Annotation of src/usr.bin/awk/FIXES, Revision 1.40
1.40 ! millert 1: /* $OpenBSD: FIXES,v 1.39 2020/12/09 20:00:11 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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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.
1.40 ! millert 28:
! 29: December 18, 2020:
! 30: Fix problems converting inf and NaN values in lib.c:is_valid_number.
! 31: Enhance number to string conversion to do the right thing for
! 32: NaN and inf values. Things are now pretty much the same as in
! 33: gawk. (Found a gawk bug while we're at it.) Added a torture
! 34: test for these values. Thanks to Arnold Robbins. Allows closing
! 35: of PR #101.
! 36:
! 37: December 15, 2020:
! 38: Merge PR #99, which gets the right header for strcasecmp.
! 39: Thanks to GitHub user michaelforney.
1.39 millert 40:
41: December 8, 2020:
42: Merge PR #98: Disallow hex data. Allow only +nan, -nan,
43: +inf, -inf (case independent) to give NaN and infinity values.
44: Improve things so that string to double conversion is only
45: done once, yielding something of a speedup. This obviate
46: PR #95. Thanks to Arnold Robbins.
47:
48: December 3, 2020:
49: Fix to argument parsing to avoid printing spurious newlines.
50: Thanks to Todd Miller. Merges PR #97.
51:
52: October 13, 2020:
53: Add casts before all the calls to malloc/calloc/realloc in order
54: to get it to compile with g++. Thanks to Arnold Robbins.
55:
56: August 16, 2020:
57: Additional fixes for DJGPP. Thanks to Eli Zaretskii for
58: the testing.
1.38 millert 59:
60: August 7, 2020:
61: Merge PR #93, which adds casts to (void*) for debug prints
62: using the %p format specifier. Thanks to GitHub user YongHaoWu
63: ("Chris") for the fixes.
64:
65: August 4, 2020:
66: In run.c, use non-restartable multibyte routines to attain
67: portability to DJGPP. Should fix Issue 92. Thanks to Albert Wik
68: for the report and to Todd Miller for the suggested fix.
1.37 millert 69:
70: July 30, 2020:
71: Merge PRs 88-91 which fix small bugs. Thanks to Todd Miller and
72: Tim van der Molen for the fixes.
73:
74: In order to make life easier, we move exclusively to bison
75: as the parser generator.
1.36 millert 76:
77: July 2, 2020:
78: Merge PRs 85 and 86 which fix regressions. Thanks to
79: Tim van der Molen for the fixes.
1.35 millert 80:
81: June 25, 2020:
82: Merge PRs 82 and 84. The latter fixes issue #83. Thanks to
83: Todd Miller and awkfan77.
1.34 millert 84:
85: June 12, 2020:
86: Clear errno before calling errcheck to avoid any spurious errors
87: left over from previous calls that may have set it. Thanks to
88: Todd Miller for the fix, from PR #80.
89:
90: Fix Issue #78 by allowing \r to follow floating point numbers in
91: lib.c:is_number. Thanks to GitHub user ajcarr for the report
92: and to Arnold Robbins for the fix.
1.33 millert 93:
94: June 5, 2020:
95: In fldbld(), make sure that inputFS is set before trying to
96: use it. Thanks to Steffen Nurpmeso <steffen@sdaoden.eu>
97: for the report.
98:
99: May 5, 2020:
100: Fix checks for compilers that can handle noreturn. Thanks to
101: GitHub user enh-google for pointing it out. Closes Issue #79.
102:
103: April 16, 2020:
104: Handle old compilers that don't support C11 (for noreturn).
105: Thanks to Arnold Robbins.
106:
107: April 5, 2020:
108: Use <stdnoreturn.h> and noreturn instead of GCC attributes.
109: Thanks to GitHub user awkfan77. Closes PR #77.
1.30 millert 110:
1.32 millert 111: February 28, 2020:
112: More cleanups from Christos Zoulas: notably backslash continuation
113: inside strings removes the newline and a fix for RS = "^a".
114: Fix for address sanitizer-found problem. Thanks to GitHub user
115: enh-google.
116:
117: February 19, 2020:
118: More small cleanups from Christos Zoulas.
119:
120: February 18, 2020:
121: Additional cleanups from Christos Zoulas. It's no longer necessary
122: to use the -y flag to bison.
123:
124: February 6, 2020:
125: Additional small cleanups from Christos Zoulas. awk is now
126: a little more robust about reporting I/O errors upon exit.
127:
1.31 millert 128: January 31, 2020:
129: Merge PR #70, which avoids use of variable length arrays. Thanks
130: to GitHub user michaelforney. Fix issue #60 ({0} in interval
1.32 millert 131: expressions doesn't work). Also get all tests working again.
132: Thanks to Arnold Robbins.
1.31 millert 133:
134: January 24, 2020:
135: A number of small cleanups from Christos Zoulas. Add the close
136: on exec flag to files/pipes opened for redirection; courtesy of
137: Arnold Robbins.
138:
139: January 19, 2020:
140: If POSIXLY_CORRECT is set in the environment, then sub and gsub
141: use POSIX rules for multiple backslashes. This fixes Issue #66,
142: while maintaining backwards compatibility.
143:
144: January 9, 2020:
145: Input/output errors on closing files are now fatal instead of
146: mere warnings. Thanks to Martijn Dekker <martijn@inlv.org>.
147:
1.30 millert 148: January 5, 2020:
149: Fix a bug in the concatentation of two string constants into
150: one done in the grammar. Fixes GitHub issue #61. Thanks
151: to GitHub user awkfan77 for pointing out the direction for
152: the fix. New test T.concat added to the test suite.
153: Fix a few memory leaks reported by valgrind, as well.
154:
155: December 27, 2019:
156: Fix a bug whereby a{0,3} could match four a's. Thanks to
157: "Anonymous AWK fan" for the report.
158:
159: December 11, 2019:
160: Further printf-related fixes for 32 bit systems.
161: Thanks again to Christos Zoulas.
162:
163: December 8, 2019:
164: Fix the return value of sprintf("%d") on 32 bit systems.
165: Thanks to Jim Lowe for the report and to Christos Zoulas
166: for the fix.
1.29 millert 167:
168: November 10, 2019:
169: Convert a number of Boolean integer variables into
170: actual bools. Convert compile_time variable into an
171: enum and simplify some of the related code. Thanks
172: to Arnold Robbins.
173:
174: November 8, 2019:
175: Fix from Ori Bernstein to get UTF-8 characters instead of
176: bytes when FS = "". This is currently the only bit of
177: the One True Awk that understands multibyte characters.
178: From Arnold Robbins, apply some cleanups in the test suite.
1.28 millert 179:
180: October 25, 2019:
181: More fixes and cleanups from NetBSD, courtesy of Christos
182: Zoulas. Merges PRs 54 and 55.
183:
184: October 24, 2019:
185: Import second round of code cleanups from NetBSD. Much thanks
1.31 millert 186: to Christos Zoulas (GitHub user zoulasc). Merges PR 53.
1.28 millert 187: Add an optimization for string concatenation, also from
188: Christos.
1.27 millert 189:
190: October 17, 2019:
191: Import code cleanups from NetBSD. Much thanks to Christos
1.31 millert 192: Zoulas (GitHub user zoulasc). Merges PR 51.
