Annotation of src/usr.bin/awk/FIXES, Revision 1.38
1.38 ! millert 1: /* $OpenBSD: FIXES,v 1.37 2020/07/30 17:45:44 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.
1.38 ! millert 28:
! 29: August 7, 2020:
! 30: Merge PR #93, which adds casts to (void*) for debug prints
! 31: using the %p format specifier. Thanks to GitHub user YongHaoWu
! 32: ("Chris") for the fixes.
! 33:
! 34: August 4, 2020:
! 35: In run.c, use non-restartable multibyte routines to attain
! 36: portability to DJGPP. Should fix Issue 92. Thanks to Albert Wik
! 37: for the report and to Todd Miller for the suggested fix.
1.37 millert 38:
39: July 30, 2020:
40: Merge PRs 88-91 which fix small bugs. Thanks to Todd Miller and
41: Tim van der Molen for the fixes.
42:
43: In order to make life easier, we move exclusively to bison
44: as the parser generator.
1.36 millert 45:
46: July 2, 2020:
47: Merge PRs 85 and 86 which fix regressions. Thanks to
48: Tim van der Molen for the fixes.
1.35 millert 49:
50: June 25, 2020:
51: Merge PRs 82 and 84. The latter fixes issue #83. Thanks to
52: Todd Miller and awkfan77.
1.34 millert 53:
54: June 12, 2020:
55: Clear errno before calling errcheck to avoid any spurious errors
56: left over from previous calls that may have set it. Thanks to
57: Todd Miller for the fix, from PR #80.
58:
59: Fix Issue #78 by allowing \r to follow floating point numbers in
60: lib.c:is_number. Thanks to GitHub user ajcarr for the report
61: and to Arnold Robbins for the fix.
1.33 millert 62:
63: June 5, 2020:
64: In fldbld(), make sure that inputFS is set before trying to
65: use it. Thanks to Steffen Nurpmeso <steffen@sdaoden.eu>
66: for the report.
67:
68: May 5, 2020:
69: Fix checks for compilers that can handle noreturn. Thanks to
70: GitHub user enh-google for pointing it out. Closes Issue #79.
71:
72: April 16, 2020:
73: Handle old compilers that don't support C11 (for noreturn).
74: Thanks to Arnold Robbins.
75:
76: April 5, 2020:
77: Use <stdnoreturn.h> and noreturn instead of GCC attributes.
78: Thanks to GitHub user awkfan77. Closes PR #77.
1.30 millert 79:
1.32 millert 80: February 28, 2020:
81: More cleanups from Christos Zoulas: notably backslash continuation
82: inside strings removes the newline and a fix for RS = "^a".
83: Fix for address sanitizer-found problem. Thanks to GitHub user
84: enh-google.
85:
86: February 19, 2020:
87: More small cleanups from Christos Zoulas.
88:
89: February 18, 2020:
90: Additional cleanups from Christos Zoulas. It's no longer necessary
91: to use the -y flag to bison.
92:
93: February 6, 2020:
94: Additional small cleanups from Christos Zoulas. awk is now
95: a little more robust about reporting I/O errors upon exit.
96:
1.31 millert 97: January 31, 2020:
98: Merge PR #70, which avoids use of variable length arrays. Thanks
99: to GitHub user michaelforney. Fix issue #60 ({0} in interval
1.32 millert 100: expressions doesn't work). Also get all tests working again.
101: Thanks to Arnold Robbins.
1.31 millert 102:
103: January 24, 2020:
104: A number of small cleanups from Christos Zoulas. Add the close
105: on exec flag to files/pipes opened for redirection; courtesy of
106: Arnold Robbins.
107:
108: January 19, 2020:
109: If POSIXLY_CORRECT is set in the environment, then sub and gsub
110: use POSIX rules for multiple backslashes. This fixes Issue #66,
111: while maintaining backwards compatibility.
112:
113: January 9, 2020:
114: Input/output errors on closing files are now fatal instead of
115: mere warnings. Thanks to Martijn Dekker <martijn@inlv.org>.
116:
1.30 millert 117: January 5, 2020:
118: Fix a bug in the concatentation of two string constants into
119: one done in the grammar. Fixes GitHub issue #61. Thanks
120: to GitHub user awkfan77 for pointing out the direction for
121: the fix. New test T.concat added to the test suite.
122: Fix a few memory leaks reported by valgrind, as well.
123:
124: December 27, 2019:
125: Fix a bug whereby a{0,3} could match four a's. Thanks to
126: "Anonymous AWK fan" for the report.
127:
128: December 11, 2019:
129: Further printf-related fixes for 32 bit systems.
130: Thanks again to Christos Zoulas.
131:
132: December 8, 2019:
133: Fix the return value of sprintf("%d") on 32 bit systems.
134: Thanks to Jim Lowe for the report and to Christos Zoulas
135: for the fix.
1.29 millert 136:
137: November 10, 2019:
138: Convert a number of Boolean integer variables into
139: actual bools. Convert compile_time variable into an
140: enum and simplify some of the related code. Thanks
141: to Arnold Robbins.
142:
143: November 8, 2019:
144: Fix from Ori Bernstein to get UTF-8 characters instead of
145: bytes when FS = "". This is currently the only bit of
146: the One True Awk that understands multibyte characters.
147: From Arnold Robbins, apply some cleanups in the test suite.
1.28 millert 148:
149: October 25, 2019:
150: More fixes and cleanups from NetBSD, courtesy of Christos
151: Zoulas. Merges PRs 54 and 55.
152:
153: October 24, 2019:
154: Import second round of code cleanups from NetBSD. Much thanks
1.31 millert 155: to Christos Zoulas (GitHub user zoulasc). Merges PR 53.
1.28 millert 156: Add an optimization for string concatenation, also from
157: Christos.
1.27 millert 158:
159: October 17, 2019:
160: Import code cleanups from NetBSD. Much thanks to Christos
1.31 millert 161: Zoulas (GitHub user zoulasc). Merges PR 51.
1.26 millert 162:
163: October 6, 2019:
164: Import code from NetBSD awk that implements RS as a regular
165: expression.
1.23 millert 166:
1.25 millert 167: September 10, 2019:
168: Fixes for various array / memory overruns found via gcc's
1.31 millert 169: -fsanitize=unknown. Thanks to Alexander Richardson (GitHub
1.25 millert 170: user arichardson). Merges PRs 47 and 48.
171:
172: July 28, 2019:
173: Import grammar optimization from NetBSD: Two string constants
174: concatenated together get turned into a single string.
175:
176: July 26, 2019:
177: Support POSIX-specified C-style escape sequences "\a" (alarm)
178: and "\v" (vertical tab) in command line arguments and regular
179: expressions, further to the support for them in strings added on
180: Apr 9, 1989. These now no longer match as literal "a" and "v"
181: characters (as they don't on other awk implementations).
182: Thanks to Martijn Dekker.
183:
184: July 17, 2019:
185: Pull in a number of code cleanups and minor fixes from
186: Warner Losh's bsd-ota branch. The only user visible change
187: is the use of random(3) as the random number generator.
188: Thanks to Warner Losh for collecting all these fixes in
189: one easy place to get them from.
