Annotation of src/usr.bin/awk/FIXES, Revision 1.30
1.30 ! millert 1: /* $OpenBSD: FIXES,v 1.29 2020/06/10 21:03:56 millert Exp $ */
1.1 tholo 2: /****************************************************************
1.6 kstailey 3: Copyright (C) Lucent Technologies 1997
1.1 tholo 4: All Rights Reserved
5:
6: Permission to use, copy, modify, and distribute this software and
7: its documentation for any purpose and without fee is hereby
8: granted, provided that the above copyright notice appear in all
9: copies and that both that the copyright notice and this
10: permission notice and warranty disclaimer appear in supporting
1.6 kstailey 11: documentation, and that the name Lucent Technologies or any of
12: its entities not be used in advertising or publicity pertaining
13: to distribution of the software without specific, written prior
14: permission.
15:
16: LUCENT DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
17: INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS.
18: IN NO EVENT SHALL LUCENT OR ANY OF ITS ENTITIES BE LIABLE FOR ANY
19: SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
20: WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER
21: IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
22: ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF
23: THIS SOFTWARE.
1.1 tholo 24: ****************************************************************/
25:
26: This file lists all bug fixes, changes, etc., made since the AWK book
27: was sent to the printers in August, 1987.
1.30 ! millert 28:
! 29: January 5, 2020:
! 30: Fix a bug in the concatentation of two string constants into
! 31: one done in the grammar. Fixes GitHub issue #61. Thanks
! 32: to GitHub user awkfan77 for pointing out the direction for
! 33: the fix. New test T.concat added to the test suite.
! 34: Fix a few memory leaks reported by valgrind, as well.
! 35:
! 36: December 27, 2019:
! 37: Fix a bug whereby a{0,3} could match four a's. Thanks to
! 38: "Anonymous AWK fan" for the report.
! 39:
! 40: December 11, 2019:
! 41: Further printf-related fixes for 32 bit systems.
! 42: Thanks again to Christos Zoulas.
! 43:
! 44: December 8, 2019:
! 45: Fix the return value of sprintf("%d") on 32 bit systems.
! 46: Thanks to Jim Lowe for the report and to Christos Zoulas
! 47: for the fix.
1.29 millert 48:
49: November 10, 2019:
50: Convert a number of Boolean integer variables into
51: actual bools. Convert compile_time variable into an
52: enum and simplify some of the related code. Thanks
53: to Arnold Robbins.
54:
55: November 8, 2019:
56: Fix from Ori Bernstein to get UTF-8 characters instead of
57: bytes when FS = "". This is currently the only bit of
58: the One True Awk that understands multibyte characters.
59: From Arnold Robbins, apply some cleanups in the test suite.
1.28 millert 60:
61: October 25, 2019:
62: More fixes and cleanups from NetBSD, courtesy of Christos
63: Zoulas. Merges PRs 54 and 55.
64:
65: October 24, 2019:
66: Import second round of code cleanups from NetBSD. Much thanks
67: to Christos Zoulas (Github user zoulasc). Merges PR 53.
68: Add an optimization for string concatenation, also from
69: Christos.
1.27 millert 70:
71: October 17, 2019:
72: Import code cleanups from NetBSD. Much thanks to Christos
73: Zoulas (Github user zoulasc). Merges PR 51.
1.26 millert 74:
75: October 6, 2019:
76: Import code from NetBSD awk that implements RS as a regular
77: expression.
1.23 millert 78:
1.25 millert 79: September 10, 2019:
80: Fixes for various array / memory overruns found via gcc's
81: -fsanitize=unknown. Thanks to Alexander Richardson (Github
82: user arichardson). Merges PRs 47 and 48.
83:
84: July 28, 2019:
85: Import grammar optimization from NetBSD: Two string constants
86: concatenated together get turned into a single string.
87:
88: July 26, 2019:
89: Support POSIX-specified C-style escape sequences "\a" (alarm)
90: and "\v" (vertical tab) in command line arguments and regular
91: expressions, further to the support for them in strings added on
92: Apr 9, 1989. These now no longer match as literal "a" and "v"
93: characters (as they don't on other awk implementations).
94: Thanks to Martijn Dekker.
95:
96: July 17, 2019:
97: Pull in a number of code cleanups and minor fixes from
98: Warner Losh's bsd-ota branch. The only user visible change
99: is the use of random(3) as the random number generator.
100: Thanks to Warner Losh for collecting all these fixes in
101: one easy place to get them from.
102:
103: July 16, 2019:
104: Fix field splitting to use FS value as of the time a record
105: was read or assigned to. Thanks to GitHub user Cody Mello (melloc)
106: for the fix. (Merged from his branch, via PR #42.) Updated
107: testdir/T.split per said PR as well.
108:
109: June 24, 2019:
110: Extract awktest.tar into testdir directory. Add some very
111: simple mechanics to the makefile for running the tests and
112: for cleaning up. No changes to awk itself.
113:
1.24 millert 114: June 17, 2019:
115: Disallow deleting SYMTAB and its elements, which creates
116: use-after-free bugs. Thanks to GitHub user Cody Mello (melloc)
117: for the fix. (Merged from PR #43.)
118:
119: June 5, 2019:
120: Allow unmatched right parenthesis in a regular expression to
121: be treated literally. Fixes Issue #40. Thanks to GitHub user
122: Warner Losh (bsdimp) for the report. Thanks to Arnold Robbins
123: for the fix.
124:
125: May 29,2019:
126: Fix check for command line arguments to no longer require that
127: first character after '=' not be another '='. Reverts change of
128: August 11, 1989. Thanks to GitHub user Jamie Landeg Jones for
129: pointing out the issue; from Issue #38.
130:
131: Apr 7, 2019:
132: Update awktest.tar(p.50) to use modern options to sort. Needed
133: for Android development. Thanks to GitHub user mohd-akram (Mohamed
134: Akram). From Issue #33.
135:
136: Mar 12, 2019:
137: Added very simplistic support for cross-compiling in the
138: makefile. We are NOT going to go in the direction of the
139: autotools, though. Thanks to GitHub user nee-san for
140: the basic change. (Merged from PR #34.)
141:
1.23 millert 142: Mar 5, 2019:
143: Added support for POSIX-standard interval expressions (a.k.a.
144: bounds, a.k.a. repetition expressions) in regular expressions,
145: backported (via NetBSD) from Apple awk-24 (20070501).
146: Thanks to Martijn Dekker <martijn@inlv.org> for the port.
147: (Merged from PR #30.)
148:
149: Mar 3, 2019:
150: Merge PRs as follows:
151: #12: Avoid undefined behaviour when using ctype(3) functions in
152: relex(). Thanks to GitHub user iamleot.
153: #31: Make getline handle numeric strings, and update FIXES. Thanks
1.24 millert 154: to GitHub user arnoldrobbins.
