Annotation of src/usr.bin/awk/FIXES, Revision 1.35
1.35 ! millert 1: /* $OpenBSD: FIXES,v 1.34 2020/06/26 15:50:06 millert Exp $ */
1.1 tholo 2: /****************************************************************
1.6 kstailey 3: Copyright (C) Lucent Technologies 1997
1.1 tholo 4: All Rights Reserved
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7: its documentation for any purpose and without fee is hereby
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1.6 kstailey 11: documentation, and that the name Lucent Technologies or any of
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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.
1.35 ! millert 28:
! 29: June 25, 2020:
! 30: Merge PRs 82 and 84. The latter fixes issue #83. Thanks to
! 31: Todd Miller and awkfan77.
1.34 millert 32:
33: June 12, 2020:
34: Clear errno before calling errcheck to avoid any spurious errors
35: left over from previous calls that may have set it. Thanks to
36: Todd Miller for the fix, from PR #80.
37:
38: Fix Issue #78 by allowing \r to follow floating point numbers in
39: lib.c:is_number. Thanks to GitHub user ajcarr for the report
40: and to Arnold Robbins for the fix.
1.33 millert 41:
42: June 5, 2020:
43: In fldbld(), make sure that inputFS is set before trying to
44: use it. Thanks to Steffen Nurpmeso <steffen@sdaoden.eu>
45: for the report.
46:
47: May 5, 2020:
48: Fix checks for compilers that can handle noreturn. Thanks to
49: GitHub user enh-google for pointing it out. Closes Issue #79.
50:
51: April 16, 2020:
52: Handle old compilers that don't support C11 (for noreturn).
53: Thanks to Arnold Robbins.
54:
55: April 5, 2020:
56: Use <stdnoreturn.h> and noreturn instead of GCC attributes.
57: Thanks to GitHub user awkfan77. Closes PR #77.
1.30 millert 58:
1.32 millert 59: February 28, 2020:
60: More cleanups from Christos Zoulas: notably backslash continuation
61: inside strings removes the newline and a fix for RS = "^a".
62: Fix for address sanitizer-found problem. Thanks to GitHub user
63: enh-google.
64:
65: February 19, 2020:
66: More small cleanups from Christos Zoulas.
67:
68: February 18, 2020:
69: Additional cleanups from Christos Zoulas. It's no longer necessary
70: to use the -y flag to bison.
71:
72: February 6, 2020:
73: Additional small cleanups from Christos Zoulas. awk is now
74: a little more robust about reporting I/O errors upon exit.
75:
1.31 millert 76: January 31, 2020:
77: Merge PR #70, which avoids use of variable length arrays. Thanks
78: to GitHub user michaelforney. Fix issue #60 ({0} in interval
1.32 millert 79: expressions doesn't work). Also get all tests working again.
80: Thanks to Arnold Robbins.
1.31 millert 81:
82: January 24, 2020:
83: A number of small cleanups from Christos Zoulas. Add the close
84: on exec flag to files/pipes opened for redirection; courtesy of
85: Arnold Robbins.
86:
87: January 19, 2020:
88: If POSIXLY_CORRECT is set in the environment, then sub and gsub
89: use POSIX rules for multiple backslashes. This fixes Issue #66,
90: while maintaining backwards compatibility.
91:
92: January 9, 2020:
93: Input/output errors on closing files are now fatal instead of
94: mere warnings. Thanks to Martijn Dekker <martijn@inlv.org>.
95:
1.30 millert 96: January 5, 2020:
97: Fix a bug in the concatentation of two string constants into
98: one done in the grammar. Fixes GitHub issue #61. Thanks
99: to GitHub user awkfan77 for pointing out the direction for
100: the fix. New test T.concat added to the test suite.
101: Fix a few memory leaks reported by valgrind, as well.
102:
103: December 27, 2019:
104: Fix a bug whereby a{0,3} could match four a's. Thanks to
105: "Anonymous AWK fan" for the report.
106:
107: December 11, 2019:
108: Further printf-related fixes for 32 bit systems.
109: Thanks again to Christos Zoulas.
110:
111: December 8, 2019:
112: Fix the return value of sprintf("%d") on 32 bit systems.
113: Thanks to Jim Lowe for the report and to Christos Zoulas
114: for the fix.
1.29 millert 115:
116: November 10, 2019:
117: Convert a number of Boolean integer variables into
118: actual bools. Convert compile_time variable into an
119: enum and simplify some of the related code. Thanks
120: to Arnold Robbins.
121:
122: November 8, 2019:
123: Fix from Ori Bernstein to get UTF-8 characters instead of
124: bytes when FS = "". This is currently the only bit of
125: the One True Awk that understands multibyte characters.
126: From Arnold Robbins, apply some cleanups in the test suite.
1.28 millert 127:
128: October 25, 2019:
129: More fixes and cleanups from NetBSD, courtesy of Christos
130: Zoulas. Merges PRs 54 and 55.
131:
132: October 24, 2019:
133: Import second round of code cleanups from NetBSD. Much thanks
1.31 millert 134: to Christos Zoulas (GitHub user zoulasc). Merges PR 53.
1.28 millert 135: Add an optimization for string concatenation, also from
136: Christos.
1.27 millert 137:
138: October 17, 2019:
139: Import code cleanups from NetBSD. Much thanks to Christos
1.31 millert 140: Zoulas (GitHub user zoulasc). Merges PR 51.
1.26 millert 141:
142: October 6, 2019:
143: Import code from NetBSD awk that implements RS as a regular
144: expression.
1.23 millert 145:
1.25 millert 146: September 10, 2019:
147: Fixes for various array / memory overruns found via gcc's
1.31 millert 148: -fsanitize=unknown. Thanks to Alexander Richardson (GitHub
1.25 millert 149: user arichardson). Merges PRs 47 and 48.
150:
151: July 28, 2019:
152: Import grammar optimization from NetBSD: Two string constants
153: concatenated together get turned into a single string.
154:
155: July 26, 2019:
156: Support POSIX-specified C-style escape sequences "\a" (alarm)
157: and "\v" (vertical tab) in command line arguments and regular
158: expressions, further to the support for them in strings added on
159: Apr 9, 1989. These now no longer match as literal "a" and "v"
160: characters (as they don't on other awk implementations).
161: Thanks to Martijn Dekker.
162:
163: July 17, 2019:
164: Pull in a number of code cleanups and minor fixes from
165: Warner Losh's bsd-ota branch. The only user visible change
166: is the use of random(3) as the random number generator.
167: Thanks to Warner Losh for collecting all these fixes in
168: one easy place to get them from.
169:
170: July 16, 2019:
171: Fix field splitting to use FS value as of the time a record
172: was read or assigned to. Thanks to GitHub user Cody Mello (melloc)
173: for the fix. (Merged from his branch, via PR #42.) Updated
174: testdir/T.split per said PR as well.
175:
176: June 24, 2019:
177: Extract awktest.tar into testdir directory. Add some very
178: simple mechanics to the makefile for running the tests and
179: for cleaning up. No changes to awk itself.
