
218: synch_lines = 1;
219: break;
1.47 espie 220: case 't':
1.49 espie 221: mark_traced(optarg, 1);
1.46 espie 222: break;
1.38 aaron 223: case 'o':
1.46 espie 224: trace_file(optarg);
1.38 aaron 225: break;
1.1 deraadt 226: case '?':
227: usage();
228: }
229:
230: argc -= optind;
231: argv += optind;
1.77 sthen 232:
233: initkwds();
234: if (mimic_gnu)
235: setup_builtin("format", FORMATTYPE);
1.1 deraadt 236:
237: active = stdout; /* default active output */
238: bbase[0] = bufbase;
239: if (!argc) {
1.79 marco 240: sp = -1; /* stack pointer initialized */
241: fp = 0; /* frame pointer initialized */
1.26 espie 242: set_input(infile+0, stdin, "stdin");
243: /* default input (naturally) */
1.1 deraadt 244: macro();
245: } else
246: for (; argc--; ++argv) {
247: p = *argv;
1.13 espie 248: if (p[0] == '-' && p[1] == EOS)
1.26 espie 249: set_input(infile, stdin, "stdin");
250: else if (fopen_trypath(infile, p) == NULL)
1.11 espie 251: err(1, "%s", p);
1.1 deraadt 252: sp = -1;
1.79 marco 253: fp = 0;
1.1 deraadt 254: macro();
1.79 marco 255: release_input(infile);
1.1 deraadt 256: }
257:
1.66 espie 258: if (wrapindex) {
259: int i;
260:
1.1 deraadt 261: ilevel = 0; /* in case m4wrap includes.. */
262: bufbase = bp = buf; /* use the entire buffer */
1.66 espie 263: if (mimic_gnu) {
264: while (wrapindex != 0) {
265: for (i = 0; i < wrapindex; i++)
266: pbstr(m4wraps[i]);
267: wrapindex =0;
268: macro();
269: }
270: } else {
271: for (i = 0; i < wrapindex; i++) {
272: pbstr(m4wraps[i]);
273: macro();
1.79 marco 274: }
1.66 espie 275: }
1.1 deraadt 276: }
277:
278: if (active != stdout)
279: active = stdout; /* reset output just in case */
1.36 espie 280: for (n = 1; n < maxout; n++) /* default wrap-up: undivert */
1.1 deraadt 281: if (outfile[n] != NULL)
282: getdiv(n);
283: /* remove bitbucket if used */
284: if (outfile[0] != NULL) {
285: (void) fclose(outfile[0]);
286: }
287:
1.81 ! espie 288: return exit_code;
1.1 deraadt 289: }
290:
291: /*
1.21 espie 292: * Look ahead for `token'.
1.2 deraadt 293: * (on input `t == token[0]')
294: * Used for comment and quoting delimiters.
295: * Returns 1 if `token' present; copied to output.
296: * 0 if `token' not found; all characters pushed back
297: */
1.18 espie 298: static int
1.53 espie 299: do_look_ahead(int t, const char *token)
1.2 deraadt 300: {
301: int i;
302:
1.43 espie 303: assert((unsigned char)t == (unsigned char)token[0]);
1.2 deraadt 304:
305: for (i = 1; *++token; i++) {
306: t = gpbc();
1.43 espie 307: if (t == EOF || (unsigned char)t != (unsigned char)*token) {
1.68 espie 308: pushback(t);
1.2 deraadt 309: while (--i)
1.68 espie 310: pushback(*--token);
1.2 deraadt 311: return 0;
312: }
313: }
314: return 1;
315: }
316:
1.79 marco 317: #define LOOK_AHEAD(t, token) (t != EOF && \
318: (unsigned char)(t)==(unsigned char)(token)[0] && \
1.43 espie 319: do_look_ahead(t,token))
1.2 deraadt 320:
321: /*
1.1 deraadt 322: * macro - the work horse..
323: */
1.18 espie 324: static void
1.56 deraadt 325: macro(void)
1.17 espie 326: {
1.34 espie 327: char token[MAXTOK+1];
1.17 espie 328: int t, l;
329: ndptr p;
330: int nlpar;
1.1 deraadt 331:
332: cycle {
1.2 deraadt 333: t = gpbc();
1.68 espie 334:
335: if (LOOK_AHEAD(t,lquote)) { /* strip quotes */
336: nlpar = 0;
337: record(quotes, nlpar++);
338: /*
339: * Opening quote: scan forward until matching
340: * closing quote has been found.