190:
191: July 16, 2019:
192: Fix field splitting to use FS value as of the time a record
193: was read or assigned to. Thanks to GitHub user Cody Mello (melloc)
194: for the fix. (Merged from his branch, via PR #42.) Updated
195: testdir/T.split per said PR as well.
196:
197: June 24, 2019:
198: Extract awktest.tar into testdir directory. Add some very
199: simple mechanics to the makefile for running the tests and
200: for cleaning up. No changes to awk itself.
201:
1.24 millert 202: June 17, 2019:
203: Disallow deleting SYMTAB and its elements, which creates
204: use-after-free bugs. Thanks to GitHub user Cody Mello (melloc)
205: for the fix. (Merged from PR #43.)
206:
207: June 5, 2019:
208: Allow unmatched right parenthesis in a regular expression to
209: be treated literally. Fixes Issue #40. Thanks to GitHub user
210: Warner Losh (bsdimp) for the report. Thanks to Arnold Robbins
211: for the fix.
212:
213: May 29,2019:
214: Fix check for command line arguments to no longer require that
215: first character after '=' not be another '='. Reverts change of
216: August 11, 1989. Thanks to GitHub user Jamie Landeg Jones for
217: pointing out the issue; from Issue #38.
218:
219: Apr 7, 2019:
220: Update awktest.tar(p.50) to use modern options to sort. Needed
221: for Android development. Thanks to GitHub user mohd-akram (Mohamed
222: Akram). From Issue #33.
223:
224: Mar 12, 2019:
225: Added very simplistic support for cross-compiling in the
226: makefile. We are NOT going to go in the direction of the
227: autotools, though. Thanks to GitHub user nee-san for
228: the basic change. (Merged from PR #34.)
229:
1.23 millert 230: Mar 5, 2019:
231: Added support for POSIX-standard interval expressions (a.k.a.
232: bounds, a.k.a. repetition expressions) in regular expressions,
233: backported (via NetBSD) from Apple awk-24 (20070501).
234: Thanks to Martijn Dekker <martijn@inlv.org> for the port.
235: (Merged from PR #30.)
236:
237: Mar 3, 2019:
238: Merge PRs as follows:
239: #12: Avoid undefined behaviour when using ctype(3) functions in
240: relex(). Thanks to GitHub user iamleot.
241: #31: Make getline handle numeric strings, and update FIXES. Thanks
1.24 millert 242: to GitHub user arnoldrobbins.
1.23 millert 243: #32: maketab: support build systems with read-only source. Thanks
244: to GitHub user enh.
1.22 millert 245:
246: Jan 25, 2019:
247: Make getline handle numeric strings properly in all cases.
248: (Thanks, Arnold.)
249:
250: Jan 21, 2019:
251: Merged a number of small fixes from GitHub pull requests.
252: Thanks to GitHub users Arnold Robbins (arnoldrobbins),
253: Cody Mello (melloc) and Christoph Junghans (junghans).
254: PR numbers: 13-21, 23, 24, 27.
1.21 millert 255:
256: Oct 25, 2018:
257: Added test in maketab.c to prevent generating a proctab entry
258: for YYSTYPE_IS_DEFINED. It was harmless but some gcc settings
259: generated a warning message. Thanks to Nan Xiao for report.
1.20 millert 260:
261: Aug 27, 2018:
262: Disallow '$' in printf formats; arguments evaluated in order
263: and printed in order.
264:
265: Added some casts to silence warnings on debugging printfs.
266: (Thanks, Arnold.)
1.18 millert 267:
1.19 millert 268: Aug 23, 2018:
269: A long list of fixes courtesy of Arnold Robbins,
270: to whom profound thanks.
271:
272: 1. ofs-rebuild: OFS value used to rebuild the record was incorrect.
273: Fixed August 19, 2014. Revised fix August 2018.
274:
275: 2. system-status: Instead of a floating-point division by 256, use
276: the wait(2) macros to create a reasonable exit status.
277: Fixed March 12, 2016.
278:
279: 3. space: Use provided xisblank() function instead of ispace() for
280: matching [[:blank:]].
281:
282: 4. a-format: Add POSIX standard %a and %A to supported formats. Check
283: at runtime that this format is available.
284:
285: 5. decr-NF: Decrementing NF did not change $0. This is a decades-old
286: bug. There are interactions with the old and new value of OFS as well.
287: Most of the fix came from the NetBSD awk.
288:
289: 6. string-conv: String conversions of scalars were sticky. Once a
290: conversion to string happened, even with OFMT, that value was used until
291: a new numeric value was assigned, even if OFMT differed from CONVFMT,
292: and also if CONVFMT changed.
293:
294: 7. unary-plus: Unary plus on a string constant returned the string.
295: Instead, it should convert the value to numeric and give that value.
296:
297: Also added Arnold's tests for these to awktest.tar as T.arnold.
298:
299: Aug 15, 2018:
300: fixed mangled awktest.tar (thanks, Arnold), posted all
301: current (very minor) fixes to github / onetrueawk
302:
1.18 millert 303: Jun 7, 2018:
304: (yes, a long layoff)
305: Updated some broken tests (beebe.tar, T.lilly)
306: [thanks to Arnold Robbins]
307:
308: Mar 26, 2015:
309: buffer overflow in error reporting; thanks to tobias ulmer
310: and john-mark gurney for spotting it and the fix.
311:
312: Feb 4, 2013:
313: cleaned up a handful of tests that didn't seem to actually
314: test for correct behavior: T.latin1, T.gawk.
315:
316: Jan 5, 2013:
317: added ,NULL initializer to static Cells in run.c; not really
318: needed but cleaner. Thanks to Michael Bombardieri.
1.17 millert 319:
320: Dec 20, 2012:
321: fiddled makefile to get correct yacc and bison flags. pick yacc
322: (linux) or bison (mac) as necessary.
323:
324: added __attribute__((__noreturn__)) to a couple of lines in
325: proto.h, to silence someone's enthusiastic checker.
326:
327: fixed obscure call by value bug in split(a[1],a) reported on
328: 9fans. the management of temporary values is just a mess; i
329: took a shortcut by making an extra string copy. thanks
330: to paul patience and arnold robbins for passing it on and for
331: proposed patches.
332:
333: tiny fiddle in setfval to eliminate -0 results in T.expr, which
334: has irritated me for 20+ years.
1.16 millert 335:
336: Aug 10, 2011:
337: another fix to avoid core dump with delete(ARGV); again, many thanks
338: to ruslan ermilov.
339:
340: Aug 7, 2011:
341: split(s, a, //) now behaves the same as split(s, a, "")
342:
343: Jun 12, 2011:
344: /pat/, \n /pat/ {...} is now legal, though bad style to use.
345:
346: added checks to new -v code that permits -vnospace; thanks to
1.25 millert 347: ruslan ermilov for spotting this and providing the patch.
1.16 millert 348:
349: removed fixed limit on number of open files; thanks to aleksey
1.25 millert 350: cheusov and christos zoulos.
1.16 millert 351:
352: fixed day 1 bug that resurrected deleted elements of ARGV when
353: used as filenames (in lib.c).
354:
355: minor type fiddles to make gcc -Wall -pedantic happier (but not
356: totally so); turned on -fno-strict-aliasing in makefile.
357:
358: May 6, 2011:
359: added #ifdef for isblank.
360: now allows -ffoo as well as -f foo arguments.
361: (thanks, ruslan)
362:
363: May 1, 2011:
364: after advice from todd miller, kevin lo, ruslan ermilov,
365: and arnold robbins, changed srand() to return the previous
366: seed (which is 1 on the first call of srand). the seed is
367: an Awkfloat internally though converted to unsigned int to
1.25 millert 368: pass to the library srand(). thanks, everyone.
1.16 millert 369:
370: fixed a subtle (and i hope low-probability) overflow error
1.25 millert 371: in fldbld, by adding space for one extra \0. thanks to
1.16 millert 372: robert bassett for spotting this one and providing a fix.
373:
374: removed the files related to compilation on windows. i no
375: longer have anything like a current windows environment, so
376: i can't test any of it.
1.15 millert 377:
378: May 23, 2010:
379: fixed long-standing overflow bug in run.c; many thanks to
380: nelson beebe for spotting it and providing the fix.
381:
382: fixed bug that didn't parse -vd=1 properly; thanks to santiago
383: vila for spotting it.
384:
385: Feb 8, 2010:
386: i give up. replaced isblank with isspace in b.c; there are
387: no consistent header files.
388:
389: Nov 26, 2009:
390: fixed a long-standing issue with when FS takes effect. a
391: change to FS is now noticed immediately for subsequent splits.
392:
393: changed the name getline() to awkgetline() to avoid yet another
394: name conflict somewhere.
395:
396: Feb 11, 2009:
397: temporarily for now defined HAS_ISBLANK, since that seems to
398: be the best way through the thicket. isblank arrived in C99,
399: but seems to be arriving at different systems at different
400: times.
401:
402: Oct 8, 2008:
403: fixed typo in b.c that set tmpvec wrongly. no one had ever
404: run into the problem, apparently. thanks to alistair crooks.
1.14 millert 405:
406: Oct 23, 2007:
407: minor fix in lib.c: increase inputFS to 100, change malloc
1.25 millert 408: for fields to n+1.
1.14 millert 409:
410: fixed memory fault caused by out of order test in setsval.
411:
412: thanks to david o'brien, freebsd, for both fixes.
413:
414: May 1, 2007:
415: fiddle in makefile to fix for BSD make; thanks to igor sobrado.
416:
417: Mar 31, 2007:
418: fixed some null pointer refs calling adjbuf.
419:
420: Feb 21, 2007:
421: fixed a bug in matching the null RE in sub and gsub. thanks to al aho
422: who actually did the fix (in b.c), and to wolfgang seeberg for finding
423: it and providing a very compact test case.
424:
425: fixed quotation in b.c; thanks to Hal Pratt and the Princeton Dante
426: Project.
427:
428: removed some no-effect asserts in run.c.
429:
430: fiddled maketab.c to not complain about bison-generated values.
431:
432: removed the obsolete -V argument; fixed --version to print the
433: version and exit.
434:
435: fixed wording and an outright error in the usage message; thanks to igor
436: sobrado and jason mcintyre.
437:
438: fixed a bug in -d that caused core dump if no program followed.
439:
440: Jan 1, 2007:
441: dropped mac.code from makefile; there are few non-MacOSX
442: mac's these days.
443:
444: Jan 17, 2006:
445: system() not flagged as unsafe in the unadvertised -safe option.
446: found it while enhancing tests before shipping the ;login: article.
447: practice what you preach.
448:
449: removed the 9-years-obsolete -mr and -mf flags.
450:
451: added -version and --version options.
452:
453: core dump on linux with BEGIN {nextfile}, now fixed.
454:
1.25 millert 455: removed some #ifdef's in run.c and lex.c that appear to no
1.14 millert 456: longer be necessary.
457:
458: Apr 24, 2005:
459: modified lib.c so that values of $0 et al are preserved in the END
460: block, apparently as required by posix. thanks to havard eidnes
461: for the report and code.
462:
463: Jan 14, 2005:
464: fixed infinite loop in parsing, originally found by brian tsang.
465: thanks to arnold robbins for a suggestion that started me
466: rethinking it.
467:
468: Dec 31, 2004:
1.25 millert 469: prevent overflow of -f array in main, head off potential error in
470: call of SYNTAX(), test malloc return in lib.c, all with thanks to
1.14 millert 471: todd miller.
1.13 millert 472:
473: Dec 22, 2004:
474: cranked up size of NCHARS; coverity thinks it can be overrun with
475: smaller size, and i think that's right. added some assertions to b.c
476: to catch places where it might overrun. the RE code is still fragile.
477:
478: Dec 5, 2004:
479: fixed a couple of overflow problems with ridiculous field numbers:
480: e.g., print $(2^32-1). thanks to ruslan ermilov, giorgos keramidas
481: and david o'brien at freebsd.org for patches. this really should
482: be re-done from scratch.
483:
484: Nov 21, 2004:
485: fixed another 25-year-old RE bug, in split. it's another failure
486: to (re-)initialize. thanks to steve fisher for spotting this and
487: providing a good test case.
488:
489: Nov 22, 2003:
490: fixed a bug in regular expressions that dates (so help me) from 1977;
491: it's been there from the beginning. an anchored longest match that
492: was longer than the number of states triggered a failure to initialize
493: the machine properly. many thanks to moinak ghosh for not only finding
494: this one but for providing a fix, in some of the most mysterious
495: code known to man.
496:
497: fixed a storage leak in call() that appears to have been there since
1.25 millert 498: 1983 or so -- a function without an explicit return that assigns a
499: string to a parameter leaked a Cell. thanks to moinak ghosh for
1.13 millert 500: spotting this very subtle one.
501:
502: Jul 31, 2003:
503: fixed, thanks to andrey chernov and ruslan ermilov, a bug in lex.c
504: that mis-handled the character 255 in input. (it was being compared
505: to EOF with a signed comparison.)
506:
507: Jul 29, 2003:
508: fixed (i think) the long-standing botch that included the beginning of
509: line state ^ for RE's in the set of valid characters; this led to a
510: variety of odd problems, including failure to properly match certain
511: regular expressions in non-US locales. thanks to ruslan for keeping
512: at this one.
513:
514: Jul 28, 2003:
515: n-th try at getting internationalization right, with thanks to volker
516: kiefel, arnold robbins and ruslan ermilov for advice, though they
517: should not be blamed for the outcome. according to posix, "." is the
518: radix character in programs and command line arguments regardless of
519: the locale; otherwise, the locale should prevail for input and output
520: of numbers. so it's intended to work that way.
1.25 millert 521:
1.13 millert 522: i have rescinded the attempt to use strcoll in expanding shorthands in
523: regular expressions (cclenter). its properties are much too
524: surprising; for example [a-c] matches aAbBc in locale en_US but abBcC
525: in locale fr_CA. i can see how this might arise by implementation
526: but i cannot explain it to a human user. (this behavior can be seen
527: in gawk as well; we're leaning on the same library.)
528:
529: the issue appears to be that strcoll is meant for sorting, where
530: merging upper and lower case may make sense (though note that unix
531: sort does not do this by default either). it is not appropriate
532: for regular expressions, where the goal is to match specific
533: patterns of characters. in any case, the notations [:lower:], etc.,
534: are available in awk, and they are more likely to work correctly in
535: most locales.
536:
537: a moratorium is hereby declared on internationalization changes.
538: i apologize to friends and colleagues in other parts of the world.
539: i would truly like to get this "right", but i don't know what
540: that is, and i do not want to keep making changes until it's clear.
541:
542: Jul 4, 2003:
543: fixed bug that permitted non-terminated RE, as in "awk /x".
544:
545: Jun 1, 2003:
546: subtle change to split: if source is empty, number of elems
547: is always 0 and the array is not set.
548:
549: Mar 21, 2003:
550: added some parens to isblank, in another attempt to make things
551: internationally portable.
552:
553: Mar 14, 2003:
554: the internationalization changes, somewhat modified, are now
555: reinstated. in theory awk will now do character comparisons
556: and case conversions in national language, but "." will always
557: be the decimal point separator on input and output regardless
558: of national language. isblank(){} has an #ifndef.
559:
560: this no longer compiles on windows: LC_MESSAGES isn't defined
561: in vc6++.
562:
563: fixed subtle behavior in field and record splitting: if FS is
564: a single character and RS is not empty, \n is NOT a separator.
565: this tortuous reading is found in the awk book; behavior now
566: matches gawk and mawk.
1.11 millert 567:
568: Dec 13, 2002:
569: for the moment, the internationalization changes of nov 29 are
570: rolled back -- programs like x = 1.2 don't work in some locales,
571: because the parser is expecting x = 1,2. until i understand this
572: better, this will have to wait.
573:
574: Nov 29, 2002:
575: modified b.c (with tiny changes in main and run) to support
576: locales, using strcoll and iswhatever tests for posix character
577: classes. thanks to ruslan ermilov (ru@freebsd.org) for code.
578: the function isblank doesn't seem to have propagated to any
579: header file near me, so it's there explicitly. not properly
580: tested on non-ascii character sets by me.
581:
582: Jun 28, 2002:
583: modified run/format() and tran/getsval() to do a slightly better
584: job on using OFMT for output from print and CONVFMT for other
1.25 millert 585: number->string conversions, as promised by posix and done by
1.11 millert 586: gawk and mawk. there are still places where it doesn't work
587: right if CONVFMT is changed; by then the STR attribute of the
588: variable has been irrevocably set. thanks to arnold robbins for
589: code and examples.
590:
591: fixed subtle bug in format that could get core dump. thanks to
592: Jaromir Dolecek <jdolecek@NetBSD.org> for finding and fixing.
593: minor cleanup in run.c / format() at the same time.
594:
595: added some tests for null pointers to debugging printf's, which
596: were never intended for external consumption. thanks to dave
597: kerns (dkerns@lucent.com) for pointing this out.
598:
599: GNU compatibility: an empty regexp matches anything (thanks to
600: dag-erling smorgrav, des@ofug.org). subject to reversion if
601: this does more harm than good.
602:
603: pervasive small changes to make things more const-correct, as
604: reported by gcc's -Wwrite-strings. as it says in the gcc manual,
605: this may be more nuisance than useful. provoked by a suggestion
606: and code from arnaud desitter, arnaud@nimbus.geog.ox.ac.uk
607:
608: minor documentation changes to note that this now compiles out
609: of the box on Mac OS X.
610:
611: Feb 10, 2002:
612: changed types in posix chars structure to quiet solaris cc.
613:
614: Jan 1, 2002:
615: fflush() or fflush("") flushes all files and pipes.
616:
1.25 millert 617: length(arrayname) returns number of elements; thanks to
1.11 millert 618: arnold robbins for suggestion.
619:
620: added a makefile.win to make it easier to build on windows.
621: based on dan allen's buildwin.bat.
622:
623: Nov 16, 2001:
624: added support for posix character class names like [:digit:],
625: which are not exactly shorter than [0-9] and perhaps no more
626: portable. thanks to dag-erling smorgrav for code.
627:
628: Feb 16, 2001:
629: removed -m option; no longer needed, and it was actually
630: broken (noted thanks to volker kiefel).
631:
632: Feb 10, 2001:
633: fixed an appalling bug in gettok: any sequence of digits, +,-, E, e,
634: and period was accepted as a valid number if it started with a period.
635: this would never have happened with the lex version.
636:
637: other 1-character botches, now fixed, include a bare $ and a
638: bare " at the end of the input.
639:
640: Feb 7, 2001:
641: more (const char *) casts in b.c and tran.c to silence warnings.
1.8 millert 642:
1.10 millert 643: Nov 15, 2000:
644: fixed a bug introduced in august 1997 that caused expressions
645: like $f[1] to be syntax errors. thanks to arnold robbins for
646: noticing this and providing a fix.
647:
648: Oct 30, 2000:
649: fixed some nextfile bugs: not handling all cases. thanks to
650: arnold robbins for pointing this out. new regressions added.
651:
652: close() is now a function. it returns whatever the library
653: fclose returns, and -1 for closing a file or pipe that wasn't
654: opened.
655:
656: Sep 24, 2000:
657: permit \n explicitly in character classes; won't work right
658: if comes in as "[\n]" but ok as /[\n]/, because of multiple
659: processing of \'s. thanks to arnold robbins.
660:
661: July 5, 2000:
662: minor fiddles in tran.c to keep compilers happy about uschar.
663: thanks to norman wilson.
664:
665: May 25, 2000:
666: yet another attempt at making 8-bit input work, with another
1.25 millert 667: band-aid in b.c (member()), and some (uschar) casts to head
1.10 millert 668: off potential errors in subscripts (like isdigit). also
669: changed HAT to NCHARS-2. thanks again to santiago vila.
670:
671: changed maketab.c to ignore apparently out of range definitions
672: instead of halting; new freeBSD generates one. thanks to
673: jon snader <jsnader@ix.netcom.com> for pointing out the problem.
674:
675: May 2, 2000:
676: fixed an 8-bit problem in b.c by making several char*'s into
677: unsigned char*'s. not clear i have them all yet. thanks to
678: Santiago Vila <sanvila@unex.es> for the bug report.
679:
680: Apr 21, 2000:
681: finally found and fixed a memory leak in function call; it's
682: been there since functions were added ~1983. thanks to
683: jon bentley for the test case that found it.
684:
685: added test in envinit to catch environment "variables" with
1.12 otto 686: names beginning with '='; thanks to Berend Hasselman.
1.10 millert 687:
688: Jul 28, 1999:
689: added test in defn() to catch function foo(foo), which
690: otherwise recurses until core dump. thanks to arnold
691: robbins for noticing this.
692:
1.9 millert 693: Jun 20, 1999:
694: added *bp in gettok in lex.c; appears possible to exit function
695: without terminating the string. thanks to russ cox.
696:
697: Jun 2, 1999:
698: added function stdinit() to run to initialize files[] array,
699: in case stdin, etc., are not constants; some compilers care.
700:
701: May 10, 1999:
702: replaced the ERROR ... FATAL, etc., macros with functions
703: based on vprintf, to avoid problems caused by overrunning
704: fixed-size errbuf array. thanks to ralph corderoy for the
705: impetus, and for pointing out a string termination bug in
706: qstring as well.
707:
708: Apr 21, 1999:
709: fixed bug that caused occasional core dumps with commandline
710: variable with value ending in \. (thanks to nelson beebe for
711: the test case.)
712:
1.8 millert 713: Apr 16, 1999:
1.25 millert 714: with code kindly provided by Bruce Lilly, awk now parses
1.8 millert 715: /=/ and similar constructs more sensibly in more places.
1.10 millert 716: Bruce also provided some helpful test cases.
1.8 millert 717:
718: Apr 5, 1999:
719: changed true/false to True/False in run.c to make it
720: easier to compile with C++. Added some casts on malloc
721: and realloc to be honest about casts; ditto. changed
722: ltype int to long in struct rrow to reduce some 64-bit
723: complaints; other changes scattered throughout for the
724: same purpose. thanks to Nelson Beebe for these portability
725: improvements.
726:
727: removed some horrible pointer-int casting in b.c and elsewhere
728: by adding ptoi and itonp to localize the casts, which are
729: all benign. fixed one incipient bug that showed up on sgi
730: in 64-bit mode.
731:
732: reset lineno for new source file; include filename in error
733: message. also fixed line number error in continuation lines.
734: (thanks to Nelson Beebe for both of these.)
735:
736: Mar 24, 1999:
737: Nelson Beebe notes that irix 5.3 yacc dies with a bogus
738: error; use a newer version or switch to bison, since sgi
739: is unlikely to fix it.
1.1 tholo 740:
1.7 millert 741: Mar 5, 1999:
1.9 millert 742: changed isnumber to is_number to avoid the problem caused by
743: versions of ctype.h that include the name isnumber.
1.7 millert 744:
745: distribution now includes a script for building on a Mac,
746: thanks to Dan Allen.
747:
748: Feb 20, 1999:
749: fixed memory leaks in run.c (call) and tran.c (setfval).
750: thanks to Stephen Nutt for finding these and providing the fixes.
751:
752: Jan 13, 1999:
753: replaced srand argument by (unsigned int) in run.c;
754: avoids problem on Mac and potentially on Unix & Windows.
755: thanks to Dan Allen.
756:
757: added a few (int) casts to silence useless compiler warnings.
758: e.g., errorflag= in run.c jump().
759:
760: added proctab.c to the bundle outout; one less thing
761: to have to compile out of the box.
762:
763: added calls to _popen and _pclose to the win95 stub for
764: pipes (thanks to Steve Adams for this helpful suggestion).
765: seems to work, though properties are not well understood
766: by me, and it appears that under some circumstances the
767: pipe output is truncated. Be careful.
768:
769: Oct 19, 1998:
770: fixed a couple of bugs in getrec: could fail to update $0
1.25 millert 771: after a getline var; because inputFS wasn't initialized,
1.7 millert 772: could split $0 on every character, a misleading diversion.
773:
774: fixed caching bug in makedfa: LRU was actually removing
775: least often used.
776:
777: thanks to ross ridge for finding these, and for providing
778: great bug reports.
779:
780: May 12, 1998:
781: fixed potential bug in readrec: might fail to update record
782: pointer after growing. thanks to dan levy for spotting this
783: and suggesting the fix.
784:
785: Mar 12, 1998:
786: added -V to print version number and die.
1.19 millert 787:
788: [notify dave kerns, dkerns@dacsoup.ih.lucent.com]
1.7 millert 789:
790: Feb 11, 1998:
791: subtle silent bug in lex.c: if the program ended with a number
792: longer than 1 digit, part of the input would be pushed back and
793: parsed again because token buffer wasn't terminated right.
794: example: awk 'length($0) > 10'. blush. at least i found it
795: myself.
796:
797: Aug 31, 1997:
798: s/adelete/awkdelete/: SGI uses this in malloc.h.
799: thanks to nelson beebe for pointing this one out.
800:
801: Aug 21, 1997:
802: fixed some bugs in sub and gsub when replacement includes \\.
803: this is a dark, horrible corner, but at least now i believe that
804: the behavior is the same as gawk and the intended posix standard.
805: thanks to arnold robbins for advice here.
806:
807: Aug 9, 1997:
808: somewhat regretfully, replaced the ancient lex-based lexical
809: analyzer with one written in C. it's longer, generates less code,
810: and more portable; the old one depended too much on mysterious
811: properties of lex that were not preserved in other environments.
812: in theory these recognize the same language.
813:
814: now using strtod to test whether a string is a number, instead of
815: the convoluted original function. should be more portable and
816: reliable if strtod is implemented right.
817:
818: removed now-pointless optimization in makefile that tries to avoid
819: recompilation when awkgram.y is changed but symbols are not.
820:
821: removed most fixed-size arrays, though a handful remain, some
822: of which are unchecked. you have been warned.
823:
824: Aug 4, 1997:
825: with some trepidation, replaced the ancient code that managed
826: fields and $0 in fixed-size arrays with arrays that grow on
827: demand. there is still some tension between trying to make this
828: run fast and making it clean; not sure it's right yet.
829:
830: the ill-conceived -mr and -mf arguments are now useful only
831: for debugging. previous dynamic string code removed.
832:
833: numerous other minor cleanups along the way.
1.1 tholo 834:
1.7 millert 835: Jul 30, 1997:
836: using code provided by dan levy (to whom profuse thanks), replaced
837: fixed-size arrays and awkward kludges by a fairly uniform mechanism
838: to grow arrays as needed for printf, sub, gsub, etc.
1.1 tholo 839:
1.7 millert 840: Jul 23, 1997:
841: falling off the end of a function returns "" and 0, not 0.
842: thanks to arnold robbins.
1.1 tholo 843:
1.7 millert 844: Jun 17, 1997:
845: replaced several fixed-size arrays by dynamically-created ones
846: in run.c; added overflow tests to some previously unchecked cases.
847: getline, toupper, tolower.
1.1 tholo 848:
1.7 millert 849: getline code is still broken in that recursive calls may wind
850: up using the same space. [fixed later]
1.1 tholo 851:
1.7 millert 852: increased RECSIZE to 8192 to push problems further over the horizon.
1.1 tholo 853:
1.7 millert 854: added \r to \n as input line separator for programs, not data.
855: damn CRLFs.
1.1 tholo 856:
1.7 millert 857: modified format() to permit explicit printf("%c", 0) to include
858: a null byte in output. thanks to ken stailey for the fix.
1.1 tholo 859:
1.7 millert 860: added a "-safe" argument that disables file output (print >,
861: print >>), process creation (cmd|getline, print |, system), and
862: access to the environment (ENVIRON). this is a first approximation
863: to a "safe" version of awk, but don't rely on it too much. thanks
864: to joan feigenbaum and matt blaze for the inspiration long ago.
1.1 tholo 865:
1.7 millert 866: Jul 8, 1996:
867: fixed long-standing bug in sub, gsub(/a/, "\\\\&"); thanks to
868: ralph corderoy.
1.1 tholo 869:
1.7 millert 870: Jun 29, 1996:
871: fixed awful bug in new field splitting; didn't get all the places
872: where input was done.
1.1 tholo 873:
1.7 millert 874: Jun 28, 1996:
875: changed field-splitting to conform to posix definition: fields are
876: split using the value of FS at the time of input; it used to be
877: the value when the field or NF was first referred to, a much less
878: predictable definition. thanks to arnold robbins for encouragement
879: to do the right thing.
1.1 tholo 880:
1.7 millert 881: May 28, 1996:
882: fixed appalling but apparently unimportant bug in parsing octal
883: numbers in reg exprs.
1.1 tholo 884:
1.7 millert 885: explicit hex in reg exprs now limited to 2 chars: \xa, \xaa.
1.1 tholo 886:
1.7 millert 887: May 27, 1996:
888: cleaned up some declarations so gcc -Wall is now almost silent.
1.1 tholo 889:
1.7 millert 890: makefile now includes backup copies of ytab.c and lexyy.c in case
891: one makes before looking; it also avoids recreating lexyy.c unless
892: really needed.
1.1 tholo 893:
1.7 millert 894: s/aprintf/awkprint, s/asprintf/awksprintf/ to avoid some name clashes
895: with unwisely-written header files.
1.1 tholo 896:
1.7 millert 897: thanks to jeffrey friedl for several of these.
1.1 tholo 898:
1.7 millert 899: May 26, 1996:
900: an attempt to rationalize the (unsigned) char issue. almost all
901: instances of unsigned char have been removed; the handful of places
902: in b.c where chars are used as table indices have been hand-crafted.
903: added some latin-1 tests to the regression, but i'm not confident;
904: none of my compilers seem to care much. thanks to nelson beebe for
905: pointing out some others that do care.
1.1 tholo 906:
1.7 millert 907: May 2, 1996:
908: removed all register declarations.
1.1 tholo 909:
1.7 millert 910: enhanced split(), as in gawk, etc: split(s, a, "") splits s into
911: a[1]...a[length(s)] with each character a single element.
1.1 tholo 912:
1.7 millert 913: made the same changes for field-splitting if FS is "".
1.1 tholo 914:
1.7 millert 915: added nextfile, as in gawk: causes immediate advance to next
916: input file. (thanks to arnold robbins for inspiration and code).
1.1 tholo 917:
1.7 millert 918: small fixes to regexpr code: can now handle []], [[], and
1.25 millert 919: variants; [] is now a syntax error, rather than matching
1.7 millert 920: everything; [z-a] is now empty, not z. far from complete
921: or correct, however. (thanks to jeffrey friedl for pointing out
922: some awful behaviors.)
1.1 tholo 923:
1.7 millert 924: Apr 29, 1996:
1.12 otto 925: replaced uchar by uschar everywhere; apparently some compilers
1.7 millert 926: usurp this name and this causes conflicts.
1.1 tholo 927:
1.7 millert 928: fixed call to time in run.c (bltin); arg is time_t *.
1.1 tholo 929:
1.7 millert 930: replaced horrible pointer/long punning in b.c by a legitimate
931: union. should be safer on 64-bit machines and cleaner everywhere.
932: (thanks to nelson beebe for pointing out some of these problems.)
1.1 tholo 933:
1.7 millert 934: replaced nested comments by #if 0...#endif in run.c, lib.c.
1.1 tholo 935:
1.7 millert 936: removed getsval, setsval, execute macros from run.c and lib.c.
937: machines are 100x faster than they were when these macros were
938: first used.
1.1 tholo 939:
1.7 millert 940: revised filenames: awk.g.y => awkgram.y, awk.lx.l => awklex.l,
941: y.tab.[ch] => ytab.[ch], lex.yy.c => lexyy.c, all in the aid of
942: portability to nameless systems.
1.1 tholo 943:
1.7 millert 944: "make bundle" now includes yacc and lex output files for recipients
945: who don't have yacc or lex.
1.1 tholo 946:
1.7 millert 947: Aug 15, 1995:
948: initialized Cells in setsymtab more carefully; some fields
949: were not set. (thanks to purify, all of whose complaints i
950: think i now understand.)
1.1 tholo 951:
1.7 millert 952: fixed at least one error in gsub that looked at -1-th element
953: of an array when substituting for a null match (e.g., $).
1.1 tholo 954:
1.7 millert 955: delete arrayname is now legal; it clears the elements but leaves
956: the array, which may not be the right behavior.
1.1 tholo 957:
1.7 millert 958: modified makefile: my current make can't cope with the test used
959: to avoid unnecessary yacc invocations.
1.1 tholo 960:
1.7 millert 961: Jul 17, 1995:
962: added dynamically growing strings to awk.lx.l and b.c
963: to permit regular expressions to be much bigger.
964: the state arrays can still overflow.
1.1 tholo 965:
1.7 millert 966: Aug 24, 1994:
967: detect duplicate arguments in function definitions (mdm).
1.1 tholo 968:
1.7 millert 969: May 11, 1994:
970: trivial fix to printf to limit string size in sub().
1.1 tholo 971:
1.7 millert 972: Apr 22, 1994:
973: fixed yet another subtle self-assignment problem:
974: $1 = $2; $1 = $1 clobbered $1.
1.1 tholo 975:
1.7 millert 976: Regression tests now use private echo, to avoid quoting problems.
1.1 tholo 977:
1.7 millert 978: Feb 2, 1994:
979: changed error() to print line number as %d, not %g.
1.1 tholo 980:
1.7 millert 981: Jul 23, 1993:
982: cosmetic changes: increased sizes of some arrays,
983: reworded some error messages.
1.1 tholo 984:
1.7 millert 985: added CONVFMT as in posix (just replaced OFMT in getsval)
1.1 tholo 986:
1.7 millert 987: FILENAME is now "" until the first thing that causes a file
988: to be opened.
1.1 tholo 989:
1.7 millert 990: Nov 28, 1992:
991: deleted yyunput and yyoutput from proto.h;
992: different versions of lex give these different declarations.
1.1 tholo 993:
1.7 millert 994: May 31, 1992:
995: added -mr N and -mf N options: more record and fields.
996: these really ought to adjust automatically.
1.1 tholo 997:
1.7 millert 998: cleaned up some error messages; "out of space" now means
999: malloc returned NULL in all cases.
1.1 tholo 1000:
1.7 millert 1001: changed rehash so that if it runs out, it just returns;
1002: things will continue to run slow, but maybe a bit longer.
1.1 tholo 1003:
1.7 millert 1004: Apr 24, 1992:
1005: remove redundant close of stdin when using -f -.
1.1 tholo 1006:
1.7 millert 1007: got rid of core dump with -d; awk -d just prints date.
1.1 tholo 1008:
1.7 millert 1009: Apr 12, 1992:
1010: added explicit check for /dev/std(in,out,err) in redirection.
1011: unlike gawk, no /dev/fd/n yet.
1.1 tholo 1012:
1.7 millert 1013: added (file/pipe) builtin. hard to test satisfactorily.
1014: not posix.
1.1 tholo 1015:
1.7 millert 1016: Feb 20, 1992:
1017: recompile after abortive changes; should be unchanged.
1.1 tholo 1018:
1.7 millert 1019: Dec 2, 1991:
1020: die-casting time: converted to ansi C, installed that.
1.1 tholo 1021:
1.7 millert 1022: Nov 30, 1991:
1023: fixed storage leak in freefa, failing to recover [N]CCL.
1024: thanks to Bill Jones (jones@cs.usask.ca)
1.1 tholo 1025:
1.7 millert 1026: Nov 19, 1991:
1027: use RAND_MAX instead of literal in builtin().
1.1 tholo 1028:
1.7 millert 1029: Nov 12, 1991:
1030: cranked up some fixed-size arrays in b.c, and added a test for
1031: overflow in penter. thanks to mark larsen.
1.1 tholo 1032:
1.7 millert 1033: Sep 24, 1991:
1034: increased buffer in gsub. a very crude fix to a general problem.
1035: and again on Sep 26.
1.1 tholo 1036:
1.7 millert 1037: Aug 18, 1991:
1038: enforce variable name syntax for commandline variables: has to
1039: start with letter or _.
1.1 tholo 1040:
1.7 millert 1041: Jul 27, 1991:
1042: allow newline after ; in for statements.
1.1 tholo 1043:
1.7 millert 1044: Jul 21, 1991:
1045: fixed so that in self-assignment like $1=$1, side effects
1046: like recomputing $0 take place. (this is getting subtle.)
1.1 tholo 1047:
1.7 millert 1048: Jun 30, 1991:
1049: better test for detecting too-long output record.
1.1 tholo 1050:
1.7 millert 1051: Jun 2, 1991:
1052: better defense against very long printf strings.
1053: made break and continue illegal outside of loops.
1.1 tholo 1054:
1.7 millert 1055: May 13, 1991:
1056: removed extra arg on gettemp, tempfree. minor error message rewording.
1.1 tholo 1057:
1058: May 6, 1991:
1059: fixed silly bug in hex parsing in hexstr().
1060: removed an apparently unnecessary test in isnumber().
1061: warn about weird printf conversions.
1062: fixed unchecked array overwrite in relex().
1063:
1064: changed for (i in array) to access elements in sorted order.
1065: then unchanged it -- it really does run slower in too many cases.
1066: left the code in place, commented out.
1067:
1.7 millert 1068: Feb 10, 1991:
1069: check error status on all writes, to avoid banging on full disks.
1.1 tholo 1070:
1.7 millert 1071: Jan 28, 1991:
1072: awk -f - reads the program from stdin.
1.1 tholo 1073:
1.7 millert 1074: Jan 11, 1991:
1075: failed to set numeric state on $0 in cmd|getline context in run.c.
1.1 tholo 1076:
1.7 millert 1077: Nov 2, 1990:
1078: fixed sleazy test for integrality in getsval; use modf.
1.1 tholo 1079:
1.7 millert 1080: Oct 29, 1990:
1081: fixed sleazy buggy code in lib.c that looked (incorrectly) for
1082: too long input lines.
1.1 tholo 1083:
1.7 millert 1084: Oct 14, 1990:
1085: fixed the bug on p. 198 in which it couldn't deduce that an
1086: argument was an array in some contexts. replaced the error
1087: message in intest() by code that damn well makes it an array.
1.1 tholo 1088:
1.7 millert 1089: Oct 8, 1990:
1090: fixed horrible bug: types and values were not preserved in
1091: some kinds of self-assignment. (in assign().)
1.1 tholo 1092:
1.7 millert 1093: Aug 24, 1990:
1094: changed NCHARS to 256 to handle 8-bit characters in strings
1095: presented to match(), etc.
1.1 tholo 1096:
1.7 millert 1097: Jun 26, 1990:
1098: changed struct rrow (awk.h) to use long instead of int for lval,
1099: since cfoll() stores a pointer in it. now works better when int's
1100: are smaller than pointers!
1.1 tholo 1101:
1.7 millert 1102: May 6, 1990:
1103: AVA fixed the grammar so that ! is uniformly of the same precedence as
1104: unary + and -. This renders illegal some constructs like !x=y, which
1105: now has to be parenthesized as !(x=y), and makes others work properly:
1106: !x+y is (!x)+y, and x!y is x !y, not two pattern-action statements.
1107: (These problems were pointed out by Bob Lenk of Posix.)
1.1 tholo 1108:
1.7 millert 1109: Added \x to regular expressions (already in strings).
1110: Limited octal to octal digits; \8 and \9 are not octal.
1111: Centralized the code for parsing escapes in regular expressions.
1112: Added a bunch of tests to T.re and T.sub to verify some of this.
1.1 tholo 1113:
1.7 millert 1114: Feb 9, 1990:
1115: fixed null pointer dereference bug in main.c: -F[nothing]. sigh.
1.1 tholo 1116:
1.7 millert 1117: restored srand behavior: it returns the current seed.
1.1 tholo 1118:
1.7 millert 1119: Jan 18, 1990:
1120: srand now returns previous seed value (0 to start).
1.1 tholo 1121:
1.7 millert 1122: Jan 5, 1990:
1123: fix potential problem in tran.c -- something was freed,
1124: then used in freesymtab.
1.1 tholo 1125:
1.7 millert 1126: Oct 18, 1989:
1127: another try to get the max number of open files set with
1128: relatively machine-independent code.
1.1 tholo 1129:
1.7 millert 1130: small fix to input() in case of multiple reads after EOF.
1.1 tholo 1131:
1.7 millert 1132: Oct 11, 1989:
1133: FILENAME is now defined in the BEGIN block -- too many old
1134: programs broke.
1.1 tholo 1135:
1.7 millert 1136: "-" means stdin in getline as well as on the commandline.
1.1 tholo 1137:
1.7 millert 1138: added a bunch of casts to the code to tell the truth about
1139: char * vs. unsigned char *, a right royal pain. added a
1140: setlocale call to the front of main, though probably no one
1141: has it usefully implemented yet.
1.1 tholo 1142:
1.7 millert 1143: Aug 24, 1989:
1144: removed redundant relational tests against nullnode if parse
1145: tree already had a relational at that point.
1.1 tholo 1146:
1.7 millert 1147: Aug 11, 1989:
1148: fixed bug: commandline variable assignment has to look like
1149: var=something. (consider the man page for =, in file =.1)
1.1 tholo 1150:
1.7 millert 1151: changed number of arguments to functions to static arrays
1152: to avoid repeated malloc calls.
1.1 tholo 1153:
1.7 millert 1154: Aug 2, 1989:
1155: restored -F (space) separator
1.1 tholo 1156:
1.7 millert 1157: Jul 30, 1989:
1158: added -v x=1 y=2 ... for immediate commandline variable assignment;
1159: done before the BEGIN block for sure. they have to precede the
1160: program if the program is on the commandline.
1161: Modified Aug 2 to require a separate -v for each assignment.
1.1 tholo 1162:
1.7 millert 1163: Jul 10, 1989:
1164: fixed ref-thru-zero bug in environment code in tran.c
1.1 tholo 1165:
1.7 millert 1166: Jun 23, 1989:
1167: add newline to usage message.
1.1 tholo 1168:
1.7 millert 1169: Jun 14, 1989:
1170: added some missing ansi printf conversion letters: %i %X %E %G.
1171: no sensible meaning for h or L, so they may not do what one expects.
1.1 tholo 1172:
1.7 millert 1173: made %* conversions work.
1.1 tholo 1174:
1.7 millert 1175: changed x^y so that if n is a positive integer, it's done
1176: by explicit multiplication, thus achieving maximum accuracy.
1177: (this should be done by pow() but it seems not to be locally.)
1178: done to x ^= y as well.
1.1 tholo 1179:
1.7 millert 1180: Jun 4, 1989:
1181: ENVIRON array contains environment: if shell variable V=thing,
1182: ENVIRON["V"] is "thing"
1.1 tholo 1183:
1.7 millert 1184: multiple -f arguments permitted. error reporting is naive.
1185: (they were permitted before, but only the last was used.)
1.1 tholo 1186:
1.7 millert 1187: fixed a really stupid botch in the debugging macro dprintf
1.1 tholo 1188:
1.7 millert 1189: fixed order of evaluation of commandline assignments to match
1190: what the book claims: an argument of the form x=e is evaluated
1191: at the time it would have been opened if it were a filename (p 63).
1192: this invalidates the suggested answer to ex 4-1 (p 195).
1.1 tholo 1193:
1.7 millert 1194: removed some code that permitted -F (space) fieldseparator,
1195: since it didn't quite work right anyway. (restored aug 2)
1.1 tholo 1196:
1.7 millert 1197: Apr 27, 1989:
1198: Line number now accumulated correctly for comment lines.
1.1 tholo 1199:
1.7 millert 1200: Apr 26, 1989:
1201: Debugging output now includes a version date,
1202: if one compiles it into the source each time.
1.1 tholo 1203:
1.7 millert 1204: Apr 9, 1989:
1205: Changed grammar to prohibit constants as 3rd arg of sub and gsub;
1206: prevents class of overwriting-a-constant errors. (Last one?)
1207: This invalidates the "banana" example on page 43 of the book.
1.1 tholo 1208:
1.7 millert 1209: Added \a ("alert"), \v (vertical tab), \xhhh (hexadecimal),
1210: as in ANSI, for strings. Rescinded the sloppiness that permitted
1211: non-octal digits in \ooo. Warning: not all compilers and libraries
1212: will be able to deal with \x correctly.
1.1 tholo 1213:
1.7 millert 1214: Jan 9, 1989:
1215: Fixed bug that caused tempcell list to contain a duplicate.
1216: The fix is kludgy.
1.1 tholo 1217:
1.7 millert 1218: Dec 17, 1988:
1219: Catches some more commandline errors in main.
1220: Removed redundant decl of modf in run.c (confuses some compilers).
1221: Warning: there's no single declaration of malloc, etc., in awk.h
1222: that seems to satisfy all compilers.
1.1 tholo 1223:
1.7 millert 1224: Dec 7, 1988:
1225: Added a bit of code to error printing to avoid printing nulls.
1226: (Not clear that it actually would.)
1.1 tholo 1227:
1.7 millert 1228: Nov 27, 1988:
1229: With fear and trembling, modified the grammar to permit
1230: multiple pattern-action statements on one line without
1231: an explicit separator. By definition, this capitulation
1232: to the ghost of ancient implementations remains undefined
1233: and thus subject to change without notice or apology.
1234: DO NOT COUNT ON IT.
1.1 tholo 1235:
1.7 millert 1236: Oct 30, 1988:
1237: Fixed bug in call() that failed to recover storage.
1.1 tholo 1238:
1.7 millert 1239: A warning is now generated if there are more arguments
1240: in the call than in the definition (in lieu of fixing
1241: another storage leak).
1.2 millert 1242:
1.7 millert 1243: Oct 20, 1988:
1244: Fixed %c: if expr is numeric, use numeric value;
1245: otherwise print 1st char of string value. still
1246: doesn't work if the value is 0 -- won't print \0.
1.2 millert 1247:
1.7 millert 1248: Added a few more checks for running out of malloc.
1.2 millert 1249:
1.7 millert 1250: Oct 12, 1988:
1251: Fixed bug in call() that freed local arrays twice.
1.5 kstailey 1252:
1.7 millert 1253: Fixed to handle deletion of non-existent array right;
1254: complains about attempt to delete non-array element.
1.6 kstailey 1255:
1.7 millert 1256: Sep 30, 1988:
1257: Now guarantees to evaluate all arguments of built-in
1258: functions, as in C; the appearance is that arguments
1259: are evaluated before the function is called. Places
1260: affected are sub (gsub was ok), substr, printf, and
1261: all the built-in arithmetic functions in bltin().
1262: A warning is generated if a bltin() is called with
1263: the wrong number of arguments.
1.6 kstailey 1264:
1.7 millert 1265: This requires changing makeprof on p167 of the book.
1.6 kstailey 1266:
1.7 millert 1267: Aug 23, 1988:
1268: setting FILENAME in BEGIN caused core dump, apparently
1269: because it was freeing space not allocated by malloc.
1.6 kstailey 1270:
1.7 millert 1271: July 24, 1988:
1272: fixed egregious error in toupper/tolower functions.
1273: still subject to rescinding, however.
1.6 kstailey 1274:
1.7 millert 1275: July 2, 1988:
1276: flush stdout before opening file or pipe
1.6 kstailey 1277:
1.7 millert 1278: July 2, 1988:
1279: performance bug in b.c/cgoto(): not freeing some sets of states.
1280: partial fix only right now, and the number of states increased
1281: to make it less obvious.
1.6 kstailey 1282:
1.7 millert 1283: June 1, 1988:
1284: check error status on close
1.6 kstailey 1285:
1.7 millert 1286: May 28, 1988:
1287: srand returns seed value it's using.
1288: see 1/18/90
1.6 kstailey 1289:
1.7 millert 1290: May 22, 1988:
1291: Removed limit on depth of function calls.
1.6 kstailey 1292:
1.7 millert 1293: May 10, 1988:
1294: Fixed lib.c to permit _ in commandline variable names.
1.6 kstailey 1295:
1.7 millert 1296: Mar 25, 1988:
1297: main.c fixed to recognize -- as terminator of command-
1298: line options. Illegal options flagged.
1299: Error reporting slightly cleaned up.
1.6 kstailey 1300:
1.7 millert 1301: Dec 2, 1987:
1302: Newer C compilers apply a strict scope rule to extern
1303: declarations within functions. Two extern declarations in
1304: lib.c and tran.c have been moved to obviate this problem.
1.6 kstailey 1305:
1.7 millert 1306: Oct xx, 1987:
1307: Reluctantly added toupper and tolower functions.
1308: Subject to rescinding without notice.
1.6 kstailey 1309:
1.7 millert 1310: Sep 17, 1987:
1311: Error-message printer had printf(s) instead of
1312: printf("%s",s); got core dumps when the message
1313: included a %.
1.6 kstailey 1314:
1.7 millert 1315: Sep 12, 1987:
1316: Very long printf strings caused core dump;
1317: fixed aprintf, asprintf, format to catch them.
1318: Can still get a core dump in printf itself.
1.6 kstailey 1319:
1320:
![[BACK]](/icons/back.gif){kind=icon}
Return to FIXES CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [local] / src / usr.bin / awk