1.26 millert 193:
194: October 6, 2019:
195: Import code from NetBSD awk that implements RS as a regular
196: expression.
1.23 millert 197:
1.25 millert 198: September 10, 2019:
199: Fixes for various array / memory overruns found via gcc's
1.31 millert 200: -fsanitize=unknown. Thanks to Alexander Richardson (GitHub
1.25 millert 201: user arichardson). Merges PRs 47 and 48.
202:
203: July 28, 2019:
204: Import grammar optimization from NetBSD: Two string constants
205: concatenated together get turned into a single string.
206:
207: July 26, 2019:
208: Support POSIX-specified C-style escape sequences "\a" (alarm)
209: and "\v" (vertical tab) in command line arguments and regular
210: expressions, further to the support for them in strings added on
211: Apr 9, 1989. These now no longer match as literal "a" and "v"
212: characters (as they don't on other awk implementations).
213: Thanks to Martijn Dekker.
214:
215: July 17, 2019:
216: Pull in a number of code cleanups and minor fixes from
217: Warner Losh's bsd-ota branch. The only user visible change
218: is the use of random(3) as the random number generator.
219: Thanks to Warner Losh for collecting all these fixes in
220: one easy place to get them from.
221:
222: July 16, 2019:
223: Fix field splitting to use FS value as of the time a record
224: was read or assigned to. Thanks to GitHub user Cody Mello (melloc)
225: for the fix. (Merged from his branch, via PR #42.) Updated
226: testdir/T.split per said PR as well.
227:
228: June 24, 2019:
229: Extract awktest.tar into testdir directory. Add some very
230: simple mechanics to the makefile for running the tests and
231: for cleaning up. No changes to awk itself.
232:
1.24 millert 233: June 17, 2019:
234: Disallow deleting SYMTAB and its elements, which creates
235: use-after-free bugs. Thanks to GitHub user Cody Mello (melloc)
236: for the fix. (Merged from PR #43.)
237:
238: June 5, 2019:
239: Allow unmatched right parenthesis in a regular expression to
240: be treated literally. Fixes Issue #40. Thanks to GitHub user
241: Warner Losh (bsdimp) for the report. Thanks to Arnold Robbins
242: for the fix.
243:
244: May 29,2019:
245: Fix check for command line arguments to no longer require that
246: first character after '=' not be another '='. Reverts change of
247: August 11, 1989. Thanks to GitHub user Jamie Landeg Jones for
248: pointing out the issue; from Issue #38.
249:
250: Apr 7, 2019:
251: Update awktest.tar(p.50) to use modern options to sort. Needed
252: for Android development. Thanks to GitHub user mohd-akram (Mohamed
253: Akram). From Issue #33.
254:
255: Mar 12, 2019:
256: Added very simplistic support for cross-compiling in the
257: makefile. We are NOT going to go in the direction of the
258: autotools, though. Thanks to GitHub user nee-san for
259: the basic change. (Merged from PR #34.)
260:
1.23 millert 261: Mar 5, 2019:
262: Added support for POSIX-standard interval expressions (a.k.a.
263: bounds, a.k.a. repetition expressions) in regular expressions,
264: backported (via NetBSD) from Apple awk-24 (20070501).
265: Thanks to Martijn Dekker <martijn@inlv.org> for the port.
266: (Merged from PR #30.)
267:
268: Mar 3, 2019:
269: Merge PRs as follows:
270: #12: Avoid undefined behaviour when using ctype(3) functions in
271: relex(). Thanks to GitHub user iamleot.
272: #31: Make getline handle numeric strings, and update FIXES. Thanks
1.24 millert 273: to GitHub user arnoldrobbins.
1.23 millert 274: #32: maketab: support build systems with read-only source. Thanks
275: to GitHub user enh.
1.22 millert 276:
277: Jan 25, 2019:
278: Make getline handle numeric strings properly in all cases.
279: (Thanks, Arnold.)
280:
281: Jan 21, 2019:
282: Merged a number of small fixes from GitHub pull requests.
283: Thanks to GitHub users Arnold Robbins (arnoldrobbins),
284: Cody Mello (melloc) and Christoph Junghans (junghans).
285: PR numbers: 13-21, 23, 24, 27.
1.21 millert 286:
287: Oct 25, 2018:
288: Added test in maketab.c to prevent generating a proctab entry
289: for YYSTYPE_IS_DEFINED. It was harmless but some gcc settings
290: generated a warning message. Thanks to Nan Xiao for report.
1.20 millert 291:
292: Aug 27, 2018:
293: Disallow '$' in printf formats; arguments evaluated in order
294: and printed in order.
295:
296: Added some casts to silence warnings on debugging printfs.
297: (Thanks, Arnold.)
1.18 millert 298:
1.19 millert 299: Aug 23, 2018:
300: A long list of fixes courtesy of Arnold Robbins,
301: to whom profound thanks.
302:
303: 1. ofs-rebuild: OFS value used to rebuild the record was incorrect.
304: Fixed August 19, 2014. Revised fix August 2018.
305:
306: 2. system-status: Instead of a floating-point division by 256, use
307: the wait(2) macros to create a reasonable exit status.
308: Fixed March 12, 2016.
309:
310: 3. space: Use provided xisblank() function instead of ispace() for
311: matching [[:blank:]].
312:
313: 4. a-format: Add POSIX standard %a and %A to supported formats. Check
314: at runtime that this format is available.
315:
316: 5. decr-NF: Decrementing NF did not change $0. This is a decades-old
317: bug. There are interactions with the old and new value of OFS as well.
318: Most of the fix came from the NetBSD awk.
319:
320: 6. string-conv: String conversions of scalars were sticky. Once a
321: conversion to string happened, even with OFMT, that value was used until
322: a new numeric value was assigned, even if OFMT differed from CONVFMT,
323: and also if CONVFMT changed.
324:
325: 7. unary-plus: Unary plus on a string constant returned the string.
326: Instead, it should convert the value to numeric and give that value.
327:
328: Also added Arnold's tests for these to awktest.tar as T.arnold.
329:
330: Aug 15, 2018:
331: fixed mangled awktest.tar (thanks, Arnold), posted all
332: current (very minor) fixes to github / onetrueawk
333:
1.18 millert 334: Jun 7, 2018:
335: (yes, a long layoff)
336: Updated some broken tests (beebe.tar, T.lilly)
337: [thanks to Arnold Robbins]
338:
339: Mar 26, 2015:
340: buffer overflow in error reporting; thanks to tobias ulmer
341: and john-mark gurney for spotting it and the fix.
342:
343: Feb 4, 2013:
344: cleaned up a handful of tests that didn't seem to actually
345: test for correct behavior: T.latin1, T.gawk.
346:
347: Jan 5, 2013:
348: added ,NULL initializer to static Cells in run.c; not really
349: needed but cleaner. Thanks to Michael Bombardieri.
1.17 millert 350:
351: Dec 20, 2012:
352: fiddled makefile to get correct yacc and bison flags. pick yacc
353: (linux) or bison (mac) as necessary.
354:
355: added __attribute__((__noreturn__)) to a couple of lines in
356: proto.h, to silence someone's enthusiastic checker.
357:
358: fixed obscure call by value bug in split(a[1],a) reported on
359: 9fans. the management of temporary values is just a mess; i
360: took a shortcut by making an extra string copy. thanks
361: to paul patience and arnold robbins for passing it on and for
362: proposed patches.