341: */
342: do {
343:
344: l = gpbc();
345: if (LOOK_AHEAD(l,rquote)) {
346: if (--nlpar > 0)
347: outputstr(rquote);
348: } else if (LOOK_AHEAD(l,lquote)) {
349: record(quotes, nlpar++);
350: outputstr(lquote);
351: } else if (l == EOF) {
352: if (nlpar == 1)
353: warnx("unclosed quote:");
354: else
355: warnx("%d unclosed quotes:", nlpar);
356: dump_stack(quotes, nlpar);
357: exit(1);
358: } else {
359: if (nlpar > 0) {
360: if (sp < 0)
361: reallyputchar(l);
362: else
363: CHRSAVE(l);
364: }
365: }
366: }
367: while (nlpar != 0);
368: } else if (sp < 0 && LOOK_AHEAD(t, scommt)) {
369: reallyoutputstr(scommt);
370:
371: for(;;) {
372: t = gpbc();
373: if (LOOK_AHEAD(t, ecommt)) {
374: reallyoutputstr(ecommt);
375: break;
376: }
377: if (t == EOF)
378: break;
379: reallyputchar(t);
380: }
381: } else if (t == '_' || isalpha(t)) {
1.29 espie 382: p = inspect(t, token);
1.59 espie 383: if (p != NULL)
1.68 espie 384: pushback(l = gpbc());
1.79 marco 385: if (p == NULL || (l != LPAREN &&
1.59 espie 386: (macro_getdef(p)->type & NEEDARGS) != 0))
1.29 espie 387: outputstr(token);
1.1 deraadt 388: else {
389: /*
390: * real thing.. First build a call frame:
391: */
392: pushf(fp); /* previous call frm */
1.59 espie 393: pushf(macro_getdef(p)->type); /* type of the call */
1.63 espie 394: pushf(is_traced(p));
1.1 deraadt 395: pushf(0); /* parenthesis level */
396: fp = sp; /* new frame pointer */
397: /*
398: * now push the string arguments:
399: */
1.59 espie 400: pushs1(macro_getdef(p)->defn); /* defn string */
401: pushs1((char *)macro_name(p)); /* macro name */
1.79 marco 402: pushs(ep); /* start next..*/
1.1 deraadt 403:
1.79 marco 404: if (l != LPAREN && PARLEV == 0) {
1.41 espie 405: /* no bracks */
406: chrsave(EOS);
407:
408: if (sp == STACKMAX)
409: errx(1, "internal stack overflow");
1.79 marco 410: eval((const char **) mstack+fp+1, 2,
1.60 espie 411: CALTYP, TRACESTATUS);
1.41 espie 412:
413: ep = PREVEP; /* flush strspace */
414: sp = PREVSP; /* previous sp.. */
415: fp = PREVFP; /* rewind stack...*/
1.1 deraadt 416: }
417: }
1.41 espie 418: } else if (t == EOF) {
1.75 espie 419: if (sp > -1 && ilevel <= 0) {
1.27 espie 420: warnx( "unexpected end of input, unclosed parenthesis:");
421: dump_stack(paren, PARLEV);
422: exit(1);
423: }
1.1 deraadt 424: if (ilevel <= 0)
425: break; /* all done thanks.. */
1.26 espie 426: release_input(infile+ilevel--);
1.54 espie 427: emit_synchline();
1.1 deraadt 428: bufbase = bbase[ilevel];
429: continue;
1.68 espie 430: } else if (sp < 0) { /* not in a macro at all */
1.54 espie 431: reallyputchar(t); /* output directly.. */
1.1 deraadt 432: }
433:
434: else switch(t) {
435:
436: case LPAREN:
437: if (PARLEV > 0)
438: chrsave(t);
1.76 espie 439: while (isspace(l = gpbc())) /* skip blank, tab, nl.. */
440: if (PARLEV > 0)
441: chrsave(l);
1.68 espie 442: pushback(l);
1.27 espie 443: record(paren, PARLEV++);
1.1 deraadt 444: break;
445:
446: case RPAREN:
447: if (--PARLEV > 0)
448: chrsave(t);
449: else { /* end of argument list */
450: chrsave(EOS);
451:
452: if (sp == STACKMAX)
1.11 espie 453: errx(1, "internal stack overflow");
1.1 deraadt 454:
1.79 marco 455: eval((const char **) mstack+fp+1, sp-fp,
1.60 espie 456: CALTYP, TRACESTATUS);
1.1 deraadt 457:
458: ep = PREVEP; /* flush strspace */
459: sp = PREVSP; /* previous sp.. */
460: fp = PREVFP; /* rewind stack...*/
461: }
462: break;
463:
464: case COMMA:
465: if (PARLEV == 1) {
466: chrsave(EOS); /* new argument */
467: while (isspace(l = gpbc()))
468: ;
1.68 espie 469: pushback(l);
1.1 deraadt 470: pushs(ep);
471: } else
472: chrsave(t);
473: break;
474:
475: default:
1.22 espie 476: if (LOOK_AHEAD(t, scommt)) {
477: char *p;
478: for (p = scommt; *p; p++)
479: chrsave(*p);
480: for(;;) {
481: t = gpbc();
482: if (LOOK_AHEAD(t, ecommt)) {
483: for (p = ecommt; *p; p++)
484: chrsave(*p);
485: break;
486: }
487: if (t == EOF)
488: break;
1.48 espie 489: CHRSAVE(t);
1.22 espie 490: }
491: } else
1.48 espie 492: CHRSAVE(t); /* stack the char */
1.1 deraadt 493: break;
494: }
495: }
496: }
497:
1.79 marco 498: /*
499: * output string directly, without pushing it for reparses.