1.23 millert 155: #32: maketab: support build systems with read-only source. Thanks
156: to GitHub user enh.
1.22 millert 157:
158: Jan 25, 2019:
159: Make getline handle numeric strings properly in all cases.
160: (Thanks, Arnold.)
161:
162: Jan 21, 2019:
163: Merged a number of small fixes from GitHub pull requests.
164: Thanks to GitHub users Arnold Robbins (arnoldrobbins),
165: Cody Mello (melloc) and Christoph Junghans (junghans).
166: PR numbers: 13-21, 23, 24, 27.
1.21 millert 167:
168: Oct 25, 2018:
169: Added test in maketab.c to prevent generating a proctab entry
170: for YYSTYPE_IS_DEFINED. It was harmless but some gcc settings
171: generated a warning message. Thanks to Nan Xiao for report.
1.20 millert 172:
173: Aug 27, 2018:
174: Disallow '$' in printf formats; arguments evaluated in order
175: and printed in order.
176:
177: Added some casts to silence warnings on debugging printfs.
178: (Thanks, Arnold.)
1.18 millert 179:
1.19 millert 180: Aug 23, 2018:
181: A long list of fixes courtesy of Arnold Robbins,
182: to whom profound thanks.
183:
184: 1. ofs-rebuild: OFS value used to rebuild the record was incorrect.
185: Fixed August 19, 2014. Revised fix August 2018.
186:
187: 2. system-status: Instead of a floating-point division by 256, use
188: the wait(2) macros to create a reasonable exit status.
189: Fixed March 12, 2016.
190:
191: 3. space: Use provided xisblank() function instead of ispace() for
192: matching [[:blank:]].
193:
194: 4. a-format: Add POSIX standard %a and %A to supported formats. Check
195: at runtime that this format is available.
196:
197: 5. decr-NF: Decrementing NF did not change $0. This is a decades-old
198: bug. There are interactions with the old and new value of OFS as well.
199: Most of the fix came from the NetBSD awk.
200:
201: 6. string-conv: String conversions of scalars were sticky. Once a
202: conversion to string happened, even with OFMT, that value was used until
203: a new numeric value was assigned, even if OFMT differed from CONVFMT,
204: and also if CONVFMT changed.
205:
206: 7. unary-plus: Unary plus on a string constant returned the string.
207: Instead, it should convert the value to numeric and give that value.
208:
209: Also added Arnold's tests for these to awktest.tar as T.arnold.
210:
211: Aug 15, 2018:
212: fixed mangled awktest.tar (thanks, Arnold), posted all
213: current (very minor) fixes to github / onetrueawk
214:
1.18 millert 215: Jun 7, 2018:
216: (yes, a long layoff)
217: Updated some broken tests (beebe.tar, T.lilly)
218: [thanks to Arnold Robbins]
219:
220: Mar 26, 2015:
221: buffer overflow in error reporting; thanks to tobias ulmer
222: and john-mark gurney for spotting it and the fix.
223:
224: Feb 4, 2013:
225: cleaned up a handful of tests that didn't seem to actually
226: test for correct behavior: T.latin1, T.gawk.
227:
228: Jan 5, 2013:
229: added ,NULL initializer to static Cells in run.c; not really
230: needed but cleaner. Thanks to Michael Bombardieri.
1.17 millert 231:
232: Dec 20, 2012:
233: fiddled makefile to get correct yacc and bison flags. pick yacc
234: (linux) or bison (mac) as necessary.
235:
236: added __attribute__((__noreturn__)) to a couple of lines in
237: proto.h, to silence someone's enthusiastic checker.
238:
239: fixed obscure call by value bug in split(a[1],a) reported on
240: 9fans. the management of temporary values is just a mess; i
241: took a shortcut by making an extra string copy. thanks
242: to paul patience and arnold robbins for passing it on and for
243: proposed patches.
244:
245: tiny fiddle in setfval to eliminate -0 results in T.expr, which
246: has irritated me for 20+ years.
1.16 millert 247:
248: Aug 10, 2011:
249: another fix to avoid core dump with delete(ARGV); again, many thanks
250: to ruslan ermilov.
251:
252: Aug 7, 2011:
253: split(s, a, //) now behaves the same as split(s, a, "")
254:
255: Jun 12, 2011:
256: /pat/, \n /pat/ {...} is now legal, though bad style to use.
257:
258: added checks to new -v code that permits -vnospace; thanks to
1.25 millert 259: ruslan ermilov for spotting this and providing the patch.
1.16 millert 260:
261: removed fixed limit on number of open files; thanks to aleksey
1.25 millert 262: cheusov and christos zoulos.
1.16 millert 263:
264: fixed day 1 bug that resurrected deleted elements of ARGV when
265: used as filenames (in lib.c).
266:
267: minor type fiddles to make gcc -Wall -pedantic happier (but not
268: totally so); turned on -fno-strict-aliasing in makefile.
269:
270: May 6, 2011:
271: added #ifdef for isblank.
272: now allows -ffoo as well as -f foo arguments.
273: (thanks, ruslan)
274:
275: May 1, 2011:
276: after advice from todd miller, kevin lo, ruslan ermilov,
277: and arnold robbins, changed srand() to return the previous
278: seed (which is 1 on the first call of srand). the seed is
279: an Awkfloat internally though converted to unsigned int to
1.25 millert 280: pass to the library srand(). thanks, everyone.
1.16 millert 281:
282: fixed a subtle (and i hope low-probability) overflow error
1.25 millert 283: in fldbld, by adding space for one extra \0. thanks to
1.16 millert 284: robert bassett for spotting this one and providing a fix.
285:
286: removed the files related to compilation on windows. i no
287: longer have anything like a current windows environment, so
288: i can't test any of it.
1.15 millert 289:
290: May 23, 2010:
291: fixed long-standing overflow bug in run.c; many thanks to
292: nelson beebe for spotting it and providing the fix.
293:
294: fixed bug that didn't parse -vd=1 properly; thanks to santiago
295: vila for spotting it.
296:
297: Feb 8, 2010:
298: i give up. replaced isblank with isspace in b.c; there are
299: no consistent header files.
300:
301: Nov 26, 2009:
302: fixed a long-standing issue with when FS takes effect. a
303: change to FS is now noticed immediately for subsequent splits.
304:
305: changed the name getline() to awkgetline() to avoid yet another
306: name conflict somewhere.
307:
308: Feb 11, 2009:
309: temporarily for now defined HAS_ISBLANK, since that seems to
310: be the best way through the thicket. isblank arrived in C99,
311: but seems to be arriving at different systems at different
312: times.
313:
314: Oct 8, 2008:
315: fixed typo in b.c that set tmpvec wrongly. no one had ever
316: run into the problem, apparently. thanks to alistair crooks.