363:
364: tiny fiddle in setfval to eliminate -0 results in T.expr, which
365: has irritated me for 20+ years.
1.16 millert 366:
367: Aug 10, 2011:
368: another fix to avoid core dump with delete(ARGV); again, many thanks
369: to ruslan ermilov.
370:
371: Aug 7, 2011:
372: split(s, a, //) now behaves the same as split(s, a, "")
373:
374: Jun 12, 2011:
375: /pat/, \n /pat/ {...} is now legal, though bad style to use.
376:
377: added checks to new -v code that permits -vnospace; thanks to
1.25 millert 378: ruslan ermilov for spotting this and providing the patch.
1.16 millert 379:
380: removed fixed limit on number of open files; thanks to aleksey
1.25 millert 381: cheusov and christos zoulos.
1.16 millert 382:
383: fixed day 1 bug that resurrected deleted elements of ARGV when
384: used as filenames (in lib.c).
385:
386: minor type fiddles to make gcc -Wall -pedantic happier (but not
387: totally so); turned on -fno-strict-aliasing in makefile.
388:
389: May 6, 2011:
390: added #ifdef for isblank.
391: now allows -ffoo as well as -f foo arguments.
392: (thanks, ruslan)
393:
394: May 1, 2011:
395: after advice from todd miller, kevin lo, ruslan ermilov,
396: and arnold robbins, changed srand() to return the previous
397: seed (which is 1 on the first call of srand). the seed is
398: an Awkfloat internally though converted to unsigned int to
1.25 millert 399: pass to the library srand(). thanks, everyone.
1.16 millert 400:
401: fixed a subtle (and i hope low-probability) overflow error
1.25 millert 402: in fldbld, by adding space for one extra \0. thanks to
1.16 millert 403: robert bassett for spotting this one and providing a fix.
404:
405: removed the files related to compilation on windows. i no
406: longer have anything like a current windows environment, so
407: i can't test any of it.
1.15 millert 408:
409: May 23, 2010:
410: fixed long-standing overflow bug in run.c; many thanks to
411: nelson beebe for spotting it and providing the fix.
412:
413: fixed bug that didn't parse -vd=1 properly; thanks to santiago
414: vila for spotting it.
415:
416: Feb 8, 2010:
417: i give up. replaced isblank with isspace in b.c; there are
418: no consistent header files.
419:
420: Nov 26, 2009:
421: fixed a long-standing issue with when FS takes effect. a
422: change to FS is now noticed immediately for subsequent splits.
423:
424: changed the name getline() to awkgetline() to avoid yet another
425: name conflict somewhere.
426:
427: Feb 11, 2009:
428: temporarily for now defined HAS_ISBLANK, since that seems to
429: be the best way through the thicket. isblank arrived in C99,
430: but seems to be arriving at different systems at different
431: times.
432:
433: Oct 8, 2008:
434: fixed typo in b.c that set tmpvec wrongly. no one had ever
435: run into the problem, apparently. thanks to alistair crooks.
1.14 millert 436:
437: Oct 23, 2007:
438: minor fix in lib.c: increase inputFS to 100, change malloc
1.25 millert 439: for fields to n+1.
1.14 millert 440:
441: fixed memory fault caused by out of order test in setsval.
442:
443: thanks to david o'brien, freebsd, for both fixes.
444:
445: May 1, 2007:
446: fiddle in makefile to fix for BSD make; thanks to igor sobrado.
447:
448: Mar 31, 2007:
449: fixed some null pointer refs calling adjbuf.
450:
451: Feb 21, 2007:
452: fixed a bug in matching the null RE in sub and gsub. thanks to al aho
453: who actually did the fix (in b.c), and to wolfgang seeberg for finding
454: it and providing a very compact test case.
455:
456: fixed quotation in b.c; thanks to Hal Pratt and the Princeton Dante
457: Project.
458:
459: removed some no-effect asserts in run.c.
460:
461: fiddled maketab.c to not complain about bison-generated values.
462:
463: removed the obsolete -V argument; fixed --version to print the
464: version and exit.
465:
466: fixed wording and an outright error in the usage message; thanks to igor
467: sobrado and jason mcintyre.
468:
469: fixed a bug in -d that caused core dump if no program followed.
470:
471: Jan 1, 2007:
472: dropped mac.code from makefile; there are few non-MacOSX
473: mac's these days.
474:
475: Jan 17, 2006:
476: system() not flagged as unsafe in the unadvertised -safe option.
477: found it while enhancing tests before shipping the ;login: article.
478: practice what you preach.
479:
480: removed the 9-years-obsolete -mr and -mf flags.
481:
482: added -version and --version options.
483:
484: core dump on linux with BEGIN {nextfile}, now fixed.
485:
1.25 millert 486: removed some #ifdef's in run.c and lex.c that appear to no
1.14 millert 487: longer be necessary.
488:
489: Apr 24, 2005:
490: modified lib.c so that values of $0 et al are preserved in the END
491: block, apparently as required by posix. thanks to havard eidnes
492: for the report and code.
493:
494: Jan 14, 2005:
495: fixed infinite loop in parsing, originally found by brian tsang.
496: thanks to arnold robbins for a suggestion that started me
497: rethinking it.
498:
499: Dec 31, 2004:
1.25 millert 500: prevent overflow of -f array in main, head off potential error in
501: call of SYNTAX(), test malloc return in lib.c, all with thanks to
1.14 millert 502: todd miller.
1.13 millert 503:
504: Dec 22, 2004:
505: cranked up size of NCHARS; coverity thinks it can be overrun with
506: smaller size, and i think that's right. added some assertions to b.c
507: to catch places where it might overrun. the RE code is still fragile.
508:
509: Dec 5, 2004:
510: fixed a couple of overflow problems with ridiculous field numbers:
511: e.g., print $(2^32-1). thanks to ruslan ermilov, giorgos keramidas
512: and david o'brien at freebsd.org for patches. this really should
513: be re-done from scratch.
514:
515: Nov 21, 2004:
516: fixed another 25-year-old RE bug, in split. it's another failure
517: to (re-)initialize. thanks to steve fisher for spotting this and
518: providing a good test case.
519:
520: Nov 22, 2003:
521: fixed a bug in regular expressions that dates (so help me) from 1977;
522: it's been there from the beginning. an anchored longest match that
523: was longer than the number of states triggered a failure to initialize
524: the machine properly. many thanks to moinak ghosh for not only finding
525: this one but for providing a fix, in some of the most mysterious
526: code known to man.
527:
528: fixed a storage leak in call() that appears to have been there since
1.25 millert 529: 1983 or so -- a function without an explicit return that assigns a
530: string to a parameter leaked a Cell. thanks to moinak ghosh for
1.13 millert 531: spotting this very subtle one.
532:
533: Jul 31, 2003:
534: fixed, thanks to andrey chernov and ruslan ermilov, a bug in lex.c
535: that mis-handled the character 255 in input. (it was being compared
536: to EOF with a signed comparison.)
537:
538: Jul 29, 2003:
539: fixed (i think) the long-standing botch that included the beginning of
540: line state ^ for RE's in the set of valid characters; this led to a
541: variety of odd problems, including failure to properly match certain
542: regular expressions in non-US locales. thanks to ruslan for keeping
543: at this one.
544:
545: Jul 28, 2003:
546: n-th try at getting internationalization right, with thanks to volker
547: kiefel, arnold robbins and ruslan ermilov for advice, though they
548: should not be blamed for the outcome. according to posix, "." is the
549: radix character in programs and command line arguments regardless of
550: the locale; otherwise, the locale should prevail for input and output
551: of numbers. so it's intended to work that way.
1.25 millert 552:
1.13 millert 553: i have rescinded the attempt to use strcoll in expanding shorthands in
554: regular expressions (cclenter). its properties are much too
555: surprising; for example [a-c] matches aAbBc in locale en_US but abBcC
556: in locale fr_CA. i can see how this might arise by implementation
557: but i cannot explain it to a human user. (this behavior can be seen
558: in gawk as well; we're leaning on the same library.)
559:
560: the issue appears to be that strcoll is meant for sorting, where
561: merging upper and lower case may make sense (though note that unix
562: sort does not do this by default either). it is not appropriate
563: for regular expressions, where the goal is to match specific
564: patterns of characters. in any case, the notations [:lower:], etc.,
565: are available in awk, and they are more likely to work correctly in
566: most locales.
567:
568: a moratorium is hereby declared on internationalization changes.
569: i apologize to friends and colleagues in other parts of the world.
570: i would truly like to get this "right", but i don't know what
571: that is, and i do not want to keep making changes until it's clear.
572:
573: Jul 4, 2003:
574: fixed bug that permitted non-terminated RE, as in "awk /x".
575:
576: Jun 1, 2003:
577: subtle change to split: if source is empty, number of elems
578: is always 0 and the array is not set.
579:
580: Mar 21, 2003:
581: added some parens to isblank, in another attempt to make things
582: internationally portable.
583:
584: Mar 14, 2003:
585: the internationalization changes, somewhat modified, are now
586: reinstated. in theory awk will now do character comparisons
587: and case conversions in national language, but "." will always
588: be the decimal point separator on input and output regardless
589: of national language. isblank(){} has an #ifndef.
590:
591: this no longer compiles on windows: LC_MESSAGES isn't defined
592: in vc6++.
593:
594: fixed subtle behavior in field and record splitting: if FS is
595: a single character and RS is not empty, \n is NOT a separator.
596: this tortuous reading is found in the awk book; behavior now
597: matches gawk and mawk.
1.11 millert 598:
599: Dec 13, 2002:
600: for the moment, the internationalization changes of nov 29 are
601: rolled back -- programs like x = 1.2 don't work in some locales,
602: because the parser is expecting x = 1,2. until i understand this
603: better, this will have to wait.
604:
605: Nov 29, 2002:
606: modified b.c (with tiny changes in main and run) to support
607: locales, using strcoll and iswhatever tests for posix character
608: classes. thanks to ruslan ermilov (ru@freebsd.org) for code.
609: the function isblank doesn't seem to have propagated to any
610: header file near me, so it's there explicitly. not properly
611: tested on non-ascii character sets by me.
612:
613: Jun 28, 2002:
614: modified run/format() and tran/getsval() to do a slightly better
615: job on using OFMT for output from print and CONVFMT for other
1.25 millert 616: number->string conversions, as promised by posix and done by
1.11 millert 617: gawk and mawk. there are still places where it doesn't work
618: right if CONVFMT is changed; by then the STR attribute of the
619: variable has been irrevocably set. thanks to arnold robbins for
620: code and examples.
621:
622: fixed subtle bug in format that could get core dump. thanks to
623: Jaromir Dolecek <jdolecek@NetBSD.org> for finding and fixing.
624: minor cleanup in run.c / format() at the same time.
625:
626: added some tests for null pointers to debugging printf's, which
627: were never intended for external consumption. thanks to dave
628: kerns (dkerns@lucent.com) for pointing this out.
629:
630: GNU compatibility: an empty regexp matches anything (thanks to
631: dag-erling smorgrav, des@ofug.org). subject to reversion if
632: this does more harm than good.
633:
634: pervasive small changes to make things more const-correct, as
635: reported by gcc's -Wwrite-strings. as it says in the gcc manual,
636: this may be more nuisance than useful. provoked by a suggestion
637: and code from arnaud desitter, arnaud@nimbus.geog.ox.ac.uk
638:
639: minor documentation changes to note that this now compiles out
640: of the box on Mac OS X.
641:
642: Feb 10, 2002:
643: changed types in posix chars structure to quiet solaris cc.
644:
645: Jan 1, 2002:
646: fflush() or fflush("") flushes all files and pipes.
647:
1.25 millert 648: length(arrayname) returns number of elements; thanks to
1.11 millert 649: arnold robbins for suggestion.
650:
651: added a makefile.win to make it easier to build on windows.
652: based on dan allen's buildwin.bat.
653:
654: Nov 16, 2001:
655: added support for posix character class names like [:digit:],
656: which are not exactly shorter than [0-9] and perhaps no more
657: portable. thanks to dag-erling smorgrav for code.
658:
659: Feb 16, 2001:
660: removed -m option; no longer needed, and it was actually
661: broken (noted thanks to volker kiefel).
662:
663: Feb 10, 2001:
664: fixed an appalling bug in gettok: any sequence of digits, +,-, E, e,
665: and period was accepted as a valid number if it started with a period.
666: this would never have happened with the lex version.
667:
668: other 1-character botches, now fixed, include a bare $ and a
669: bare " at the end of the input.
670:
671: Feb 7, 2001:
672: more (const char *) casts in b.c and tran.c to silence warnings.
1.8 millert 673:
1.10 millert 674: Nov 15, 2000:
675: fixed a bug introduced in august 1997 that caused expressions
676: like $f[1] to be syntax errors. thanks to arnold robbins for
677: noticing this and providing a fix.
678:
679: Oct 30, 2000:
680: fixed some nextfile bugs: not handling all cases. thanks to
681: arnold robbins for pointing this out. new regressions added.
682:
683: close() is now a function. it returns whatever the library
684: fclose returns, and -1 for closing a file or pipe that wasn't
685: opened.
686:
687: Sep 24, 2000:
688: permit \n explicitly in character classes; won't work right
689: if comes in as "[\n]" but ok as /[\n]/, because of multiple
690: processing of \'s. thanks to arnold robbins.
691:
692: July 5, 2000:
693: minor fiddles in tran.c to keep compilers happy about uschar.
694: thanks to norman wilson.
695:
696: May 25, 2000:
697: yet another attempt at making 8-bit input work, with another
1.25 millert 698: band-aid in b.c (member()), and some (uschar) casts to head
1.10 millert 699: off potential errors in subscripts (like isdigit). also
700: changed HAT to NCHARS-2. thanks again to santiago vila.
701:
702: changed maketab.c to ignore apparently out of range definitions
703: instead of halting; new freeBSD generates one. thanks to
704: jon snader <jsnader@ix.netcom.com> for pointing out the problem.
705:
706: May 2, 2000:
707: fixed an 8-bit problem in b.c by making several char*'s into
708: unsigned char*'s. not clear i have them all yet. thanks to
709: Santiago Vila <sanvila@unex.es> for the bug report.
710:
711: Apr 21, 2000:
712: finally found and fixed a memory leak in function call; it's
713: been there since functions were added ~1983. thanks to
714: jon bentley for the test case that found it.
715:
716: added test in envinit to catch environment "variables" with
1.12 otto 717: names beginning with '='; thanks to Berend Hasselman.
1.10 millert 718:
719: Jul 28, 1999:
720: added test in defn() to catch function foo(foo), which
721: otherwise recurses until core dump. thanks to arnold
722: robbins for noticing this.
723:
1.9 millert 724: Jun 20, 1999:
725: added *bp in gettok in lex.c; appears possible to exit function
726: without terminating the string. thanks to russ cox.
727:
728: Jun 2, 1999:
729: added function stdinit() to run to initialize files[] array,
730: in case stdin, etc., are not constants; some compilers care.
731:
732: May 10, 1999:
733: replaced the ERROR ... FATAL, etc., macros with functions
734: based on vprintf, to avoid problems caused by overrunning
735: fixed-size errbuf array. thanks to ralph corderoy for the
736: impetus, and for pointing out a string termination bug in
737: qstring as well.
738:
739: Apr 21, 1999:
740: fixed bug that caused occasional core dumps with commandline
741: variable with value ending in \. (thanks to nelson beebe for
742: the test case.)
743:
1.8 millert 744: Apr 16, 1999:
1.25 millert 745: with code kindly provided by Bruce Lilly, awk now parses
1.8 millert 746: /=/ and similar constructs more sensibly in more places.
1.10 millert 747: Bruce also provided some helpful test cases.
1.8 millert 748:
749: Apr 5, 1999:
750: changed true/false to True/False in run.c to make it
751: easier to compile with C++. Added some casts on malloc
752: and realloc to be honest about casts; ditto. changed
753: ltype int to long in struct rrow to reduce some 64-bit
754: complaints; other changes scattered throughout for the
755: same purpose. thanks to Nelson Beebe for these portability
756: improvements.
757:
758: removed some horrible pointer-int casting in b.c and elsewhere
759: by adding ptoi and itonp to localize the casts, which are
760: all benign. fixed one incipient bug that showed up on sgi
761: in 64-bit mode.
762:
763: reset lineno for new source file; include filename in error
764: message. also fixed line number error in continuation lines.
765: (thanks to Nelson Beebe for both of these.)
766:
767: Mar 24, 1999:
768: Nelson Beebe notes that irix 5.3 yacc dies with a bogus
769: error; use a newer version or switch to bison, since sgi
770: is unlikely to fix it.
1.1 tholo 771:
1.7 millert 772: Mar 5, 1999:
1.9 millert 773: changed isnumber to is_number to avoid the problem caused by
774: versions of ctype.h that include the name isnumber.
1.7 millert 775:
776: distribution now includes a script for building on a Mac,
777: thanks to Dan Allen.
778:
779: Feb 20, 1999:
780: fixed memory leaks in run.c (call) and tran.c (setfval).
781: thanks to Stephen Nutt for finding these and providing the fixes.
782:
783: Jan 13, 1999:
784: replaced srand argument by (unsigned int) in run.c;
785: avoids problem on Mac and potentially on Unix & Windows.
786: thanks to Dan Allen.
787:
788: added a few (int) casts to silence useless compiler warnings.
789: e.g., errorflag= in run.c jump().
790:
791: added proctab.c to the bundle outout; one less thing
792: to have to compile out of the box.
793:
794: added calls to _popen and _pclose to the win95 stub for
795: pipes (thanks to Steve Adams for this helpful suggestion).
796: seems to work, though properties are not well understood
797: by me, and it appears that under some circumstances the
798: pipe output is truncated. Be careful.
799:
800: Oct 19, 1998:
801: fixed a couple of bugs in getrec: could fail to update $0
1.25 millert 802: after a getline var; because inputFS wasn't initialized,
1.7 millert 803: could split $0 on every character, a misleading diversion.
804:
805: fixed caching bug in makedfa: LRU was actually removing
806: least often used.
807:
808: thanks to ross ridge for finding these, and for providing
809: great bug reports.
810:
811: May 12, 1998:
812: fixed potential bug in readrec: might fail to update record
813: pointer after growing. thanks to dan levy for spotting this
814: and suggesting the fix.
815:
816: Mar 12, 1998:
817: added -V to print version number and die.
1.19 millert 818:
819: [notify dave kerns, dkerns@dacsoup.ih.lucent.com]
1.7 millert 820:
821: Feb 11, 1998:
822: subtle silent bug in lex.c: if the program ended with a number
823: longer than 1 digit, part of the input would be pushed back and
824: parsed again because token buffer wasn't terminated right.
825: example: awk 'length($0) > 10'. blush. at least i found it
826: myself.
827:
828: Aug 31, 1997:
829: s/adelete/awkdelete/: SGI uses this in malloc.h.
830: thanks to nelson beebe for pointing this one out.
831:
832: Aug 21, 1997:
833: fixed some bugs in sub and gsub when replacement includes \\.
834: this is a dark, horrible corner, but at least now i believe that
835: the behavior is the same as gawk and the intended posix standard.
836: thanks to arnold robbins for advice here.
837:
838: Aug 9, 1997:
839: somewhat regretfully, replaced the ancient lex-based lexical
840: analyzer with one written in C. it's longer, generates less code,
841: and more portable; the old one depended too much on mysterious
842: properties of lex that were not preserved in other environments.
843: in theory these recognize the same language.
844:
845: now using strtod to test whether a string is a number, instead of
846: the convoluted original function. should be more portable and
847: reliable if strtod is implemented right.
848:
849: removed now-pointless optimization in makefile that tries to avoid
850: recompilation when awkgram.y is changed but symbols are not.
851:
852: removed most fixed-size arrays, though a handful remain, some
853: of which are unchecked. you have been warned.
854:
855: Aug 4, 1997:
856: with some trepidation, replaced the ancient code that managed
857: fields and $0 in fixed-size arrays with arrays that grow on
858: demand. there is still some tension between trying to make this
859: run fast and making it clean; not sure it's right yet.
860:
861: the ill-conceived -mr and -mf arguments are now useful only
862: for debugging. previous dynamic string code removed.
863:
864: numerous other minor cleanups along the way.
1.1 tholo 865:
1.7 millert 866: Jul 30, 1997:
867: using code provided by dan levy (to whom profuse thanks), replaced
868: fixed-size arrays and awkward kludges by a fairly uniform mechanism
869: to grow arrays as needed for printf, sub, gsub, etc.
1.1 tholo 870:
1.7 millert 871: Jul 23, 1997:
872: falling off the end of a function returns "" and 0, not 0.
873: thanks to arnold robbins.
1.1 tholo 874:
1.7 millert 875: Jun 17, 1997:
876: replaced several fixed-size arrays by dynamically-created ones
877: in run.c; added overflow tests to some previously unchecked cases.
878: getline, toupper, tolower.
1.1 tholo 879:
1.7 millert 880: getline code is still broken in that recursive calls may wind
881: up using the same space. [fixed later]
1.1 tholo 882:
1.7 millert 883: increased RECSIZE to 8192 to push problems further over the horizon.
1.1 tholo 884:
1.7 millert 885: added \r to \n as input line separator for programs, not data.
886: damn CRLFs.
1.1 tholo 887:
1.7 millert 888: modified format() to permit explicit printf("%c", 0) to include
889: a null byte in output. thanks to ken stailey for the fix.
1.1 tholo 890:
1.7 millert 891: added a "-safe" argument that disables file output (print >,
892: print >>), process creation (cmd|getline, print |, system), and
893: access to the environment (ENVIRON). this is a first approximation
894: to a "safe" version of awk, but don't rely on it too much. thanks
895: to joan feigenbaum and matt blaze for the inspiration long ago.
1.1 tholo 896:
1.7 millert 897: Jul 8, 1996:
898: fixed long-standing bug in sub, gsub(/a/, "\\\\&"); thanks to
899: ralph corderoy.
1.1 tholo 900:
1.7 millert 901: Jun 29, 1996:
902: fixed awful bug in new field splitting; didn't get all the places
903: where input was done.
1.1 tholo 904:
1.7 millert 905: Jun 28, 1996:
906: changed field-splitting to conform to posix definition: fields are
907: split using the value of FS at the time of input; it used to be
908: the value when the field or NF was first referred to, a much less
909: predictable definition. thanks to arnold robbins for encouragement
910: to do the right thing.
1.1 tholo 911:
1.7 millert 912: May 28, 1996:
913: fixed appalling but apparently unimportant bug in parsing octal
914: numbers in reg exprs.
1.1 tholo 915:
1.7 millert 916: explicit hex in reg exprs now limited to 2 chars: \xa, \xaa.
1.1 tholo 917:
1.7 millert 918: May 27, 1996:
919: cleaned up some declarations so gcc -Wall is now almost silent.
1.1 tholo 920:
1.7 millert 921: makefile now includes backup copies of ytab.c and lexyy.c in case
922: one makes before looking; it also avoids recreating lexyy.c unless
923: really needed.
1.1 tholo 924:
1.7 millert 925: s/aprintf/awkprint, s/asprintf/awksprintf/ to avoid some name clashes
926: with unwisely-written header files.
1.1 tholo 927:
1.7 millert 928: thanks to jeffrey friedl for several of these.
1.1 tholo 929:
1.7 millert 930: May 26, 1996:
931: an attempt to rationalize the (unsigned) char issue. almost all
932: instances of unsigned char have been removed; the handful of places
933: in b.c where chars are used as table indices have been hand-crafted.
934: added some latin-1 tests to the regression, but i'm not confident;
935: none of my compilers seem to care much. thanks to nelson beebe for
936: pointing out some others that do care.
1.1 tholo 937:
1.7 millert 938: May 2, 1996:
939: removed all register declarations.
1.1 tholo 940:
1.7 millert 941: enhanced split(), as in gawk, etc: split(s, a, "") splits s into
942: a[1]...a[length(s)] with each character a single element.
1.1 tholo 943:
1.7 millert 944: made the same changes for field-splitting if FS is "".
1.1 tholo 945:
1.7 millert 946: added nextfile, as in gawk: causes immediate advance to next
947: input file. (thanks to arnold robbins for inspiration and code).
1.1 tholo 948:
1.7 millert 949: small fixes to regexpr code: can now handle []], [[], and
1.25 millert 950: variants; [] is now a syntax error, rather than matching
1.7 millert 951: everything; [z-a] is now empty, not z. far from complete
952: or correct, however. (thanks to jeffrey friedl for pointing out
953: some awful behaviors.)
1.1 tholo 954:
1.7 millert 955: Apr 29, 1996:
1.12 otto 956: replaced uchar by uschar everywhere; apparently some compilers
1.7 millert 957: usurp this name and this causes conflicts.
1.1 tholo 958:
1.7 millert 959: fixed call to time in run.c (bltin); arg is time_t *.
1.1 tholo 960:
1.7 millert 961: replaced horrible pointer/long punning in b.c by a legitimate
962: union. should be safer on 64-bit machines and cleaner everywhere.
963: (thanks to nelson beebe for pointing out some of these problems.)
1.1 tholo 964:
1.7 millert 965: replaced nested comments by #if 0...#endif in run.c, lib.c.
1.1 tholo 966:
1.7 millert 967: removed getsval, setsval, execute macros from run.c and lib.c.
968: machines are 100x faster than they were when these macros were
969: first used.
1.1 tholo 970:
1.7 millert 971: revised filenames: awk.g.y => awkgram.y, awk.lx.l => awklex.l,
972: y.tab.[ch] => ytab.[ch], lex.yy.c => lexyy.c, all in the aid of
973: portability to nameless systems.
1.1 tholo 974:
1.7 millert 975: "make bundle" now includes yacc and lex output files for recipients
976: who don't have yacc or lex.
1.1 tholo 977:
1.7 millert 978: Aug 15, 1995:
979: initialized Cells in setsymtab more carefully; some fields
980: were not set. (thanks to purify, all of whose complaints i
981: think i now understand.)
1.1 tholo 982:
1.7 millert 983: fixed at least one error in gsub that looked at -1-th element
984: of an array when substituting for a null match (e.g., $).
1.1 tholo 985:
1.7 millert 986: delete arrayname is now legal; it clears the elements but leaves
987: the array, which may not be the right behavior.
1.1 tholo 988:
1.7 millert 989: modified makefile: my current make can't cope with the test used
990: to avoid unnecessary yacc invocations.
1.1 tholo 991:
1.7 millert 992: Jul 17, 1995:
993: added dynamically growing strings to awk.lx.l and b.c
994: to permit regular expressions to be much bigger.
995: the state arrays can still overflow.
1.1 tholo 996:
1.7 millert 997: Aug 24, 1994:
998: detect duplicate arguments in function definitions (mdm).
1.1 tholo 999:
1.7 millert 1000: May 11, 1994:
1001: trivial fix to printf to limit string size in sub().
1.1 tholo 1002:
1.7 millert 1003: Apr 22, 1994:
1004: fixed yet another subtle self-assignment problem:
1005: $1 = $2; $1 = $1 clobbered $1.
1.1 tholo 1006:
1.7 millert 1007: Regression tests now use private echo, to avoid quoting problems.
1.1 tholo 1008:
1.7 millert 1009: Feb 2, 1994:
1010: changed error() to print line number as %d, not %g.
1.1 tholo 1011:
1.7 millert 1012: Jul 23, 1993:
1013: cosmetic changes: increased sizes of some arrays,
1014: reworded some error messages.
1.1 tholo 1015:
1.7 millert 1016: added CONVFMT as in posix (just replaced OFMT in getsval)
1.1 tholo 1017:
1.7 millert 1018: FILENAME is now "" until the first thing that causes a file
1019: to be opened.
1.1 tholo 1020:
1.7 millert 1021: Nov 28, 1992:
1022: deleted yyunput and yyoutput from proto.h;
1023: different versions of lex give these different declarations.
1.1 tholo 1024:
1.7 millert 1025: May 31, 1992:
1026: added -mr N and -mf N options: more record and fields.
1027: these really ought to adjust automatically.
1.1 tholo 1028:
1.7 millert 1029: cleaned up some error messages; "out of space" now means
1030: malloc returned NULL in all cases.
1.1 tholo 1031:
1.7 millert 1032: changed rehash so that if it runs out, it just returns;
1033: things will continue to run slow, but maybe a bit longer.
1.1 tholo 1034:
1.7 millert 1035: Apr 24, 1992:
1036: remove redundant close of stdin when using -f -.
1.1 tholo 1037:
1.7 millert 1038: got rid of core dump with -d; awk -d just prints date.
1.1 tholo 1039:
1.7 millert 1040: Apr 12, 1992:
1041: added explicit check for /dev/std(in,out,err) in redirection.
1042: unlike gawk, no /dev/fd/n yet.
1.1 tholo 1043:
1.7 millert 1044: added (file/pipe) builtin. hard to test satisfactorily.
1045: not posix.
1.1 tholo 1046:
1.7 millert 1047: Feb 20, 1992:
1048: recompile after abortive changes; should be unchanged.
1.1 tholo 1049:
1.7 millert 1050: Dec 2, 1991:
1051: die-casting time: converted to ansi C, installed that.
1.1 tholo 1052:
1.7 millert 1053: Nov 30, 1991:
1054: fixed storage leak in freefa, failing to recover [N]CCL.
1055: thanks to Bill Jones (jones@cs.usask.ca)
1.1 tholo 1056:
1.7 millert 1057: Nov 19, 1991:
1058: use RAND_MAX instead of literal in builtin().
1.1 tholo 1059:
1.7 millert 1060: Nov 12, 1991:
1061: cranked up some fixed-size arrays in b.c, and added a test for
1062: overflow in penter. thanks to mark larsen.
1.1 tholo 1063:
1.7 millert 1064: Sep 24, 1991:
1065: increased buffer in gsub. a very crude fix to a general problem.
1066: and again on Sep 26.
1.1 tholo 1067:
1.7 millert 1068: Aug 18, 1991:
1069: enforce variable name syntax for commandline variables: has to
1070: start with letter or _.
1.1 tholo 1071:
1.7 millert 1072: Jul 27, 1991:
1073: allow newline after ; in for statements.
1.1 tholo 1074:
1.7 millert 1075: Jul 21, 1991:
1076: fixed so that in self-assignment like $1=$1, side effects
1077: like recomputing $0 take place. (this is getting subtle.)
1.1 tholo 1078:
1.7 millert 1079: Jun 30, 1991:
1080: better test for detecting too-long output record.
1.1 tholo 1081:
1.7 millert 1082: Jun 2, 1991:
1083: better defense against very long printf strings.
1084: made break and continue illegal outside of loops.
1.1 tholo 1085:
1.7 millert 1086: May 13, 1991:
1087: removed extra arg on gettemp, tempfree. minor error message rewording.
1.1 tholo 1088:
1089: May 6, 1991:
1090: fixed silly bug in hex parsing in hexstr().
1091: removed an apparently unnecessary test in isnumber().
1092: warn about weird printf conversions.
1093: fixed unchecked array overwrite in relex().
1094:
1095: changed for (i in array) to access elements in sorted order.
1096: then unchanged it -- it really does run slower in too many cases.
1097: left the code in place, commented out.
1098:
1.7 millert 1099: Feb 10, 1991:
1100: check error status on all writes, to avoid banging on full disks.
1.1 tholo 1101:
1.7 millert 1102: Jan 28, 1991:
1103: awk -f - reads the program from stdin.
1.1 tholo 1104:
1.7 millert 1105: Jan 11, 1991:
1106: failed to set numeric state on $0 in cmd|getline context in run.c.
1.1 tholo 1107:
1.7 millert 1108: Nov 2, 1990:
1109: fixed sleazy test for integrality in getsval; use modf.
1.1 tholo 1110:
1.7 millert 1111: Oct 29, 1990:
1112: fixed sleazy buggy code in lib.c that looked (incorrectly) for
1113: too long input lines.
1.1 tholo 1114:
1.7 millert 1115: Oct 14, 1990:
1116: fixed the bug on p. 198 in which it couldn't deduce that an
1117: argument was an array in some contexts. replaced the error
1118: message in intest() by code that damn well makes it an array.
1.1 tholo 1119:
1.7 millert 1120: Oct 8, 1990:
1121: fixed horrible bug: types and values were not preserved in
1122: some kinds of self-assignment. (in assign().)
1.1 tholo 1123:
1.7 millert 1124: Aug 24, 1990:
1125: changed NCHARS to 256 to handle 8-bit characters in strings
1126: presented to match(), etc.
1.1 tholo 1127:
1.7 millert 1128: Jun 26, 1990:
1129: changed struct rrow (awk.h) to use long instead of int for lval,
1130: since cfoll() stores a pointer in it. now works better when int's
1131: are smaller than pointers!
1.1 tholo 1132:
1.7 millert 1133: May 6, 1990:
1134: AVA fixed the grammar so that ! is uniformly of the same precedence as
1135: unary + and -. This renders illegal some constructs like !x=y, which
1136: now has to be parenthesized as !(x=y), and makes others work properly:
1137: !x+y is (!x)+y, and x!y is x !y, not two pattern-action statements.
1138: (These problems were pointed out by Bob Lenk of Posix.)
1.1 tholo 1139:
1.7 millert 1140: Added \x to regular expressions (already in strings).
1141: Limited octal to octal digits; \8 and \9 are not octal.
1142: Centralized the code for parsing escapes in regular expressions.
1143: Added a bunch of tests to T.re and T.sub to verify some of this.
1.1 tholo 1144:
1.7 millert 1145: Feb 9, 1990:
1146: fixed null pointer dereference bug in main.c: -F[nothing]. sigh.
1.1 tholo 1147:
1.7 millert 1148: restored srand behavior: it returns the current seed.
1.1 tholo 1149:
1.7 millert 1150: Jan 18, 1990:
1151: srand now returns previous seed value (0 to start).
1.1 tholo 1152:
1.7 millert 1153: Jan 5, 1990:
1154: fix potential problem in tran.c -- something was freed,
1155: then used in freesymtab.
1.1 tholo 1156:
1.7 millert 1157: Oct 18, 1989:
1158: another try to get the max number of open files set with
1159: relatively machine-independent code.
1.1 tholo 1160:
1.7 millert 1161: small fix to input() in case of multiple reads after EOF.
1.1 tholo 1162:
1.7 millert 1163: Oct 11, 1989:
1164: FILENAME is now defined in the BEGIN block -- too many old
1165: programs broke.
1.1 tholo 1166:
1.7 millert 1167: "-" means stdin in getline as well as on the commandline.
1.1 tholo 1168:
1.7 millert 1169: added a bunch of casts to the code to tell the truth about
1170: char * vs. unsigned char *, a right royal pain. added a
1171: setlocale call to the front of main, though probably no one
1172: has it usefully implemented yet.
1.1 tholo 1173:
1.7 millert 1174: Aug 24, 1989:
1175: removed redundant relational tests against nullnode if parse
1176: tree already had a relational at that point.
1.1 tholo 1177:
1.7 millert 1178: Aug 11, 1989:
1179: fixed bug: commandline variable assignment has to look like
1180: var=something. (consider the man page for =, in file =.1)
1.1 tholo 1181:
1.7 millert 1182: changed number of arguments to functions to static arrays
1183: to avoid repeated malloc calls.
1.1 tholo 1184:
1.7 millert 1185: Aug 2, 1989:
1186: restored -F (space) separator
1.1 tholo 1187:
1.7 millert 1188: Jul 30, 1989:
1189: added -v x=1 y=2 ... for immediate commandline variable assignment;
1190: done before the BEGIN block for sure. they have to precede the
1191: program if the program is on the commandline.
1192: Modified Aug 2 to require a separate -v for each assignment.
1.1 tholo 1193:
1.7 millert 1194: Jul 10, 1989:
1195: fixed ref-thru-zero bug in environment code in tran.c
1.1 tholo 1196:
1.7 millert 1197: Jun 23, 1989:
1198: add newline to usage message.
1.1 tholo 1199:
1.7 millert 1200: Jun 14, 1989:
1201: added some missing ansi printf conversion letters: %i %X %E %G.
1202: no sensible meaning for h or L, so they may not do what one expects.
1.1 tholo 1203:
1.7 millert 1204: made %* conversions work.
1.1 tholo 1205:
1.7 millert 1206: changed x^y so that if n is a positive integer, it's done
1207: by explicit multiplication, thus achieving maximum accuracy.
1208: (this should be done by pow() but it seems not to be locally.)
1209: done to x ^= y as well.
1.1 tholo 1210:
1.7 millert 1211: Jun 4, 1989:
1212: ENVIRON array contains environment: if shell variable V=thing,
1213: ENVIRON["V"] is "thing"
1.1 tholo 1214:
1.7 millert 1215: multiple -f arguments permitted. error reporting is naive.
1216: (they were permitted before, but only the last was used.)
1.1 tholo 1217:
1.7 millert 1218: fixed a really stupid botch in the debugging macro dprintf
1.1 tholo 1219:
1.7 millert 1220: fixed order of evaluation of commandline assignments to match
1221: what the book claims: an argument of the form x=e is evaluated
1222: at the time it would have been opened if it were a filename (p 63).
1223: this invalidates the suggested answer to ex 4-1 (p 195).
1.1 tholo 1224:
1.7 millert 1225: removed some code that permitted -F (space) fieldseparator,
1226: since it didn't quite work right anyway. (restored aug 2)
1.1 tholo 1227:
1.7 millert 1228: Apr 27, 1989:
1229: Line number now accumulated correctly for comment lines.
1.1 tholo 1230:
1.7 millert 1231: Apr 26, 1989:
1232: Debugging output now includes a version date,
1233: if one compiles it into the source each time.
1.1 tholo 1234:
1.7 millert 1235: Apr 9, 1989:
1236: Changed grammar to prohibit constants as 3rd arg of sub and gsub;
1237: prevents class of overwriting-a-constant errors. (Last one?)
1238: This invalidates the "banana" example on page 43 of the book.
1.1 tholo 1239:
1.7 millert 1240: Added \a ("alert"), \v (vertical tab), \xhhh (hexadecimal),
1241: as in ANSI, for strings. Rescinded the sloppiness that permitted
1242: non-octal digits in \ooo. Warning: not all compilers and libraries
1243: will be able to deal with \x correctly.
1.1 tholo 1244:
1.7 millert 1245: Jan 9, 1989:
1246: Fixed bug that caused tempcell list to contain a duplicate.
1247: The fix is kludgy.
1.1 tholo 1248:
1.7 millert 1249: Dec 17, 1988:
1250: Catches some more commandline errors in main.
1251: Removed redundant decl of modf in run.c (confuses some compilers).
1252: Warning: there's no single declaration of malloc, etc., in awk.h
1253: that seems to satisfy all compilers.
1.1 tholo 1254:
1.7 millert 1255: Dec 7, 1988:
1256: Added a bit of code to error printing to avoid printing nulls.
1257: (Not clear that it actually would.)
1.1 tholo 1258:
1.7 millert 1259: Nov 27, 1988:
1260: With fear and trembling, modified the grammar to permit
1261: multiple pattern-action statements on one line without
1262: an explicit separator. By definition, this capitulation
1263: to the ghost of ancient implementations remains undefined
1264: and thus subject to change without notice or apology.
1265: DO NOT COUNT ON IT.
1.1 tholo 1266:
1.7 millert 1267: Oct 30, 1988:
1268: Fixed bug in call() that failed to recover storage.
1.1 tholo 1269:
1.7 millert 1270: A warning is now generated if there are more arguments
1271: in the call than in the definition (in lieu of fixing
1272: another storage leak).
1.2 millert 1273:
1.7 millert 1274: Oct 20, 1988:
1275: Fixed %c: if expr is numeric, use numeric value;
1276: otherwise print 1st char of string value. still
1277: doesn't work if the value is 0 -- won't print \0.
1.2 millert 1278:
1.7 millert 1279: Added a few more checks for running out of malloc.
1.2 millert 1280:
1.7 millert 1281: Oct 12, 1988:
1282: Fixed bug in call() that freed local arrays twice.
1.5 kstailey 1283:
1.7 millert 1284: Fixed to handle deletion of non-existent array right;
1285: complains about attempt to delete non-array element.
1.6 kstailey 1286:
1.7 millert 1287: Sep 30, 1988:
1288: Now guarantees to evaluate all arguments of built-in
1289: functions, as in C; the appearance is that arguments
1290: are evaluated before the function is called. Places
1291: affected are sub (gsub was ok), substr, printf, and
1292: all the built-in arithmetic functions in bltin().
1293: A warning is generated if a bltin() is called with
1294: the wrong number of arguments.
1.6 kstailey 1295:
1.7 millert 1296: This requires changing makeprof on p167 of the book.
1.6 kstailey 1297:
1.7 millert 1298: Aug 23, 1988:
1299: setting FILENAME in BEGIN caused core dump, apparently
1300: because it was freeing space not allocated by malloc.
1.6 kstailey 1301:
1.7 millert 1302: July 24, 1988:
1303: fixed egregious error in toupper/tolower functions.
1304: still subject to rescinding, however.
1.6 kstailey 1305:
1.7 millert 1306: July 2, 1988:
1307: flush stdout before opening file or pipe
1.6 kstailey 1308:
1.7 millert 1309: July 2, 1988:
1310: performance bug in b.c/cgoto(): not freeing some sets of states.
1311: partial fix only right now, and the number of states increased
1312: to make it less obvious.
1.6 kstailey 1313:
1.7 millert 1314: June 1, 1988:
1315: check error status on close
1.6 kstailey 1316:
1.7 millert 1317: May 28, 1988:
1318: srand returns seed value it's using.
1319: see 1/18/90
1.6 kstailey 1320:
1.7 millert 1321: May 22, 1988:
1322: Removed limit on depth of function calls.
1.6 kstailey 1323:
1.7 millert 1324: May 10, 1988:
1325: Fixed lib.c to permit _ in commandline variable names.
1.6 kstailey 1326:
1.7 millert 1327: Mar 25, 1988:
1328: main.c fixed to recognize -- as terminator of command-
1329: line options. Illegal options flagged.
1330: Error reporting slightly cleaned up.
1.6 kstailey 1331:
1.7 millert 1332: Dec 2, 1987:
1333: Newer C compilers apply a strict scope rule to extern
1334: declarations within functions. Two extern declarations in
1335: lib.c and tran.c have been moved to obviate this problem.
1.6 kstailey 1336:
1.7 millert 1337: Oct xx, 1987:
1338: Reluctantly added toupper and tolower functions.
1339: Subject to rescinding without notice.
1.6 kstailey 1340:
1.7 millert 1341: Sep 17, 1987:
1342: Error-message printer had printf(s) instead of
1343: printf("%s",s); got core dumps when the message
1344: included a %.
1.6 kstailey 1345:
1.7 millert 1346: Sep 12, 1987:
1347: Very long printf strings caused core dump;
1348: fixed aprintf, asprintf, format to catch them.
1349: Can still get a core dump in printf itself.
1.6 kstailey 1350:
1351:
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