Annotation of src/usr.bin/awk/FIXES, Revision 1.43
1.43 ! millert 1: /* $OpenBSD: FIXES,v 1.42 2021/11/12 15:16:58 millert Exp $ */
1.1 tholo 2: /****************************************************************
1.6 kstailey 3: Copyright (C) Lucent Technologies 1997
1.1 tholo 4: All Rights Reserved
5:
6: Permission to use, copy, modify, and distribute this software and
7: its documentation for any purpose and without fee is hereby
8: granted, provided that the above copyright notice appear in all
9: copies and that both that the copyright notice and this
10: permission notice and warranty disclaimer appear in supporting
1.6 kstailey 11: documentation, and that the name Lucent Technologies or any of
12: its entities not be used in advertising or publicity pertaining
13: to distribution of the software without specific, written prior
14: permission.
15:
16: LUCENT DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
17: INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS.
18: IN NO EVENT SHALL LUCENT OR ANY OF ITS ENTITIES BE LIABLE FOR ANY
19: SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
20: WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER
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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.
1.43 ! millert 28:
! 29: December 8, 2021:
! 30: The error handling in closefile and closeall was mangled. Long
! 31: standing warnings had been made fatal and some fatal errors went
! 32: undetected. Thanks to Miguel Pineiro Jr. <mpj@pineiro.cc>.
1.42 millert 33:
34: Nov 03, 2021:
35: getline accesses uninitialized data after getrec()
36: returns 0 on EOF and leaves the contents of buf unchanged.
37: Thanks to Volodymyr Gubarkov, and Todd C Miller.
1.41 millert 38:
39: Oct 12, 2021:
40: The fix for #83 changed the code to insert 2 chars, but the
41: call to adjbuf just above it only allows for 1 char. This can
42: cause a heap buffer overflow.
43:
44: July 27, 2021:
45: As per IEEE Std 1003.1-2008, -F "str" is now consistent with
46: -v FS="str" when str is null. Thanks to Warner Losh.
47:
48: July 24, 2021:
49: Fix readrec's definition of a record. This fixes an issue
50: with NetBSD's RS regular expression support that can cause
51: an infinite read loop. Thanks to Miguel Pineiro Jr.
52:
53: Fix regular expression RS ^-anchoring. RS ^-anchoring needs to
54: know if it is reading the first record of a file. This change
55: restores a missing line that was overlooked when porting NetBSD's
56: RS regex functionality. Thanks to Miguel Pineiro Jr.
57:
58: Fix size computation in replace_repeat() for special case
59: REPEAT_WITH_Q. Thanks to Todd C. Miller.
60:
61: February 15, 2021:
62: Small fix so that awk will compile again with g++. Thanks to
63: Arnold Robbins.
64:
65: January 06, 2021:
66: Fix a decision bug with trailing stuff in lib.c:is_valid_number
67: after recent changes. Thanks to Ozan Yigit.
1.40 millert 68:
69: December 18, 2020:
70: Fix problems converting inf and NaN values in lib.c:is_valid_number.
71: Enhance number to string conversion to do the right thing for
72: NaN and inf values. Things are now pretty much the same as in
73: gawk. (Found a gawk bug while we're at it.) Added a torture
74: test for these values. Thanks to Arnold Robbins. Allows closing
75: of PR #101.
76:
77: December 15, 2020:
78: Merge PR #99, which gets the right header for strcasecmp.
79: Thanks to GitHub user michaelforney.
1.39 millert 80:
81: December 8, 2020:
82: Merge PR #98: Disallow hex data. Allow only +nan, -nan,
83: +inf, -inf (case independent) to give NaN and infinity values.
84: Improve things so that string to double conversion is only
85: done once, yielding something of a speedup. This obviate
86: PR #95. Thanks to Arnold Robbins.
87:
88: December 3, 2020:
89: Fix to argument parsing to avoid printing spurious newlines.
90: Thanks to Todd Miller. Merges PR #97.
91:
92: October 13, 2020:
93: Add casts before all the calls to malloc/calloc/realloc in order
94: to get it to compile with g++. Thanks to Arnold Robbins.
95:
96: August 16, 2020:
97: Additional fixes for DJGPP. Thanks to Eli Zaretskii for
98: the testing.
1.38 millert 99:
100: August 7, 2020:
101: Merge PR #93, which adds casts to (void*) for debug prints
102: using the %p format specifier. Thanks to GitHub user YongHaoWu
103: ("Chris") for the fixes.
104:
105: August 4, 2020:
106: In run.c, use non-restartable multibyte routines to attain
107: portability to DJGPP. Should fix Issue 92. Thanks to Albert Wik
108: for the report and to Todd Miller for the suggested fix.
1.37 millert 109:
110: July 30, 2020:
111: Merge PRs 88-91 which fix small bugs. Thanks to Todd Miller and
112: Tim van der Molen for the fixes.
113:
114: In order to make life easier, we move exclusively to bison
115: as the parser generator.
1.36 millert 116:
117: July 2, 2020:
118: Merge PRs 85 and 86 which fix regressions. Thanks to
119: Tim van der Molen for the fixes.
1.35 millert 120:
121: June 25, 2020:
122: Merge PRs 82 and 84. The latter fixes issue #83. Thanks to
123: Todd Miller and awkfan77.
1.34 millert 124:
125: June 12, 2020:
126: Clear errno before calling errcheck to avoid any spurious errors
127: left over from previous calls that may have set it. Thanks to
128: Todd Miller for the fix, from PR #80.
129:
130: Fix Issue #78 by allowing \r to follow floating point numbers in
131: lib.c:is_number. Thanks to GitHub user ajcarr for the report
132: and to Arnold Robbins for the fix.
1.33 millert 133:
134: June 5, 2020:
135: In fldbld(), make sure that inputFS is set before trying to
136: use it. Thanks to Steffen Nurpmeso <steffen@sdaoden.eu>
137: for the report.
138:
139: May 5, 2020:
140: Fix checks for compilers that can handle noreturn. Thanks to
141: GitHub user enh-google for pointing it out. Closes Issue #79.
142:
143: April 16, 2020:
144: Handle old compilers that don't support C11 (for noreturn).
145: Thanks to Arnold Robbins.
146:
147: April 5, 2020:
148: Use <stdnoreturn.h> and noreturn instead of GCC attributes.
149: Thanks to GitHub user awkfan77. Closes PR #77.
1.30 millert 150:
1.32 millert 151: February 28, 2020:
152: More cleanups from Christos Zoulas: notably backslash continuation
153: inside strings removes the newline and a fix for RS = "^a".
154: Fix for address sanitizer-found problem. Thanks to GitHub user
155: enh-google.
156:
157: February 19, 2020:
158: More small cleanups from Christos Zoulas.
159:
160: February 18, 2020:
161: Additional cleanups from Christos Zoulas. It's no longer necessary
162: to use the -y flag to bison.
163:
164: February 6, 2020:
165: Additional small cleanups from Christos Zoulas. awk is now
166: a little more robust about reporting I/O errors upon exit.
167:
1.31 millert 168: January 31, 2020:
169: Merge PR #70, which avoids use of variable length arrays. Thanks
170: to GitHub user michaelforney. Fix issue #60 ({0} in interval
1.32 millert 171: expressions doesn't work). Also get all tests working again.
172: Thanks to Arnold Robbins.
1.31 millert 173:
174: January 24, 2020:
175: A number of small cleanups from Christos Zoulas. Add the close
176: on exec flag to files/pipes opened for redirection; courtesy of
177: Arnold Robbins.
178:
179: January 19, 2020:
180: If POSIXLY_CORRECT is set in the environment, then sub and gsub
181: use POSIX rules for multiple backslashes. This fixes Issue #66,
182: while maintaining backwards compatibility.