1.24 espie 500: */
501: void
1.53 espie 502: outputstr(const char *s)
1.24 espie 503: {
504: if (sp < 0)
1.54 espie 505: reallyoutputstr(s);
1.24 espie 506: else
507: while (*s)
1.48 espie 508: CHRSAVE(*s++);
1.24 espie 509: }
510:
1.54 espie 511: void
512: reallyoutputstr(const char *s)
513: {
514: if (synch_lines) {
515: while (*s) {
516: fputc(*s, active);
517: if (*s++ == '\n') {
518: infile[ilevel].synch_lineno++;
1.79 marco 519: if (infile[ilevel].synch_lineno !=
1.54 espie 520: infile[ilevel].lineno)
521: do_emit_synchline();
522: }
523: }
524: } else
525: fputs(s, active);
526: }
527:
528: void
529: reallyputchar(int c)
530: {
531: putc(c, active);
532: if (synch_lines && c == '\n') {
533: infile[ilevel].synch_lineno++;
534: if (infile[ilevel].synch_lineno != infile[ilevel].lineno)
535: do_emit_synchline();
536: }
537: }
538:
1.1 deraadt 539: /*
540: * build an input token..
1.79 marco 541: * consider only those starting with _ or A-Za-z.
1.1 deraadt 542: */
1.18 espie 543: static ndptr
1.79 marco 544: inspect(int c, char *tp)
1.1 deraadt 545: {
1.17 espie 546: char *name = tp;
547: char *etp = tp+MAXTOK;
548: ndptr p;
1.79 marco 549:
1.59 espie 550: *tp++ = c;
1.1 deraadt 551:
552: while ((isalnum(c = gpbc()) || c == '_') && tp < etp)
1.59 espie 553: *tp++ = c;
1.51 espie 554: if (c != EOF)
1.68 espie 555: PUSHBACK(c);
1.1 deraadt 556: *tp = EOS;
1.33 espie 557: /* token is too long, it won't match anything, but it can still
558: * be output. */
559: if (tp == ep) {
560: outputstr(name);
561: while (isalnum(c = gpbc()) || c == '_') {
562: if (sp < 0)
1.54 espie 563: reallyputchar(c);
1.33 espie 564: else
1.48 espie 565: CHRSAVE(c);
1.33 espie 566: }
567: *name = EOS;
1.59 espie 568: return NULL;
1.33 espie 569: }
1.1 deraadt 570:
1.63 espie 571: p = ohash_find(¯os, ohash_qlookupi(¯os, name, (const char **)&tp));
1.61 espie 572: if (p == NULL)
573: return NULL;
574: if (macro_getdef(p) == NULL)
575: return NULL;
576: return p;
1.1 deraadt 577: }
578:
579: /*
1.79 marco 580: * initkwds - initialise m4 keywords as fast as possible.
1.1 deraadt 581: * This very similar to install, but without certain overheads,
1.79 marco 582: * such as calling lookup. Malloc is not used for storing the
1.17 espie 583: * keyword strings, since we simply use the static pointers
1.1 deraadt 584: * within keywrds block.
585: */
1.18 espie 586: static void
1.56 deraadt 587: initkwds(void)
1.17 espie 588: {
1.59 espie 589: unsigned int type;
590: int i;
1.1 deraadt 591:
592: for (i = 0; i < MAXKEYS; i++) {
1.59 espie 593: type = keywrds[i].ktyp & TYPEMASK;
1.24 espie 594: if ((keywrds[i].ktyp & NOARGS) == 0)
1.59 espie 595: type |= NEEDARGS;
596: setup_builtin(keywrds[i].knam, type);
1.1 deraadt 597: }
1.45 espie 598: }
1.17 espie 599:
1.27 espie 600: static void
1.53 espie 601: record(struct position *t, int lev)
1.27 espie 602: {
603: if (lev < MAXRECORD) {
604: t[lev].name = CURRENT_NAME;
605: t[lev].line = CURRENT_LINE;
606: }
607: }
608:
609: static void
1.53 espie 610: dump_stack(struct position *t, int lev)
1.27 espie 611: {
612: int i;
613:
614: for (i = 0; i < lev; i++) {
615: if (i == MAXRECORD) {
616: fprintf(stderr, " ...\n");
617: break;
618: }
1.79 marco 619: fprintf(stderr, " %s at line %lu\n",
1.27 espie 620: t[i].name, t[i].line);
621: }
1.34 espie 622: }
623:
624:
1.79 marco 625: static void
1.56 deraadt 626: enlarge_stack(void)
1.34 espie 627: {
1.64 espie 628: STACKMAX += STACKMAX/2;
1.79 marco 629: mstack = xrealloc(mstack, sizeof(stae) * STACKMAX,
630: "Evaluation stack overflow (%lu)",
1.64 espie 631: (unsigned long)STACKMAX);
632: sstack = xrealloc(sstack, STACKMAX,
1.79 marco 633: "Evaluation stack overflow (%lu)",
1.64 espie 634: (unsigned long)STACKMAX);
1.27 espie 635: }
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