180:
1.24 millert 181: June 17, 2019:
182: Disallow deleting SYMTAB and its elements, which creates
183: use-after-free bugs. Thanks to GitHub user Cody Mello (melloc)
184: for the fix. (Merged from PR #43.)
185:
186: June 5, 2019:
187: Allow unmatched right parenthesis in a regular expression to
188: be treated literally. Fixes Issue #40. Thanks to GitHub user
189: Warner Losh (bsdimp) for the report. Thanks to Arnold Robbins
190: for the fix.
191:
192: May 29,2019:
193: Fix check for command line arguments to no longer require that
194: first character after '=' not be another '='. Reverts change of
195: August 11, 1989. Thanks to GitHub user Jamie Landeg Jones for
196: pointing out the issue; from Issue #38.
197:
198: Apr 7, 2019:
199: Update awktest.tar(p.50) to use modern options to sort. Needed
200: for Android development. Thanks to GitHub user mohd-akram (Mohamed
201: Akram). From Issue #33.
202:
203: Mar 12, 2019:
204: Added very simplistic support for cross-compiling in the
205: makefile. We are NOT going to go in the direction of the
206: autotools, though. Thanks to GitHub user nee-san for
207: the basic change. (Merged from PR #34.)
208:
1.23 millert 209: Mar 5, 2019:
210: Added support for POSIX-standard interval expressions (a.k.a.
211: bounds, a.k.a. repetition expressions) in regular expressions,
212: backported (via NetBSD) from Apple awk-24 (20070501).
213: Thanks to Martijn Dekker <martijn@inlv.org> for the port.
214: (Merged from PR #30.)
215:
216: Mar 3, 2019:
217: Merge PRs as follows:
218: #12: Avoid undefined behaviour when using ctype(3) functions in
219: relex(). Thanks to GitHub user iamleot.
220: #31: Make getline handle numeric strings, and update FIXES. Thanks
1.24 millert 221: to GitHub user arnoldrobbins.
1.23 millert 222: #32: maketab: support build systems with read-only source. Thanks
223: to GitHub user enh.
1.22 millert 224:
225: Jan 25, 2019:
226: Make getline handle numeric strings properly in all cases.
227: (Thanks, Arnold.)
228:
229: Jan 21, 2019:
230: Merged a number of small fixes from GitHub pull requests.
231: Thanks to GitHub users Arnold Robbins (arnoldrobbins),
232: Cody Mello (melloc) and Christoph Junghans (junghans).
233: PR numbers: 13-21, 23, 24, 27.
1.21 millert 234:
235: Oct 25, 2018:
236: Added test in maketab.c to prevent generating a proctab entry
237: for YYSTYPE_IS_DEFINED. It was harmless but some gcc settings
238: generated a warning message. Thanks to Nan Xiao for report.
1.20 millert 239:
240: Aug 27, 2018:
241: Disallow '$' in printf formats; arguments evaluated in order
242: and printed in order.
243:
244: Added some casts to silence warnings on debugging printfs.
245: (Thanks, Arnold.)
1.18 millert 246:
1.19 millert 247: Aug 23, 2018:
248: A long list of fixes courtesy of Arnold Robbins,
249: to whom profound thanks.
250:
251: 1. ofs-rebuild: OFS value used to rebuild the record was incorrect.
252: Fixed August 19, 2014. Revised fix August 2018.
253:
254: 2. system-status: Instead of a floating-point division by 256, use
255: the wait(2) macros to create a reasonable exit status.
256: Fixed March 12, 2016.
257:
258: 3. space: Use provided xisblank() function instead of ispace() for
259: matching [[:blank:]].
260:
261: 4. a-format: Add POSIX standard %a and %A to supported formats. Check
262: at runtime that this format is available.
263:
264: 5. decr-NF: Decrementing NF did not change $0. This is a decades-old
265: bug. There are interactions with the old and new value of OFS as well.
266: Most of the fix came from the NetBSD awk.
267:
268: 6. string-conv: String conversions of scalars were sticky. Once a
269: conversion to string happened, even with OFMT, that value was used until
270: a new numeric value was assigned, even if OFMT differed from CONVFMT,
271: and also if CONVFMT changed.
272:
273: 7. unary-plus: Unary plus on a string constant returned the string.
274: Instead, it should convert the value to numeric and give that value.
275:
276: Also added Arnold's tests for these to awktest.tar as T.arnold.
277:
278: Aug 15, 2018:
279: fixed mangled awktest.tar (thanks, Arnold), posted all
280: current (very minor) fixes to github / onetrueawk
281:
1.18 millert 282: Jun 7, 2018:
283: (yes, a long layoff)
284: Updated some broken tests (beebe.tar, T.lilly)
285: [thanks to Arnold Robbins]
286:
287: Mar 26, 2015:
288: buffer overflow in error reporting; thanks to tobias ulmer
289: and john-mark gurney for spotting it and the fix.
290:
291: Feb 4, 2013:
292: cleaned up a handful of tests that didn't seem to actually
293: test for correct behavior: T.latin1, T.gawk.
294:
295: Jan 5, 2013:
296: added ,NULL initializer to static Cells in run.c; not really
297: needed but cleaner. Thanks to Michael Bombardieri.
1.17 millert 298:
299: Dec 20, 2012:
300: fiddled makefile to get correct yacc and bison flags. pick yacc
301: (linux) or bison (mac) as necessary.
302:
303: added __attribute__((__noreturn__)) to a couple of lines in
304: proto.h, to silence someone's enthusiastic checker.
305:
306: fixed obscure call by value bug in split(a[1],a) reported on
307: 9fans. the management of temporary values is just a mess; i
308: took a shortcut by making an extra string copy. thanks
309: to paul patience and arnold robbins for passing it on and for
310: proposed patches.
311:
312: tiny fiddle in setfval to eliminate -0 results in T.expr, which
313: has irritated me for 20+ years.
1.16 millert 314:
315: Aug 10, 2011:
316: another fix to avoid core dump with delete(ARGV); again, many thanks
317: to ruslan ermilov.
318:
319: Aug 7, 2011:
320: split(s, a, //) now behaves the same as split(s, a, "")
321:
322: Jun 12, 2011:
323: /pat/, \n /pat/ {...} is now legal, though bad style to use.
324:
325: added checks to new -v code that permits -vnospace; thanks to
1.25 millert 326: ruslan ermilov for spotting this and providing the patch.
1.16 millert 327:
328: removed fixed limit on number of open files; thanks to aleksey
1.25 millert 329: cheusov and christos zoulos.
1.16 millert 330:
331: fixed day 1 bug that resurrected deleted elements of ARGV when
332: used as filenames (in lib.c).
333:
334: minor type fiddles to make gcc -Wall -pedantic happier (but not
335: totally so); turned on -fno-strict-aliasing in makefile.
336:
337: May 6, 2011:
338: added #ifdef for isblank.
339: now allows -ffoo as well as -f foo arguments.
340: (thanks, ruslan)
341:
342: May 1, 2011:
343: after advice from todd miller, kevin lo, ruslan ermilov,
344: and arnold robbins, changed srand() to return the previous
345: seed (which is 1 on the first call of srand). the seed is
346: an Awkfloat internally though converted to unsigned int to
1.25 millert 347: pass to the library srand(). thanks, everyone.
1.16 millert 348:
349: fixed a subtle (and i hope low-probability) overflow error
1.25 millert 350: in fldbld, by adding space for one extra \0. thanks to
1.16 millert 351: robert bassett for spotting this one and providing a fix.
352:
353: removed the files related to compilation on windows. i no
354: longer have anything like a current windows environment, so
355: i can't test any of it.
1.15 millert 356:
357: May 23, 2010:
358: fixed long-standing overflow bug in run.c; many thanks to
359: nelson beebe for spotting it and providing the fix.
360:
361: fixed bug that didn't parse -vd=1 properly; thanks to santiago
362: vila for spotting it.
363:
364: Feb 8, 2010:
365: i give up. replaced isblank with isspace in b.c; there are
366: no consistent header files.
367:
368: Nov 26, 2009:
369: fixed a long-standing issue with when FS takes effect. a
370: change to FS is now noticed immediately for subsequent splits.
371:
372: changed the name getline() to awkgetline() to avoid yet another
373: name conflict somewhere.
374:
375: Feb 11, 2009:
376: temporarily for now defined HAS_ISBLANK, since that seems to
377: be the best way through the thicket. isblank arrived in C99,
378: but seems to be arriving at different systems at different
379: times.
380:
381: Oct 8, 2008:
382: fixed typo in b.c that set tmpvec wrongly. no one had ever
383: run into the problem, apparently. thanks to alistair crooks.
1.14 millert 384:
385: Oct 23, 2007:
386: minor fix in lib.c: increase inputFS to 100, change malloc
1.25 millert 387: for fields to n+1.
1.14 millert 388:
389: fixed memory fault caused by out of order test in setsval.
390:
391: thanks to david o'brien, freebsd, for both fixes.
392:
393: May 1, 2007:
394: fiddle in makefile to fix for BSD make; thanks to igor sobrado.
395:
396: Mar 31, 2007:
397: fixed some null pointer refs calling adjbuf.
398:
399: Feb 21, 2007:
400: fixed a bug in matching the null RE in sub and gsub. thanks to al aho
401: who actually did the fix (in b.c), and to wolfgang seeberg for finding
402: it and providing a very compact test case.
403:
404: fixed quotation in b.c; thanks to Hal Pratt and the Princeton Dante
405: Project.
406:
407: removed some no-effect asserts in run.c.
408:
409: fiddled maketab.c to not complain about bison-generated values.
410:
411: removed the obsolete -V argument; fixed --version to print the
412: version and exit.
413:
414: fixed wording and an outright error in the usage message; thanks to igor
415: sobrado and jason mcintyre.
416:
417: fixed a bug in -d that caused core dump if no program followed.
418:
419: Jan 1, 2007:
420: dropped mac.code from makefile; there are few non-MacOSX
421: mac's these days.
422:
423: Jan 17, 2006:
424: system() not flagged as unsafe in the unadvertised -safe option.
425: found it while enhancing tests before shipping the ;login: article.
426: practice what you preach.
427:
428: removed the 9-years-obsolete -mr and -mf flags.
429:
430: added -version and --version options.
431:
432: core dump on linux with BEGIN {nextfile}, now fixed.
433:
1.25 millert 434: removed some #ifdef's in run.c and lex.c that appear to no
1.14 millert 435: longer be necessary.
436:
437: Apr 24, 2005:
438: modified lib.c so that values of $0 et al are preserved in the END
439: block, apparently as required by posix. thanks to havard eidnes
440: for the report and code.
441:
442: Jan 14, 2005:
443: fixed infinite loop in parsing, originally found by brian tsang.
444: thanks to arnold robbins for a suggestion that started me
445: rethinking it.
446:
447: Dec 31, 2004:
1.25 millert 448: prevent overflow of -f array in main, head off potential error in
449: call of SYNTAX(), test malloc return in lib.c, all with thanks to
1.14 millert 450: todd miller.
1.13 millert 451:
452: Dec 22, 2004:
453: cranked up size of NCHARS; coverity thinks it can be overrun with
454: smaller size, and i think that's right. added some assertions to b.c
455: to catch places where it might overrun. the RE code is still fragile.
456:
457: Dec 5, 2004:
458: fixed a couple of overflow problems with ridiculous field numbers:
459: e.g., print $(2^32-1). thanks to ruslan ermilov, giorgos keramidas
460: and david o'brien at freebsd.org for patches. this really should
461: be re-done from scratch.
462:
463: Nov 21, 2004:
464: fixed another 25-year-old RE bug, in split. it's another failure
465: to (re-)initialize. thanks to steve fisher for spotting this and
466: providing a good test case.
467:
468: Nov 22, 2003:
469: fixed a bug in regular expressions that dates (so help me) from 1977;
470: it's been there from the beginning. an anchored longest match that
471: was longer than the number of states triggered a failure to initialize
472: the machine properly. many thanks to moinak ghosh for not only finding
473: this one but for providing a fix, in some of the most mysterious
474: code known to man.
475:
476: fixed a storage leak in call() that appears to have been there since
1.25 millert 477: 1983 or so -- a function without an explicit return that assigns a
478: string to a parameter leaked a Cell. thanks to moinak ghosh for
1.13 millert 479: spotting this very subtle one.
480:
481: Jul 31, 2003:
482: fixed, thanks to andrey chernov and ruslan ermilov, a bug in lex.c
483: that mis-handled the character 255 in input. (it was being compared
484: to EOF with a signed comparison.)
485:
486: Jul 29, 2003:
487: fixed (i think) the long-standing botch that included the beginning of
488: line state ^ for RE's in the set of valid characters; this led to a
489: variety of odd problems, including failure to properly match certain
490: regular expressions in non-US locales. thanks to ruslan for keeping
491: at this one.
492:
493: Jul 28, 2003:
494: n-th try at getting internationalization right, with thanks to volker
495: kiefel, arnold robbins and ruslan ermilov for advice, though they
496: should not be blamed for the outcome. according to posix, "." is the
497: radix character in programs and command line arguments regardless of
498: the locale; otherwise, the locale should prevail for input and output
499: of numbers. so it's intended to work that way.
1.25 millert 500:
1.13 millert 501: i have rescinded the attempt to use strcoll in expanding shorthands in
502: regular expressions (cclenter). its properties are much too
503: surprising; for example [a-c] matches aAbBc in locale en_US but abBcC
504: in locale fr_CA. i can see how this might arise by implementation
505: but i cannot explain it to a human user. (this behavior can be seen
506: in gawk as well; we're leaning on the same library.)
507:
508: the issue appears to be that strcoll is meant for sorting, where
509: merging upper and lower case may make sense (though note that unix
510: sort does not do this by default either). it is not appropriate
511: for regular expressions, where the goal is to match specific
512: patterns of characters. in any case, the notations [:lower:], etc.,
513: are available in awk, and they are more likely to work correctly in
514: most locales.
515:
516: a moratorium is hereby declared on internationalization changes.
517: i apologize to friends and colleagues in other parts of the world.
518: i would truly like to get this "right", but i don't know what
519: that is, and i do not want to keep making changes until it's clear.
520:
521: Jul 4, 2003:
522: fixed bug that permitted non-terminated RE, as in "awk /x".
523:
524: Jun 1, 2003:
525: subtle change to split: if source is empty, number of elems
526: is always 0 and the array is not set.
527:
528: Mar 21, 2003:
529: added some parens to isblank, in another attempt to make things
530: internationally portable.
531:
532: Mar 14, 2003:
533: the internationalization changes, somewhat modified, are now
534: reinstated. in theory awk will now do character comparisons
535: and case conversions in national language, but "." will always
536: be the decimal point separator on input and output regardless
537: of national language. isblank(){} has an #ifndef.
538:
539: this no longer compiles on windows: LC_MESSAGES isn't defined
540: in vc6++.
541:
542: fixed subtle behavior in field and record splitting: if FS is
543: a single character and RS is not empty, \n is NOT a separator.
544: this tortuous reading is found in the awk book; behavior now
545: matches gawk and mawk.
1.11 millert 546:
547: Dec 13, 2002:
548: for the moment, the internationalization changes of nov 29 are
549: rolled back -- programs like x = 1.2 don't work in some locales,
550: because the parser is expecting x = 1,2. until i understand this
551: better, this will have to wait.
552:
553: Nov 29, 2002:
554: modified b.c (with tiny changes in main and run) to support
555: locales, using strcoll and iswhatever tests for posix character
556: classes. thanks to ruslan ermilov (ru@freebsd.org) for code.
557: the function isblank doesn't seem to have propagated to any
558: header file near me, so it's there explicitly. not properly
559: tested on non-ascii character sets by me.
560:
561: Jun 28, 2002:
562: modified run/format() and tran/getsval() to do a slightly better
563: job on using OFMT for output from print and CONVFMT for other
1.25 millert 564: number->string conversions, as promised by posix and done by
1.11 millert 565: gawk and mawk. there are still places where it doesn't work
566: right if CONVFMT is changed; by then the STR attribute of the
567: variable has been irrevocably set. thanks to arnold robbins for
568: code and examples.
569:
570: fixed subtle bug in format that could get core dump. thanks to
571: Jaromir Dolecek <jdolecek@NetBSD.org> for finding and fixing.
572: minor cleanup in run.c / format() at the same time.
573:
574: added some tests for null pointers to debugging printf's, which
575: were never intended for external consumption. thanks to dave
576: kerns (dkerns@lucent.com) for pointing this out.
577:
578: GNU compatibility: an empty regexp matches anything (thanks to
579: dag-erling smorgrav, des@ofug.org). subject to reversion if
580: this does more harm than good.
581:
582: pervasive small changes to make things more const-correct, as
583: reported by gcc's -Wwrite-strings. as it says in the gcc manual,
584: this may be more nuisance than useful. provoked by a suggestion
585: and code from arnaud desitter, arnaud@nimbus.geog.ox.ac.uk
586:
587: minor documentation changes to note that this now compiles out
588: of the box on Mac OS X.
589:
590: Feb 10, 2002:
591: changed types in posix chars structure to quiet solaris cc.
592:
593: Jan 1, 2002:
594: fflush() or fflush("") flushes all files and pipes.
595:
1.25 millert 596: length(arrayname) returns number of elements; thanks to
1.11 millert 597: arnold robbins for suggestion.
598:
599: added a makefile.win to make it easier to build on windows.
600: based on dan allen's buildwin.bat.
601:
602: Nov 16, 2001:
603: added support for posix character class names like [:digit:],
604: which are not exactly shorter than [0-9] and perhaps no more
605: portable. thanks to dag-erling smorgrav for code.
606:
607: Feb 16, 2001:
608: removed -m option; no longer needed, and it was actually
609: broken (noted thanks to volker kiefel).
610:
611: Feb 10, 2001:
612: fixed an appalling bug in gettok: any sequence of digits, +,-, E, e,
613: and period was accepted as a valid number if it started with a period.
614: this would never have happened with the lex version.
615:
616: other 1-character botches, now fixed, include a bare $ and a
617: bare " at the end of the input.
618:
619: Feb 7, 2001:
620: more (const char *) casts in b.c and tran.c to silence warnings.
1.8 millert 621:
1.10 millert 622: Nov 15, 2000:
623: fixed a bug introduced in august 1997 that caused expressions
624: like $f[1] to be syntax errors. thanks to arnold robbins for
625: noticing this and providing a fix.
626:
627: Oct 30, 2000:
628: fixed some nextfile bugs: not handling all cases. thanks to
629: arnold robbins for pointing this out. new regressions added.
630:
631: close() is now a function. it returns whatever the library
632: fclose returns, and -1 for closing a file or pipe that wasn't
633: opened.
634:
635: Sep 24, 2000:
636: permit \n explicitly in character classes; won't work right
637: if comes in as "[\n]" but ok as /[\n]/, because of multiple
638: processing of \'s. thanks to arnold robbins.
639:
640: July 5, 2000:
641: minor fiddles in tran.c to keep compilers happy about uschar.
642: thanks to norman wilson.
643:
644: May 25, 2000:
645: yet another attempt at making 8-bit input work, with another
1.25 millert 646: band-aid in b.c (member()), and some (uschar) casts to head
1.10 millert 647: off potential errors in subscripts (like isdigit). also
648: changed HAT to NCHARS-2. thanks again to santiago vila.
649:
650: changed maketab.c to ignore apparently out of range definitions
651: instead of halting; new freeBSD generates one. thanks to
652: jon snader <jsnader@ix.netcom.com> for pointing out the problem.
653:
654: May 2, 2000:
655: fixed an 8-bit problem in b.c by making several char*'s into
656: unsigned char*'s. not clear i have them all yet. thanks to
657: Santiago Vila <sanvila@unex.es> for the bug report.
658:
659: Apr 21, 2000:
660: finally found and fixed a memory leak in function call; it's
661: been there since functions were added ~1983. thanks to
662: jon bentley for the test case that found it.
663:
664: added test in envinit to catch environment "variables" with
1.12 otto 665: names beginning with '='; thanks to Berend Hasselman.
1.10 millert 666:
667: Jul 28, 1999:
668: added test in defn() to catch function foo(foo), which
669: otherwise recurses until core dump. thanks to arnold
670: robbins for noticing this.
671:
1.9 millert 672: Jun 20, 1999:
673: added *bp in gettok in lex.c; appears possible to exit function
674: without terminating the string. thanks to russ cox.
675:
676: Jun 2, 1999:
677: added function stdinit() to run to initialize files[] array,
678: in case stdin, etc., are not constants; some compilers care.
679:
680: May 10, 1999:
681: replaced the ERROR ... FATAL, etc., macros with functions
682: based on vprintf, to avoid problems caused by overrunning
683: fixed-size errbuf array. thanks to ralph corderoy for the
684: impetus, and for pointing out a string termination bug in
685: qstring as well.
686:
687: Apr 21, 1999:
688: fixed bug that caused occasional core dumps with commandline
689: variable with value ending in \. (thanks to nelson beebe for
690: the test case.)
691:
1.8 millert 692: Apr 16, 1999:
1.25 millert 693: with code kindly provided by Bruce Lilly, awk now parses
1.8 millert 694: /=/ and similar constructs more sensibly in more places.
1.10 millert 695: Bruce also provided some helpful test cases.
1.8 millert 696:
697: Apr 5, 1999:
698: changed true/false to True/False in run.c to make it
699: easier to compile with C++. Added some casts on malloc
700: and realloc to be honest about casts; ditto. changed
701: ltype int to long in struct rrow to reduce some 64-bit
702: complaints; other changes scattered throughout for the
703: same purpose. thanks to Nelson Beebe for these portability
704: improvements.
705:
706: removed some horrible pointer-int casting in b.c and elsewhere
707: by adding ptoi and itonp to localize the casts, which are
708: all benign. fixed one incipient bug that showed up on sgi
709: in 64-bit mode.
710:
711: reset lineno for new source file; include filename in error
712: message. also fixed line number error in continuation lines.
713: (thanks to Nelson Beebe for both of these.)
714:
715: Mar 24, 1999:
716: Nelson Beebe notes that irix 5.3 yacc dies with a bogus
717: error; use a newer version or switch to bison, since sgi
718: is unlikely to fix it.
1.1 tholo 719:
1.7 millert 720: Mar 5, 1999:
1.9 millert 721: changed isnumber to is_number to avoid the problem caused by
722: versions of ctype.h that include the name isnumber.
1.7 millert 723:
724: distribution now includes a script for building on a Mac,
725: thanks to Dan Allen.
726:
727: Feb 20, 1999:
728: fixed memory leaks in run.c (call) and tran.c (setfval).
729: thanks to Stephen Nutt for finding these and providing the fixes.
730:
731: Jan 13, 1999:
732: replaced srand argument by (unsigned int) in run.c;
733: avoids problem on Mac and potentially on Unix & Windows.
734: thanks to Dan Allen.
735:
736: added a few (int) casts to silence useless compiler warnings.
737: e.g., errorflag= in run.c jump().
738:
739: added proctab.c to the bundle outout; one less thing
740: to have to compile out of the box.
741:
742: added calls to _popen and _pclose to the win95 stub for
743: pipes (thanks to Steve Adams for this helpful suggestion).
744: seems to work, though properties are not well understood
745: by me, and it appears that under some circumstances the
746: pipe output is truncated. Be careful.
747:
748: Oct 19, 1998:
749: fixed a couple of bugs in getrec: could fail to update $0
1.25 millert 750: after a getline var; because inputFS wasn't initialized,
1.7 millert 751: could split $0 on every character, a misleading diversion.
752:
753: fixed caching bug in makedfa: LRU was actually removing
754: least often used.
755:
756: thanks to ross ridge for finding these, and for providing
757: great bug reports.
758:
759: May 12, 1998:
760: fixed potential bug in readrec: might fail to update record
761: pointer after growing. thanks to dan levy for spotting this
762: and suggesting the fix.
763:
764: Mar 12, 1998:
765: added -V to print version number and die.
1.19 millert 766:
767: [notify dave kerns, dkerns@dacsoup.ih.lucent.com]
1.7 millert 768:
769: Feb 11, 1998:
770: subtle silent bug in lex.c: if the program ended with a number
771: longer than 1 digit, part of the input would be pushed back and
772: parsed again because token buffer wasn't terminated right.
773: example: awk 'length($0) > 10'. blush. at least i found it
774: myself.
775:
776: Aug 31, 1997:
777: s/adelete/awkdelete/: SGI uses this in malloc.h.
778: thanks to nelson beebe for pointing this one out.
779:
780: Aug 21, 1997:
781: fixed some bugs in sub and gsub when replacement includes \\.
782: this is a dark, horrible corner, but at least now i believe that
783: the behavior is the same as gawk and the intended posix standard.
784: thanks to arnold robbins for advice here.
785:
786: Aug 9, 1997:
787: somewhat regretfully, replaced the ancient lex-based lexical
788: analyzer with one written in C. it's longer, generates less code,
789: and more portable; the old one depended too much on mysterious
790: properties of lex that were not preserved in other environments.
791: in theory these recognize the same language.
792:
793: now using strtod to test whether a string is a number, instead of
794: the convoluted original function. should be more portable and
795: reliable if strtod is implemented right.
796:
797: removed now-pointless optimization in makefile that tries to avoid
798: recompilation when awkgram.y is changed but symbols are not.
799:
800: removed most fixed-size arrays, though a handful remain, some
801: of which are unchecked. you have been warned.
802:
803: Aug 4, 1997:
804: with some trepidation, replaced the ancient code that managed
805: fields and $0 in fixed-size arrays with arrays that grow on
806: demand. there is still some tension between trying to make this
807: run fast and making it clean; not sure it's right yet.
808:
809: the ill-conceived -mr and -mf arguments are now useful only
810: for debugging. previous dynamic string code removed.
811:
812: numerous other minor cleanups along the way.
1.1 tholo 813:
1.7 millert 814: Jul 30, 1997:
815: using code provided by dan levy (to whom profuse thanks), replaced
816: fixed-size arrays and awkward kludges by a fairly uniform mechanism
817: to grow arrays as needed for printf, sub, gsub, etc.
1.1 tholo 818:
1.7 millert 819: Jul 23, 1997:
820: falling off the end of a function returns "" and 0, not 0.
821: thanks to arnold robbins.
1.1 tholo 822:
1.7 millert 823: Jun 17, 1997:
824: replaced several fixed-size arrays by dynamically-created ones
825: in run.c; added overflow tests to some previously unchecked cases.
826: getline, toupper, tolower.
1.1 tholo 827:
1.7 millert 828: getline code is still broken in that recursive calls may wind
829: up using the same space. [fixed later]
1.1 tholo 830:
1.7 millert 831: increased RECSIZE to 8192 to push problems further over the horizon.
1.1 tholo 832:
1.7 millert 833: added \r to \n as input line separator for programs, not data.
834: damn CRLFs.
1.1 tholo 835:
1.7 millert 836: modified format() to permit explicit printf("%c", 0) to include
837: a null byte in output. thanks to ken stailey for the fix.
1.1 tholo 838:
1.7 millert 839: added a "-safe" argument that disables file output (print >,
840: print >>), process creation (cmd|getline, print |, system), and
841: access to the environment (ENVIRON). this is a first approximation
842: to a "safe" version of awk, but don't rely on it too much. thanks
843: to joan feigenbaum and matt blaze for the inspiration long ago.
1.1 tholo 844:
1.7 millert 845: Jul 8, 1996:
846: fixed long-standing bug in sub, gsub(/a/, "\\\\&"); thanks to
847: ralph corderoy.
1.1 tholo 848:
1.7 millert 849: Jun 29, 1996:
850: fixed awful bug in new field splitting; didn't get all the places
851: where input was done.
1.1 tholo 852:
1.7 millert 853: Jun 28, 1996:
854: changed field-splitting to conform to posix definition: fields are
855: split using the value of FS at the time of input; it used to be
856: the value when the field or NF was first referred to, a much less
857: predictable definition. thanks to arnold robbins for encouragement
858: to do the right thing.
1.1 tholo 859:
1.7 millert 860: May 28, 1996:
861: fixed appalling but apparently unimportant bug in parsing octal
862: numbers in reg exprs.
1.1 tholo 863:
1.7 millert 864: explicit hex in reg exprs now limited to 2 chars: \xa, \xaa.
1.1 tholo 865:
1.7 millert 866: May 27, 1996:
867: cleaned up some declarations so gcc -Wall is now almost silent.
1.1 tholo 868:
1.7 millert 869: makefile now includes backup copies of ytab.c and lexyy.c in case
870: one makes before looking; it also avoids recreating lexyy.c unless
871: really needed.
1.1 tholo 872:
1.7 millert 873: s/aprintf/awkprint, s/asprintf/awksprintf/ to avoid some name clashes
874: with unwisely-written header files.
1.1 tholo 875:
1.7 millert 876: thanks to jeffrey friedl for several of these.
1.1 tholo 877:
1.7 millert 878: May 26, 1996:
879: an attempt to rationalize the (unsigned) char issue. almost all
880: instances of unsigned char have been removed; the handful of places
881: in b.c where chars are used as table indices have been hand-crafted.
882: added some latin-1 tests to the regression, but i'm not confident;
883: none of my compilers seem to care much. thanks to nelson beebe for
884: pointing out some others that do care.
1.1 tholo 885:
1.7 millert 886: May 2, 1996:
887: removed all register declarations.
1.1 tholo 888:
1.7 millert 889: enhanced split(), as in gawk, etc: split(s, a, "") splits s into
890: a[1]...a[length(s)] with each character a single element.
1.1 tholo 891:
1.7 millert 892: made the same changes for field-splitting if FS is "".
1.1 tholo 893:
1.7 millert 894: added nextfile, as in gawk: causes immediate advance to next
895: input file. (thanks to arnold robbins for inspiration and code).
1.1 tholo 896:
1.7 millert 897: small fixes to regexpr code: can now handle []], [[], and
1.25 millert 898: variants; [] is now a syntax error, rather than matching
1.7 millert 899: everything; [z-a] is now empty, not z. far from complete
900: or correct, however. (thanks to jeffrey friedl for pointing out
901: some awful behaviors.)
1.1 tholo 902:
1.7 millert 903: Apr 29, 1996:
1.12 otto 904: replaced uchar by uschar everywhere; apparently some compilers
1.7 millert 905: usurp this name and this causes conflicts.
1.1 tholo 906:
1.7 millert 907: fixed call to time in run.c (bltin); arg is time_t *.
1.1 tholo 908:
1.7 millert 909: replaced horrible pointer/long punning in b.c by a legitimate
910: union. should be safer on 64-bit machines and cleaner everywhere.
911: (thanks to nelson beebe for pointing out some of these problems.)
1.1 tholo 912:
1.7 millert 913: replaced nested comments by #if 0...#endif in run.c, lib.c.
1.1 tholo 914:
1.7 millert 915: removed getsval, setsval, execute macros from run.c and lib.c.
916: machines are 100x faster than they were when these macros were
917: first used.
1.1 tholo 918:
1.7 millert 919: revised filenames: awk.g.y => awkgram.y, awk.lx.l => awklex.l,
920: y.tab.[ch] => ytab.[ch], lex.yy.c => lexyy.c, all in the aid of
921: portability to nameless systems.
1.1 tholo 922:
1.7 millert 923: "make bundle" now includes yacc and lex output files for recipients
924: who don't have yacc or lex.
1.1 tholo 925:
1.7 millert 926: Aug 15, 1995:
927: initialized Cells in setsymtab more carefully; some fields
928: were not set. (thanks to purify, all of whose complaints i
929: think i now understand.)
1.1 tholo 930:
1.7 millert 931: fixed at least one error in gsub that looked at -1-th element
932: of an array when substituting for a null match (e.g., $).
1.1 tholo 933:
1.7 millert 934: delete arrayname is now legal; it clears the elements but leaves
935: the array, which may not be the right behavior.
1.1 tholo 936:
1.7 millert 937: modified makefile: my current make can't cope with the test used
938: to avoid unnecessary yacc invocations.
1.1 tholo 939:
1.7 millert 940: Jul 17, 1995:
941: added dynamically growing strings to awk.lx.l and b.c
942: to permit regular expressions to be much bigger.
943: the state arrays can still overflow.
1.1 tholo 944:
1.7 millert 945: Aug 24, 1994:
946: detect duplicate arguments in function definitions (mdm).
1.1 tholo 947:
1.7 millert 948: May 11, 1994:
949: trivial fix to printf to limit string size in sub().
1.1 tholo 950:
1.7 millert 951: Apr 22, 1994:
952: fixed yet another subtle self-assignment problem:
953: $1 = $2; $1 = $1 clobbered $1.
1.1 tholo 954:
1.7 millert 955: Regression tests now use private echo, to avoid quoting problems.
1.1 tholo 956:
1.7 millert 957: Feb 2, 1994:
958: changed error() to print line number as %d, not %g.
1.1 tholo 959:
1.7 millert 960: Jul 23, 1993:
961: cosmetic changes: increased sizes of some arrays,
962: reworded some error messages.
1.1 tholo 963:
1.7 millert 964: added CONVFMT as in posix (just replaced OFMT in getsval)
1.1 tholo 965:
1.7 millert 966: FILENAME is now "" until the first thing that causes a file
967: to be opened.
1.1 tholo 968:
1.7 millert 969: Nov 28, 1992:
970: deleted yyunput and yyoutput from proto.h;
971: different versions of lex give these different declarations.
1.1 tholo 972:
1.7 millert 973: May 31, 1992:
974: added -mr N and -mf N options: more record and fields.
975: these really ought to adjust automatically.
1.1 tholo 976:
1.7 millert 977: cleaned up some error messages; "out of space" now means
978: malloc returned NULL in all cases.
1.1 tholo 979:
1.7 millert 980: changed rehash so that if it runs out, it just returns;
981: things will continue to run slow, but maybe a bit longer.
1.1 tholo 982:
1.7 millert 983: Apr 24, 1992:
984: remove redundant close of stdin when using -f -.
1.1 tholo 985:
1.7 millert 986: got rid of core dump with -d; awk -d just prints date.
1.1 tholo 987:
1.7 millert 988: Apr 12, 1992:
989: added explicit check for /dev/std(in,out,err) in redirection.
990: unlike gawk, no /dev/fd/n yet.
1.1 tholo 991:
1.7 millert 992: added (file/pipe) builtin. hard to test satisfactorily.
993: not posix.
1.1 tholo 994:
1.7 millert 995: Feb 20, 1992:
996: recompile after abortive changes; should be unchanged.
1.1 tholo 997:
1.7 millert 998: Dec 2, 1991:
999: die-casting time: converted to ansi C, installed that.
1.1 tholo 1000:
1.7 millert 1001: Nov 30, 1991:
1002: fixed storage leak in freefa, failing to recover [N]CCL.
1003: thanks to Bill Jones (jones@cs.usask.ca)
1.1 tholo 1004:
1.7 millert 1005: Nov 19, 1991:
1006: use RAND_MAX instead of literal in builtin().
1.1 tholo 1007:
1.7 millert 1008: Nov 12, 1991:
1009: cranked up some fixed-size arrays in b.c, and added a test for
1010: overflow in penter. thanks to mark larsen.
1.1 tholo 1011:
1.7 millert 1012: Sep 24, 1991:
1013: increased buffer in gsub. a very crude fix to a general problem.
1014: and again on Sep 26.
1.1 tholo 1015:
1.7 millert 1016: Aug 18, 1991:
1017: enforce variable name syntax for commandline variables: has to
1018: start with letter or _.
1.1 tholo 1019:
1.7 millert 1020: Jul 27, 1991:
1021: allow newline after ; in for statements.
1.1 tholo 1022:
1.7 millert 1023: Jul 21, 1991:
1024: fixed so that in self-assignment like $1=$1, side effects
1025: like recomputing $0 take place. (this is getting subtle.)
1.1 tholo 1026:
1.7 millert 1027: Jun 30, 1991:
1028: better test for detecting too-long output record.
1.1 tholo 1029:
1.7 millert 1030: Jun 2, 1991:
1031: better defense against very long printf strings.
1032: made break and continue illegal outside of loops.
1.1 tholo 1033:
1.7 millert 1034: May 13, 1991:
1035: removed extra arg on gettemp, tempfree. minor error message rewording.
1.1 tholo 1036:
1037: May 6, 1991:
1038: fixed silly bug in hex parsing in hexstr().
1039: removed an apparently unnecessary test in isnumber().
1040: warn about weird printf conversions.
1041: fixed unchecked array overwrite in relex().
1042:
1043: changed for (i in array) to access elements in sorted order.
1044: then unchanged it -- it really does run slower in too many cases.
1045: left the code in place, commented out.
1046:
1.7 millert 1047: Feb 10, 1991:
1048: check error status on all writes, to avoid banging on full disks.
1.1 tholo 1049:
1.7 millert 1050: Jan 28, 1991:
1051: awk -f - reads the program from stdin.
1.1 tholo 1052:
1.7 millert 1053: Jan 11, 1991:
1054: failed to set numeric state on $0 in cmd|getline context in run.c.
1.1 tholo 1055:
1.7 millert 1056: Nov 2, 1990:
1057: fixed sleazy test for integrality in getsval; use modf.
1.1 tholo 1058:
1.7 millert 1059: Oct 29, 1990:
1060: fixed sleazy buggy code in lib.c that looked (incorrectly) for
1061: too long input lines.
1.1 tholo 1062:
1.7 millert 1063: Oct 14, 1990:
1064: fixed the bug on p. 198 in which it couldn't deduce that an
1065: argument was an array in some contexts. replaced the error
1066: message in intest() by code that damn well makes it an array.
1.1 tholo 1067:
1.7 millert 1068: Oct 8, 1990:
1069: fixed horrible bug: types and values were not preserved in
1070: some kinds of self-assignment. (in assign().)
1.1 tholo 1071:
1.7 millert 1072: Aug 24, 1990:
1073: changed NCHARS to 256 to handle 8-bit characters in strings
1074: presented to match(), etc.
1.1 tholo 1075:
1.7 millert 1076: Jun 26, 1990:
1077: changed struct rrow (awk.h) to use long instead of int for lval,
1078: since cfoll() stores a pointer in it. now works better when int's
1079: are smaller than pointers!
1.1 tholo 1080:
1.7 millert 1081: May 6, 1990:
1082: AVA fixed the grammar so that ! is uniformly of the same precedence as
1083: unary + and -. This renders illegal some constructs like !x=y, which
1084: now has to be parenthesized as !(x=y), and makes others work properly:
1085: !x+y is (!x)+y, and x!y is x !y, not two pattern-action statements.
1086: (These problems were pointed out by Bob Lenk of Posix.)
1.1 tholo 1087:
1.7 millert 1088: Added \x to regular expressions (already in strings).
1089: Limited octal to octal digits; \8 and \9 are not octal.
1090: Centralized the code for parsing escapes in regular expressions.
1091: Added a bunch of tests to T.re and T.sub to verify some of this.
1.1 tholo 1092:
1.7 millert 1093: Feb 9, 1990:
1094: fixed null pointer dereference bug in main.c: -F[nothing]. sigh.
1.1 tholo 1095:
1.7 millert 1096: restored srand behavior: it returns the current seed.
1.1 tholo 1097:
1.7 millert 1098: Jan 18, 1990:
1099: srand now returns previous seed value (0 to start).
1.1 tholo 1100:
1.7 millert 1101: Jan 5, 1990:
1102: fix potential problem in tran.c -- something was freed,
1103: then used in freesymtab.
1.1 tholo 1104:
1.7 millert 1105: Oct 18, 1989:
1106: another try to get the max number of open files set with
1107: relatively machine-independent code.
1.1 tholo 1108:
1.7 millert 1109: small fix to input() in case of multiple reads after EOF.
1.1 tholo 1110:
1.7 millert 1111: Oct 11, 1989:
1112: FILENAME is now defined in the BEGIN block -- too many old
1113: programs broke.
1.1 tholo 1114:
1.7 millert 1115: "-" means stdin in getline as well as on the commandline.
1.1 tholo 1116:
1.7 millert 1117: added a bunch of casts to the code to tell the truth about
1118: char * vs. unsigned char *, a right royal pain. added a
1119: setlocale call to the front of main, though probably no one
1120: has it usefully implemented yet.
1.1 tholo 1121:
1.7 millert 1122: Aug 24, 1989:
1123: removed redundant relational tests against nullnode if parse
1124: tree already had a relational at that point.
1.1 tholo 1125:
1.7 millert 1126: Aug 11, 1989:
1127: fixed bug: commandline variable assignment has to look like
1128: var=something. (consider the man page for =, in file =.1)
1.1 tholo 1129:
1.7 millert 1130: changed number of arguments to functions to static arrays
1131: to avoid repeated malloc calls.
1.1 tholo 1132:
1.7 millert 1133: Aug 2, 1989:
1134: restored -F (space) separator
1.1 tholo 1135:
1.7 millert 1136: Jul 30, 1989:
1137: added -v x=1 y=2 ... for immediate commandline variable assignment;
1138: done before the BEGIN block for sure. they have to precede the
1139: program if the program is on the commandline.
1140: Modified Aug 2 to require a separate -v for each assignment.
1.1 tholo 1141:
1.7 millert 1142: Jul 10, 1989:
1143: fixed ref-thru-zero bug in environment code in tran.c
1.1 tholo 1144:
1.7 millert 1145: Jun 23, 1989:
1146: add newline to usage message.
1.1 tholo 1147:
1.7 millert 1148: Jun 14, 1989:
1149: added some missing ansi printf conversion letters: %i %X %E %G.
1150: no sensible meaning for h or L, so they may not do what one expects.
1.1 tholo 1151:
1.7 millert 1152: made %* conversions work.
1.1 tholo 1153:
1.7 millert 1154: changed x^y so that if n is a positive integer, it's done
1155: by explicit multiplication, thus achieving maximum accuracy.
1156: (this should be done by pow() but it seems not to be locally.)
1157: done to x ^= y as well.
1.1 tholo 1158:
1.7 millert 1159: Jun 4, 1989:
1160: ENVIRON array contains environment: if shell variable V=thing,
1161: ENVIRON["V"] is "thing"
1.1 tholo 1162:
1.7 millert 1163: multiple -f arguments permitted. error reporting is naive.
1164: (they were permitted before, but only the last was used.)
1.1 tholo 1165:
1.7 millert 1166: fixed a really stupid botch in the debugging macro dprintf
1.1 tholo 1167:
1.7 millert 1168: fixed order of evaluation of commandline assignments to match
1169: what the book claims: an argument of the form x=e is evaluated
1170: at the time it would have been opened if it were a filename (p 63).
1171: this invalidates the suggested answer to ex 4-1 (p 195).
1.1 tholo 1172:
1.7 millert 1173: removed some code that permitted -F (space) fieldseparator,
1174: since it didn't quite work right anyway. (restored aug 2)
1.1 tholo 1175:
1.7 millert 1176: Apr 27, 1989:
1177: Line number now accumulated correctly for comment lines.
1.1 tholo 1178:
1.7 millert 1179: Apr 26, 1989:
1180: Debugging output now includes a version date,
1181: if one compiles it into the source each time.
1.1 tholo 1182:
1.7 millert 1183: Apr 9, 1989:
1184: Changed grammar to prohibit constants as 3rd arg of sub and gsub;
1185: prevents class of overwriting-a-constant errors. (Last one?)
1186: This invalidates the "banana" example on page 43 of the book.
1.1 tholo 1187:
1.7 millert 1188: Added \a ("alert"), \v (vertical tab), \xhhh (hexadecimal),
1189: as in ANSI, for strings. Rescinded the sloppiness that permitted
1190: non-octal digits in \ooo. Warning: not all compilers and libraries
1191: will be able to deal with \x correctly.
1.1 tholo 1192:
1.7 millert 1193: Jan 9, 1989:
1194: Fixed bug that caused tempcell list to contain a duplicate.
1195: The fix is kludgy.
1.1 tholo 1196:
1.7 millert 1197: Dec 17, 1988:
1198: Catches some more commandline errors in main.
1199: Removed redundant decl of modf in run.c (confuses some compilers).
1200: Warning: there's no single declaration of malloc, etc., in awk.h
1201: that seems to satisfy all compilers.
1.1 tholo 1202:
1.7 millert 1203: Dec 7, 1988:
1204: Added a bit of code to error printing to avoid printing nulls.
1205: (Not clear that it actually would.)
1.1 tholo 1206:
1.7 millert 1207: Nov 27, 1988:
1208: With fear and trembling, modified the grammar to permit
1209: multiple pattern-action statements on one line without
1210: an explicit separator. By definition, this capitulation
1211: to the ghost of ancient implementations remains undefined
1212: and thus subject to change without notice or apology.
1213: DO NOT COUNT ON IT.
1.1 tholo 1214:
1.7 millert 1215: Oct 30, 1988:
1216: Fixed bug in call() that failed to recover storage.
1.1 tholo 1217:
1.7 millert 1218: A warning is now generated if there are more arguments
1219: in the call than in the definition (in lieu of fixing
1220: another storage leak).
1.2 millert 1221:
1.7 millert 1222: Oct 20, 1988:
1223: Fixed %c: if expr is numeric, use numeric value;
1224: otherwise print 1st char of string value. still
1225: doesn't work if the value is 0 -- won't print \0.
1.2 millert 1226:
1.7 millert 1227: Added a few more checks for running out of malloc.
1.2 millert 1228:
1.7 millert 1229: Oct 12, 1988:
1230: Fixed bug in call() that freed local arrays twice.
1.5 kstailey 1231:
1.7 millert 1232: Fixed to handle deletion of non-existent array right;
1233: complains about attempt to delete non-array element.
1.6 kstailey 1234:
1.7 millert 1235: Sep 30, 1988:
1236: Now guarantees to evaluate all arguments of built-in
1237: functions, as in C; the appearance is that arguments
1238: are evaluated before the function is called. Places
1239: affected are sub (gsub was ok), substr, printf, and
1240: all the built-in arithmetic functions in bltin().
1241: A warning is generated if a bltin() is called with
1242: the wrong number of arguments.
1.6 kstailey 1243:
1.7 millert 1244: This requires changing makeprof on p167 of the book.
1.6 kstailey 1245:
1.7 millert 1246: Aug 23, 1988:
1247: setting FILENAME in BEGIN caused core dump, apparently
1248: because it was freeing space not allocated by malloc.
1.6 kstailey 1249:
1.7 millert 1250: July 24, 1988:
1251: fixed egregious error in toupper/tolower functions.
1252: still subject to rescinding, however.
1.6 kstailey 1253:
1.7 millert 1254: July 2, 1988:
1255: flush stdout before opening file or pipe
1.6 kstailey 1256:
1.7 millert 1257: July 2, 1988:
1258: performance bug in b.c/cgoto(): not freeing some sets of states.
1259: partial fix only right now, and the number of states increased
1260: to make it less obvious.
1.6 kstailey 1261:
1.7 millert 1262: June 1, 1988:
1263: check error status on close
1.6 kstailey 1264:
1.7 millert 1265: May 28, 1988:
1266: srand returns seed value it's using.
1267: see 1/18/90
1.6 kstailey 1268:
1.7 millert 1269: May 22, 1988:
1270: Removed limit on depth of function calls.
1.6 kstailey 1271:
1.7 millert 1272: May 10, 1988:
1273: Fixed lib.c to permit _ in commandline variable names.
1.6 kstailey 1274:
1.7 millert 1275: Mar 25, 1988:
1276: main.c fixed to recognize -- as terminator of command-
1277: line options. Illegal options flagged.
1278: Error reporting slightly cleaned up.
1.6 kstailey 1279:
1.7 millert 1280: Dec 2, 1987:
1281: Newer C compilers apply a strict scope rule to extern
1282: declarations within functions. Two extern declarations in
1283: lib.c and tran.c have been moved to obviate this problem.
1.6 kstailey 1284:
1.7 millert 1285: Oct xx, 1987:
1286: Reluctantly added toupper and tolower functions.
1287: Subject to rescinding without notice.
1.6 kstailey 1288:
1.7 millert 1289: Sep 17, 1987:
1290: Error-message printer had printf(s) instead of
1291: printf("%s",s); got core dumps when the message
1292: included a %.
1.6 kstailey 1293:
1.7 millert 1294: Sep 12, 1987:
1295: Very long printf strings caused core dump;
1296: fixed aprintf, asprintf, format to catch them.
1297: Can still get a core dump in printf itself.
1.6 kstailey 1298:
1299:
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