183:
184: January 9, 2020:
185: Input/output errors on closing files are now fatal instead of
186: mere warnings. Thanks to Martijn Dekker <martijn@inlv.org>.
187:
1.30 millert 188: January 5, 2020:
189: Fix a bug in the concatentation of two string constants into
190: one done in the grammar. Fixes GitHub issue #61. Thanks
191: to GitHub user awkfan77 for pointing out the direction for
192: the fix. New test T.concat added to the test suite.
193: Fix a few memory leaks reported by valgrind, as well.
194:
195: December 27, 2019:
196: Fix a bug whereby a{0,3} could match four a's. Thanks to
197: "Anonymous AWK fan" for the report.
198:
199: December 11, 2019:
200: Further printf-related fixes for 32 bit systems.
201: Thanks again to Christos Zoulas.
202:
203: December 8, 2019:
204: Fix the return value of sprintf("%d") on 32 bit systems.
205: Thanks to Jim Lowe for the report and to Christos Zoulas
206: for the fix.
1.29 millert 207:
208: November 10, 2019:
209: Convert a number of Boolean integer variables into
210: actual bools. Convert compile_time variable into an
211: enum and simplify some of the related code. Thanks
212: to Arnold Robbins.
213:
214: November 8, 2019:
215: Fix from Ori Bernstein to get UTF-8 characters instead of
216: bytes when FS = "". This is currently the only bit of
217: the One True Awk that understands multibyte characters.
218: From Arnold Robbins, apply some cleanups in the test suite.
1.28 millert 219:
220: October 25, 2019:
221: More fixes and cleanups from NetBSD, courtesy of Christos
222: Zoulas. Merges PRs 54 and 55.
223:
224: October 24, 2019:
225: Import second round of code cleanups from NetBSD. Much thanks
1.31 millert 226: to Christos Zoulas (GitHub user zoulasc). Merges PR 53.
1.28 millert 227: Add an optimization for string concatenation, also from
228: Christos.
1.27 millert 229:
230: October 17, 2019:
231: Import code cleanups from NetBSD. Much thanks to Christos
1.31 millert 232: Zoulas (GitHub user zoulasc). Merges PR 51.
1.26 millert 233:
234: October 6, 2019:
235: Import code from NetBSD awk that implements RS as a regular
236: expression.
1.23 millert 237:
1.25 millert 238: September 10, 2019:
239: Fixes for various array / memory overruns found via gcc's
1.31 millert 240: -fsanitize=unknown. Thanks to Alexander Richardson (GitHub
1.25 millert 241: user arichardson). Merges PRs 47 and 48.
242:
243: July 28, 2019:
244: Import grammar optimization from NetBSD: Two string constants
245: concatenated together get turned into a single string.
246:
247: July 26, 2019:
248: Support POSIX-specified C-style escape sequences "\a" (alarm)
249: and "\v" (vertical tab) in command line arguments and regular
250: expressions, further to the support for them in strings added on
251: Apr 9, 1989. These now no longer match as literal "a" and "v"
252: characters (as they don't on other awk implementations).
253: Thanks to Martijn Dekker.
254:
255: July 17, 2019:
256: Pull in a number of code cleanups and minor fixes from
257: Warner Losh's bsd-ota branch. The only user visible change
258: is the use of random(3) as the random number generator.
259: Thanks to Warner Losh for collecting all these fixes in
260: one easy place to get them from.
261:
262: July 16, 2019:
263: Fix field splitting to use FS value as of the time a record
264: was read or assigned to. Thanks to GitHub user Cody Mello (melloc)
265: for the fix. (Merged from his branch, via PR #42.) Updated
266: testdir/T.split per said PR as well.
267:
268: June 24, 2019:
269: Extract awktest.tar into testdir directory. Add some very
270: simple mechanics to the makefile for running the tests and
271: for cleaning up. No changes to awk itself.
272:
1.24 millert 273: June 17, 2019:
274: Disallow deleting SYMTAB and its elements, which creates
275: use-after-free bugs. Thanks to GitHub user Cody Mello (melloc)
276: for the fix. (Merged from PR #43.)
277:
278: June 5, 2019:
279: Allow unmatched right parenthesis in a regular expression to
280: be treated literally. Fixes Issue #40. Thanks to GitHub user
281: Warner Losh (bsdimp) for the report. Thanks to Arnold Robbins
282: for the fix.
283:
284: May 29,2019:
285: Fix check for command line arguments to no longer require that
286: first character after '=' not be another '='. Reverts change of
287: August 11, 1989. Thanks to GitHub user Jamie Landeg Jones for
288: pointing out the issue; from Issue #38.
289:
290: Apr 7, 2019:
291: Update awktest.tar(p.50) to use modern options to sort. Needed
292: for Android development. Thanks to GitHub user mohd-akram (Mohamed
293: Akram). From Issue #33.
294:
295: Mar 12, 2019:
296: Added very simplistic support for cross-compiling in the
297: makefile. We are NOT going to go in the direction of the
298: autotools, though. Thanks to GitHub user nee-san for
299: the basic change. (Merged from PR #34.)
300:
1.23 millert 301: Mar 5, 2019:
302: Added support for POSIX-standard interval expressions (a.k.a.
303: bounds, a.k.a. repetition expressions) in regular expressions,
304: backported (via NetBSD) from Apple awk-24 (20070501).
305: Thanks to Martijn Dekker <martijn@inlv.org> for the port.
306: (Merged from PR #30.)
307:
308: Mar 3, 2019:
309: Merge PRs as follows:
310: #12: Avoid undefined behaviour when using ctype(3) functions in
311: relex(). Thanks to GitHub user iamleot.
312: #31: Make getline handle numeric strings, and update FIXES. Thanks
1.24 millert 313: to GitHub user arnoldrobbins.
1.23 millert 314: #32: maketab: support build systems with read-only source. Thanks
315: to GitHub user enh.
1.22 millert 316:
317: Jan 25, 2019:
318: Make getline handle numeric strings properly in all cases.
319: (Thanks, Arnold.)
320:
321: Jan 21, 2019:
322: Merged a number of small fixes from GitHub pull requests.
323: Thanks to GitHub users Arnold Robbins (arnoldrobbins),
324: Cody Mello (melloc) and Christoph Junghans (junghans).
325: PR numbers: 13-21, 23, 24, 27.
1.21 millert 326:
327: Oct 25, 2018:
328: Added test in maketab.c to prevent generating a proctab entry
329: for YYSTYPE_IS_DEFINED. It was harmless but some gcc settings
330: generated a warning message. Thanks to Nan Xiao for report.
1.20 millert 331:
332: Aug 27, 2018:
333: Disallow '$' in printf formats; arguments evaluated in order
334: and printed in order.
335:
336: Added some casts to silence warnings on debugging printfs.
337: (Thanks, Arnold.)
1.18 millert 338:
1.19 millert 339: Aug 23, 2018:
340: A long list of fixes courtesy of Arnold Robbins,
341: to whom profound thanks.
342:
343: 1. ofs-rebuild: OFS value used to rebuild the record was incorrect.
344: Fixed August 19, 2014. Revised fix August 2018.
345:
346: 2. system-status: Instead of a floating-point division by 256, use
347: the wait(2) macros to create a reasonable exit status.
348: Fixed March 12, 2016.
349:
350: 3. space: Use provided xisblank() function instead of ispace() for
351: matching [[:blank:]].
352:
353: 4. a-format: Add POSIX standard %a and %A to supported formats. Check
354: at runtime that this format is available.
355:
356: 5. decr-NF: Decrementing NF did not change $0. This is a decades-old
357: bug. There are interactions with the old and new value of OFS as well.