1.14 millert 317:
318: Oct 23, 2007:
319: minor fix in lib.c: increase inputFS to 100, change malloc
1.25 millert 320: for fields to n+1.
1.14 millert 321:
322: fixed memory fault caused by out of order test in setsval.
323:
324: thanks to david o'brien, freebsd, for both fixes.
325:
326: May 1, 2007:
327: fiddle in makefile to fix for BSD make; thanks to igor sobrado.
328:
329: Mar 31, 2007:
330: fixed some null pointer refs calling adjbuf.
331:
332: Feb 21, 2007:
333: fixed a bug in matching the null RE in sub and gsub. thanks to al aho
334: who actually did the fix (in b.c), and to wolfgang seeberg for finding
335: it and providing a very compact test case.
336:
337: fixed quotation in b.c; thanks to Hal Pratt and the Princeton Dante
338: Project.
339:
340: removed some no-effect asserts in run.c.
341:
342: fiddled maketab.c to not complain about bison-generated values.
343:
344: removed the obsolete -V argument; fixed --version to print the
345: version and exit.
346:
347: fixed wording and an outright error in the usage message; thanks to igor
348: sobrado and jason mcintyre.
349:
350: fixed a bug in -d that caused core dump if no program followed.
351:
352: Jan 1, 2007:
353: dropped mac.code from makefile; there are few non-MacOSX
354: mac's these days.
355:
356: Jan 17, 2006:
357: system() not flagged as unsafe in the unadvertised -safe option.
358: found it while enhancing tests before shipping the ;login: article.
359: practice what you preach.
360:
361: removed the 9-years-obsolete -mr and -mf flags.
362:
363: added -version and --version options.
364:
365: core dump on linux with BEGIN {nextfile}, now fixed.
366:
1.25 millert 367: removed some #ifdef's in run.c and lex.c that appear to no
1.14 millert 368: longer be necessary.
369:
370: Apr 24, 2005:
371: modified lib.c so that values of $0 et al are preserved in the END
372: block, apparently as required by posix. thanks to havard eidnes
373: for the report and code.
374:
375: Jan 14, 2005:
376: fixed infinite loop in parsing, originally found by brian tsang.
377: thanks to arnold robbins for a suggestion that started me
378: rethinking it.
379:
380: Dec 31, 2004:
1.25 millert 381: prevent overflow of -f array in main, head off potential error in
382: call of SYNTAX(), test malloc return in lib.c, all with thanks to
1.14 millert 383: todd miller.
1.13 millert 384:
385: Dec 22, 2004:
386: cranked up size of NCHARS; coverity thinks it can be overrun with
387: smaller size, and i think that's right. added some assertions to b.c
388: to catch places where it might overrun. the RE code is still fragile.
389:
390: Dec 5, 2004:
391: fixed a couple of overflow problems with ridiculous field numbers:
392: e.g., print $(2^32-1). thanks to ruslan ermilov, giorgos keramidas
393: and david o'brien at freebsd.org for patches. this really should
394: be re-done from scratch.
395:
396: Nov 21, 2004:
397: fixed another 25-year-old RE bug, in split. it's another failure
398: to (re-)initialize. thanks to steve fisher for spotting this and
399: providing a good test case.
400:
401: Nov 22, 2003:
402: fixed a bug in regular expressions that dates (so help me) from 1977;
403: it's been there from the beginning. an anchored longest match that
404: was longer than the number of states triggered a failure to initialize
405: the machine properly. many thanks to moinak ghosh for not only finding
406: this one but for providing a fix, in some of the most mysterious
407: code known to man.
408:
409: fixed a storage leak in call() that appears to have been there since
1.25 millert 410: 1983 or so -- a function without an explicit return that assigns a
411: string to a parameter leaked a Cell. thanks to moinak ghosh for
1.13 millert 412: spotting this very subtle one.
413:
414: Jul 31, 2003:
415: fixed, thanks to andrey chernov and ruslan ermilov, a bug in lex.c
416: that mis-handled the character 255 in input. (it was being compared
417: to EOF with a signed comparison.)
418:
419: Jul 29, 2003:
420: fixed (i think) the long-standing botch that included the beginning of
421: line state ^ for RE's in the set of valid characters; this led to a
422: variety of odd problems, including failure to properly match certain
423: regular expressions in non-US locales. thanks to ruslan for keeping
424: at this one.
425:
426: Jul 28, 2003:
427: n-th try at getting internationalization right, with thanks to volker
428: kiefel, arnold robbins and ruslan ermilov for advice, though they
429: should not be blamed for the outcome. according to posix, "." is the
430: radix character in programs and command line arguments regardless of
431: the locale; otherwise, the locale should prevail for input and output
432: of numbers. so it's intended to work that way.
1.25 millert 433:
1.13 millert 434: i have rescinded the attempt to use strcoll in expanding shorthands in
435: regular expressions (cclenter). its properties are much too
436: surprising; for example [a-c] matches aAbBc in locale en_US but abBcC
437: in locale fr_CA. i can see how this might arise by implementation
438: but i cannot explain it to a human user. (this behavior can be seen
439: in gawk as well; we're leaning on the same library.)
440:
441: the issue appears to be that strcoll is meant for sorting, where
442: merging upper and lower case may make sense (though note that unix
443: sort does not do this by default either). it is not appropriate
444: for regular expressions, where the goal is to match specific
445: patterns of characters. in any case, the notations [:lower:], etc.,
446: are available in awk, and they are more likely to work correctly in
447: most locales.
448:
449: a moratorium is hereby declared on internationalization changes.
450: i apologize to friends and colleagues in other parts of the world.
451: i would truly like to get this "right", but i don't know what
452: that is, and i do not want to keep making changes until it's clear.
453:
454: Jul 4, 2003:
455: fixed bug that permitted non-terminated RE, as in "awk /x".
456:
457: Jun 1, 2003:
458: subtle change to split: if source is empty, number of elems
459: is always 0 and the array is not set.
460:
461: Mar 21, 2003:
462: added some parens to isblank, in another attempt to make things
463: internationally portable.
464:
465: Mar 14, 2003:
466: the internationalization changes, somewhat modified, are now
467: reinstated. in theory awk will now do character comparisons
468: and case conversions in national language, but "." will always
469: be the decimal point separator on input and output regardless
470: of national language. isblank(){} has an #ifndef.
471:
472: this no longer compiles on windows: LC_MESSAGES isn't defined
473: in vc6++.
474:
475: fixed subtle behavior in field and record splitting: if FS is
476: a single character and RS is not empty, \n is NOT a separator.
477: this tortuous reading is found in the awk book; behavior now
478: matches gawk and mawk.
1.11 millert 479:
480: Dec 13, 2002:
481: for the moment, the internationalization changes of nov 29 are
482: rolled back -- programs like x = 1.2 don't work in some locales,
483: because the parser is expecting x = 1,2. until i understand this
484: better, this will have to wait.
485:
486: Nov 29, 2002:
487: modified b.c (with tiny changes in main and run) to support
488: locales, using strcoll and iswhatever tests for posix character
489: classes. thanks to ruslan ermilov (ru@freebsd.org) for code.
490: the function isblank doesn't seem to have propagated to any
491: header file near me, so it's there explicitly. not properly
492: tested on non-ascii character sets by me.
493:
494: Jun 28, 2002:
495: modified run/format() and tran/getsval() to do a slightly better
496: job on using OFMT for output from print and CONVFMT for other
1.25 millert 497: number->string conversions, as promised by posix and done by
1.11 millert 498: gawk and mawk. there are still places where it doesn't work
499: right if CONVFMT is changed; by then the STR attribute of the
500: variable has been irrevocably set. thanks to arnold robbins for
501: code and examples.
502:
503: fixed subtle bug in format that could get core dump. thanks to
504: Jaromir Dolecek <jdolecek@NetBSD.org> for finding and fixing.
505: minor cleanup in run.c / format() at the same time.
506:
507: added some tests for null pointers to debugging printf's, which
508: were never intended for external consumption. thanks to dave
509: kerns (dkerns@lucent.com) for pointing this out.
510:
511: GNU compatibility: an empty regexp matches anything (thanks to
512: dag-erling smorgrav, des@ofug.org). subject to reversion if
513: this does more harm than good.
514:
515: pervasive small changes to make things more const-correct, as
516: reported by gcc's -Wwrite-strings. as it says in the gcc manual,
517: this may be more nuisance than useful. provoked by a suggestion
518: and code from arnaud desitter, arnaud@nimbus.geog.ox.ac.uk
519:
520: minor documentation changes to note that this now compiles out
521: of the box on Mac OS X.
522:
523: Feb 10, 2002:
524: changed types in posix chars structure to quiet solaris cc.
525:
526: Jan 1, 2002:
527: fflush() or fflush("") flushes all files and pipes.
528:
1.25 millert 529: length(arrayname) returns number of elements; thanks to
1.11 millert 530: arnold robbins for suggestion.
531:
532: added a makefile.win to make it easier to build on windows.
533: based on dan allen's buildwin.bat.
534:
535: Nov 16, 2001:
536: added support for posix character class names like [:digit:],
537: which are not exactly shorter than [0-9] and perhaps no more
538: portable. thanks to dag-erling smorgrav for code.
539:
540: Feb 16, 2001:
541: removed -m option; no longer needed, and it was actually
542: broken (noted thanks to volker kiefel).
543:
544: Feb 10, 2001:
545: fixed an appalling bug in gettok: any sequence of digits, +,-, E, e,
546: and period was accepted as a valid number if it started with a period.
547: this would never have happened with the lex version.
548:
549: other 1-character botches, now fixed, include a bare $ and a
550: bare " at the end of the input.
551:
552: Feb 7, 2001:
553: more (const char *) casts in b.c and tran.c to silence warnings.
1.8 millert 554:
1.10 millert 555: Nov 15, 2000:
556: fixed a bug introduced in august 1997 that caused expressions
557: like $f[1] to be syntax errors. thanks to arnold robbins for
558: noticing this and providing a fix.
559:
560: Oct 30, 2000:
561: fixed some nextfile bugs: not handling all cases. thanks to
562: arnold robbins for pointing this out. new regressions added.
563:
564: close() is now a function. it returns whatever the library
565: fclose returns, and -1 for closing a file or pipe that wasn't
566: opened.
567:
568: Sep 24, 2000:
569: permit \n explicitly in character classes; won't work right
570: if comes in as "[\n]" but ok as /[\n]/, because of multiple
571: processing of \'s. thanks to arnold robbins.
572:
573: July 5, 2000:
574: minor fiddles in tran.c to keep compilers happy about uschar.
575: thanks to norman wilson.
576:
577: May 25, 2000:
578: yet another attempt at making 8-bit input work, with another
1.25 millert 579: band-aid in b.c (member()), and some (uschar) casts to head
1.10 millert 580: off potential errors in subscripts (like isdigit). also
581: changed HAT to NCHARS-2. thanks again to santiago vila.
582:
583: changed maketab.c to ignore apparently out of range definitions
584: instead of halting; new freeBSD generates one. thanks to
585: jon snader <jsnader@ix.netcom.com> for pointing out the problem.
586:
587: May 2, 2000:
588: fixed an 8-bit problem in b.c by making several char*'s into
589: unsigned char*'s. not clear i have them all yet. thanks to
590: Santiago Vila <sanvila@unex.es> for the bug report.
591:
592: Apr 21, 2000:
593: finally found and fixed a memory leak in function call; it's
594: been there since functions were added ~1983. thanks to
595: jon bentley for the test case that found it.
596:
597: added test in envinit to catch environment "variables" with
1.12 otto 598: names beginning with '='; thanks to Berend Hasselman.
1.10 millert 599:
600: Jul 28, 1999:
601: added test in defn() to catch function foo(foo), which
602: otherwise recurses until core dump. thanks to arnold
603: robbins for noticing this.
604:
1.9 millert 605: Jun 20, 1999:
606: added *bp in gettok in lex.c; appears possible to exit function
607: without terminating the string. thanks to russ cox.
608:
609: Jun 2, 1999:
610: added function stdinit() to run to initialize files[] array,
611: in case stdin, etc., are not constants; some compilers care.
612:
613: May 10, 1999:
614: replaced the ERROR ... FATAL, etc., macros with functions
615: based on vprintf, to avoid problems caused by overrunning
616: fixed-size errbuf array. thanks to ralph corderoy for the
617: impetus, and for pointing out a string termination bug in
618: qstring as well.
619:
620: Apr 21, 1999:
621: fixed bug that caused occasional core dumps with commandline
622: variable with value ending in \. (thanks to nelson beebe for
623: the test case.)
624:
1.8 millert 625: Apr 16, 1999:
1.25 millert 626: with code kindly provided by Bruce Lilly, awk now parses
1.8 millert 627: /=/ and similar constructs more sensibly in more places.
1.10 millert 628: Bruce also provided some helpful test cases.
1.8 millert 629:
630: Apr 5, 1999:
631: changed true/false to True/False in run.c to make it
632: easier to compile with C++. Added some casts on malloc
633: and realloc to be honest about casts; ditto. changed
634: ltype int to long in struct rrow to reduce some 64-bit
635: complaints; other changes scattered throughout for the
636: same purpose. thanks to Nelson Beebe for these portability
637: improvements.
638:
639: removed some horrible pointer-int casting in b.c and elsewhere
640: by adding ptoi and itonp to localize the casts, which are
641: all benign. fixed one incipient bug that showed up on sgi
642: in 64-bit mode.
643:
644: reset lineno for new source file; include filename in error
645: message. also fixed line number error in continuation lines.
646: (thanks to Nelson Beebe for both of these.)
647:
648: Mar 24, 1999:
649: Nelson Beebe notes that irix 5.3 yacc dies with a bogus
650: error; use a newer version or switch to bison, since sgi
651: is unlikely to fix it.
1.1 tholo 652:
1.7 millert 653: Mar 5, 1999:
1.9 millert 654: changed isnumber to is_number to avoid the problem caused by
655: versions of ctype.h that include the name isnumber.
1.7 millert 656:
657: distribution now includes a script for building on a Mac,
658: thanks to Dan Allen.
659:
660: Feb 20, 1999:
661: fixed memory leaks in run.c (call) and tran.c (setfval).
662: thanks to Stephen Nutt for finding these and providing the fixes.
663:
664: Jan 13, 1999:
665: replaced srand argument by (unsigned int) in run.c;
666: avoids problem on Mac and potentially on Unix & Windows.
667: thanks to Dan Allen.
668:
669: added a few (int) casts to silence useless compiler warnings.
670: e.g., errorflag= in run.c jump().
671:
672: added proctab.c to the bundle outout; one less thing
673: to have to compile out of the box.
674:
675: added calls to _popen and _pclose to the win95 stub for
676: pipes (thanks to Steve Adams for this helpful suggestion).
677: seems to work, though properties are not well understood
678: by me, and it appears that under some circumstances the
679: pipe output is truncated. Be careful.
680:
681: Oct 19, 1998:
682: fixed a couple of bugs in getrec: could fail to update $0
1.25 millert 683: after a getline var; because inputFS wasn't initialized,
1.7 millert 684: could split $0 on every character, a misleading diversion.
685:
686: fixed caching bug in makedfa: LRU was actually removing
687: least often used.
688:
689: thanks to ross ridge for finding these, and for providing
690: great bug reports.
691:
692: May 12, 1998:
693: fixed potential bug in readrec: might fail to update record
694: pointer after growing. thanks to dan levy for spotting this
695: and suggesting the fix.
696:
697: Mar 12, 1998:
698: added -V to print version number and die.
1.19 millert 699:
700: [notify dave kerns, dkerns@dacsoup.ih.lucent.com]
1.7 millert 701:
702: Feb 11, 1998:
703: subtle silent bug in lex.c: if the program ended with a number
704: longer than 1 digit, part of the input would be pushed back and
705: parsed again because token buffer wasn't terminated right.
706: example: awk 'length($0) > 10'. blush. at least i found it
707: myself.
708:
709: Aug 31, 1997:
710: s/adelete/awkdelete/: SGI uses this in malloc.h.
711: thanks to nelson beebe for pointing this one out.
712:
713: Aug 21, 1997:
714: fixed some bugs in sub and gsub when replacement includes \\.
715: this is a dark, horrible corner, but at least now i believe that
716: the behavior is the same as gawk and the intended posix standard.
717: thanks to arnold robbins for advice here.
718:
719: Aug 9, 1997:
720: somewhat regretfully, replaced the ancient lex-based lexical
721: analyzer with one written in C. it's longer, generates less code,
722: and more portable; the old one depended too much on mysterious
723: properties of lex that were not preserved in other environments.
724: in theory these recognize the same language.
725:
726: now using strtod to test whether a string is a number, instead of
727: the convoluted original function. should be more portable and
728: reliable if strtod is implemented right.
729:
730: removed now-pointless optimization in makefile that tries to avoid
731: recompilation when awkgram.y is changed but symbols are not.
732:
733: removed most fixed-size arrays, though a handful remain, some
734: of which are unchecked. you have been warned.
735:
736: Aug 4, 1997:
737: with some trepidation, replaced the ancient code that managed
738: fields and $0 in fixed-size arrays with arrays that grow on
739: demand. there is still some tension between trying to make this
740: run fast and making it clean; not sure it's right yet.
741:
742: the ill-conceived -mr and -mf arguments are now useful only
743: for debugging. previous dynamic string code removed.
744:
745: numerous other minor cleanups along the way.
1.1 tholo 746:
1.7 millert 747: Jul 30, 1997:
748: using code provided by dan levy (to whom profuse thanks), replaced
749: fixed-size arrays and awkward kludges by a fairly uniform mechanism
750: to grow arrays as needed for printf, sub, gsub, etc.
1.1 tholo 751:
1.7 millert 752: Jul 23, 1997:
753: falling off the end of a function returns "" and 0, not 0.
754: thanks to arnold robbins.
1.1 tholo 755:
1.7 millert 756: Jun 17, 1997:
757: replaced several fixed-size arrays by dynamically-created ones
758: in run.c; added overflow tests to some previously unchecked cases.
759: getline, toupper, tolower.
1.1 tholo 760:
1.7 millert 761: getline code is still broken in that recursive calls may wind
762: up using the same space. [fixed later]
1.1 tholo 763:
1.7 millert 764: increased RECSIZE to 8192 to push problems further over the horizon.
1.1 tholo 765:
1.7 millert 766: added \r to \n as input line separator for programs, not data.
767: damn CRLFs.
1.1 tholo 768:
1.7 millert 769: modified format() to permit explicit printf("%c", 0) to include
770: a null byte in output. thanks to ken stailey for the fix.
1.1 tholo 771:
1.7 millert 772: added a "-safe" argument that disables file output (print >,
773: print >>), process creation (cmd|getline, print |, system), and
774: access to the environment (ENVIRON). this is a first approximation
775: to a "safe" version of awk, but don't rely on it too much. thanks
776: to joan feigenbaum and matt blaze for the inspiration long ago.
1.1 tholo 777:
1.7 millert 778: Jul 8, 1996:
779: fixed long-standing bug in sub, gsub(/a/, "\\\\&"); thanks to
780: ralph corderoy.
1.1 tholo 781:
1.7 millert 782: Jun 29, 1996:
783: fixed awful bug in new field splitting; didn't get all the places
784: where input was done.
1.1 tholo 785:
1.7 millert 786: Jun 28, 1996:
787: changed field-splitting to conform to posix definition: fields are
788: split using the value of FS at the time of input; it used to be
789: the value when the field or NF was first referred to, a much less
790: predictable definition. thanks to arnold robbins for encouragement
791: to do the right thing.
1.1 tholo 792:
1.7 millert 793: May 28, 1996:
794: fixed appalling but apparently unimportant bug in parsing octal
795: numbers in reg exprs.
1.1 tholo 796:
1.7 millert 797: explicit hex in reg exprs now limited to 2 chars: \xa, \xaa.
1.1 tholo 798:
1.7 millert 799: May 27, 1996:
800: cleaned up some declarations so gcc -Wall is now almost silent.
1.1 tholo 801:
1.7 millert 802: makefile now includes backup copies of ytab.c and lexyy.c in case
803: one makes before looking; it also avoids recreating lexyy.c unless
804: really needed.
1.1 tholo 805:
1.7 millert 806: s/aprintf/awkprint, s/asprintf/awksprintf/ to avoid some name clashes
807: with unwisely-written header files.
1.1 tholo 808:
1.7 millert 809: thanks to jeffrey friedl for several of these.
1.1 tholo 810:
1.7 millert 811: May 26, 1996:
812: an attempt to rationalize the (unsigned) char issue. almost all
813: instances of unsigned char have been removed; the handful of places
814: in b.c where chars are used as table indices have been hand-crafted.
815: added some latin-1 tests to the regression, but i'm not confident;
816: none of my compilers seem to care much. thanks to nelson beebe for
817: pointing out some others that do care.
1.1 tholo 818:
1.7 millert 819: May 2, 1996:
820: removed all register declarations.
1.1 tholo 821:
1.7 millert 822: enhanced split(), as in gawk, etc: split(s, a, "") splits s into
823: a[1]...a[length(s)] with each character a single element.
1.1 tholo 824:
1.7 millert 825: made the same changes for field-splitting if FS is "".
1.1 tholo 826:
1.7 millert 827: added nextfile, as in gawk: causes immediate advance to next
828: input file. (thanks to arnold robbins for inspiration and code).
1.1 tholo 829:
1.7 millert 830: small fixes to regexpr code: can now handle []], [[], and
1.25 millert 831: variants; [] is now a syntax error, rather than matching
1.7 millert 832: everything; [z-a] is now empty, not z. far from complete
833: or correct, however. (thanks to jeffrey friedl for pointing out
834: some awful behaviors.)
1.1 tholo 835:
1.7 millert 836: Apr 29, 1996:
1.12 otto 837: replaced uchar by uschar everywhere; apparently some compilers
1.7 millert 838: usurp this name and this causes conflicts.
1.1 tholo 839:
1.7 millert 840: fixed call to time in run.c (bltin); arg is time_t *.
1.1 tholo 841:
1.7 millert 842: replaced horrible pointer/long punning in b.c by a legitimate
843: union. should be safer on 64-bit machines and cleaner everywhere.
844: (thanks to nelson beebe for pointing out some of these problems.)
1.1 tholo 845:
1.7 millert 846: replaced nested comments by #if 0...#endif in run.c, lib.c.
1.1 tholo 847:
1.7 millert 848: removed getsval, setsval, execute macros from run.c and lib.c.
849: machines are 100x faster than they were when these macros were
850: first used.
1.1 tholo 851:
1.7 millert 852: revised filenames: awk.g.y => awkgram.y, awk.lx.l => awklex.l,
853: y.tab.[ch] => ytab.[ch], lex.yy.c => lexyy.c, all in the aid of
854: portability to nameless systems.
1.1 tholo 855:
1.7 millert 856: "make bundle" now includes yacc and lex output files for recipients
857: who don't have yacc or lex.
1.1 tholo 858:
1.7 millert 859: Aug 15, 1995:
860: initialized Cells in setsymtab more carefully; some fields
861: were not set. (thanks to purify, all of whose complaints i
862: think i now understand.)
1.1 tholo 863:
1.7 millert 864: fixed at least one error in gsub that looked at -1-th element
865: of an array when substituting for a null match (e.g., $).
1.1 tholo 866:
1.7 millert 867: delete arrayname is now legal; it clears the elements but leaves
868: the array, which may not be the right behavior.
1.1 tholo 869:
1.7 millert 870: modified makefile: my current make can't cope with the test used
871: to avoid unnecessary yacc invocations.
1.1 tholo 872:
1.7 millert 873: Jul 17, 1995:
874: added dynamically growing strings to awk.lx.l and b.c
875: to permit regular expressions to be much bigger.
876: the state arrays can still overflow.
1.1 tholo 877:
1.7 millert 878: Aug 24, 1994:
879: detect duplicate arguments in function definitions (mdm).
1.1 tholo 880:
1.7 millert 881: May 11, 1994:
882: trivial fix to printf to limit string size in sub().
1.1 tholo 883:
1.7 millert 884: Apr 22, 1994:
885: fixed yet another subtle self-assignment problem:
886: $1 = $2; $1 = $1 clobbered $1.
1.1 tholo 887:
1.7 millert 888: Regression tests now use private echo, to avoid quoting problems.
1.1 tholo 889:
1.7 millert 890: Feb 2, 1994:
891: changed error() to print line number as %d, not %g.
1.1 tholo 892:
1.7 millert 893: Jul 23, 1993:
894: cosmetic changes: increased sizes of some arrays,
895: reworded some error messages.
1.1 tholo 896:
1.7 millert 897: added CONVFMT as in posix (just replaced OFMT in getsval)
1.1 tholo 898:
1.7 millert 899: FILENAME is now "" until the first thing that causes a file
900: to be opened.
1.1 tholo 901:
1.7 millert 902: Nov 28, 1992:
903: deleted yyunput and yyoutput from proto.h;
904: different versions of lex give these different declarations.
1.1 tholo 905:
1.7 millert 906: May 31, 1992:
907: added -mr N and -mf N options: more record and fields.
908: these really ought to adjust automatically.
1.1 tholo 909:
1.7 millert 910: cleaned up some error messages; "out of space" now means
911: malloc returned NULL in all cases.
1.1 tholo 912:
1.7 millert 913: changed rehash so that if it runs out, it just returns;
914: things will continue to run slow, but maybe a bit longer.
1.1 tholo 915:
1.7 millert 916: Apr 24, 1992:
917: remove redundant close of stdin when using -f -.
1.1 tholo 918:
1.7 millert 919: got rid of core dump with -d; awk -d just prints date.
1.1 tholo 920:
1.7 millert 921: Apr 12, 1992:
922: added explicit check for /dev/std(in,out,err) in redirection.
923: unlike gawk, no /dev/fd/n yet.
1.1 tholo 924:
1.7 millert 925: added (file/pipe) builtin. hard to test satisfactorily.
926: not posix.
1.1 tholo 927:
1.7 millert 928: Feb 20, 1992:
929: recompile after abortive changes; should be unchanged.
1.1 tholo 930:
1.7 millert 931: Dec 2, 1991:
932: die-casting time: converted to ansi C, installed that.
1.1 tholo 933:
1.7 millert 934: Nov 30, 1991:
935: fixed storage leak in freefa, failing to recover [N]CCL.
936: thanks to Bill Jones (jones@cs.usask.ca)
1.1 tholo 937:
1.7 millert 938: Nov 19, 1991:
939: use RAND_MAX instead of literal in builtin().
1.1 tholo 940:
1.7 millert 941: Nov 12, 1991:
942: cranked up some fixed-size arrays in b.c, and added a test for
943: overflow in penter. thanks to mark larsen.
1.1 tholo 944:
1.7 millert 945: Sep 24, 1991:
946: increased buffer in gsub. a very crude fix to a general problem.
947: and again on Sep 26.
1.1 tholo 948:
1.7 millert 949: Aug 18, 1991:
950: enforce variable name syntax for commandline variables: has to
951: start with letter or _.
1.1 tholo 952:
1.7 millert 953: Jul 27, 1991:
954: allow newline after ; in for statements.
1.1 tholo 955:
1.7 millert 956: Jul 21, 1991:
957: fixed so that in self-assignment like $1=$1, side effects
958: like recomputing $0 take place. (this is getting subtle.)
1.1 tholo 959:
1.7 millert 960: Jun 30, 1991:
961: better test for detecting too-long output record.
1.1 tholo 962:
1.7 millert 963: Jun 2, 1991:
964: better defense against very long printf strings.
965: made break and continue illegal outside of loops.
1.1 tholo 966:
1.7 millert 967: May 13, 1991:
968: removed extra arg on gettemp, tempfree. minor error message rewording.
1.1 tholo 969:
970: May 6, 1991:
971: fixed silly bug in hex parsing in hexstr().
972: removed an apparently unnecessary test in isnumber().
973: warn about weird printf conversions.
974: fixed unchecked array overwrite in relex().
975:
976: changed for (i in array) to access elements in sorted order.
977: then unchanged it -- it really does run slower in too many cases.
978: left the code in place, commented out.
979:
1.7 millert 980: Feb 10, 1991:
981: check error status on all writes, to avoid banging on full disks.
1.1 tholo 982:
1.7 millert 983: Jan 28, 1991:
984: awk -f - reads the program from stdin.
1.1 tholo 985:
1.7 millert 986: Jan 11, 1991:
987: failed to set numeric state on $0 in cmd|getline context in run.c.
1.1 tholo 988:
1.7 millert 989: Nov 2, 1990:
990: fixed sleazy test for integrality in getsval; use modf.
1.1 tholo 991:
1.7 millert 992: Oct 29, 1990:
993: fixed sleazy buggy code in lib.c that looked (incorrectly) for
994: too long input lines.
1.1 tholo 995:
1.7 millert 996: Oct 14, 1990:
997: fixed the bug on p. 198 in which it couldn't deduce that an
998: argument was an array in some contexts. replaced the error
999: message in intest() by code that damn well makes it an array.
1.1 tholo 1000:
1.7 millert 1001: Oct 8, 1990:
1002: fixed horrible bug: types and values were not preserved in
1003: some kinds of self-assignment. (in assign().)
1.1 tholo 1004:
1.7 millert 1005: Aug 24, 1990:
1006: changed NCHARS to 256 to handle 8-bit characters in strings
1007: presented to match(), etc.
1.1 tholo 1008:
1.7 millert 1009: Jun 26, 1990:
1010: changed struct rrow (awk.h) to use long instead of int for lval,
1011: since cfoll() stores a pointer in it. now works better when int's
1012: are smaller than pointers!
1.1 tholo 1013:
1.7 millert 1014: May 6, 1990:
1015: AVA fixed the grammar so that ! is uniformly of the same precedence as
1016: unary + and -. This renders illegal some constructs like !x=y, which
1017: now has to be parenthesized as !(x=y), and makes others work properly:
1018: !x+y is (!x)+y, and x!y is x !y, not two pattern-action statements.
1019: (These problems were pointed out by Bob Lenk of Posix.)
1.1 tholo 1020:
1.7 millert 1021: Added \x to regular expressions (already in strings).
1022: Limited octal to octal digits; \8 and \9 are not octal.
1023: Centralized the code for parsing escapes in regular expressions.
1024: Added a bunch of tests to T.re and T.sub to verify some of this.
1.1 tholo 1025:
1.7 millert 1026: Feb 9, 1990:
1027: fixed null pointer dereference bug in main.c: -F[nothing]. sigh.
1.1 tholo 1028:
1.7 millert 1029: restored srand behavior: it returns the current seed.
1.1 tholo 1030:
1.7 millert 1031: Jan 18, 1990:
1032: srand now returns previous seed value (0 to start).
1.1 tholo 1033:
1.7 millert 1034: Jan 5, 1990:
1035: fix potential problem in tran.c -- something was freed,
1036: then used in freesymtab.
1.1 tholo 1037:
1.7 millert 1038: Oct 18, 1989:
1039: another try to get the max number of open files set with
1040: relatively machine-independent code.
1.1 tholo 1041:
1.7 millert 1042: small fix to input() in case of multiple reads after EOF.
1.1 tholo 1043:
1.7 millert 1044: Oct 11, 1989:
1045: FILENAME is now defined in the BEGIN block -- too many old
1046: programs broke.
1.1 tholo 1047:
1.7 millert 1048: "-" means stdin in getline as well as on the commandline.
1.1 tholo 1049:
1.7 millert 1050: added a bunch of casts to the code to tell the truth about
1051: char * vs. unsigned char *, a right royal pain. added a
1052: setlocale call to the front of main, though probably no one
1053: has it usefully implemented yet.
1.1 tholo 1054:
1.7 millert 1055: Aug 24, 1989:
1056: removed redundant relational tests against nullnode if parse
1057: tree already had a relational at that point.
1.1 tholo 1058:
1.7 millert 1059: Aug 11, 1989:
1060: fixed bug: commandline variable assignment has to look like
1061: var=something. (consider the man page for =, in file =.1)
1.1 tholo 1062:
1.7 millert 1063: changed number of arguments to functions to static arrays
1064: to avoid repeated malloc calls.
1.1 tholo 1065:
1.7 millert 1066: Aug 2, 1989:
1067: restored -F (space) separator
1.1 tholo 1068:
1.7 millert 1069: Jul 30, 1989:
1070: added -v x=1 y=2 ... for immediate commandline variable assignment;
1071: done before the BEGIN block for sure. they have to precede the
1072: program if the program is on the commandline.
1073: Modified Aug 2 to require a separate -v for each assignment.
1.1 tholo 1074:
1.7 millert 1075: Jul 10, 1989:
1076: fixed ref-thru-zero bug in environment code in tran.c
1.1 tholo 1077:
1.7 millert 1078: Jun 23, 1989:
1079: add newline to usage message.
1.1 tholo 1080:
1.7 millert 1081: Jun 14, 1989:
1082: added some missing ansi printf conversion letters: %i %X %E %G.
1083: no sensible meaning for h or L, so they may not do what one expects.
1.1 tholo 1084:
1.7 millert 1085: made %* conversions work.
1.1 tholo 1086:
1.7 millert 1087: changed x^y so that if n is a positive integer, it's done
1088: by explicit multiplication, thus achieving maximum accuracy.
1089: (this should be done by pow() but it seems not to be locally.)
1090: done to x ^= y as well.
1.1 tholo 1091:
1.7 millert 1092: Jun 4, 1989:
1093: ENVIRON array contains environment: if shell variable V=thing,
1094: ENVIRON["V"] is "thing"
1.1 tholo 1095:
1.7 millert 1096: multiple -f arguments permitted. error reporting is naive.
1097: (they were permitted before, but only the last was used.)
1.1 tholo 1098:
1.7 millert 1099: fixed a really stupid botch in the debugging macro dprintf
1.1 tholo 1100:
1.7 millert 1101: fixed order of evaluation of commandline assignments to match
1102: what the book claims: an argument of the form x=e is evaluated
1103: at the time it would have been opened if it were a filename (p 63).
1104: this invalidates the suggested answer to ex 4-1 (p 195).
1.1 tholo 1105:
1.7 millert 1106: removed some code that permitted -F (space) fieldseparator,
1107: since it didn't quite work right anyway. (restored aug 2)
1.1 tholo 1108:
1.7 millert 1109: Apr 27, 1989:
1110: Line number now accumulated correctly for comment lines.
1.1 tholo 1111:
1.7 millert 1112: Apr 26, 1989:
1113: Debugging output now includes a version date,
1114: if one compiles it into the source each time.
1.1 tholo 1115:
1.7 millert 1116: Apr 9, 1989:
1117: Changed grammar to prohibit constants as 3rd arg of sub and gsub;
1118: prevents class of overwriting-a-constant errors. (Last one?)
1119: This invalidates the "banana" example on page 43 of the book.
1.1 tholo 1120:
1.7 millert 1121: Added \a ("alert"), \v (vertical tab), \xhhh (hexadecimal),
1122: as in ANSI, for strings. Rescinded the sloppiness that permitted
1123: non-octal digits in \ooo. Warning: not all compilers and libraries
1124: will be able to deal with \x correctly.
1.1 tholo 1125:
1.7 millert 1126: Jan 9, 1989:
1127: Fixed bug that caused tempcell list to contain a duplicate.
1128: The fix is kludgy.
1.1 tholo 1129:
1.7 millert 1130: Dec 17, 1988:
1131: Catches some more commandline errors in main.
1132: Removed redundant decl of modf in run.c (confuses some compilers).
1133: Warning: there's no single declaration of malloc, etc., in awk.h
1134: that seems to satisfy all compilers.
1.1 tholo 1135:
1.7 millert 1136: Dec 7, 1988:
1137: Added a bit of code to error printing to avoid printing nulls.
1138: (Not clear that it actually would.)
1.1 tholo 1139:
1.7 millert 1140: Nov 27, 1988:
1141: With fear and trembling, modified the grammar to permit
1142: multiple pattern-action statements on one line without
1143: an explicit separator. By definition, this capitulation
1144: to the ghost of ancient implementations remains undefined
1145: and thus subject to change without notice or apology.
1146: DO NOT COUNT ON IT.
1.1 tholo 1147:
1.7 millert 1148: Oct 30, 1988:
1149: Fixed bug in call() that failed to recover storage.
1.1 tholo 1150:
1.7 millert 1151: A warning is now generated if there are more arguments
1152: in the call than in the definition (in lieu of fixing
1153: another storage leak).
1.2 millert 1154:
1.7 millert 1155: Oct 20, 1988:
1156: Fixed %c: if expr is numeric, use numeric value;
1157: otherwise print 1st char of string value. still
1158: doesn't work if the value is 0 -- won't print \0.
1.2 millert 1159:
1.7 millert 1160: Added a few more checks for running out of malloc.
1.2 millert 1161:
1.7 millert 1162: Oct 12, 1988:
1163: Fixed bug in call() that freed local arrays twice.
1.5 kstailey 1164:
1.7 millert 1165: Fixed to handle deletion of non-existent array right;
1166: complains about attempt to delete non-array element.
1.6 kstailey 1167:
1.7 millert 1168: Sep 30, 1988:
1169: Now guarantees to evaluate all arguments of built-in
1170: functions, as in C; the appearance is that arguments
1171: are evaluated before the function is called. Places
1172: affected are sub (gsub was ok), substr, printf, and
1173: all the built-in arithmetic functions in bltin().
1174: A warning is generated if a bltin() is called with
1175: the wrong number of arguments.
1.6 kstailey 1176:
1.7 millert 1177: This requires changing makeprof on p167 of the book.
1.6 kstailey 1178:
1.7 millert 1179: Aug 23, 1988:
1180: setting FILENAME in BEGIN caused core dump, apparently
1181: because it was freeing space not allocated by malloc.
1.6 kstailey 1182:
1.7 millert 1183: July 24, 1988:
1184: fixed egregious error in toupper/tolower functions.
1185: still subject to rescinding, however.
1.6 kstailey 1186:
1.7 millert 1187: July 2, 1988:
1188: flush stdout before opening file or pipe
1.6 kstailey 1189:
1.7 millert 1190: July 2, 1988:
1191: performance bug in b.c/cgoto(): not freeing some sets of states.
1192: partial fix only right now, and the number of states increased
1193: to make it less obvious.
1.6 kstailey 1194:
1.7 millert 1195: June 1, 1988:
1196: check error status on close
1.6 kstailey 1197:
1.7 millert 1198: May 28, 1988:
1199: srand returns seed value it's using.
1200: see 1/18/90
1.6 kstailey 1201:
1.7 millert 1202: May 22, 1988:
1203: Removed limit on depth of function calls.
1.6 kstailey 1204:
1.7 millert 1205: May 10, 1988:
1206: Fixed lib.c to permit _ in commandline variable names.
1.6 kstailey 1207:
1.7 millert 1208: Mar 25, 1988:
1209: main.c fixed to recognize -- as terminator of command-
1210: line options. Illegal options flagged.
1211: Error reporting slightly cleaned up.
1.6 kstailey 1212:
1.7 millert 1213: Dec 2, 1987:
1214: Newer C compilers apply a strict scope rule to extern
1215: declarations within functions. Two extern declarations in
1216: lib.c and tran.c have been moved to obviate this problem.
1.6 kstailey 1217:
1.7 millert 1218: Oct xx, 1987:
1219: Reluctantly added toupper and tolower functions.
1220: Subject to rescinding without notice.
1.6 kstailey 1221:
1.7 millert 1222: Sep 17, 1987:
1223: Error-message printer had printf(s) instead of
1224: printf("%s",s); got core dumps when the message
1225: included a %.
1.6 kstailey 1226:
1.7 millert 1227: Sep 12, 1987:
1228: Very long printf strings caused core dump;
1229: fixed aprintf, asprintf, format to catch them.
1230: Can still get a core dump in printf itself.
1.6 kstailey 1231:
1232: