Annotation of src/usr.bin/awk/FIXES, Revision 1.36
1.36 ! millert 1: /* $OpenBSD: FIXES,v 1.35 2020/06/26 15:57:39 millert Exp $ */
1.1 tholo 2: /****************************************************************
1.6 kstailey 3: Copyright (C) Lucent Technologies 1997
1.1 tholo 4: All Rights Reserved
5:
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7: its documentation for any purpose and without fee is hereby
8: granted, provided that the above copyright notice appear in all
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10: permission notice and warranty disclaimer appear in supporting
1.6 kstailey 11: documentation, and that the name Lucent Technologies or any of
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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.
1.36 ! millert 28:
! 29: July 2, 2020:
! 30: Merge PRs 85 and 86 which fix regressions. Thanks to
! 31: Tim van der Molen for the fixes.
1.35 millert 32:
33: June 25, 2020:
34: Merge PRs 82 and 84. The latter fixes issue #83. Thanks to
35: Todd Miller and awkfan77.
1.34 millert 36:
37: June 12, 2020:
38: Clear errno before calling errcheck to avoid any spurious errors
39: left over from previous calls that may have set it. Thanks to
40: Todd Miller for the fix, from PR #80.
41:
42: Fix Issue #78 by allowing \r to follow floating point numbers in
43: lib.c:is_number. Thanks to GitHub user ajcarr for the report
44: and to Arnold Robbins for the fix.
1.33 millert 45:
46: June 5, 2020:
47: In fldbld(), make sure that inputFS is set before trying to
48: use it. Thanks to Steffen Nurpmeso <steffen@sdaoden.eu>
49: for the report.
50:
51: May 5, 2020:
52: Fix checks for compilers that can handle noreturn. Thanks to
53: GitHub user enh-google for pointing it out. Closes Issue #79.
54:
55: April 16, 2020:
56: Handle old compilers that don't support C11 (for noreturn).
57: Thanks to Arnold Robbins.
58:
59: April 5, 2020:
60: Use <stdnoreturn.h> and noreturn instead of GCC attributes.
61: Thanks to GitHub user awkfan77. Closes PR #77.
1.30 millert 62:
1.32 millert 63: February 28, 2020:
64: More cleanups from Christos Zoulas: notably backslash continuation
65: inside strings removes the newline and a fix for RS = "^a".
66: Fix for address sanitizer-found problem. Thanks to GitHub user
67: enh-google.
68:
69: February 19, 2020:
70: More small cleanups from Christos Zoulas.
71:
72: February 18, 2020:
73: Additional cleanups from Christos Zoulas. It's no longer necessary
74: to use the -y flag to bison.
75:
76: February 6, 2020:
77: Additional small cleanups from Christos Zoulas. awk is now
78: a little more robust about reporting I/O errors upon exit.
79:
1.31 millert 80: January 31, 2020:
81: Merge PR #70, which avoids use of variable length arrays. Thanks
82: to GitHub user michaelforney. Fix issue #60 ({0} in interval
1.32 millert 83: expressions doesn't work). Also get all tests working again.
84: Thanks to Arnold Robbins.
1.31 millert 85:
86: January 24, 2020:
87: A number of small cleanups from Christos Zoulas. Add the close
88: on exec flag to files/pipes opened for redirection; courtesy of
89: Arnold Robbins.
90:
91: January 19, 2020:
92: If POSIXLY_CORRECT is set in the environment, then sub and gsub
93: use POSIX rules for multiple backslashes. This fixes Issue #66,
94: while maintaining backwards compatibility.
95:
96: January 9, 2020:
97: Input/output errors on closing files are now fatal instead of
98: mere warnings. Thanks to Martijn Dekker <martijn@inlv.org>.
99:
1.30 millert 100: January 5, 2020:
101: Fix a bug in the concatentation of two string constants into
102: one done in the grammar. Fixes GitHub issue #61. Thanks
103: to GitHub user awkfan77 for pointing out the direction for
104: the fix. New test T.concat added to the test suite.
105: Fix a few memory leaks reported by valgrind, as well.
106:
107: December 27, 2019:
108: Fix a bug whereby a{0,3} could match four a's. Thanks to
109: "Anonymous AWK fan" for the report.
110:
111: December 11, 2019:
112: Further printf-related fixes for 32 bit systems.
113: Thanks again to Christos Zoulas.
114:
115: December 8, 2019:
116: Fix the return value of sprintf("%d") on 32 bit systems.
117: Thanks to Jim Lowe for the report and to Christos Zoulas
118: for the fix.
1.29 millert 119:
120: November 10, 2019:
121: Convert a number of Boolean integer variables into
122: actual bools. Convert compile_time variable into an
123: enum and simplify some of the related code. Thanks
124: to Arnold Robbins.
125:
126: November 8, 2019:
127: Fix from Ori Bernstein to get UTF-8 characters instead of
128: bytes when FS = "". This is currently the only bit of
129: the One True Awk that understands multibyte characters.
130: From Arnold Robbins, apply some cleanups in the test suite.
1.28 millert 131:
132: October 25, 2019:
133: More fixes and cleanups from NetBSD, courtesy of Christos
134: Zoulas. Merges PRs 54 and 55.
135:
136: October 24, 2019:
137: Import second round of code cleanups from NetBSD. Much thanks
1.31 millert 138: to Christos Zoulas (GitHub user zoulasc). Merges PR 53.
1.28 millert 139: Add an optimization for string concatenation, also from
140: Christos.
1.27 millert 141:
142: October 17, 2019:
143: Import code cleanups from NetBSD. Much thanks to Christos
1.31 millert 144: Zoulas (GitHub user zoulasc). Merges PR 51.
1.26 millert 145:
146: October 6, 2019:
147: Import code from NetBSD awk that implements RS as a regular
148: expression.
1.23 millert 149:
1.25 millert 150: September 10, 2019:
151: Fixes for various array / memory overruns found via gcc's
1.31 millert 152: -fsanitize=unknown. Thanks to Alexander Richardson (GitHub
1.25 millert 153: user arichardson). Merges PRs 47 and 48.
154:
155: July 28, 2019:
156: Import grammar optimization from NetBSD: Two string constants
157: concatenated together get turned into a single string.
158:
159: July 26, 2019:
160: Support POSIX-specified C-style escape sequences "\a" (alarm)
161: and "\v" (vertical tab) in command line arguments and regular
162: expressions, further to the support for them in strings added on
163: Apr 9, 1989. These now no longer match as literal "a" and "v"
164: characters (as they don't on other awk implementations).
165: Thanks to Martijn Dekker.
166:
167: July 17, 2019:
168: Pull in a number of code cleanups and minor fixes from
169: Warner Losh's bsd-ota branch. The only user visible change
170: is the use of random(3) as the random number generator.
171: Thanks to Warner Losh for collecting all these fixes in
172: one easy place to get them from.
173:
174: July 16, 2019:
175: Fix field splitting to use FS value as of the time a record
176: was read or assigned to. Thanks to GitHub user Cody Mello (melloc)
177: for the fix. (Merged from his branch, via PR #42.) Updated
178: testdir/T.split per said PR as well.
179:
180: June 24, 2019:
181: Extract awktest.tar into testdir directory. Add some very
182: simple mechanics to the makefile for running the tests and
183: for cleaning up. No changes to awk itself.
184:
1.24 millert 185: June 17, 2019:
186: Disallow deleting SYMTAB and its elements, which creates
187: use-after-free bugs. Thanks to GitHub user Cody Mello (melloc)
188: for the fix. (Merged from PR #43.)
189:
190: June 5, 2019:
191: Allow unmatched right parenthesis in a regular expression to
192: be treated literally. Fixes Issue #40. Thanks to GitHub user
193: Warner Losh (bsdimp) for the report. Thanks to Arnold Robbins
194: for the fix.
195:
196: May 29,2019:
197: Fix check for command line arguments to no longer require that
198: first character after '=' not be another '='. Reverts change of
199: August 11, 1989. Thanks to GitHub user Jamie Landeg Jones for
200: pointing out the issue; from Issue #38.
201:
202: Apr 7, 2019:
203: Update awktest.tar(p.50) to use modern options to sort. Needed
204: for Android development. Thanks to GitHub user mohd-akram (Mohamed
205: Akram). From Issue #33.
206:
207: Mar 12, 2019:
208: Added very simplistic support for cross-compiling in the
209: makefile. We are NOT going to go in the direction of the
210: autotools, though. Thanks to GitHub user nee-san for
211: the basic change. (Merged from PR #34.)
212:
1.23 millert 213: Mar 5, 2019:
214: Added support for POSIX-standard interval expressions (a.k.a.
215: bounds, a.k.a. repetition expressions) in regular expressions,
216: backported (via NetBSD) from Apple awk-24 (20070501).
217: Thanks to Martijn Dekker <martijn@inlv.org> for the port.
218: (Merged from PR #30.)
219:
220: Mar 3, 2019:
221: Merge PRs as follows:
222: #12: Avoid undefined behaviour when using ctype(3) functions in
223: relex(). Thanks to GitHub user iamleot.
224: #31: Make getline handle numeric strings, and update FIXES. Thanks
1.24 millert 225: to GitHub user arnoldrobbins.
1.23 millert 226: #32: maketab: support build systems with read-only source. Thanks
227: to GitHub user enh.
1.22 millert 228:
229: Jan 25, 2019:
230: Make getline handle numeric strings properly in all cases.
231: (Thanks, Arnold.)
232:
233: Jan 21, 2019:
234: Merged a number of small fixes from GitHub pull requests.
235: Thanks to GitHub users Arnold Robbins (arnoldrobbins),
236: Cody Mello (melloc) and Christoph Junghans (junghans).
237: PR numbers: 13-21, 23, 24, 27.
1.21 millert 238:
239: Oct 25, 2018:
240: Added test in maketab.c to prevent generating a proctab entry
241: for YYSTYPE_IS_DEFINED. It was harmless but some gcc settings
242: generated a warning message. Thanks to Nan Xiao for report.
1.20 millert 243:
244: Aug 27, 2018:
245: Disallow '$' in printf formats; arguments evaluated in order
246: and printed in order.
247:
248: Added some casts to silence warnings on debugging printfs.
249: (Thanks, Arnold.)
1.18 millert 250:
1.19 millert 251: Aug 23, 2018:
252: A long list of fixes courtesy of Arnold Robbins,
253: to whom profound thanks.
254:
255: 1. ofs-rebuild: OFS value used to rebuild the record was incorrect.
256: Fixed August 19, 2014. Revised fix August 2018.
257:
258: 2. system-status: Instead of a floating-point division by 256, use
259: the wait(2) macros to create a reasonable exit status.
260: Fixed March 12, 2016.
261:
262: 3. space: Use provided xisblank() function instead of ispace() for
263: matching [[:blank:]].
264:
265: 4. a-format: Add POSIX standard %a and %A to supported formats. Check
266: at runtime that this format is available.
267:
268: 5. decr-NF: Decrementing NF did not change $0. This is a decades-old
269: bug. There are interactions with the old and new value of OFS as well.
270: Most of the fix came from the NetBSD awk.
271:
272: 6. string-conv: String conversions of scalars were sticky. Once a
273: conversion to string happened, even with OFMT, that value was used until
274: a new numeric value was assigned, even if OFMT differed from CONVFMT,
275: and also if CONVFMT changed.
276:
277: 7. unary-plus: Unary plus on a string constant returned the string.
278: Instead, it should convert the value to numeric and give that value.
279:
280: Also added Arnold's tests for these to awktest.tar as T.arnold.
281:
282: Aug 15, 2018:
283: fixed mangled awktest.tar (thanks, Arnold), posted all
284: current (very minor) fixes to github / onetrueawk
285:
1.18 millert 286: Jun 7, 2018:
287: (yes, a long layoff)
288: Updated some broken tests (beebe.tar, T.lilly)
289: [thanks to Arnold Robbins]
290:
291: Mar 26, 2015:
292: buffer overflow in error reporting; thanks to tobias ulmer
293: and john-mark gurney for spotting it and the fix.
294:
295: Feb 4, 2013:
296: cleaned up a handful of tests that didn't seem to actually
297: test for correct behavior: T.latin1, T.gawk.
298:
299: Jan 5, 2013:
300: added ,NULL initializer to static Cells in run.c; not really
301: needed but cleaner. Thanks to Michael Bombardieri.
1.17 millert 302:
303: Dec 20, 2012:
304: fiddled makefile to get correct yacc and bison flags. pick yacc
305: (linux) or bison (mac) as necessary.
306:
307: added __attribute__((__noreturn__)) to a couple of lines in
308: proto.h, to silence someone's enthusiastic checker.
309:
310: fixed obscure call by value bug in split(a[1],a) reported on
311: 9fans. the management of temporary values is just a mess; i
312: took a shortcut by making an extra string copy. thanks
313: to paul patience and arnold robbins for passing it on and for
314: proposed patches.
315:
316: tiny fiddle in setfval to eliminate -0 results in T.expr, which
317: has irritated me for 20+ years.
1.16 millert 318:
319: Aug 10, 2011:
320: another fix to avoid core dump with delete(ARGV); again, many thanks
321: to ruslan ermilov.
322:
323: Aug 7, 2011:
324: split(s, a, //) now behaves the same as split(s, a, "")
325:
326: Jun 12, 2011:
327: /pat/, \n /pat/ {...} is now legal, though bad style to use.
328:
329: added checks to new -v code that permits -vnospace; thanks to
1.25 millert 330: ruslan ermilov for spotting this and providing the patch.
1.16 millert 331:
332: removed fixed limit on number of open files; thanks to aleksey
1.25 millert 333: cheusov and christos zoulos.
1.16 millert 334:
335: fixed day 1 bug that resurrected deleted elements of ARGV when
336: used as filenames (in lib.c).
337:
338: minor type fiddles to make gcc -Wall -pedantic happier (but not
339: totally so); turned on -fno-strict-aliasing in makefile.
340:
341: May 6, 2011:
342: added #ifdef for isblank.
343: now allows -ffoo as well as -f foo arguments.
344: (thanks, ruslan)
345:
346: May 1, 2011:
347: after advice from todd miller, kevin lo, ruslan ermilov,
348: and arnold robbins, changed srand() to return the previous
349: seed (which is 1 on the first call of srand). the seed is
350: an Awkfloat internally though converted to unsigned int to
1.25 millert 351: pass to the library srand(). thanks, everyone.
1.16 millert 352:
353: fixed a subtle (and i hope low-probability) overflow error
1.25 millert 354: in fldbld, by adding space for one extra \0. thanks to
1.16 millert 355: robert bassett for spotting this one and providing a fix.
356:
357: removed the files related to compilation on windows. i no
358: longer have anything like a current windows environment, so
359: i can't test any of it.
1.15 millert 360:
361: May 23, 2010:
362: fixed long-standing overflow bug in run.c; many thanks to
363: nelson beebe for spotting it and providing the fix.
364:
365: fixed bug that didn't parse -vd=1 properly; thanks to santiago
366: vila for spotting it.
367:
368: Feb 8, 2010:
369: i give up. replaced isblank with isspace in b.c; there are
370: no consistent header files.
371:
372: Nov 26, 2009:
373: fixed a long-standing issue with when FS takes effect. a
374: change to FS is now noticed immediately for subsequent splits.
375:
376: changed the name getline() to awkgetline() to avoid yet another
377: name conflict somewhere.
378:
379: Feb 11, 2009:
380: temporarily for now defined HAS_ISBLANK, since that seems to
381: be the best way through the thicket. isblank arrived in C99,
382: but seems to be arriving at different systems at different
383: times.
384:
385: Oct 8, 2008:
386: fixed typo in b.c that set tmpvec wrongly. no one had ever
387: run into the problem, apparently. thanks to alistair crooks.
1.14 millert 388:
389: Oct 23, 2007:
390: minor fix in lib.c: increase inputFS to 100, change malloc
1.25 millert 391: for fields to n+1.
1.14 millert 392:
393: fixed memory fault caused by out of order test in setsval.
394:
395: thanks to david o'brien, freebsd, for both fixes.
396:
397: May 1, 2007:
398: fiddle in makefile to fix for BSD make; thanks to igor sobrado.
399:
400: Mar 31, 2007:
401: fixed some null pointer refs calling adjbuf.
402:
403: Feb 21, 2007:
404: fixed a bug in matching the null RE in sub and gsub. thanks to al aho
405: who actually did the fix (in b.c), and to wolfgang seeberg for finding
406: it and providing a very compact test case.
407:
408: fixed quotation in b.c; thanks to Hal Pratt and the Princeton Dante
409: Project.
410:
411: removed some no-effect asserts in run.c.
412:
413: fiddled maketab.c to not complain about bison-generated values.
414:
415: removed the obsolete -V argument; fixed --version to print the
416: version and exit.
417:
418: fixed wording and an outright error in the usage message; thanks to igor
419: sobrado and jason mcintyre.
420:
421: fixed a bug in -d that caused core dump if no program followed.
422:
423: Jan 1, 2007:
424: dropped mac.code from makefile; there are few non-MacOSX
425: mac's these days.
426:
427: Jan 17, 2006:
428: system() not flagged as unsafe in the unadvertised -safe option.
429: found it while enhancing tests before shipping the ;login: article.
430: practice what you preach.
431:
432: removed the 9-years-obsolete -mr and -mf flags.
433:
434: added -version and --version options.
435:
436: core dump on linux with BEGIN {nextfile}, now fixed.
437:
1.25 millert 438: removed some #ifdef's in run.c and lex.c that appear to no
1.14 millert 439: longer be necessary.
440:
441: Apr 24, 2005:
442: modified lib.c so that values of $0 et al are preserved in the END
443: block, apparently as required by posix. thanks to havard eidnes
444: for the report and code.
445:
446: Jan 14, 2005:
447: fixed infinite loop in parsing, originally found by brian tsang.
448: thanks to arnold robbins for a suggestion that started me
449: rethinking it.
450:
451: Dec 31, 2004:
1.25 millert 452: prevent overflow of -f array in main, head off potential error in
453: call of SYNTAX(), test malloc return in lib.c, all with thanks to
1.14 millert 454: todd miller.
1.13 millert 455:
456: Dec 22, 2004:
457: cranked up size of NCHARS; coverity thinks it can be overrun with
458: smaller size, and i think that's right. added some assertions to b.c
459: to catch places where it might overrun. the RE code is still fragile.
460:
461: Dec 5, 2004:
462: fixed a couple of overflow problems with ridiculous field numbers:
463: e.g., print $(2^32-1). thanks to ruslan ermilov, giorgos keramidas
464: and david o'brien at freebsd.org for patches. this really should
465: be re-done from scratch.
466:
467: Nov 21, 2004:
468: fixed another 25-year-old RE bug, in split. it's another failure
469: to (re-)initialize. thanks to steve fisher for spotting this and
470: providing a good test case.
471:
472: Nov 22, 2003:
473: fixed a bug in regular expressions that dates (so help me) from 1977;
474: it's been there from the beginning. an anchored longest match that
475: was longer than the number of states triggered a failure to initialize
476: the machine properly. many thanks to moinak ghosh for not only finding
477: this one but for providing a fix, in some of the most mysterious
478: code known to man.
479:
480: fixed a storage leak in call() that appears to have been there since
1.25 millert 481: 1983 or so -- a function without an explicit return that assigns a
482: string to a parameter leaked a Cell. thanks to moinak ghosh for
1.13 millert 483: spotting this very subtle one.
484:
485: Jul 31, 2003:
486: fixed, thanks to andrey chernov and ruslan ermilov, a bug in lex.c
487: that mis-handled the character 255 in input. (it was being compared
488: to EOF with a signed comparison.)
489:
490: Jul 29, 2003:
491: fixed (i think) the long-standing botch that included the beginning of
492: line state ^ for RE's in the set of valid characters; this led to a
493: variety of odd problems, including failure to properly match certain
494: regular expressions in non-US locales. thanks to ruslan for keeping
495: at this one.
496:
497: Jul 28, 2003:
498: n-th try at getting internationalization right, with thanks to volker
499: kiefel, arnold robbins and ruslan ermilov for advice, though they
500: should not be blamed for the outcome. according to posix, "." is the
501: radix character in programs and command line arguments regardless of
502: the locale; otherwise, the locale should prevail for input and output
503: of numbers. so it's intended to work that way.
1.25 millert 504:
1.13 millert 505: i have rescinded the attempt to use strcoll in expanding shorthands in
506: regular expressions (cclenter). its properties are much too
507: surprising; for example [a-c] matches aAbBc in locale en_US but abBcC
508: in locale fr_CA. i can see how this might arise by implementation
509: but i cannot explain it to a human user. (this behavior can be seen
510: in gawk as well; we're leaning on the same library.)
511:
512: the issue appears to be that strcoll is meant for sorting, where
513: merging upper and lower case may make sense (though note that unix
514: sort does not do this by default either). it is not appropriate
515: for regular expressions, where the goal is to match specific
516: patterns of characters. in any case, the notations [:lower:], etc.,
517: are available in awk, and they are more likely to work correctly in
518: most locales.
519:
520: a moratorium is hereby declared on internationalization changes.
521: i apologize to friends and colleagues in other parts of the world.
522: i would truly like to get this "right", but i don't know what
523: that is, and i do not want to keep making changes until it's clear.
524:
525: Jul 4, 2003:
526: fixed bug that permitted non-terminated RE, as in "awk /x".
527:
528: Jun 1, 2003:
529: subtle change to split: if source is empty, number of elems
530: is always 0 and the array is not set.
531:
532: Mar 21, 2003:
533: added some parens to isblank, in another attempt to make things
534: internationally portable.
535:
536: Mar 14, 2003:
537: the internationalization changes, somewhat modified, are now
538: reinstated. in theory awk will now do character comparisons
539: and case conversions in national language, but "." will always
540: be the decimal point separator on input and output regardless
541: of national language. isblank(){} has an #ifndef.
542:
543: this no longer compiles on windows: LC_MESSAGES isn't defined
544: in vc6++.
545:
546: fixed subtle behavior in field and record splitting: if FS is
547: a single character and RS is not empty, \n is NOT a separator.
548: this tortuous reading is found in the awk book; behavior now
549: matches gawk and mawk.
1.11 millert 550:
551: Dec 13, 2002:
552: for the moment, the internationalization changes of nov 29 are
553: rolled back -- programs like x = 1.2 don't work in some locales,
554: because the parser is expecting x = 1,2. until i understand this
555: better, this will have to wait.
556:
557: Nov 29, 2002:
558: modified b.c (with tiny changes in main and run) to support
559: locales, using strcoll and iswhatever tests for posix character
560: classes. thanks to ruslan ermilov (ru@freebsd.org) for code.
561: the function isblank doesn't seem to have propagated to any
562: header file near me, so it's there explicitly. not properly
563: tested on non-ascii character sets by me.
564:
565: Jun 28, 2002:
566: modified run/format() and tran/getsval() to do a slightly better
567: job on using OFMT for output from print and CONVFMT for other
1.25 millert 568: number->string conversions, as promised by posix and done by
1.11 millert 569: gawk and mawk. there are still places where it doesn't work
570: right if CONVFMT is changed; by then the STR attribute of the
571: variable has been irrevocably set. thanks to arnold robbins for
572: code and examples.
573:
574: fixed subtle bug in format that could get core dump. thanks to
575: Jaromir Dolecek <jdolecek@NetBSD.org> for finding and fixing.
576: minor cleanup in run.c / format() at the same time.
577:
578: added some tests for null pointers to debugging printf's, which
579: were never intended for external consumption. thanks to dave
580: kerns (dkerns@lucent.com) for pointing this out.
581:
582: GNU compatibility: an empty regexp matches anything (thanks to
583: dag-erling smorgrav, des@ofug.org). subject to reversion if
584: this does more harm than good.
585:
586: pervasive small changes to make things more const-correct, as
587: reported by gcc's -Wwrite-strings. as it says in the gcc manual,
588: this may be more nuisance than useful. provoked by a suggestion
589: and code from arnaud desitter, arnaud@nimbus.geog.ox.ac.uk
590:
591: minor documentation changes to note that this now compiles out
592: of the box on Mac OS X.
593:
594: Feb 10, 2002:
595: changed types in posix chars structure to quiet solaris cc.
596:
597: Jan 1, 2002:
598: fflush() or fflush("") flushes all files and pipes.
599:
1.25 millert 600: length(arrayname) returns number of elements; thanks to
1.11 millert 601: arnold robbins for suggestion.
602:
603: added a makefile.win to make it easier to build on windows.
604: based on dan allen's buildwin.bat.
605:
606: Nov 16, 2001:
607: added support for posix character class names like [:digit:],
608: which are not exactly shorter than [0-9] and perhaps no more
609: portable. thanks to dag-erling smorgrav for code.
610:
611: Feb 16, 2001:
612: removed -m option; no longer needed, and it was actually
613: broken (noted thanks to volker kiefel).
614:
615: Feb 10, 2001:
616: fixed an appalling bug in gettok: any sequence of digits, +,-, E, e,
617: and period was accepted as a valid number if it started with a period.
618: this would never have happened with the lex version.
619:
620: other 1-character botches, now fixed, include a bare $ and a
621: bare " at the end of the input.
622:
623: Feb 7, 2001:
624: more (const char *) casts in b.c and tran.c to silence warnings.
1.8 millert 625:
1.10 millert 626: Nov 15, 2000:
627: fixed a bug introduced in august 1997 that caused expressions
628: like $f[1] to be syntax errors. thanks to arnold robbins for
629: noticing this and providing a fix.
630:
631: Oct 30, 2000:
632: fixed some nextfile bugs: not handling all cases. thanks to
633: arnold robbins for pointing this out. new regressions added.
634:
635: close() is now a function. it returns whatever the library
636: fclose returns, and -1 for closing a file or pipe that wasn't
637: opened.
638:
639: Sep 24, 2000:
640: permit \n explicitly in character classes; won't work right
641: if comes in as "[\n]" but ok as /[\n]/, because of multiple
642: processing of \'s. thanks to arnold robbins.
643:
644: July 5, 2000:
645: minor fiddles in tran.c to keep compilers happy about uschar.
646: thanks to norman wilson.
647:
648: May 25, 2000:
649: yet another attempt at making 8-bit input work, with another
1.25 millert 650: band-aid in b.c (member()), and some (uschar) casts to head
1.10 millert 651: off potential errors in subscripts (like isdigit). also
652: changed HAT to NCHARS-2. thanks again to santiago vila.
653:
654: changed maketab.c to ignore apparently out of range definitions
655: instead of halting; new freeBSD generates one. thanks to
656: jon snader <jsnader@ix.netcom.com> for pointing out the problem.
657:
658: May 2, 2000:
659: fixed an 8-bit problem in b.c by making several char*'s into
660: unsigned char*'s. not clear i have them all yet. thanks to
661: Santiago Vila <sanvila@unex.es> for the bug report.
662:
663: Apr 21, 2000:
664: finally found and fixed a memory leak in function call; it's
665: been there since functions were added ~1983. thanks to
666: jon bentley for the test case that found it.
667:
668: added test in envinit to catch environment "variables" with
1.12 otto 669: names beginning with '='; thanks to Berend Hasselman.
1.10 millert 670:
671: Jul 28, 1999:
672: added test in defn() to catch function foo(foo), which
673: otherwise recurses until core dump. thanks to arnold
674: robbins for noticing this.
675:
1.9 millert 676: Jun 20, 1999:
677: added *bp in gettok in lex.c; appears possible to exit function
678: without terminating the string. thanks to russ cox.
679:
680: Jun 2, 1999:
681: added function stdinit() to run to initialize files[] array,
682: in case stdin, etc., are not constants; some compilers care.
683:
684: May 10, 1999:
685: replaced the ERROR ... FATAL, etc., macros with functions
686: based on vprintf, to avoid problems caused by overrunning
687: fixed-size errbuf array. thanks to ralph corderoy for the
688: impetus, and for pointing out a string termination bug in
689: qstring as well.
690:
691: Apr 21, 1999:
692: fixed bug that caused occasional core dumps with commandline
693: variable with value ending in \. (thanks to nelson beebe for
694: the test case.)
695:
1.8 millert 696: Apr 16, 1999:
1.25 millert 697: with code kindly provided by Bruce Lilly, awk now parses
1.8 millert 698: /=/ and similar constructs more sensibly in more places.
1.10 millert 699: Bruce also provided some helpful test cases.
1.8 millert 700:
701: Apr 5, 1999:
702: changed true/false to True/False in run.c to make it
703: easier to compile with C++. Added some casts on malloc
704: and realloc to be honest about casts; ditto. changed
705: ltype int to long in struct rrow to reduce some 64-bit
706: complaints; other changes scattered throughout for the
707: same purpose. thanks to Nelson Beebe for these portability
708: improvements.
709:
710: removed some horrible pointer-int casting in b.c and elsewhere
711: by adding ptoi and itonp to localize the casts, which are
712: all benign. fixed one incipient bug that showed up on sgi
713: in 64-bit mode.
714:
715: reset lineno for new source file; include filename in error
716: message. also fixed line number error in continuation lines.
717: (thanks to Nelson Beebe for both of these.)
718:
719: Mar 24, 1999:
720: Nelson Beebe notes that irix 5.3 yacc dies with a bogus
721: error; use a newer version or switch to bison, since sgi
722: is unlikely to fix it.
1.1 tholo 723:
1.7 millert 724: Mar 5, 1999:
1.9 millert 725: changed isnumber to is_number to avoid the problem caused by
726: versions of ctype.h that include the name isnumber.
1.7 millert 727:
728: distribution now includes a script for building on a Mac,
729: thanks to Dan Allen.
730:
731: Feb 20, 1999:
732: fixed memory leaks in run.c (call) and tran.c (setfval).
733: thanks to Stephen Nutt for finding these and providing the fixes.
734:
735: Jan 13, 1999:
736: replaced srand argument by (unsigned int) in run.c;
737: avoids problem on Mac and potentially on Unix & Windows.
738: thanks to Dan Allen.
739:
740: added a few (int) casts to silence useless compiler warnings.
741: e.g., errorflag= in run.c jump().
742:
743: added proctab.c to the bundle outout; one less thing
744: to have to compile out of the box.
745:
746: added calls to _popen and _pclose to the win95 stub for
747: pipes (thanks to Steve Adams for this helpful suggestion).
748: seems to work, though properties are not well understood
749: by me, and it appears that under some circumstances the
750: pipe output is truncated. Be careful.
751:
752: Oct 19, 1998:
753: fixed a couple of bugs in getrec: could fail to update $0
1.25 millert 754: after a getline var; because inputFS wasn't initialized,
1.7 millert 755: could split $0 on every character, a misleading diversion.
756:
757: fixed caching bug in makedfa: LRU was actually removing
758: least often used.
759:
760: thanks to ross ridge for finding these, and for providing
761: great bug reports.
762:
763: May 12, 1998:
764: fixed potential bug in readrec: might fail to update record
765: pointer after growing. thanks to dan levy for spotting this
766: and suggesting the fix.
767:
768: Mar 12, 1998:
769: added -V to print version number and die.
1.19 millert 770:
771: [notify dave kerns, dkerns@dacsoup.ih.lucent.com]
1.7 millert 772:
773: Feb 11, 1998:
774: subtle silent bug in lex.c: if the program ended with a number
775: longer than 1 digit, part of the input would be pushed back and
776: parsed again because token buffer wasn't terminated right.
777: example: awk 'length($0) > 10'. blush. at least i found it
778: myself.
779:
780: Aug 31, 1997:
781: s/adelete/awkdelete/: SGI uses this in malloc.h.
782: thanks to nelson beebe for pointing this one out.
783:
784: Aug 21, 1997:
785: fixed some bugs in sub and gsub when replacement includes \\.
786: this is a dark, horrible corner, but at least now i believe that
787: the behavior is the same as gawk and the intended posix standard.
788: thanks to arnold robbins for advice here.
789:
790: Aug 9, 1997:
791: somewhat regretfully, replaced the ancient lex-based lexical
792: analyzer with one written in C. it's longer, generates less code,
793: and more portable; the old one depended too much on mysterious
794: properties of lex that were not preserved in other environments.
795: in theory these recognize the same language.
796:
797: now using strtod to test whether a string is a number, instead of
798: the convoluted original function. should be more portable and
799: reliable if strtod is implemented right.
800:
801: removed now-pointless optimization in makefile that tries to avoid
802: recompilation when awkgram.y is changed but symbols are not.
803:
804: removed most fixed-size arrays, though a handful remain, some
805: of which are unchecked. you have been warned.
806:
807: Aug 4, 1997:
808: with some trepidation, replaced the ancient code that managed
809: fields and $0 in fixed-size arrays with arrays that grow on
810: demand. there is still some tension between trying to make this
811: run fast and making it clean; not sure it's right yet.
812:
813: the ill-conceived -mr and -mf arguments are now useful only
814: for debugging. previous dynamic string code removed.
815:
816: numerous other minor cleanups along the way.
1.1 tholo 817:
1.7 millert 818: Jul 30, 1997:
819: using code provided by dan levy (to whom profuse thanks), replaced
820: fixed-size arrays and awkward kludges by a fairly uniform mechanism
821: to grow arrays as needed for printf, sub, gsub, etc.
1.1 tholo 822:
1.7 millert 823: Jul 23, 1997:
824: falling off the end of a function returns "" and 0, not 0.
825: thanks to arnold robbins.
1.1 tholo 826:
1.7 millert 827: Jun 17, 1997:
828: replaced several fixed-size arrays by dynamically-created ones
829: in run.c; added overflow tests to some previously unchecked cases.
830: getline, toupper, tolower.
1.1 tholo 831:
1.7 millert 832: getline code is still broken in that recursive calls may wind
833: up using the same space. [fixed later]
1.1 tholo 834:
1.7 millert 835: increased RECSIZE to 8192 to push problems further over the horizon.
1.1 tholo 836:
1.7 millert 837: added \r to \n as input line separator for programs, not data.
838: damn CRLFs.
1.1 tholo 839:
1.7 millert 840: modified format() to permit explicit printf("%c", 0) to include
841: a null byte in output. thanks to ken stailey for the fix.
1.1 tholo 842:
1.7 millert 843: added a "-safe" argument that disables file output (print >,
844: print >>), process creation (cmd|getline, print |, system), and
845: access to the environment (ENVIRON). this is a first approximation
846: to a "safe" version of awk, but don't rely on it too much. thanks
847: to joan feigenbaum and matt blaze for the inspiration long ago.
1.1 tholo 848:
1.7 millert 849: Jul 8, 1996:
850: fixed long-standing bug in sub, gsub(/a/, "\\\\&"); thanks to
851: ralph corderoy.
1.1 tholo 852:
1.7 millert 853: Jun 29, 1996:
854: fixed awful bug in new field splitting; didn't get all the places
855: where input was done.
1.1 tholo 856:
1.7 millert 857: Jun 28, 1996:
858: changed field-splitting to conform to posix definition: fields are
859: split using the value of FS at the time of input; it used to be
860: the value when the field or NF was first referred to, a much less
861: predictable definition. thanks to arnold robbins for encouragement
862: to do the right thing.
1.1 tholo 863:
1.7 millert 864: May 28, 1996:
865: fixed appalling but apparently unimportant bug in parsing octal
866: numbers in reg exprs.
1.1 tholo 867:
1.7 millert 868: explicit hex in reg exprs now limited to 2 chars: \xa, \xaa.
1.1 tholo 869:
1.7 millert 870: May 27, 1996:
871: cleaned up some declarations so gcc -Wall is now almost silent.
1.1 tholo 872:
1.7 millert 873: makefile now includes backup copies of ytab.c and lexyy.c in case
874: one makes before looking; it also avoids recreating lexyy.c unless
875: really needed.
1.1 tholo 876:
1.7 millert 877: s/aprintf/awkprint, s/asprintf/awksprintf/ to avoid some name clashes
878: with unwisely-written header files.
1.1 tholo 879:
1.7 millert 880: thanks to jeffrey friedl for several of these.
1.1 tholo 881:
1.7 millert 882: May 26, 1996:
883: an attempt to rationalize the (unsigned) char issue. almost all
884: instances of unsigned char have been removed; the handful of places
885: in b.c where chars are used as table indices have been hand-crafted.
886: added some latin-1 tests to the regression, but i'm not confident;
887: none of my compilers seem to care much. thanks to nelson beebe for
888: pointing out some others that do care.
1.1 tholo 889:
1.7 millert 890: May 2, 1996:
891: removed all register declarations.
1.1 tholo 892:
1.7 millert 893: enhanced split(), as in gawk, etc: split(s, a, "") splits s into
894: a[1]...a[length(s)] with each character a single element.
1.1 tholo 895:
1.7 millert 896: made the same changes for field-splitting if FS is "".
1.1 tholo 897:
1.7 millert 898: added nextfile, as in gawk: causes immediate advance to next
899: input file. (thanks to arnold robbins for inspiration and code).
1.1 tholo 900:
1.7 millert 901: small fixes to regexpr code: can now handle []], [[], and
1.25 millert 902: variants; [] is now a syntax error, rather than matching
1.7 millert 903: everything; [z-a] is now empty, not z. far from complete
904: or correct, however. (thanks to jeffrey friedl for pointing out
905: some awful behaviors.)
1.1 tholo 906:
1.7 millert 907: Apr 29, 1996:
1.12 otto 908: replaced uchar by uschar everywhere; apparently some compilers
1.7 millert 909: usurp this name and this causes conflicts.
1.1 tholo 910:
1.7 millert 911: fixed call to time in run.c (bltin); arg is time_t *.
1.1 tholo 912:
1.7 millert 913: replaced horrible pointer/long punning in b.c by a legitimate
914: union. should be safer on 64-bit machines and cleaner everywhere.
915: (thanks to nelson beebe for pointing out some of these problems.)
1.1 tholo 916:
1.7 millert 917: replaced nested comments by #if 0...#endif in run.c, lib.c.
1.1 tholo 918:
1.7 millert 919: removed getsval, setsval, execute macros from run.c and lib.c.
920: machines are 100x faster than they were when these macros were
921: first used.
1.1 tholo 922:
1.7 millert 923: revised filenames: awk.g.y => awkgram.y, awk.lx.l => awklex.l,
924: y.tab.[ch] => ytab.[ch], lex.yy.c => lexyy.c, all in the aid of
925: portability to nameless systems.
1.1 tholo 926:
1.7 millert 927: "make bundle" now includes yacc and lex output files for recipients
928: who don't have yacc or lex.
1.1 tholo 929:
1.7 millert 930: Aug 15, 1995:
931: initialized Cells in setsymtab more carefully; some fields
932: were not set. (thanks to purify, all of whose complaints i
933: think i now understand.)
1.1 tholo 934:
1.7 millert 935: fixed at least one error in gsub that looked at -1-th element
936: of an array when substituting for a null match (e.g., $).
1.1 tholo 937:
1.7 millert 938: delete arrayname is now legal; it clears the elements but leaves
939: the array, which may not be the right behavior.
1.1 tholo 940:
1.7 millert 941: modified makefile: my current make can't cope with the test used
942: to avoid unnecessary yacc invocations.
1.1 tholo 943:
1.7 millert 944: Jul 17, 1995:
945: added dynamically growing strings to awk.lx.l and b.c
946: to permit regular expressions to be much bigger.
947: the state arrays can still overflow.
1.1 tholo 948:
1.7 millert 949: Aug 24, 1994:
950: detect duplicate arguments in function definitions (mdm).
1.1 tholo 951:
1.7 millert 952: May 11, 1994:
953: trivial fix to printf to limit string size in sub().
1.1 tholo 954:
1.7 millert 955: Apr 22, 1994:
956: fixed yet another subtle self-assignment problem:
957: $1 = $2; $1 = $1 clobbered $1.
1.1 tholo 958:
1.7 millert 959: Regression tests now use private echo, to avoid quoting problems.
1.1 tholo 960:
1.7 millert 961: Feb 2, 1994:
962: changed error() to print line number as %d, not %g.
1.1 tholo 963:
1.7 millert 964: Jul 23, 1993:
965: cosmetic changes: increased sizes of some arrays,
966: reworded some error messages.
1.1 tholo 967:
1.7 millert 968: added CONVFMT as in posix (just replaced OFMT in getsval)
1.1 tholo 969:
1.7 millert 970: FILENAME is now "" until the first thing that causes a file
971: to be opened.
1.1 tholo 972:
1.7 millert 973: Nov 28, 1992:
974: deleted yyunput and yyoutput from proto.h;
975: different versions of lex give these different declarations.
1.1 tholo 976:
1.7 millert 977: May 31, 1992:
978: added -mr N and -mf N options: more record and fields.
979: these really ought to adjust automatically.
1.1 tholo 980:
1.7 millert 981: cleaned up some error messages; "out of space" now means
982: malloc returned NULL in all cases.
1.1 tholo 983:
1.7 millert 984: changed rehash so that if it runs out, it just returns;
985: things will continue to run slow, but maybe a bit longer.
1.1 tholo 986:
1.7 millert 987: Apr 24, 1992:
988: remove redundant close of stdin when using -f -.
1.1 tholo 989:
1.7 millert 990: got rid of core dump with -d; awk -d just prints date.
1.1 tholo 991:
1.7 millert 992: Apr 12, 1992:
993: added explicit check for /dev/std(in,out,err) in redirection.
994: unlike gawk, no /dev/fd/n yet.
1.1 tholo 995:
1.7 millert 996: added (file/pipe) builtin. hard to test satisfactorily.
997: not posix.
1.1 tholo 998:
1.7 millert 999: Feb 20, 1992:
1000: recompile after abortive changes; should be unchanged.
1.1 tholo 1001:
1.7 millert 1002: Dec 2, 1991:
1003: die-casting time: converted to ansi C, installed that.
1.1 tholo 1004:
1.7 millert 1005: Nov 30, 1991:
1006: fixed storage leak in freefa, failing to recover [N]CCL.
1007: thanks to Bill Jones (jones@cs.usask.ca)
1.1 tholo 1008:
1.7 millert 1009: Nov 19, 1991:
1010: use RAND_MAX instead of literal in builtin().
1.1 tholo 1011:
1.7 millert 1012: Nov 12, 1991:
1013: cranked up some fixed-size arrays in b.c, and added a test for
1014: overflow in penter. thanks to mark larsen.
1.1 tholo 1015:
1.7 millert 1016: Sep 24, 1991:
1017: increased buffer in gsub. a very crude fix to a general problem.
1018: and again on Sep 26.
1.1 tholo 1019:
1.7 millert 1020: Aug 18, 1991:
1021: enforce variable name syntax for commandline variables: has to
1022: start with letter or _.
1.1 tholo 1023:
1.7 millert 1024: Jul 27, 1991:
1025: allow newline after ; in for statements.
1.1 tholo 1026:
1.7 millert 1027: Jul 21, 1991:
1028: fixed so that in self-assignment like $1=$1, side effects
1029: like recomputing $0 take place. (this is getting subtle.)
1.1 tholo 1030:
1.7 millert 1031: Jun 30, 1991:
1032: better test for detecting too-long output record.
1.1 tholo 1033:
1.7 millert 1034: Jun 2, 1991:
1035: better defense against very long printf strings.
1036: made break and continue illegal outside of loops.
1.1 tholo 1037:
1.7 millert 1038: May 13, 1991:
1039: removed extra arg on gettemp, tempfree. minor error message rewording.
1.1 tholo 1040:
1041: May 6, 1991:
1042: fixed silly bug in hex parsing in hexstr().
1043: removed an apparently unnecessary test in isnumber().
1044: warn about weird printf conversions.
1045: fixed unchecked array overwrite in relex().
1046:
1047: changed for (i in array) to access elements in sorted order.
1048: then unchanged it -- it really does run slower in too many cases.
1049: left the code in place, commented out.
1050:
1.7 millert 1051: Feb 10, 1991:
1052: check error status on all writes, to avoid banging on full disks.
1.1 tholo 1053:
1.7 millert 1054: Jan 28, 1991:
1055: awk -f - reads the program from stdin.
1.1 tholo 1056:
1.7 millert 1057: Jan 11, 1991:
1058: failed to set numeric state on $0 in cmd|getline context in run.c.
1.1 tholo 1059:
1.7 millert 1060: Nov 2, 1990:
1061: fixed sleazy test for integrality in getsval; use modf.
1.1 tholo 1062:
1.7 millert 1063: Oct 29, 1990:
1064: fixed sleazy buggy code in lib.c that looked (incorrectly) for
1065: too long input lines.
1.1 tholo 1066:
1.7 millert 1067: Oct 14, 1990:
1068: fixed the bug on p. 198 in which it couldn't deduce that an
1069: argument was an array in some contexts. replaced the error
1070: message in intest() by code that damn well makes it an array.
1.1 tholo 1071:
1.7 millert 1072: Oct 8, 1990:
1073: fixed horrible bug: types and values were not preserved in
1074: some kinds of self-assignment. (in assign().)
1.1 tholo 1075:
1.7 millert 1076: Aug 24, 1990:
1077: changed NCHARS to 256 to handle 8-bit characters in strings
1078: presented to match(), etc.
1.1 tholo 1079:
1.7 millert 1080: Jun 26, 1990:
1081: changed struct rrow (awk.h) to use long instead of int for lval,
1082: since cfoll() stores a pointer in it. now works better when int's
1083: are smaller than pointers!
1.1 tholo 1084:
1.7 millert 1085: May 6, 1990:
1086: AVA fixed the grammar so that ! is uniformly of the same precedence as
1087: unary + and -. This renders illegal some constructs like !x=y, which
1088: now has to be parenthesized as !(x=y), and makes others work properly:
1089: !x+y is (!x)+y, and x!y is x !y, not two pattern-action statements.
1090: (These problems were pointed out by Bob Lenk of Posix.)
1.1 tholo 1091:
1.7 millert 1092: Added \x to regular expressions (already in strings).
1093: Limited octal to octal digits; \8 and \9 are not octal.
1094: Centralized the code for parsing escapes in regular expressions.
1095: Added a bunch of tests to T.re and T.sub to verify some of this.
1.1 tholo 1096:
1.7 millert 1097: Feb 9, 1990:
1098: fixed null pointer dereference bug in main.c: -F[nothing]. sigh.
1.1 tholo 1099:
1.7 millert 1100: restored srand behavior: it returns the current seed.
1.1 tholo 1101:
1.7 millert 1102: Jan 18, 1990:
1103: srand now returns previous seed value (0 to start).
1.1 tholo 1104:
1.7 millert 1105: Jan 5, 1990:
1106: fix potential problem in tran.c -- something was freed,
1107: then used in freesymtab.
1.1 tholo 1108:
1.7 millert 1109: Oct 18, 1989:
1110: another try to get the max number of open files set with
1111: relatively machine-independent code.
1.1 tholo 1112:
1.7 millert 1113: small fix to input() in case of multiple reads after EOF.
1.1 tholo 1114:
1.7 millert 1115: Oct 11, 1989:
1116: FILENAME is now defined in the BEGIN block -- too many old
1117: programs broke.
1.1 tholo 1118:
1.7 millert 1119: "-" means stdin in getline as well as on the commandline.
1.1 tholo 1120:
1.7 millert 1121: added a bunch of casts to the code to tell the truth about
1122: char * vs. unsigned char *, a right royal pain. added a
1123: setlocale call to the front of main, though probably no one
1124: has it usefully implemented yet.
1.1 tholo 1125:
1.7 millert 1126: Aug 24, 1989:
1127: removed redundant relational tests against nullnode if parse
1128: tree already had a relational at that point.
1.1 tholo 1129:
1.7 millert 1130: Aug 11, 1989:
1131: fixed bug: commandline variable assignment has to look like
1132: var=something. (consider the man page for =, in file =.1)
1.1 tholo 1133:
1.7 millert 1134: changed number of arguments to functions to static arrays
1135: to avoid repeated malloc calls.
1.1 tholo 1136:
1.7 millert 1137: Aug 2, 1989:
1138: restored -F (space) separator
1.1 tholo 1139:
1.7 millert 1140: Jul 30, 1989:
1141: added -v x=1 y=2 ... for immediate commandline variable assignment;
1142: done before the BEGIN block for sure. they have to precede the
1143: program if the program is on the commandline.
1144: Modified Aug 2 to require a separate -v for each assignment.
1.1 tholo 1145:
1.7 millert 1146: Jul 10, 1989:
1147: fixed ref-thru-zero bug in environment code in tran.c
1.1 tholo 1148:
1.7 millert 1149: Jun 23, 1989:
1150: add newline to usage message.
1.1 tholo 1151:
1.7 millert 1152: Jun 14, 1989:
1153: added some missing ansi printf conversion letters: %i %X %E %G.
1154: no sensible meaning for h or L, so they may not do what one expects.
1.1 tholo 1155:
1.7 millert 1156: made %* conversions work.
1.1 tholo 1157:
1.7 millert 1158: changed x^y so that if n is a positive integer, it's done
1159: by explicit multiplication, thus achieving maximum accuracy.
1160: (this should be done by pow() but it seems not to be locally.)
1161: done to x ^= y as well.
1.1 tholo 1162:
1.7 millert 1163: Jun 4, 1989:
1164: ENVIRON array contains environment: if shell variable V=thing,
1165: ENVIRON["V"] is "thing"
1.1 tholo 1166:
1.7 millert 1167: multiple -f arguments permitted. error reporting is naive.
1168: (they were permitted before, but only the last was used.)
1.1 tholo 1169:
1.7 millert 1170: fixed a really stupid botch in the debugging macro dprintf
1.1 tholo 1171:
1.7 millert 1172: fixed order of evaluation of commandline assignments to match
1173: what the book claims: an argument of the form x=e is evaluated
1174: at the time it would have been opened if it were a filename (p 63).
1175: this invalidates the suggested answer to ex 4-1 (p 195).
1.1 tholo 1176:
1.7 millert 1177: removed some code that permitted -F (space) fieldseparator,
1178: since it didn't quite work right anyway. (restored aug 2)
1.1 tholo 1179:
1.7 millert 1180: Apr 27, 1989:
1181: Line number now accumulated correctly for comment lines.
1.1 tholo 1182:
1.7 millert 1183: Apr 26, 1989:
1184: Debugging output now includes a version date,
1185: if one compiles it into the source each time.
1.1 tholo 1186:
1.7 millert 1187: Apr 9, 1989:
1188: Changed grammar to prohibit constants as 3rd arg of sub and gsub;
1189: prevents class of overwriting-a-constant errors. (Last one?)
1190: This invalidates the "banana" example on page 43 of the book.
1.1 tholo 1191:
1.7 millert 1192: Added \a ("alert"), \v (vertical tab), \xhhh (hexadecimal),
1193: as in ANSI, for strings. Rescinded the sloppiness that permitted
1194: non-octal digits in \ooo. Warning: not all compilers and libraries
1195: will be able to deal with \x correctly.
1.1 tholo 1196:
1.7 millert 1197: Jan 9, 1989:
1198: Fixed bug that caused tempcell list to contain a duplicate.
1199: The fix is kludgy.
1.1 tholo 1200:
1.7 millert 1201: Dec 17, 1988:
1202: Catches some more commandline errors in main.
1203: Removed redundant decl of modf in run.c (confuses some compilers).
1204: Warning: there's no single declaration of malloc, etc., in awk.h
1205: that seems to satisfy all compilers.
1.1 tholo 1206:
1.7 millert 1207: Dec 7, 1988:
1208: Added a bit of code to error printing to avoid printing nulls.
1209: (Not clear that it actually would.)
1.1 tholo 1210:
1.7 millert 1211: Nov 27, 1988:
1212: With fear and trembling, modified the grammar to permit
1213: multiple pattern-action statements on one line without
1214: an explicit separator. By definition, this capitulation
1215: to the ghost of ancient implementations remains undefined
1216: and thus subject to change without notice or apology.
1217: DO NOT COUNT ON IT.
1.1 tholo 1218:
1.7 millert 1219: Oct 30, 1988:
1220: Fixed bug in call() that failed to recover storage.
1.1 tholo 1221:
1.7 millert 1222: A warning is now generated if there are more arguments
1223: in the call than in the definition (in lieu of fixing
1224: another storage leak).
1.2 millert 1225:
1.7 millert 1226: Oct 20, 1988:
1227: Fixed %c: if expr is numeric, use numeric value;
1228: otherwise print 1st char of string value. still
1229: doesn't work if the value is 0 -- won't print \0.
1.2 millert 1230:
1.7 millert 1231: Added a few more checks for running out of malloc.
1.2 millert 1232:
1.7 millert 1233: Oct 12, 1988:
1234: Fixed bug in call() that freed local arrays twice.
1.5 kstailey 1235:
1.7 millert 1236: Fixed to handle deletion of non-existent array right;
1237: complains about attempt to delete non-array element.
1.6 kstailey 1238:
1.7 millert 1239: Sep 30, 1988:
1240: Now guarantees to evaluate all arguments of built-in
1241: functions, as in C; the appearance is that arguments
1242: are evaluated before the function is called. Places
1243: affected are sub (gsub was ok), substr, printf, and
1244: all the built-in arithmetic functions in bltin().
1245: A warning is generated if a bltin() is called with
1246: the wrong number of arguments.
1.6 kstailey 1247:
1.7 millert 1248: This requires changing makeprof on p167 of the book.
1.6 kstailey 1249:
1.7 millert 1250: Aug 23, 1988:
1251: setting FILENAME in BEGIN caused core dump, apparently
1252: because it was freeing space not allocated by malloc.
1.6 kstailey 1253:
1.7 millert 1254: July 24, 1988:
1255: fixed egregious error in toupper/tolower functions.
1256: still subject to rescinding, however.
1.6 kstailey 1257:
1.7 millert 1258: July 2, 1988:
1259: flush stdout before opening file or pipe
1.6 kstailey 1260:
1.7 millert 1261: July 2, 1988:
1262: performance bug in b.c/cgoto(): not freeing some sets of states.
1263: partial fix only right now, and the number of states increased
1264: to make it less obvious.
1.6 kstailey 1265:
1.7 millert 1266: June 1, 1988:
1267: check error status on close
1.6 kstailey 1268:
1.7 millert 1269: May 28, 1988:
1270: srand returns seed value it's using.
1271: see 1/18/90
1.6 kstailey 1272:
1.7 millert 1273: May 22, 1988:
1274: Removed limit on depth of function calls.
1.6 kstailey 1275:
1.7 millert 1276: May 10, 1988:
1277: Fixed lib.c to permit _ in commandline variable names.
1.6 kstailey 1278:
1.7 millert 1279: Mar 25, 1988:
1280: main.c fixed to recognize -- as terminator of command-
1281: line options. Illegal options flagged.
1282: Error reporting slightly cleaned up.
1.6 kstailey 1283:
1.7 millert 1284: Dec 2, 1987:
1285: Newer C compilers apply a strict scope rule to extern
1286: declarations within functions. Two extern declarations in
1287: lib.c and tran.c have been moved to obviate this problem.
1.6 kstailey 1288:
1.7 millert 1289: Oct xx, 1987:
1290: Reluctantly added toupper and tolower functions.
1291: Subject to rescinding without notice.
1.6 kstailey 1292:
1.7 millert 1293: Sep 17, 1987:
1294: Error-message printer had printf(s) instead of
1295: printf("%s",s); got core dumps when the message
1296: included a %.
1.6 kstailey 1297:
1.7 millert 1298: Sep 12, 1987:
1299: Very long printf strings caused core dump;
1300: fixed aprintf, asprintf, format to catch them.
1301: Can still get a core dump in printf itself.
1.6 kstailey 1302:
1303:
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