358: Most of the fix came from the NetBSD awk.
359:
360: 6. string-conv: String conversions of scalars were sticky. Once a
361: conversion to string happened, even with OFMT, that value was used until
362: a new numeric value was assigned, even if OFMT differed from CONVFMT,
363: and also if CONVFMT changed.
364:
365: 7. unary-plus: Unary plus on a string constant returned the string.
366: Instead, it should convert the value to numeric and give that value.
367:
368: Also added Arnold's tests for these to awktest.tar as T.arnold.
369:
370: Aug 15, 2018:
371: fixed mangled awktest.tar (thanks, Arnold), posted all
372: current (very minor) fixes to github / onetrueawk
373:
1.18 millert 374: Jun 7, 2018:
375: (yes, a long layoff)
376: Updated some broken tests (beebe.tar, T.lilly)
377: [thanks to Arnold Robbins]
378:
379: Mar 26, 2015:
380: buffer overflow in error reporting; thanks to tobias ulmer
381: and john-mark gurney for spotting it and the fix.
382:
383: Feb 4, 2013:
384: cleaned up a handful of tests that didn't seem to actually
385: test for correct behavior: T.latin1, T.gawk.
386:
387: Jan 5, 2013:
388: added ,NULL initializer to static Cells in run.c; not really
389: needed but cleaner. Thanks to Michael Bombardieri.
1.17 millert 390:
391: Dec 20, 2012:
392: fiddled makefile to get correct yacc and bison flags. pick yacc
393: (linux) or bison (mac) as necessary.
394:
395: added __attribute__((__noreturn__)) to a couple of lines in
396: proto.h, to silence someone's enthusiastic checker.
397:
398: fixed obscure call by value bug in split(a[1],a) reported on
399: 9fans. the management of temporary values is just a mess; i
400: took a shortcut by making an extra string copy. thanks
401: to paul patience and arnold robbins for passing it on and for
402: proposed patches.
403:
404: tiny fiddle in setfval to eliminate -0 results in T.expr, which
405: has irritated me for 20+ years.
1.16 millert 406:
407: Aug 10, 2011:
408: another fix to avoid core dump with delete(ARGV); again, many thanks
409: to ruslan ermilov.
410:
411: Aug 7, 2011:
412: split(s, a, //) now behaves the same as split(s, a, "")
413:
414: Jun 12, 2011:
415: /pat/, \n /pat/ {...} is now legal, though bad style to use.
416:
417: added checks to new -v code that permits -vnospace; thanks to
1.25 millert 418: ruslan ermilov for spotting this and providing the patch.
1.16 millert 419:
420: removed fixed limit on number of open files; thanks to aleksey
1.25 millert 421: cheusov and christos zoulos.
1.16 millert 422:
423: fixed day 1 bug that resurrected deleted elements of ARGV when
424: used as filenames (in lib.c).
425:
426: minor type fiddles to make gcc -Wall -pedantic happier (but not
427: totally so); turned on -fno-strict-aliasing in makefile.
428:
429: May 6, 2011:
430: added #ifdef for isblank.
431: now allows -ffoo as well as -f foo arguments.
432: (thanks, ruslan)
433:
434: May 1, 2011:
435: after advice from todd miller, kevin lo, ruslan ermilov,
436: and arnold robbins, changed srand() to return the previous
437: seed (which is 1 on the first call of srand). the seed is
438: an Awkfloat internally though converted to unsigned int to
1.25 millert 439: pass to the library srand(). thanks, everyone.
1.16 millert 440:
441: fixed a subtle (and i hope low-probability) overflow error
1.25 millert 442: in fldbld, by adding space for one extra \0. thanks to
1.16 millert 443: robert bassett for spotting this one and providing a fix.
444:
445: removed the files related to compilation on windows. i no
446: longer have anything like a current windows environment, so
447: i can't test any of it.
1.15 millert 448:
449: May 23, 2010:
450: fixed long-standing overflow bug in run.c; many thanks to
451: nelson beebe for spotting it and providing the fix.
452:
453: fixed bug that didn't parse -vd=1 properly; thanks to santiago
454: vila for spotting it.
455:
456: Feb 8, 2010:
457: i give up. replaced isblank with isspace in b.c; there are
458: no consistent header files.
459:
460: Nov 26, 2009:
461: fixed a long-standing issue with when FS takes effect. a
462: change to FS is now noticed immediately for subsequent splits.
463:
464: changed the name getline() to awkgetline() to avoid yet another
465: name conflict somewhere.
466:
467: Feb 11, 2009:
468: temporarily for now defined HAS_ISBLANK, since that seems to
469: be the best way through the thicket. isblank arrived in C99,
470: but seems to be arriving at different systems at different
471: times.
472:
473: Oct 8, 2008:
474: fixed typo in b.c that set tmpvec wrongly. no one had ever
475: run into the problem, apparently. thanks to alistair crooks.
1.14 millert 476:
477: Oct 23, 2007:
478: minor fix in lib.c: increase inputFS to 100, change malloc
1.25 millert 479: for fields to n+1.
1.14 millert 480:
481: fixed memory fault caused by out of order test in setsval.
482:
483: thanks to david o'brien, freebsd, for both fixes.
484:
485: May 1, 2007:
486: fiddle in makefile to fix for BSD make; thanks to igor sobrado.
487:
488: Mar 31, 2007:
489: fixed some null pointer refs calling adjbuf.
490:
491: Feb 21, 2007:
492: fixed a bug in matching the null RE in sub and gsub. thanks to al aho
493: who actually did the fix (in b.c), and to wolfgang seeberg for finding
494: it and providing a very compact test case.
495:
496: fixed quotation in b.c; thanks to Hal Pratt and the Princeton Dante
497: Project.
498:
499: removed some no-effect asserts in run.c.
500:
501: fiddled maketab.c to not complain about bison-generated values.
502:
503: removed the obsolete -V argument; fixed --version to print the
504: version and exit.
505:
506: fixed wording and an outright error in the usage message; thanks to igor
507: sobrado and jason mcintyre.
508:
509: fixed a bug in -d that caused core dump if no program followed.
510:
511: Jan 1, 2007:
512: dropped mac.code from makefile; there are few non-MacOSX
513: mac's these days.
514:
515: Jan 17, 2006:
516: system() not flagged as unsafe in the unadvertised -safe option.
517: found it while enhancing tests before shipping the ;login: article.
518: practice what you preach.
519:
520: removed the 9-years-obsolete -mr and -mf flags.
521:
522: added -version and --version options.
523:
524: core dump on linux with BEGIN {nextfile}, now fixed.
525:
1.25 millert 526: removed some #ifdef's in run.c and lex.c that appear to no
1.14 millert 527: longer be necessary.
528:
529: Apr 24, 2005:
530: modified lib.c so that values of $0 et al are preserved in the END
531: block, apparently as required by posix. thanks to havard eidnes
532: for the report and code.
533:
534: Jan 14, 2005:
535: fixed infinite loop in parsing, originally found by brian tsang.
536: thanks to arnold robbins for a suggestion that started me
537: rethinking it.
538:
539: Dec 31, 2004:
1.25 millert 540: prevent overflow of -f array in main, head off potential error in
541: call of SYNTAX(), test malloc return in lib.c, all with thanks to
1.14 millert 542: todd miller.
1.13 millert 543:
544: Dec 22, 2004:
545: cranked up size of NCHARS; coverity thinks it can be overrun with
546: smaller size, and i think that's right. added some assertions to b.c
547: to catch places where it might overrun. the RE code is still fragile.
548:
549: Dec 5, 2004:
550: fixed a couple of overflow problems with ridiculous field numbers:
551: e.g., print $(2^32-1). thanks to ruslan ermilov, giorgos keramidas
552: and david o'brien at freebsd.org for patches. this really should
553: be re-done from scratch.
554:
555: Nov 21, 2004:
556: fixed another 25-year-old RE bug, in split. it's another failure
557: to (re-)initialize. thanks to steve fisher for spotting this and
558: providing a good test case.
559:
560: Nov 22, 2003:
561: fixed a bug in regular expressions that dates (so help me) from 1977;
562: it's been there from the beginning. an anchored longest match that
563: was longer than the number of states triggered a failure to initialize
564: the machine properly. many thanks to moinak ghosh for not only finding
565: this one but for providing a fix, in some of the most mysterious
566: code known to man.
567:
568: fixed a storage leak in call() that appears to have been there since
1.25 millert 569: 1983 or so -- a function without an explicit return that assigns a
570: string to a parameter leaked a Cell. thanks to moinak ghosh for
1.13 millert 571: spotting this very subtle one.
572:
573: Jul 31, 2003:
574: fixed, thanks to andrey chernov and ruslan ermilov, a bug in lex.c
575: that mis-handled the character 255 in input. (it was being compared
576: to EOF with a signed comparison.)
577:
578: Jul 29, 2003:
579: fixed (i think) the long-standing botch that included the beginning of
580: line state ^ for RE's in the set of valid characters; this led to a
581: variety of odd problems, including failure to properly match certain
582: regular expressions in non-US locales. thanks to ruslan for keeping
583: at this one.
584:
585: Jul 28, 2003:
586: n-th try at getting internationalization right, with thanks to volker
587: kiefel, arnold robbins and ruslan ermilov for advice, though they
588: should not be blamed for the outcome. according to posix, "." is the
589: radix character in programs and command line arguments regardless of
590: the locale; otherwise, the locale should prevail for input and output
591: of numbers. so it's intended to work that way.
1.25 millert 592:
1.13 millert 593: i have rescinded the attempt to use strcoll in expanding shorthands in
594: regular expressions (cclenter). its properties are much too
595: surprising; for example [a-c] matches aAbBc in locale en_US but abBcC
596: in locale fr_CA. i can see how this might arise by implementation
597: but i cannot explain it to a human user. (this behavior can be seen
598: in gawk as well; we're leaning on the same library.)
599:
600: the issue appears to be that strcoll is meant for sorting, where
601: merging upper and lower case may make sense (though note that unix
602: sort does not do this by default either). it is not appropriate
603: for regular expressions, where the goal is to match specific
604: patterns of characters. in any case, the notations [:lower:], etc.,
605: are available in awk, and they are more likely to work correctly in
606: most locales.
607:
608: a moratorium is hereby declared on internationalization changes.
609: i apologize to friends and colleagues in other parts of the world.
610: i would truly like to get this "right", but i don't know what
611: that is, and i do not want to keep making changes until it's clear.
612:
613: Jul 4, 2003:
614: fixed bug that permitted non-terminated RE, as in "awk /x".
615:
616: Jun 1, 2003:
617: subtle change to split: if source is empty, number of elems
618: is always 0 and the array is not set.
619:
620: Mar 21, 2003:
621: added some parens to isblank, in another attempt to make things
622: internationally portable.
623:
624: Mar 14, 2003:
625: the internationalization changes, somewhat modified, are now
626: reinstated. in theory awk will now do character comparisons
627: and case conversions in national language, but "." will always
628: be the decimal point separator on input and output regardless
629: of national language. isblank(){} has an #ifndef.
630:
631: this no longer compiles on windows: LC_MESSAGES isn't defined
632: in vc6++.
633:
634: fixed subtle behavior in field and record splitting: if FS is
635: a single character and RS is not empty, \n is NOT a separator.
636: this tortuous reading is found in the awk book; behavior now
637: matches gawk and mawk.
1.11 millert 638:
639: Dec 13, 2002:
640: for the moment, the internationalization changes of nov 29 are
641: rolled back -- programs like x = 1.2 don't work in some locales,
642: because the parser is expecting x = 1,2. until i understand this
643: better, this will have to wait.
644:
645: Nov 29, 2002:
646: modified b.c (with tiny changes in main and run) to support
647: locales, using strcoll and iswhatever tests for posix character
648: classes. thanks to ruslan ermilov (ru@freebsd.org) for code.
649: the function isblank doesn't seem to have propagated to any
650: header file near me, so it's there explicitly. not properly
651: tested on non-ascii character sets by me.
652:
653: Jun 28, 2002:
654: modified run/format() and tran/getsval() to do a slightly better
655: job on using OFMT for output from print and CONVFMT for other
1.25 millert 656: number->string conversions, as promised by posix and done by
1.11 millert 657: gawk and mawk. there are still places where it doesn't work
658: right if CONVFMT is changed; by then the STR attribute of the
659: variable has been irrevocably set. thanks to arnold robbins for
660: code and examples.
661:
662: fixed subtle bug in format that could get core dump. thanks to
663: Jaromir Dolecek <jdolecek@NetBSD.org> for finding and fixing.
664: minor cleanup in run.c / format() at the same time.
665:
666: added some tests for null pointers to debugging printf's, which
667: were never intended for external consumption. thanks to dave
668: kerns (dkerns@lucent.com) for pointing this out.
669:
670: GNU compatibility: an empty regexp matches anything (thanks to
671: dag-erling smorgrav, des@ofug.org). subject to reversion if
672: this does more harm than good.
673:
674: pervasive small changes to make things more const-correct, as
675: reported by gcc's -Wwrite-strings. as it says in the gcc manual,
676: this may be more nuisance than useful. provoked by a suggestion
677: and code from arnaud desitter, arnaud@nimbus.geog.ox.ac.uk
678:
679: minor documentation changes to note that this now compiles out
680: of the box on Mac OS X.
681:
682: Feb 10, 2002:
683: changed types in posix chars structure to quiet solaris cc.
684:
685: Jan 1, 2002:
686: fflush() or fflush("") flushes all files and pipes.
687:
1.25 millert 688: length(arrayname) returns number of elements; thanks to
1.11 millert 689: arnold robbins for suggestion.
690:
691: added a makefile.win to make it easier to build on windows.
692: based on dan allen's buildwin.bat.
693:
694: Nov 16, 2001:
695: added support for posix character class names like [:digit:],
696: which are not exactly shorter than [0-9] and perhaps no more
697: portable. thanks to dag-erling smorgrav for code.
698:
699: Feb 16, 2001:
700: removed -m option; no longer needed, and it was actually
701: broken (noted thanks to volker kiefel).
702:
703: Feb 10, 2001:
704: fixed an appalling bug in gettok: any sequence of digits, +,-, E, e,
705: and period was accepted as a valid number if it started with a period.
706: this would never have happened with the lex version.
707:
708: other 1-character botches, now fixed, include a bare $ and a
709: bare " at the end of the input.
710:
711: Feb 7, 2001:
712: more (const char *) casts in b.c and tran.c to silence warnings.
1.8 millert 713:
1.10 millert 714: Nov 15, 2000:
715: fixed a bug introduced in august 1997 that caused expressions
716: like $f[1] to be syntax errors. thanks to arnold robbins for
717: noticing this and providing a fix.
718:
719: Oct 30, 2000:
720: fixed some nextfile bugs: not handling all cases. thanks to
721: arnold robbins for pointing this out. new regressions added.
722:
723: close() is now a function. it returns whatever the library
724: fclose returns, and -1 for closing a file or pipe that wasn't
725: opened.
726:
727: Sep 24, 2000:
728: permit \n explicitly in character classes; won't work right
729: if comes in as "[\n]" but ok as /[\n]/, because of multiple
730: processing of \'s. thanks to arnold robbins.
731:
732: July 5, 2000:
733: minor fiddles in tran.c to keep compilers happy about uschar.
734: thanks to norman wilson.
735:
736: May 25, 2000:
737: yet another attempt at making 8-bit input work, with another
1.25 millert 738: band-aid in b.c (member()), and some (uschar) casts to head
1.10 millert 739: off potential errors in subscripts (like isdigit). also
740: changed HAT to NCHARS-2. thanks again to santiago vila.
741:
742: changed maketab.c to ignore apparently out of range definitions
743: instead of halting; new freeBSD generates one. thanks to
744: jon snader <jsnader@ix.netcom.com> for pointing out the problem.
745:
746: May 2, 2000:
747: fixed an 8-bit problem in b.c by making several char*'s into
748: unsigned char*'s. not clear i have them all yet. thanks to
749: Santiago Vila <sanvila@unex.es> for the bug report.
750:
751: Apr 21, 2000:
752: finally found and fixed a memory leak in function call; it's
753: been there since functions were added ~1983. thanks to
754: jon bentley for the test case that found it.
755:
756: added test in envinit to catch environment "variables" with
1.12 otto 757: names beginning with '='; thanks to Berend Hasselman.
1.10 millert 758:
759: Jul 28, 1999:
760: added test in defn() to catch function foo(foo), which
761: otherwise recurses until core dump. thanks to arnold
762: robbins for noticing this.
763:
1.9 millert 764: Jun 20, 1999:
765: added *bp in gettok in lex.c; appears possible to exit function
766: without terminating the string. thanks to russ cox.
767:
768: Jun 2, 1999:
769: added function stdinit() to run to initialize files[] array,
770: in case stdin, etc., are not constants; some compilers care.
771:
772: May 10, 1999:
773: replaced the ERROR ... FATAL, etc., macros with functions
774: based on vprintf, to avoid problems caused by overrunning
775: fixed-size errbuf array. thanks to ralph corderoy for the
776: impetus, and for pointing out a string termination bug in
777: qstring as well.
778:
779: Apr 21, 1999:
780: fixed bug that caused occasional core dumps with commandline
781: variable with value ending in \. (thanks to nelson beebe for
782: the test case.)
783:
1.8 millert 784: Apr 16, 1999:
1.25 millert 785: with code kindly provided by Bruce Lilly, awk now parses
1.8 millert 786: /=/ and similar constructs more sensibly in more places.
1.10 millert 787: Bruce also provided some helpful test cases.
1.8 millert 788:
789: Apr 5, 1999:
790: changed true/false to True/False in run.c to make it
791: easier to compile with C++. Added some casts on malloc
792: and realloc to be honest about casts; ditto. changed
793: ltype int to long in struct rrow to reduce some 64-bit
794: complaints; other changes scattered throughout for the
795: same purpose. thanks to Nelson Beebe for these portability
796: improvements.
797:
798: removed some horrible pointer-int casting in b.c and elsewhere
799: by adding ptoi and itonp to localize the casts, which are
800: all benign. fixed one incipient bug that showed up on sgi
801: in 64-bit mode.
802:
803: reset lineno for new source file; include filename in error
804: message. also fixed line number error in continuation lines.
805: (thanks to Nelson Beebe for both of these.)
806:
807: Mar 24, 1999:
808: Nelson Beebe notes that irix 5.3 yacc dies with a bogus
809: error; use a newer version or switch to bison, since sgi
810: is unlikely to fix it.
1.1 tholo 811:
1.7 millert 812: Mar 5, 1999:
1.9 millert 813: changed isnumber to is_number to avoid the problem caused by
814: versions of ctype.h that include the name isnumber.
1.7 millert 815:
816: distribution now includes a script for building on a Mac,
817: thanks to Dan Allen.
818:
819: Feb 20, 1999:
820: fixed memory leaks in run.c (call) and tran.c (setfval).
821: thanks to Stephen Nutt for finding these and providing the fixes.
822:
823: Jan 13, 1999:
824: replaced srand argument by (unsigned int) in run.c;
825: avoids problem on Mac and potentially on Unix & Windows.
826: thanks to Dan Allen.
827:
828: added a few (int) casts to silence useless compiler warnings.
829: e.g., errorflag= in run.c jump().
830:
831: added proctab.c to the bundle outout; one less thing
832: to have to compile out of the box.
833:
834: added calls to _popen and _pclose to the win95 stub for
835: pipes (thanks to Steve Adams for this helpful suggestion).
836: seems to work, though properties are not well understood
837: by me, and it appears that under some circumstances the
838: pipe output is truncated. Be careful.
839:
840: Oct 19, 1998:
841: fixed a couple of bugs in getrec: could fail to update $0
1.25 millert 842: after a getline var; because inputFS wasn't initialized,
1.7 millert 843: could split $0 on every character, a misleading diversion.
844:
845: fixed caching bug in makedfa: LRU was actually removing
846: least often used.
847:
848: thanks to ross ridge for finding these, and for providing
849: great bug reports.
850:
851: May 12, 1998:
852: fixed potential bug in readrec: might fail to update record
853: pointer after growing. thanks to dan levy for spotting this
854: and suggesting the fix.
855:
856: Mar 12, 1998:
857: added -V to print version number and die.
1.19 millert 858:
859: [notify dave kerns, dkerns@dacsoup.ih.lucent.com]
1.7 millert 860:
861: Feb 11, 1998:
862: subtle silent bug in lex.c: if the program ended with a number
863: longer than 1 digit, part of the input would be pushed back and
864: parsed again because token buffer wasn't terminated right.
865: example: awk 'length($0) > 10'. blush. at least i found it
866: myself.
867:
868: Aug 31, 1997:
869: s/adelete/awkdelete/: SGI uses this in malloc.h.
870: thanks to nelson beebe for pointing this one out.
871:
872: Aug 21, 1997:
873: fixed some bugs in sub and gsub when replacement includes \\.
874: this is a dark, horrible corner, but at least now i believe that
875: the behavior is the same as gawk and the intended posix standard.
876: thanks to arnold robbins for advice here.
877:
878: Aug 9, 1997:
879: somewhat regretfully, replaced the ancient lex-based lexical
880: analyzer with one written in C. it's longer, generates less code,
881: and more portable; the old one depended too much on mysterious
882: properties of lex that were not preserved in other environments.
883: in theory these recognize the same language.
884:
885: now using strtod to test whether a string is a number, instead of
886: the convoluted original function. should be more portable and
887: reliable if strtod is implemented right.
888:
889: removed now-pointless optimization in makefile that tries to avoid
890: recompilation when awkgram.y is changed but symbols are not.
891:
892: removed most fixed-size arrays, though a handful remain, some
893: of which are unchecked. you have been warned.
894:
895: Aug 4, 1997:
896: with some trepidation, replaced the ancient code that managed
897: fields and $0 in fixed-size arrays with arrays that grow on
898: demand. there is still some tension between trying to make this
899: run fast and making it clean; not sure it's right yet.
900:
901: the ill-conceived -mr and -mf arguments are now useful only
902: for debugging. previous dynamic string code removed.
903:
904: numerous other minor cleanups along the way.
1.1 tholo 905:
1.7 millert 906: Jul 30, 1997:
907: using code provided by dan levy (to whom profuse thanks), replaced
908: fixed-size arrays and awkward kludges by a fairly uniform mechanism
909: to grow arrays as needed for printf, sub, gsub, etc.
1.1 tholo 910:
1.7 millert 911: Jul 23, 1997:
912: falling off the end of a function returns "" and 0, not 0.
913: thanks to arnold robbins.
1.1 tholo 914:
1.7 millert 915: Jun 17, 1997:
916: replaced several fixed-size arrays by dynamically-created ones
917: in run.c; added overflow tests to some previously unchecked cases.
918: getline, toupper, tolower.
1.1 tholo 919:
1.7 millert 920: getline code is still broken in that recursive calls may wind
921: up using the same space. [fixed later]
1.1 tholo 922:
1.7 millert 923: increased RECSIZE to 8192 to push problems further over the horizon.
1.1 tholo 924:
1.7 millert 925: added \r to \n as input line separator for programs, not data.
926: damn CRLFs.
1.1 tholo 927:
1.7 millert 928: modified format() to permit explicit printf("%c", 0) to include
929: a null byte in output. thanks to ken stailey for the fix.
1.1 tholo 930:
1.7 millert 931: added a "-safe" argument that disables file output (print >,
932: print >>), process creation (cmd|getline, print |, system), and
933: access to the environment (ENVIRON). this is a first approximation
934: to a "safe" version of awk, but don't rely on it too much. thanks
935: to joan feigenbaum and matt blaze for the inspiration long ago.
1.1 tholo 936:
1.7 millert 937: Jul 8, 1996:
938: fixed long-standing bug in sub, gsub(/a/, "\\\\&"); thanks to
939: ralph corderoy.
1.1 tholo 940:
1.7 millert 941: Jun 29, 1996:
942: fixed awful bug in new field splitting; didn't get all the places
943: where input was done.
1.1 tholo 944:
1.7 millert 945: Jun 28, 1996:
946: changed field-splitting to conform to posix definition: fields are
947: split using the value of FS at the time of input; it used to be
948: the value when the field or NF was first referred to, a much less
949: predictable definition. thanks to arnold robbins for encouragement
950: to do the right thing.
1.1 tholo 951:
1.7 millert 952: May 28, 1996:
953: fixed appalling but apparently unimportant bug in parsing octal
954: numbers in reg exprs.
1.1 tholo 955:
1.7 millert 956: explicit hex in reg exprs now limited to 2 chars: \xa, \xaa.
1.1 tholo 957:
1.7 millert 958: May 27, 1996:
959: cleaned up some declarations so gcc -Wall is now almost silent.
1.1 tholo 960:
1.7 millert 961: makefile now includes backup copies of ytab.c and lexyy.c in case
962: one makes before looking; it also avoids recreating lexyy.c unless
963: really needed.
1.1 tholo 964:
1.7 millert 965: s/aprintf/awkprint, s/asprintf/awksprintf/ to avoid some name clashes
966: with unwisely-written header files.
1.1 tholo 967:
1.7 millert 968: thanks to jeffrey friedl for several of these.
1.1 tholo 969:
1.7 millert 970: May 26, 1996:
971: an attempt to rationalize the (unsigned) char issue. almost all
972: instances of unsigned char have been removed; the handful of places
973: in b.c where chars are used as table indices have been hand-crafted.
974: added some latin-1 tests to the regression, but i'm not confident;
975: none of my compilers seem to care much. thanks to nelson beebe for
976: pointing out some others that do care.
1.1 tholo 977:
1.7 millert 978: May 2, 1996:
979: removed all register declarations.
1.1 tholo 980:
1.7 millert 981: enhanced split(), as in gawk, etc: split(s, a, "") splits s into
982: a[1]...a[length(s)] with each character a single element.
1.1 tholo 983:
1.7 millert 984: made the same changes for field-splitting if FS is "".
1.1 tholo 985:
1.7 millert 986: added nextfile, as in gawk: causes immediate advance to next
987: input file. (thanks to arnold robbins for inspiration and code).
1.1 tholo 988:
1.7 millert 989: small fixes to regexpr code: can now handle []], [[], and
1.25 millert 990: variants; [] is now a syntax error, rather than matching
1.7 millert 991: everything; [z-a] is now empty, not z. far from complete
992: or correct, however. (thanks to jeffrey friedl for pointing out
993: some awful behaviors.)
1.1 tholo 994:
1.7 millert 995: Apr 29, 1996:
1.12 otto 996: replaced uchar by uschar everywhere; apparently some compilers
1.7 millert 997: usurp this name and this causes conflicts.
1.1 tholo 998:
1.7 millert 999: fixed call to time in run.c (bltin); arg is time_t *.
1.1 tholo 1000:
1.7 millert 1001: replaced horrible pointer/long punning in b.c by a legitimate
1002: union. should be safer on 64-bit machines and cleaner everywhere.
1003: (thanks to nelson beebe for pointing out some of these problems.)
1.1 tholo 1004:
1.7 millert 1005: replaced nested comments by #if 0...#endif in run.c, lib.c.
1.1 tholo 1006:
1.7 millert 1007: removed getsval, setsval, execute macros from run.c and lib.c.
1008: machines are 100x faster than they were when these macros were
1009: first used.
1.1 tholo 1010:
1.7 millert 1011: revised filenames: awk.g.y => awkgram.y, awk.lx.l => awklex.l,
1012: y.tab.[ch] => ytab.[ch], lex.yy.c => lexyy.c, all in the aid of
1013: portability to nameless systems.
1.1 tholo 1014:
1.7 millert 1015: "make bundle" now includes yacc and lex output files for recipients
1016: who don't have yacc or lex.
1.1 tholo 1017:
1.7 millert 1018: Aug 15, 1995:
1019: initialized Cells in setsymtab more carefully; some fields
1020: were not set. (thanks to purify, all of whose complaints i
1021: think i now understand.)
1.1 tholo 1022:
1.7 millert 1023: fixed at least one error in gsub that looked at -1-th element
1024: of an array when substituting for a null match (e.g., $).
1.1 tholo 1025:
1.7 millert 1026: delete arrayname is now legal; it clears the elements but leaves
1027: the array, which may not be the right behavior.
1.1 tholo 1028:
1.7 millert 1029: modified makefile: my current make can't cope with the test used
1030: to avoid unnecessary yacc invocations.
1.1 tholo 1031:
1.7 millert 1032: Jul 17, 1995:
1033: added dynamically growing strings to awk.lx.l and b.c
1034: to permit regular expressions to be much bigger.
1035: the state arrays can still overflow.
1.1 tholo 1036:
1.7 millert 1037: Aug 24, 1994:
1038: detect duplicate arguments in function definitions (mdm).
1.1 tholo 1039:
1.7 millert 1040: May 11, 1994:
1041: trivial fix to printf to limit string size in sub().
1.1 tholo 1042:
1.7 millert 1043: Apr 22, 1994:
1044: fixed yet another subtle self-assignment problem:
1045: $1 = $2; $1 = $1 clobbered $1.
1.1 tholo 1046:
1.7 millert 1047: Regression tests now use private echo, to avoid quoting problems.
1.1 tholo 1048:
1.7 millert 1049: Feb 2, 1994:
1050: changed error() to print line number as %d, not %g.
1.1 tholo 1051:
1.7 millert 1052: Jul 23, 1993:
1053: cosmetic changes: increased sizes of some arrays,
1054: reworded some error messages.
1.1 tholo 1055:
1.7 millert 1056: added CONVFMT as in posix (just replaced OFMT in getsval)
1.1 tholo 1057:
1.7 millert 1058: FILENAME is now "" until the first thing that causes a file
1059: to be opened.
1.1 tholo 1060:
1.7 millert 1061: Nov 28, 1992:
1062: deleted yyunput and yyoutput from proto.h;
1063: different versions of lex give these different declarations.
1.1 tholo 1064:
1.7 millert 1065: May 31, 1992:
1066: added -mr N and -mf N options: more record and fields.
1067: these really ought to adjust automatically.
1.1 tholo 1068:
1.7 millert 1069: cleaned up some error messages; "out of space" now means
1070: malloc returned NULL in all cases.
1.1 tholo 1071:
1.7 millert 1072: changed rehash so that if it runs out, it just returns;
1073: things will continue to run slow, but maybe a bit longer.
1.1 tholo 1074:
1.7 millert 1075: Apr 24, 1992:
1076: remove redundant close of stdin when using -f -.
1.1 tholo 1077:
1.7 millert 1078: got rid of core dump with -d; awk -d just prints date.
1.1 tholo 1079:
1.7 millert 1080: Apr 12, 1992:
1081: added explicit check for /dev/std(in,out,err) in redirection.
1082: unlike gawk, no /dev/fd/n yet.
1.1 tholo 1083:
1.7 millert 1084: added (file/pipe) builtin. hard to test satisfactorily.
1085: not posix.
1.1 tholo 1086:
1.7 millert 1087: Feb 20, 1992:
1088: recompile after abortive changes; should be unchanged.
1.1 tholo 1089:
1.7 millert 1090: Dec 2, 1991:
1091: die-casting time: converted to ansi C, installed that.
1.1 tholo 1092:
1.7 millert 1093: Nov 30, 1991:
1094: fixed storage leak in freefa, failing to recover [N]CCL.
1095: thanks to Bill Jones (jones@cs.usask.ca)
1.1 tholo 1096:
1.7 millert 1097: Nov 19, 1991:
1098: use RAND_MAX instead of literal in builtin().
1.1 tholo 1099:
1.7 millert 1100: Nov 12, 1991:
1101: cranked up some fixed-size arrays in b.c, and added a test for
1102: overflow in penter. thanks to mark larsen.
1.1 tholo 1103:
1.7 millert 1104: Sep 24, 1991:
1105: increased buffer in gsub. a very crude fix to a general problem.
1106: and again on Sep 26.
1.1 tholo 1107:
1.7 millert 1108: Aug 18, 1991:
1109: enforce variable name syntax for commandline variables: has to
1110: start with letter or _.
1.1 tholo 1111:
1.7 millert 1112: Jul 27, 1991:
1113: allow newline after ; in for statements.
1.1 tholo 1114:
1.7 millert 1115: Jul 21, 1991:
1116: fixed so that in self-assignment like $1=$1, side effects
1117: like recomputing $0 take place. (this is getting subtle.)
1.1 tholo 1118:
1.7 millert 1119: Jun 30, 1991:
1120: better test for detecting too-long output record.
1.1 tholo 1121:
1.7 millert 1122: Jun 2, 1991:
1123: better defense against very long printf strings.
1124: made break and continue illegal outside of loops.
1.1 tholo 1125:
1.7 millert 1126: May 13, 1991:
1127: removed extra arg on gettemp, tempfree. minor error message rewording.
1.1 tholo 1128:
1129: May 6, 1991:
1130: fixed silly bug in hex parsing in hexstr().
1131: removed an apparently unnecessary test in isnumber().
1132: warn about weird printf conversions.
1133: fixed unchecked array overwrite in relex().
1134:
1135: changed for (i in array) to access elements in sorted order.
1136: then unchanged it -- it really does run slower in too many cases.
1137: left the code in place, commented out.
1138:
1.7 millert 1139: Feb 10, 1991:
1140: check error status on all writes, to avoid banging on full disks.
1.1 tholo 1141:
1.7 millert 1142: Jan 28, 1991:
1143: awk -f - reads the program from stdin.
1.1 tholo 1144:
1.7 millert 1145: Jan 11, 1991:
1146: failed to set numeric state on $0 in cmd|getline context in run.c.
1.1 tholo 1147:
1.7 millert 1148: Nov 2, 1990:
1149: fixed sleazy test for integrality in getsval; use modf.
1.1 tholo 1150:
1.7 millert 1151: Oct 29, 1990:
1152: fixed sleazy buggy code in lib.c that looked (incorrectly) for
1153: too long input lines.
1.1 tholo 1154:
1.7 millert 1155: Oct 14, 1990:
1156: fixed the bug on p. 198 in which it couldn't deduce that an
1157: argument was an array in some contexts. replaced the error
1158: message in intest() by code that damn well makes it an array.
1.1 tholo 1159:
1.7 millert 1160: Oct 8, 1990:
1161: fixed horrible bug: types and values were not preserved in
1162: some kinds of self-assignment. (in assign().)
1.1 tholo 1163:
1.7 millert 1164: Aug 24, 1990:
1165: changed NCHARS to 256 to handle 8-bit characters in strings
1166: presented to match(), etc.
1.1 tholo 1167:
1.7 millert 1168: Jun 26, 1990:
1169: changed struct rrow (awk.h) to use long instead of int for lval,
1170: since cfoll() stores a pointer in it. now works better when int's
1171: are smaller than pointers!
1.1 tholo 1172:
1.7 millert 1173: May 6, 1990:
1174: AVA fixed the grammar so that ! is uniformly of the same precedence as
1175: unary + and -. This renders illegal some constructs like !x=y, which
1176: now has to be parenthesized as !(x=y), and makes others work properly:
1177: !x+y is (!x)+y, and x!y is x !y, not two pattern-action statements.
1178: (These problems were pointed out by Bob Lenk of Posix.)
1.1 tholo 1179:
1.7 millert 1180: Added \x to regular expressions (already in strings).
1181: Limited octal to octal digits; \8 and \9 are not octal.
1182: Centralized the code for parsing escapes in regular expressions.
1183: Added a bunch of tests to T.re and T.sub to verify some of this.
1.1 tholo 1184:
1.7 millert 1185: Feb 9, 1990:
1186: fixed null pointer dereference bug in main.c: -F[nothing]. sigh.
1.1 tholo 1187:
1.7 millert 1188: restored srand behavior: it returns the current seed.
1.1 tholo 1189:
1.7 millert 1190: Jan 18, 1990:
1191: srand now returns previous seed value (0 to start).
1.1 tholo 1192:
1.7 millert 1193: Jan 5, 1990:
1194: fix potential problem in tran.c -- something was freed,
1195: then used in freesymtab.
1.1 tholo 1196:
1.7 millert 1197: Oct 18, 1989:
1198: another try to get the max number of open files set with
1199: relatively machine-independent code.
1.1 tholo 1200:
1.7 millert 1201: small fix to input() in case of multiple reads after EOF.
1.1 tholo 1202:
1.7 millert 1203: Oct 11, 1989:
1204: FILENAME is now defined in the BEGIN block -- too many old
1205: programs broke.
1.1 tholo 1206:
1.7 millert 1207: "-" means stdin in getline as well as on the commandline.
1.1 tholo 1208:
1.7 millert 1209: added a bunch of casts to the code to tell the truth about
1210: char * vs. unsigned char *, a right royal pain. added a
1211: setlocale call to the front of main, though probably no one
1212: has it usefully implemented yet.
1.1 tholo 1213:
1.7 millert 1214: Aug 24, 1989:
1215: removed redundant relational tests against nullnode if parse
1216: tree already had a relational at that point.
1.1 tholo 1217:
1.7 millert 1218: Aug 11, 1989:
1219: fixed bug: commandline variable assignment has to look like
1220: var=something. (consider the man page for =, in file =.1)
1.1 tholo 1221:
1.7 millert 1222: changed number of arguments to functions to static arrays
1223: to avoid repeated malloc calls.
1.1 tholo 1224:
1.7 millert 1225: Aug 2, 1989:
1226: restored -F (space) separator
1.1 tholo 1227:
1.7 millert 1228: Jul 30, 1989:
1229: added -v x=1 y=2 ... for immediate commandline variable assignment;
1230: done before the BEGIN block for sure. they have to precede the
1231: program if the program is on the commandline.
1232: Modified Aug 2 to require a separate -v for each assignment.
1.1 tholo 1233:
1.7 millert 1234: Jul 10, 1989:
1235: fixed ref-thru-zero bug in environment code in tran.c
1.1 tholo 1236:
1.7 millert 1237: Jun 23, 1989:
1238: add newline to usage message.
1.1 tholo 1239:
1.7 millert 1240: Jun 14, 1989:
1241: added some missing ansi printf conversion letters: %i %X %E %G.
1242: no sensible meaning for h or L, so they may not do what one expects.
1.1 tholo 1243:
1.7 millert 1244: made %* conversions work.
1.1 tholo 1245:
1.7 millert 1246: changed x^y so that if n is a positive integer, it's done
1247: by explicit multiplication, thus achieving maximum accuracy.
1248: (this should be done by pow() but it seems not to be locally.)
1249: done to x ^= y as well.
1.1 tholo 1250:
1.7 millert 1251: Jun 4, 1989:
1252: ENVIRON array contains environment: if shell variable V=thing,
1253: ENVIRON["V"] is "thing"
1.1 tholo 1254:
1.7 millert 1255: multiple -f arguments permitted. error reporting is naive.
1256: (they were permitted before, but only the last was used.)
1.1 tholo 1257:
1.7 millert 1258: fixed a really stupid botch in the debugging macro dprintf
1.1 tholo 1259:
1.7 millert 1260: fixed order of evaluation of commandline assignments to match
1261: what the book claims: an argument of the form x=e is evaluated
1262: at the time it would have been opened if it were a filename (p 63).
1263: this invalidates the suggested answer to ex 4-1 (p 195).
1.1 tholo 1264:
1.7 millert 1265: removed some code that permitted -F (space) fieldseparator,
1266: since it didn't quite work right anyway. (restored aug 2)
1.1 tholo 1267:
1.7 millert 1268: Apr 27, 1989:
1269: Line number now accumulated correctly for comment lines.
1.1 tholo 1270:
1.7 millert 1271: Apr 26, 1989:
1272: Debugging output now includes a version date,
1273: if one compiles it into the source each time.
1.1 tholo 1274:
1.7 millert 1275: Apr 9, 1989:
1276: Changed grammar to prohibit constants as 3rd arg of sub and gsub;
1277: prevents class of overwriting-a-constant errors. (Last one?)
1278: This invalidates the "banana" example on page 43 of the book.
1.1 tholo 1279:
1.7 millert 1280: Added \a ("alert"), \v (vertical tab), \xhhh (hexadecimal),
1281: as in ANSI, for strings. Rescinded the sloppiness that permitted
1282: non-octal digits in \ooo. Warning: not all compilers and libraries
1283: will be able to deal with \x correctly.
1.1 tholo 1284:
1.7 millert 1285: Jan 9, 1989:
1286: Fixed bug that caused tempcell list to contain a duplicate.
1287: The fix is kludgy.
1.1 tholo 1288:
1.7 millert 1289: Dec 17, 1988:
1290: Catches some more commandline errors in main.
1291: Removed redundant decl of modf in run.c (confuses some compilers).
1292: Warning: there's no single declaration of malloc, etc., in awk.h
1293: that seems to satisfy all compilers.
1.1 tholo 1294:
1.7 millert 1295: Dec 7, 1988:
1296: Added a bit of code to error printing to avoid printing nulls.
1297: (Not clear that it actually would.)
1.1 tholo 1298:
1.7 millert 1299: Nov 27, 1988:
1300: With fear and trembling, modified the grammar to permit
1301: multiple pattern-action statements on one line without
1302: an explicit separator. By definition, this capitulation
1303: to the ghost of ancient implementations remains undefined
1304: and thus subject to change without notice or apology.
1305: DO NOT COUNT ON IT.
1.1 tholo 1306:
1.7 millert 1307: Oct 30, 1988:
1308: Fixed bug in call() that failed to recover storage.
1.1 tholo 1309:
1.7 millert 1310: A warning is now generated if there are more arguments
1311: in the call than in the definition (in lieu of fixing
1312: another storage leak).
1.2 millert 1313:
1.7 millert 1314: Oct 20, 1988:
1315: Fixed %c: if expr is numeric, use numeric value;
1316: otherwise print 1st char of string value. still
1317: doesn't work if the value is 0 -- won't print \0.
1.2 millert 1318:
1.7 millert 1319: Added a few more checks for running out of malloc.
1.2 millert 1320:
1.7 millert 1321: Oct 12, 1988:
1322: Fixed bug in call() that freed local arrays twice.
1.5 kstailey 1323:
1.7 millert 1324: Fixed to handle deletion of non-existent array right;
1325: complains about attempt to delete non-array element.
1.6 kstailey 1326:
1.7 millert 1327: Sep 30, 1988:
1328: Now guarantees to evaluate all arguments of built-in
1329: functions, as in C; the appearance is that arguments
1330: are evaluated before the function is called. Places
1331: affected are sub (gsub was ok), substr, printf, and
1332: all the built-in arithmetic functions in bltin().
1333: A warning is generated if a bltin() is called with
1334: the wrong number of arguments.
1.6 kstailey 1335:
1.7 millert 1336: This requires changing makeprof on p167 of the book.
1.6 kstailey 1337:
1.7 millert 1338: Aug 23, 1988:
1339: setting FILENAME in BEGIN caused core dump, apparently
1340: because it was freeing space not allocated by malloc.
1.6 kstailey 1341:
1.7 millert 1342: July 24, 1988:
1343: fixed egregious error in toupper/tolower functions.
1344: still subject to rescinding, however.
1.6 kstailey 1345:
1.7 millert 1346: July 2, 1988:
1347: flush stdout before opening file or pipe
1.6 kstailey 1348:
1.7 millert 1349: July 2, 1988:
1350: performance bug in b.c/cgoto(): not freeing some sets of states.
1351: partial fix only right now, and the number of states increased
1352: to make it less obvious.
1.6 kstailey 1353:
1.7 millert 1354: June 1, 1988:
1355: check error status on close
1.6 kstailey 1356:
1.7 millert 1357: May 28, 1988:
1358: srand returns seed value it's using.
1359: see 1/18/90
1.6 kstailey 1360:
1.7 millert 1361: May 22, 1988:
1362: Removed limit on depth of function calls.
1.6 kstailey 1363:
1.7 millert 1364: May 10, 1988:
1365: Fixed lib.c to permit _ in commandline variable names.
1.6 kstailey 1366:
1.7 millert 1367: Mar 25, 1988:
1368: main.c fixed to recognize -- as terminator of command-
1369: line options. Illegal options flagged.
1370: Error reporting slightly cleaned up.
1.6 kstailey 1371:
1.7 millert 1372: Dec 2, 1987:
1373: Newer C compilers apply a strict scope rule to extern
1374: declarations within functions. Two extern declarations in
1375: lib.c and tran.c have been moved to obviate this problem.
1.6 kstailey 1376:
1.7 millert 1377: Oct xx, 1987:
1378: Reluctantly added toupper and tolower functions.
1379: Subject to rescinding without notice.
1.6 kstailey 1380:
1.7 millert 1381: Sep 17, 1987:
1382: Error-message printer had printf(s) instead of
1383: printf("%s",s); got core dumps when the message
1384: included a %.
1.6 kstailey 1385:
1.7 millert 1386: Sep 12, 1987:
1387: Very long printf strings caused core dump;
1388: fixed aprintf, asprintf, format to catch them.
1389: Can still get a core dump in printf itself.
1.6 kstailey 1390:
1391: