Annotation of src/usr.bin/awk/FIXES, Revision 1.45
1.45 ! millert 1: /* $OpenBSD: FIXES,v 1.44 2022/06/03 19:40:56 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
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10: permission notice and warranty disclaimer appear in supporting
1.6 kstailey 11: documentation, and that the name Lucent Technologies or any of
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22: ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF
23: THIS SOFTWARE.
1.1 tholo 24: ****************************************************************/
25:
26: This file lists all bug fixes, changes, etc., made since the AWK book
27: was sent to the printers in August, 1987.
1.45 ! millert 28:
! 29: Mar 14, 2022:
! 30: The fulfillment of an assignment operand had been truncating its
! 31: entry in ARGV (since circa 1989). Thanks to Miguel Pineiro Jr.
! 32: <mpj@pineiro.cc>.
1.44 millert 33:
34: Mar 3, 2022:
35: Fixed file management memory leak that appears to have been
36: there since the files array was first initialized with stdin,
37: stdout, and stderr (circa 1992). Thanks to Miguel Pineiro Jr.
38: <mpj@pineiro.cc>.
1.43 millert 39:
40: December 8, 2021:
41: The error handling in closefile and closeall was mangled. Long
42: standing warnings had been made fatal and some fatal errors went
43: undetected. Thanks to Miguel Pineiro Jr. <mpj@pineiro.cc>.
1.42 millert 44:
45: Nov 03, 2021:
46: getline accesses uninitialized data after getrec()
47: returns 0 on EOF and leaves the contents of buf unchanged.
48: Thanks to Volodymyr Gubarkov, and Todd C Miller.
1.41 millert 49:
50: Oct 12, 2021:
51: The fix for #83 changed the code to insert 2 chars, but the
52: call to adjbuf just above it only allows for 1 char. This can
53: cause a heap buffer overflow.
54:
55: July 27, 2021:
56: As per IEEE Std 1003.1-2008, -F "str" is now consistent with
57: -v FS="str" when str is null. Thanks to Warner Losh.
58:
59: July 24, 2021:
60: Fix readrec's definition of a record. This fixes an issue
61: with NetBSD's RS regular expression support that can cause
62: an infinite read loop. Thanks to Miguel Pineiro Jr.
63:
64: Fix regular expression RS ^-anchoring. RS ^-anchoring needs to
65: know if it is reading the first record of a file. This change
66: restores a missing line that was overlooked when porting NetBSD's
67: RS regex functionality. Thanks to Miguel Pineiro Jr.
68:
69: Fix size computation in replace_repeat() for special case
70: REPEAT_WITH_Q. Thanks to Todd C. Miller.
71:
72: February 15, 2021:
73: Small fix so that awk will compile again with g++. Thanks to
74: Arnold Robbins.
75:
76: January 06, 2021:
77: Fix a decision bug with trailing stuff in lib.c:is_valid_number
78: after recent changes. Thanks to Ozan Yigit.
1.40 millert 79:
80: December 18, 2020:
81: Fix problems converting inf and NaN values in lib.c:is_valid_number.
82: Enhance number to string conversion to do the right thing for
83: NaN and inf values. Things are now pretty much the same as in
84: gawk. (Found a gawk bug while we're at it.) Added a torture
85: test for these values. Thanks to Arnold Robbins. Allows closing
86: of PR #101.
87:
88: December 15, 2020:
89: Merge PR #99, which gets the right header for strcasecmp.
90: Thanks to GitHub user michaelforney.
1.39 millert 91:
92: December 8, 2020:
93: Merge PR #98: Disallow hex data. Allow only +nan, -nan,
94: +inf, -inf (case independent) to give NaN and infinity values.
95: Improve things so that string to double conversion is only
96: done once, yielding something of a speedup. This obviate
97: PR #95. Thanks to Arnold Robbins.
98:
99: December 3, 2020:
100: Fix to argument parsing to avoid printing spurious newlines.
101: Thanks to Todd Miller. Merges PR #97.
102:
103: October 13, 2020:
104: Add casts before all the calls to malloc/calloc/realloc in order
105: to get it to compile with g++. Thanks to Arnold Robbins.
106:
107: August 16, 2020:
108: Additional fixes for DJGPP. Thanks to Eli Zaretskii for
109: the testing.
1.38 millert 110:
111: August 7, 2020:
112: Merge PR #93, which adds casts to (void*) for debug prints
113: using the %p format specifier. Thanks to GitHub user YongHaoWu
114: ("Chris") for the fixes.
115:
116: August 4, 2020:
117: In run.c, use non-restartable multibyte routines to attain
118: portability to DJGPP. Should fix Issue 92. Thanks to Albert Wik
119: for the report and to Todd Miller for the suggested fix.
1.37 millert 120:
121: July 30, 2020:
122: Merge PRs 88-91 which fix small bugs. Thanks to Todd Miller and
123: Tim van der Molen for the fixes.
124:
125: In order to make life easier, we move exclusively to bison
126: as the parser generator.
1.36 millert 127:
128: July 2, 2020:
129: Merge PRs 85 and 86 which fix regressions. Thanks to
130: Tim van der Molen for the fixes.
1.35 millert 131:
132: June 25, 2020:
133: Merge PRs 82 and 84. The latter fixes issue #83. Thanks to
134: Todd Miller and awkfan77.
1.34 millert 135:
136: June 12, 2020:
137: Clear errno before calling errcheck to avoid any spurious errors
138: left over from previous calls that may have set it. Thanks to
139: Todd Miller for the fix, from PR #80.
140:
141: Fix Issue #78 by allowing \r to follow floating point numbers in
142: lib.c:is_number. Thanks to GitHub user ajcarr for the report
143: and to Arnold Robbins for the fix.
1.33 millert 144:
145: June 5, 2020:
146: In fldbld(), make sure that inputFS is set before trying to
147: use it. Thanks to Steffen Nurpmeso <steffen@sdaoden.eu>
148: for the report.
149:
150: May 5, 2020:
151: Fix checks for compilers that can handle noreturn. Thanks to
152: GitHub user enh-google for pointing it out. Closes Issue #79.
153:
154: April 16, 2020:
155: Handle old compilers that don't support C11 (for noreturn).
156: Thanks to Arnold Robbins.
157:
158: April 5, 2020:
159: Use <stdnoreturn.h> and noreturn instead of GCC attributes.
160: Thanks to GitHub user awkfan77. Closes PR #77.
1.30 millert 161:
1.32 millert 162: February 28, 2020:
163: More cleanups from Christos Zoulas: notably backslash continuation
164: inside strings removes the newline and a fix for RS = "^a".
165: Fix for address sanitizer-found problem. Thanks to GitHub user
166: enh-google.
167:
168: February 19, 2020:
169: More small cleanups from Christos Zoulas.
170:
171: February 18, 2020:
172: Additional cleanups from Christos Zoulas. It's no longer necessary
173: to use the -y flag to bison.
174:
175: February 6, 2020:
176: Additional small cleanups from Christos Zoulas. awk is now
177: a little more robust about reporting I/O errors upon exit.
178:
1.31 millert 179: January 31, 2020:
180: Merge PR #70, which avoids use of variable length arrays. Thanks
181: to GitHub user michaelforney. Fix issue #60 ({0} in interval
1.32 millert 182: expressions doesn't work). Also get all tests working again.
183: Thanks to Arnold Robbins.
1.31 millert 184:
185: January 24, 2020:
186: A number of small cleanups from Christos Zoulas. Add the close
187: on exec flag to files/pipes opened for redirection; courtesy of
188: Arnold Robbins.
189:
190: January 19, 2020:
191: If POSIXLY_CORRECT is set in the environment, then sub and gsub
192: use POSIX rules for multiple backslashes. This fixes Issue #66,
193: while maintaining backwards compatibility.
194:
195: January 9, 2020:
196: Input/output errors on closing files are now fatal instead of
197: mere warnings. Thanks to Martijn Dekker <martijn@inlv.org>.
198:
1.30 millert 199: January 5, 2020:
200: Fix a bug in the concatentation of two string constants into
201: one done in the grammar. Fixes GitHub issue #61. Thanks
202: to GitHub user awkfan77 for pointing out the direction for
203: the fix. New test T.concat added to the test suite.
204: Fix a few memory leaks reported by valgrind, as well.
205:
206: December 27, 2019:
207: Fix a bug whereby a{0,3} could match four a's. Thanks to
208: "Anonymous AWK fan" for the report.
209:
210: December 11, 2019:
211: Further printf-related fixes for 32 bit systems.
212: Thanks again to Christos Zoulas.
213:
214: December 8, 2019:
215: Fix the return value of sprintf("%d") on 32 bit systems.
216: Thanks to Jim Lowe for the report and to Christos Zoulas
217: for the fix.
1.29 millert 218:
219: November 10, 2019:
220: Convert a number of Boolean integer variables into
221: actual bools. Convert compile_time variable into an
222: enum and simplify some of the related code. Thanks
223: to Arnold Robbins.
224:
225: November 8, 2019:
226: Fix from Ori Bernstein to get UTF-8 characters instead of
227: bytes when FS = "". This is currently the only bit of
228: the One True Awk that understands multibyte characters.
229: From Arnold Robbins, apply some cleanups in the test suite.
1.28 millert 230:
231: October 25, 2019:
232: More fixes and cleanups from NetBSD, courtesy of Christos
233: Zoulas. Merges PRs 54 and 55.
234:
235: October 24, 2019:
236: Import second round of code cleanups from NetBSD. Much thanks
1.31 millert 237: to Christos Zoulas (GitHub user zoulasc). Merges PR 53.
1.28 millert 238: Add an optimization for string concatenation, also from
239: Christos.
1.27 millert 240:
241: October 17, 2019:
242: Import code cleanups from NetBSD. Much thanks to Christos
1.31 millert 243: Zoulas (GitHub user zoulasc). Merges PR 51.
1.26 millert 244:
245: October 6, 2019:
246: Import code from NetBSD awk that implements RS as a regular
247: expression.
1.23 millert 248:
1.25 millert 249: September 10, 2019:
250: Fixes for various array / memory overruns found via gcc's
1.31 millert 251: -fsanitize=unknown. Thanks to Alexander Richardson (GitHub
1.25 millert 252: user arichardson). Merges PRs 47 and 48.
253:
254: July 28, 2019:
255: Import grammar optimization from NetBSD: Two string constants
256: concatenated together get turned into a single string.
257:
258: July 26, 2019:
259: Support POSIX-specified C-style escape sequences "\a" (alarm)
260: and "\v" (vertical tab) in command line arguments and regular
261: expressions, further to the support for them in strings added on
262: Apr 9, 1989. These now no longer match as literal "a" and "v"
263: characters (as they don't on other awk implementations).
264: Thanks to Martijn Dekker.
265:
266: July 17, 2019:
267: Pull in a number of code cleanups and minor fixes from
268: Warner Losh's bsd-ota branch. The only user visible change
269: is the use of random(3) as the random number generator.
270: Thanks to Warner Losh for collecting all these fixes in
271: one easy place to get them from.
272:
273: July 16, 2019:
274: Fix field splitting to use FS value as of the time a record
275: was read or assigned to. Thanks to GitHub user Cody Mello (melloc)
276: for the fix. (Merged from his branch, via PR #42.) Updated
277: testdir/T.split per said PR as well.
278:
279: June 24, 2019:
280: Extract awktest.tar into testdir directory. Add some very
281: simple mechanics to the makefile for running the tests and
282: for cleaning up. No changes to awk itself.
283:
1.24 millert 284: June 17, 2019:
285: Disallow deleting SYMTAB and its elements, which creates
286: use-after-free bugs. Thanks to GitHub user Cody Mello (melloc)
287: for the fix. (Merged from PR #43.)
288:
289: June 5, 2019:
290: Allow unmatched right parenthesis in a regular expression to
291: be treated literally. Fixes Issue #40. Thanks to GitHub user
292: Warner Losh (bsdimp) for the report. Thanks to Arnold Robbins
293: for the fix.
294:
295: May 29,2019:
296: Fix check for command line arguments to no longer require that
297: first character after '=' not be another '='. Reverts change of
298: August 11, 1989. Thanks to GitHub user Jamie Landeg Jones for
299: pointing out the issue; from Issue #38.
300:
301: Apr 7, 2019:
302: Update awktest.tar(p.50) to use modern options to sort. Needed
303: for Android development. Thanks to GitHub user mohd-akram (Mohamed
304: Akram). From Issue #33.
305:
306: Mar 12, 2019:
307: Added very simplistic support for cross-compiling in the
308: makefile. We are NOT going to go in the direction of the
309: autotools, though. Thanks to GitHub user nee-san for
310: the basic change. (Merged from PR #34.)
311:
1.23 millert 312: Mar 5, 2019:
313: Added support for POSIX-standard interval expressions (a.k.a.
314: bounds, a.k.a. repetition expressions) in regular expressions,
315: backported (via NetBSD) from Apple awk-24 (20070501).
316: Thanks to Martijn Dekker <martijn@inlv.org> for the port.
317: (Merged from PR #30.)
318:
319: Mar 3, 2019:
320: Merge PRs as follows:
321: #12: Avoid undefined behaviour when using ctype(3) functions in
322: relex(). Thanks to GitHub user iamleot.
323: #31: Make getline handle numeric strings, and update FIXES. Thanks
1.24 millert 324: to GitHub user arnoldrobbins.
1.23 millert 325: #32: maketab: support build systems with read-only source. Thanks
326: to GitHub user enh.
1.22 millert 327:
328: Jan 25, 2019:
329: Make getline handle numeric strings properly in all cases.
330: (Thanks, Arnold.)
331:
332: Jan 21, 2019:
333: Merged a number of small fixes from GitHub pull requests.
334: Thanks to GitHub users Arnold Robbins (arnoldrobbins),
335: Cody Mello (melloc) and Christoph Junghans (junghans).
336: PR numbers: 13-21, 23, 24, 27.
1.21 millert 337:
338: Oct 25, 2018:
339: Added test in maketab.c to prevent generating a proctab entry
340: for YYSTYPE_IS_DEFINED. It was harmless but some gcc settings
341: generated a warning message. Thanks to Nan Xiao for report.
1.20 millert 342:
343: Aug 27, 2018:
344: Disallow '$' in printf formats; arguments evaluated in order
345: and printed in order.
346:
347: Added some casts to silence warnings on debugging printfs.
348: (Thanks, Arnold.)
1.18 millert 349:
1.19 millert 350: Aug 23, 2018:
351: A long list of fixes courtesy of Arnold Robbins,
352: to whom profound thanks.
353:
354: 1. ofs-rebuild: OFS value used to rebuild the record was incorrect.
355: Fixed August 19, 2014. Revised fix August 2018.
356:
357: 2. system-status: Instead of a floating-point division by 256, use
358: the wait(2) macros to create a reasonable exit status.
359: Fixed March 12, 2016.
360:
361: 3. space: Use provided xisblank() function instead of ispace() for
362: matching [[:blank:]].
363:
364: 4. a-format: Add POSIX standard %a and %A to supported formats. Check
365: at runtime that this format is available.
366:
367: 5. decr-NF: Decrementing NF did not change $0. This is a decades-old
368: bug. There are interactions with the old and new value of OFS as well.
369: Most of the fix came from the NetBSD awk.
370:
371: 6. string-conv: String conversions of scalars were sticky. Once a
372: conversion to string happened, even with OFMT, that value was used until
373: a new numeric value was assigned, even if OFMT differed from CONVFMT,
374: and also if CONVFMT changed.
375:
376: 7. unary-plus: Unary plus on a string constant returned the string.
377: Instead, it should convert the value to numeric and give that value.
378:
379: Also added Arnold's tests for these to awktest.tar as T.arnold.
380:
381: Aug 15, 2018:
382: fixed mangled awktest.tar (thanks, Arnold), posted all
383: current (very minor) fixes to github / onetrueawk
384:
1.18 millert 385: Jun 7, 2018:
386: (yes, a long layoff)
387: Updated some broken tests (beebe.tar, T.lilly)
388: [thanks to Arnold Robbins]
389:
390: Mar 26, 2015:
391: buffer overflow in error reporting; thanks to tobias ulmer
392: and john-mark gurney for spotting it and the fix.
393:
394: Feb 4, 2013:
395: cleaned up a handful of tests that didn't seem to actually
396: test for correct behavior: T.latin1, T.gawk.
397:
398: Jan 5, 2013:
399: added ,NULL initializer to static Cells in run.c; not really
400: needed but cleaner. Thanks to Michael Bombardieri.
1.17 millert 401:
402: Dec 20, 2012:
403: fiddled makefile to get correct yacc and bison flags. pick yacc
404: (linux) or bison (mac) as necessary.
405:
406: added __attribute__((__noreturn__)) to a couple of lines in
407: proto.h, to silence someone's enthusiastic checker.
408:
409: fixed obscure call by value bug in split(a[1],a) reported on
410: 9fans. the management of temporary values is just a mess; i
411: took a shortcut by making an extra string copy. thanks
412: to paul patience and arnold robbins for passing it on and for
413: proposed patches.
414:
415: tiny fiddle in setfval to eliminate -0 results in T.expr, which
416: has irritated me for 20+ years.
1.16 millert 417:
418: Aug 10, 2011:
419: another fix to avoid core dump with delete(ARGV); again, many thanks
420: to ruslan ermilov.
421:
422: Aug 7, 2011:
423: split(s, a, //) now behaves the same as split(s, a, "")
424:
425: Jun 12, 2011:
426: /pat/, \n /pat/ {...} is now legal, though bad style to use.
427:
428: added checks to new -v code that permits -vnospace; thanks to
1.25 millert 429: ruslan ermilov for spotting this and providing the patch.
1.16 millert 430:
431: removed fixed limit on number of open files; thanks to aleksey
1.25 millert 432: cheusov and christos zoulos.
1.16 millert 433:
434: fixed day 1 bug that resurrected deleted elements of ARGV when
435: used as filenames (in lib.c).
436:
437: minor type fiddles to make gcc -Wall -pedantic happier (but not
438: totally so); turned on -fno-strict-aliasing in makefile.
439:
440: May 6, 2011:
441: added #ifdef for isblank.
442: now allows -ffoo as well as -f foo arguments.
443: (thanks, ruslan)
444:
445: May 1, 2011:
446: after advice from todd miller, kevin lo, ruslan ermilov,
447: and arnold robbins, changed srand() to return the previous
448: seed (which is 1 on the first call of srand). the seed is
449: an Awkfloat internally though converted to unsigned int to
1.25 millert 450: pass to the library srand(). thanks, everyone.
1.16 millert 451:
452: fixed a subtle (and i hope low-probability) overflow error
1.25 millert 453: in fldbld, by adding space for one extra \0. thanks to
1.16 millert 454: robert bassett for spotting this one and providing a fix.
455:
456: removed the files related to compilation on windows. i no
457: longer have anything like a current windows environment, so
458: i can't test any of it.
1.15 millert 459:
460: May 23, 2010:
461: fixed long-standing overflow bug in run.c; many thanks to
462: nelson beebe for spotting it and providing the fix.
463:
464: fixed bug that didn't parse -vd=1 properly; thanks to santiago
465: vila for spotting it.
466:
467: Feb 8, 2010:
468: i give up. replaced isblank with isspace in b.c; there are
469: no consistent header files.
470:
471: Nov 26, 2009:
472: fixed a long-standing issue with when FS takes effect. a
473: change to FS is now noticed immediately for subsequent splits.
474:
475: changed the name getline() to awkgetline() to avoid yet another
476: name conflict somewhere.
477:
478: Feb 11, 2009:
479: temporarily for now defined HAS_ISBLANK, since that seems to
480: be the best way through the thicket. isblank arrived in C99,
481: but seems to be arriving at different systems at different
482: times.
483:
484: Oct 8, 2008:
485: fixed typo in b.c that set tmpvec wrongly. no one had ever
486: run into the problem, apparently. thanks to alistair crooks.
1.14 millert 487:
488: Oct 23, 2007:
489: minor fix in lib.c: increase inputFS to 100, change malloc
1.25 millert 490: for fields to n+1.
1.14 millert 491:
492: fixed memory fault caused by out of order test in setsval.
493:
494: thanks to david o'brien, freebsd, for both fixes.
495:
496: May 1, 2007:
497: fiddle in makefile to fix for BSD make; thanks to igor sobrado.
498:
499: Mar 31, 2007:
500: fixed some null pointer refs calling adjbuf.
501:
502: Feb 21, 2007:
503: fixed a bug in matching the null RE in sub and gsub. thanks to al aho
504: who actually did the fix (in b.c), and to wolfgang seeberg for finding
505: it and providing a very compact test case.
506:
507: fixed quotation in b.c; thanks to Hal Pratt and the Princeton Dante
508: Project.
509:
510: removed some no-effect asserts in run.c.
511:
512: fiddled maketab.c to not complain about bison-generated values.
513:
514: removed the obsolete -V argument; fixed --version to print the
515: version and exit.
516:
517: fixed wording and an outright error in the usage message; thanks to igor
518: sobrado and jason mcintyre.
519:
520: fixed a bug in -d that caused core dump if no program followed.
521:
522: Jan 1, 2007:
523: dropped mac.code from makefile; there are few non-MacOSX
524: mac's these days.
525:
526: Jan 17, 2006:
527: system() not flagged as unsafe in the unadvertised -safe option.
528: found it while enhancing tests before shipping the ;login: article.
529: practice what you preach.
530:
531: removed the 9-years-obsolete -mr and -mf flags.
532:
533: added -version and --version options.
534:
535: core dump on linux with BEGIN {nextfile}, now fixed.
536:
1.25 millert 537: removed some #ifdef's in run.c and lex.c that appear to no
1.14 millert 538: longer be necessary.
539:
540: Apr 24, 2005:
541: modified lib.c so that values of $0 et al are preserved in the END
542: block, apparently as required by posix. thanks to havard eidnes
543: for the report and code.
544:
545: Jan 14, 2005:
546: fixed infinite loop in parsing, originally found by brian tsang.
547: thanks to arnold robbins for a suggestion that started me
548: rethinking it.
549:
550: Dec 31, 2004:
1.25 millert 551: prevent overflow of -f array in main, head off potential error in
552: call of SYNTAX(), test malloc return in lib.c, all with thanks to
1.14 millert 553: todd miller.
1.13 millert 554:
555: Dec 22, 2004:
556: cranked up size of NCHARS; coverity thinks it can be overrun with
557: smaller size, and i think that's right. added some assertions to b.c
558: to catch places where it might overrun. the RE code is still fragile.
559:
560: Dec 5, 2004:
561: fixed a couple of overflow problems with ridiculous field numbers:
562: e.g., print $(2^32-1). thanks to ruslan ermilov, giorgos keramidas
563: and david o'brien at freebsd.org for patches. this really should
564: be re-done from scratch.
565:
566: Nov 21, 2004:
567: fixed another 25-year-old RE bug, in split. it's another failure
568: to (re-)initialize. thanks to steve fisher for spotting this and
569: providing a good test case.
570:
571: Nov 22, 2003:
572: fixed a bug in regular expressions that dates (so help me) from 1977;
573: it's been there from the beginning. an anchored longest match that
574: was longer than the number of states triggered a failure to initialize
575: the machine properly. many thanks to moinak ghosh for not only finding
576: this one but for providing a fix, in some of the most mysterious
577: code known to man.
578:
579: fixed a storage leak in call() that appears to have been there since
1.25 millert 580: 1983 or so -- a function without an explicit return that assigns a
581: string to a parameter leaked a Cell. thanks to moinak ghosh for
1.13 millert 582: spotting this very subtle one.
583:
584: Jul 31, 2003:
585: fixed, thanks to andrey chernov and ruslan ermilov, a bug in lex.c
586: that mis-handled the character 255 in input. (it was being compared
587: to EOF with a signed comparison.)
588:
589: Jul 29, 2003:
590: fixed (i think) the long-standing botch that included the beginning of
591: line state ^ for RE's in the set of valid characters; this led to a
592: variety of odd problems, including failure to properly match certain
593: regular expressions in non-US locales. thanks to ruslan for keeping
594: at this one.
595:
596: Jul 28, 2003:
597: n-th try at getting internationalization right, with thanks to volker
598: kiefel, arnold robbins and ruslan ermilov for advice, though they
599: should not be blamed for the outcome. according to posix, "." is the
600: radix character in programs and command line arguments regardless of
601: the locale; otherwise, the locale should prevail for input and output
602: of numbers. so it's intended to work that way.
1.25 millert 603:
1.13 millert 604: i have rescinded the attempt to use strcoll in expanding shorthands in
605: regular expressions (cclenter). its properties are much too
606: surprising; for example [a-c] matches aAbBc in locale en_US but abBcC
607: in locale fr_CA. i can see how this might arise by implementation
608: but i cannot explain it to a human user. (this behavior can be seen
609: in gawk as well; we're leaning on the same library.)
610:
611: the issue appears to be that strcoll is meant for sorting, where
612: merging upper and lower case may make sense (though note that unix
613: sort does not do this by default either). it is not appropriate
614: for regular expressions, where the goal is to match specific
615: patterns of characters. in any case, the notations [:lower:], etc.,
616: are available in awk, and they are more likely to work correctly in
617: most locales.
618:
619: a moratorium is hereby declared on internationalization changes.
620: i apologize to friends and colleagues in other parts of the world.
621: i would truly like to get this "right", but i don't know what
622: that is, and i do not want to keep making changes until it's clear.
623:
624: Jul 4, 2003:
625: fixed bug that permitted non-terminated RE, as in "awk /x".
626:
627: Jun 1, 2003:
628: subtle change to split: if source is empty, number of elems
629: is always 0 and the array is not set.
630:
631: Mar 21, 2003:
632: added some parens to isblank, in another attempt to make things
633: internationally portable.
634:
635: Mar 14, 2003:
636: the internationalization changes, somewhat modified, are now
637: reinstated. in theory awk will now do character comparisons
638: and case conversions in national language, but "." will always
639: be the decimal point separator on input and output regardless
640: of national language. isblank(){} has an #ifndef.
641:
642: this no longer compiles on windows: LC_MESSAGES isn't defined
643: in vc6++.
644:
645: fixed subtle behavior in field and record splitting: if FS is
646: a single character and RS is not empty, \n is NOT a separator.
647: this tortuous reading is found in the awk book; behavior now
648: matches gawk and mawk.
1.11 millert 649:
650: Dec 13, 2002:
651: for the moment, the internationalization changes of nov 29 are
652: rolled back -- programs like x = 1.2 don't work in some locales,
653: because the parser is expecting x = 1,2. until i understand this
654: better, this will have to wait.
655:
656: Nov 29, 2002:
657: modified b.c (with tiny changes in main and run) to support
658: locales, using strcoll and iswhatever tests for posix character
659: classes. thanks to ruslan ermilov (ru@freebsd.org) for code.
660: the function isblank doesn't seem to have propagated to any
661: header file near me, so it's there explicitly. not properly
662: tested on non-ascii character sets by me.
663:
664: Jun 28, 2002:
665: modified run/format() and tran/getsval() to do a slightly better
666: job on using OFMT for output from print and CONVFMT for other
1.25 millert 667: number->string conversions, as promised by posix and done by
1.11 millert 668: gawk and mawk. there are still places where it doesn't work
669: right if CONVFMT is changed; by then the STR attribute of the
670: variable has been irrevocably set. thanks to arnold robbins for
671: code and examples.
672:
673: fixed subtle bug in format that could get core dump. thanks to
674: Jaromir Dolecek <jdolecek@NetBSD.org> for finding and fixing.
675: minor cleanup in run.c / format() at the same time.
676:
677: added some tests for null pointers to debugging printf's, which
678: were never intended for external consumption. thanks to dave
679: kerns (dkerns@lucent.com) for pointing this out.
680:
681: GNU compatibility: an empty regexp matches anything (thanks to
682: dag-erling smorgrav, des@ofug.org). subject to reversion if
683: this does more harm than good.
684:
685: pervasive small changes to make things more const-correct, as
686: reported by gcc's -Wwrite-strings. as it says in the gcc manual,
687: this may be more nuisance than useful. provoked by a suggestion
688: and code from arnaud desitter, arnaud@nimbus.geog.ox.ac.uk
689:
690: minor documentation changes to note that this now compiles out
691: of the box on Mac OS X.
692:
693: Feb 10, 2002:
694: changed types in posix chars structure to quiet solaris cc.
695:
696: Jan 1, 2002:
697: fflush() or fflush("") flushes all files and pipes.
698:
1.25 millert 699: length(arrayname) returns number of elements; thanks to
1.11 millert 700: arnold robbins for suggestion.
701:
702: added a makefile.win to make it easier to build on windows.
703: based on dan allen's buildwin.bat.
704:
705: Nov 16, 2001:
706: added support for posix character class names like [:digit:],
707: which are not exactly shorter than [0-9] and perhaps no more
708: portable. thanks to dag-erling smorgrav for code.
709:
710: Feb 16, 2001:
711: removed -m option; no longer needed, and it was actually
712: broken (noted thanks to volker kiefel).
713:
714: Feb 10, 2001:
715: fixed an appalling bug in gettok: any sequence of digits, +,-, E, e,
716: and period was accepted as a valid number if it started with a period.
717: this would never have happened with the lex version.
718:
719: other 1-character botches, now fixed, include a bare $ and a
720: bare " at the end of the input.
721:
722: Feb 7, 2001:
723: more (const char *) casts in b.c and tran.c to silence warnings.
1.8 millert 724:
1.10 millert 725: Nov 15, 2000:
726: fixed a bug introduced in august 1997 that caused expressions
727: like $f[1] to be syntax errors. thanks to arnold robbins for
728: noticing this and providing a fix.
729:
730: Oct 30, 2000:
731: fixed some nextfile bugs: not handling all cases. thanks to
732: arnold robbins for pointing this out. new regressions added.
733:
734: close() is now a function. it returns whatever the library
735: fclose returns, and -1 for closing a file or pipe that wasn't
736: opened.
737:
738: Sep 24, 2000:
739: permit \n explicitly in character classes; won't work right
740: if comes in as "[\n]" but ok as /[\n]/, because of multiple
741: processing of \'s. thanks to arnold robbins.
742:
743: July 5, 2000:
744: minor fiddles in tran.c to keep compilers happy about uschar.
745: thanks to norman wilson.
746:
747: May 25, 2000:
748: yet another attempt at making 8-bit input work, with another
1.25 millert 749: band-aid in b.c (member()), and some (uschar) casts to head
1.10 millert 750: off potential errors in subscripts (like isdigit). also
751: changed HAT to NCHARS-2. thanks again to santiago vila.
752:
753: changed maketab.c to ignore apparently out of range definitions
754: instead of halting; new freeBSD generates one. thanks to
755: jon snader <jsnader@ix.netcom.com> for pointing out the problem.
756:
757: May 2, 2000:
758: fixed an 8-bit problem in b.c by making several char*'s into
759: unsigned char*'s. not clear i have them all yet. thanks to
760: Santiago Vila <sanvila@unex.es> for the bug report.
761:
762: Apr 21, 2000:
763: finally found and fixed a memory leak in function call; it's
764: been there since functions were added ~1983. thanks to
765: jon bentley for the test case that found it.
766:
767: added test in envinit to catch environment "variables" with
1.12 otto 768: names beginning with '='; thanks to Berend Hasselman.
1.10 millert 769:
770: Jul 28, 1999:
771: added test in defn() to catch function foo(foo), which
772: otherwise recurses until core dump. thanks to arnold
773: robbins for noticing this.
774:
1.9 millert 775: Jun 20, 1999:
776: added *bp in gettok in lex.c; appears possible to exit function
777: without terminating the string. thanks to russ cox.
778:
779: Jun 2, 1999:
780: added function stdinit() to run to initialize files[] array,
781: in case stdin, etc., are not constants; some compilers care.
782:
783: May 10, 1999:
784: replaced the ERROR ... FATAL, etc., macros with functions
785: based on vprintf, to avoid problems caused by overrunning
786: fixed-size errbuf array. thanks to ralph corderoy for the
787: impetus, and for pointing out a string termination bug in
788: qstring as well.
789:
790: Apr 21, 1999:
791: fixed bug that caused occasional core dumps with commandline
792: variable with value ending in \. (thanks to nelson beebe for
793: the test case.)
794:
1.8 millert 795: Apr 16, 1999:
1.25 millert 796: with code kindly provided by Bruce Lilly, awk now parses
1.8 millert 797: /=/ and similar constructs more sensibly in more places.
1.10 millert 798: Bruce also provided some helpful test cases.
1.8 millert 799:
800: Apr 5, 1999:
801: changed true/false to True/False in run.c to make it
802: easier to compile with C++. Added some casts on malloc
803: and realloc to be honest about casts; ditto. changed
804: ltype int to long in struct rrow to reduce some 64-bit
805: complaints; other changes scattered throughout for the
806: same purpose. thanks to Nelson Beebe for these portability
807: improvements.
808:
809: removed some horrible pointer-int casting in b.c and elsewhere
810: by adding ptoi and itonp to localize the casts, which are
811: all benign. fixed one incipient bug that showed up on sgi
812: in 64-bit mode.
813:
814: reset lineno for new source file; include filename in error
815: message. also fixed line number error in continuation lines.
816: (thanks to Nelson Beebe for both of these.)
817:
818: Mar 24, 1999:
819: Nelson Beebe notes that irix 5.3 yacc dies with a bogus
820: error; use a newer version or switch to bison, since sgi
821: is unlikely to fix it.
1.1 tholo 822:
1.7 millert 823: Mar 5, 1999:
1.9 millert 824: changed isnumber to is_number to avoid the problem caused by
825: versions of ctype.h that include the name isnumber.
1.7 millert 826:
827: distribution now includes a script for building on a Mac,
828: thanks to Dan Allen.
829:
830: Feb 20, 1999:
831: fixed memory leaks in run.c (call) and tran.c (setfval).
832: thanks to Stephen Nutt for finding these and providing the fixes.
833:
834: Jan 13, 1999:
835: replaced srand argument by (unsigned int) in run.c;
836: avoids problem on Mac and potentially on Unix & Windows.
837: thanks to Dan Allen.
838:
839: added a few (int) casts to silence useless compiler warnings.
840: e.g., errorflag= in run.c jump().
841:
842: added proctab.c to the bundle outout; one less thing
843: to have to compile out of the box.
844:
845: added calls to _popen and _pclose to the win95 stub for
846: pipes (thanks to Steve Adams for this helpful suggestion).
847: seems to work, though properties are not well understood
848: by me, and it appears that under some circumstances the
849: pipe output is truncated. Be careful.
850:
851: Oct 19, 1998:
852: fixed a couple of bugs in getrec: could fail to update $0
1.25 millert 853: after a getline var; because inputFS wasn't initialized,
1.7 millert 854: could split $0 on every character, a misleading diversion.
855:
856: fixed caching bug in makedfa: LRU was actually removing
857: least often used.
858:
859: thanks to ross ridge for finding these, and for providing
860: great bug reports.
861:
862: May 12, 1998:
863: fixed potential bug in readrec: might fail to update record
864: pointer after growing. thanks to dan levy for spotting this
865: and suggesting the fix.
866:
867: Mar 12, 1998:
868: added -V to print version number and die.
1.19 millert 869:
870: [notify dave kerns, dkerns@dacsoup.ih.lucent.com]
1.7 millert 871:
872: Feb 11, 1998:
873: subtle silent bug in lex.c: if the program ended with a number
874: longer than 1 digit, part of the input would be pushed back and
875: parsed again because token buffer wasn't terminated right.
876: example: awk 'length($0) > 10'. blush. at least i found it
877: myself.
878:
879: Aug 31, 1997:
880: s/adelete/awkdelete/: SGI uses this in malloc.h.
881: thanks to nelson beebe for pointing this one out.
882:
883: Aug 21, 1997:
884: fixed some bugs in sub and gsub when replacement includes \\.
885: this is a dark, horrible corner, but at least now i believe that
886: the behavior is the same as gawk and the intended posix standard.
887: thanks to arnold robbins for advice here.
888:
889: Aug 9, 1997:
890: somewhat regretfully, replaced the ancient lex-based lexical
891: analyzer with one written in C. it's longer, generates less code,
892: and more portable; the old one depended too much on mysterious
893: properties of lex that were not preserved in other environments.
894: in theory these recognize the same language.
895:
896: now using strtod to test whether a string is a number, instead of
897: the convoluted original function. should be more portable and
898: reliable if strtod is implemented right.
899:
900: removed now-pointless optimization in makefile that tries to avoid
901: recompilation when awkgram.y is changed but symbols are not.
902:
903: removed most fixed-size arrays, though a handful remain, some
904: of which are unchecked. you have been warned.
905:
906: Aug 4, 1997:
907: with some trepidation, replaced the ancient code that managed
908: fields and $0 in fixed-size arrays with arrays that grow on
909: demand. there is still some tension between trying to make this
910: run fast and making it clean; not sure it's right yet.
911:
912: the ill-conceived -mr and -mf arguments are now useful only
913: for debugging. previous dynamic string code removed.
914:
915: numerous other minor cleanups along the way.
1.1 tholo 916:
1.7 millert 917: Jul 30, 1997:
918: using code provided by dan levy (to whom profuse thanks), replaced
919: fixed-size arrays and awkward kludges by a fairly uniform mechanism
920: to grow arrays as needed for printf, sub, gsub, etc.
1.1 tholo 921:
1.7 millert 922: Jul 23, 1997:
923: falling off the end of a function returns "" and 0, not 0.
924: thanks to arnold robbins.
1.1 tholo 925:
1.7 millert 926: Jun 17, 1997:
927: replaced several fixed-size arrays by dynamically-created ones
928: in run.c; added overflow tests to some previously unchecked cases.
929: getline, toupper, tolower.
1.1 tholo 930:
1.7 millert 931: getline code is still broken in that recursive calls may wind
932: up using the same space. [fixed later]
1.1 tholo 933:
1.7 millert 934: increased RECSIZE to 8192 to push problems further over the horizon.
1.1 tholo 935:
1.7 millert 936: added \r to \n as input line separator for programs, not data.
937: damn CRLFs.
1.1 tholo 938:
1.7 millert 939: modified format() to permit explicit printf("%c", 0) to include
940: a null byte in output. thanks to ken stailey for the fix.
1.1 tholo 941:
1.7 millert 942: added a "-safe" argument that disables file output (print >,
943: print >>), process creation (cmd|getline, print |, system), and
944: access to the environment (ENVIRON). this is a first approximation
945: to a "safe" version of awk, but don't rely on it too much. thanks
946: to joan feigenbaum and matt blaze for the inspiration long ago.
1.1 tholo 947:
1.7 millert 948: Jul 8, 1996:
949: fixed long-standing bug in sub, gsub(/a/, "\\\\&"); thanks to
950: ralph corderoy.
1.1 tholo 951:
1.7 millert 952: Jun 29, 1996:
953: fixed awful bug in new field splitting; didn't get all the places
954: where input was done.
1.1 tholo 955:
1.7 millert 956: Jun 28, 1996:
957: changed field-splitting to conform to posix definition: fields are
958: split using the value of FS at the time of input; it used to be
959: the value when the field or NF was first referred to, a much less
960: predictable definition. thanks to arnold robbins for encouragement
961: to do the right thing.
1.1 tholo 962:
1.7 millert 963: May 28, 1996:
964: fixed appalling but apparently unimportant bug in parsing octal
965: numbers in reg exprs.
1.1 tholo 966:
1.7 millert 967: explicit hex in reg exprs now limited to 2 chars: \xa, \xaa.
1.1 tholo 968:
1.7 millert 969: May 27, 1996:
970: cleaned up some declarations so gcc -Wall is now almost silent.
1.1 tholo 971:
1.7 millert 972: makefile now includes backup copies of ytab.c and lexyy.c in case
973: one makes before looking; it also avoids recreating lexyy.c unless
974: really needed.
1.1 tholo 975:
1.7 millert 976: s/aprintf/awkprint, s/asprintf/awksprintf/ to avoid some name clashes
977: with unwisely-written header files.
1.1 tholo 978:
1.7 millert 979: thanks to jeffrey friedl for several of these.
1.1 tholo 980:
1.7 millert 981: May 26, 1996:
982: an attempt to rationalize the (unsigned) char issue. almost all
983: instances of unsigned char have been removed; the handful of places
984: in b.c where chars are used as table indices have been hand-crafted.
985: added some latin-1 tests to the regression, but i'm not confident;
986: none of my compilers seem to care much. thanks to nelson beebe for
987: pointing out some others that do care.
1.1 tholo 988:
1.7 millert 989: May 2, 1996:
990: removed all register declarations.
1.1 tholo 991:
1.7 millert 992: enhanced split(), as in gawk, etc: split(s, a, "") splits s into
993: a[1]...a[length(s)] with each character a single element.
1.1 tholo 994:
1.7 millert 995: made the same changes for field-splitting if FS is "".
1.1 tholo 996:
1.7 millert 997: added nextfile, as in gawk: causes immediate advance to next
998: input file. (thanks to arnold robbins for inspiration and code).
1.1 tholo 999:
1.7 millert 1000: small fixes to regexpr code: can now handle []], [[], and
1.25 millert 1001: variants; [] is now a syntax error, rather than matching
1.7 millert 1002: everything; [z-a] is now empty, not z. far from complete
1003: or correct, however. (thanks to jeffrey friedl for pointing out
1004: some awful behaviors.)
1.1 tholo 1005:
1.7 millert 1006: Apr 29, 1996:
1.12 otto 1007: replaced uchar by uschar everywhere; apparently some compilers
1.7 millert 1008: usurp this name and this causes conflicts.
1.1 tholo 1009:
1.7 millert 1010: fixed call to time in run.c (bltin); arg is time_t *.
1.1 tholo 1011:
1.7 millert 1012: replaced horrible pointer/long punning in b.c by a legitimate
1013: union. should be safer on 64-bit machines and cleaner everywhere.
1014: (thanks to nelson beebe for pointing out some of these problems.)
1.1 tholo 1015:
1.7 millert 1016: replaced nested comments by #if 0...#endif in run.c, lib.c.
1.1 tholo 1017:
1.7 millert 1018: removed getsval, setsval, execute macros from run.c and lib.c.
1019: machines are 100x faster than they were when these macros were
1020: first used.
1.1 tholo 1021:
1.7 millert 1022: revised filenames: awk.g.y => awkgram.y, awk.lx.l => awklex.l,
1023: y.tab.[ch] => ytab.[ch], lex.yy.c => lexyy.c, all in the aid of
1024: portability to nameless systems.
1.1 tholo 1025:
1.7 millert 1026: "make bundle" now includes yacc and lex output files for recipients
1027: who don't have yacc or lex.
1.1 tholo 1028:
1.7 millert 1029: Aug 15, 1995:
1030: initialized Cells in setsymtab more carefully; some fields
1031: were not set. (thanks to purify, all of whose complaints i
1032: think i now understand.)
1.1 tholo 1033:
1.7 millert 1034: fixed at least one error in gsub that looked at -1-th element
1035: of an array when substituting for a null match (e.g., $).
1.1 tholo 1036:
1.7 millert 1037: delete arrayname is now legal; it clears the elements but leaves
1038: the array, which may not be the right behavior.
1.1 tholo 1039:
1.7 millert 1040: modified makefile: my current make can't cope with the test used
1041: to avoid unnecessary yacc invocations.
1.1 tholo 1042:
1.7 millert 1043: Jul 17, 1995:
1044: added dynamically growing strings to awk.lx.l and b.c
1045: to permit regular expressions to be much bigger.
1046: the state arrays can still overflow.
1.1 tholo 1047:
1.7 millert 1048: Aug 24, 1994:
1049: detect duplicate arguments in function definitions (mdm).
1.1 tholo 1050:
1.7 millert 1051: May 11, 1994:
1052: trivial fix to printf to limit string size in sub().
1.1 tholo 1053:
1.7 millert 1054: Apr 22, 1994:
1055: fixed yet another subtle self-assignment problem:
1056: $1 = $2; $1 = $1 clobbered $1.
1.1 tholo 1057:
1.7 millert 1058: Regression tests now use private echo, to avoid quoting problems.
1.1 tholo 1059:
1.7 millert 1060: Feb 2, 1994:
1061: changed error() to print line number as %d, not %g.
1.1 tholo 1062:
1.7 millert 1063: Jul 23, 1993:
1064: cosmetic changes: increased sizes of some arrays,
1065: reworded some error messages.
1.1 tholo 1066:
1.7 millert 1067: added CONVFMT as in posix (just replaced OFMT in getsval)
1.1 tholo 1068:
1.7 millert 1069: FILENAME is now "" until the first thing that causes a file
1070: to be opened.
1.1 tholo 1071:
1.7 millert 1072: Nov 28, 1992:
1073: deleted yyunput and yyoutput from proto.h;
1074: different versions of lex give these different declarations.
1.1 tholo 1075:
1.7 millert 1076: May 31, 1992:
1077: added -mr N and -mf N options: more record and fields.
1078: these really ought to adjust automatically.
1.1 tholo 1079:
1.7 millert 1080: cleaned up some error messages; "out of space" now means
1081: malloc returned NULL in all cases.
1.1 tholo 1082:
1.7 millert 1083: changed rehash so that if it runs out, it just returns;
1084: things will continue to run slow, but maybe a bit longer.
1.1 tholo 1085:
1.7 millert 1086: Apr 24, 1992:
1087: remove redundant close of stdin when using -f -.
1.1 tholo 1088:
1.7 millert 1089: got rid of core dump with -d; awk -d just prints date.
1.1 tholo 1090:
1.7 millert 1091: Apr 12, 1992:
1092: added explicit check for /dev/std(in,out,err) in redirection.
1093: unlike gawk, no /dev/fd/n yet.
1.1 tholo 1094:
1.7 millert 1095: added (file/pipe) builtin. hard to test satisfactorily.
1096: not posix.
1.1 tholo 1097:
1.7 millert 1098: Feb 20, 1992:
1099: recompile after abortive changes; should be unchanged.
1.1 tholo 1100:
1.7 millert 1101: Dec 2, 1991:
1102: die-casting time: converted to ansi C, installed that.
1.1 tholo 1103:
1.7 millert 1104: Nov 30, 1991:
1105: fixed storage leak in freefa, failing to recover [N]CCL.
1106: thanks to Bill Jones (jones@cs.usask.ca)
1.1 tholo 1107:
1.7 millert 1108: Nov 19, 1991:
1109: use RAND_MAX instead of literal in builtin().
1.1 tholo 1110:
1.7 millert 1111: Nov 12, 1991:
1112: cranked up some fixed-size arrays in b.c, and added a test for
1113: overflow in penter. thanks to mark larsen.
1.1 tholo 1114:
1.7 millert 1115: Sep 24, 1991:
1116: increased buffer in gsub. a very crude fix to a general problem.
1117: and again on Sep 26.
1.1 tholo 1118:
1.7 millert 1119: Aug 18, 1991:
1120: enforce variable name syntax for commandline variables: has to
1121: start with letter or _.
1.1 tholo 1122:
1.7 millert 1123: Jul 27, 1991:
1124: allow newline after ; in for statements.
1.1 tholo 1125:
1.7 millert 1126: Jul 21, 1991:
1127: fixed so that in self-assignment like $1=$1, side effects
1128: like recomputing $0 take place. (this is getting subtle.)
1.1 tholo 1129:
1.7 millert 1130: Jun 30, 1991:
1131: better test for detecting too-long output record.
1.1 tholo 1132:
1.7 millert 1133: Jun 2, 1991:
1134: better defense against very long printf strings.
1135: made break and continue illegal outside of loops.
1.1 tholo 1136:
1.7 millert 1137: May 13, 1991:
1138: removed extra arg on gettemp, tempfree. minor error message rewording.
1.1 tholo 1139:
1140: May 6, 1991:
1141: fixed silly bug in hex parsing in hexstr().
1142: removed an apparently unnecessary test in isnumber().
1143: warn about weird printf conversions.
1144: fixed unchecked array overwrite in relex().
1145:
1146: changed for (i in array) to access elements in sorted order.
1147: then unchanged it -- it really does run slower in too many cases.
1148: left the code in place, commented out.
1149:
1.7 millert 1150: Feb 10, 1991:
1151: check error status on all writes, to avoid banging on full disks.
1.1 tholo 1152:
1.7 millert 1153: Jan 28, 1991:
1154: awk -f - reads the program from stdin.
1.1 tholo 1155:
1.7 millert 1156: Jan 11, 1991:
1157: failed to set numeric state on $0 in cmd|getline context in run.c.
1.1 tholo 1158:
1.7 millert 1159: Nov 2, 1990:
1160: fixed sleazy test for integrality in getsval; use modf.
1.1 tholo 1161:
1.7 millert 1162: Oct 29, 1990:
1163: fixed sleazy buggy code in lib.c that looked (incorrectly) for
1164: too long input lines.
1.1 tholo 1165:
1.7 millert 1166: Oct 14, 1990:
1167: fixed the bug on p. 198 in which it couldn't deduce that an
1168: argument was an array in some contexts. replaced the error
1169: message in intest() by code that damn well makes it an array.
1.1 tholo 1170:
1.7 millert 1171: Oct 8, 1990:
1172: fixed horrible bug: types and values were not preserved in
1173: some kinds of self-assignment. (in assign().)
1.1 tholo 1174:
1.7 millert 1175: Aug 24, 1990:
1176: changed NCHARS to 256 to handle 8-bit characters in strings
1177: presented to match(), etc.
1.1 tholo 1178:
1.7 millert 1179: Jun 26, 1990:
1180: changed struct rrow (awk.h) to use long instead of int for lval,
1181: since cfoll() stores a pointer in it. now works better when int's
1182: are smaller than pointers!
1.1 tholo 1183:
1.7 millert 1184: May 6, 1990:
1185: AVA fixed the grammar so that ! is uniformly of the same precedence as
1186: unary + and -. This renders illegal some constructs like !x=y, which
1187: now has to be parenthesized as !(x=y), and makes others work properly:
1188: !x+y is (!x)+y, and x!y is x !y, not two pattern-action statements.
1189: (These problems were pointed out by Bob Lenk of Posix.)
1.1 tholo 1190:
1.7 millert 1191: Added \x to regular expressions (already in strings).
1192: Limited octal to octal digits; \8 and \9 are not octal.
1193: Centralized the code for parsing escapes in regular expressions.
1194: Added a bunch of tests to T.re and T.sub to verify some of this.
1.1 tholo 1195:
1.7 millert 1196: Feb 9, 1990:
1197: fixed null pointer dereference bug in main.c: -F[nothing]. sigh.
1.1 tholo 1198:
1.7 millert 1199: restored srand behavior: it returns the current seed.
1.1 tholo 1200:
1.7 millert 1201: Jan 18, 1990:
1202: srand now returns previous seed value (0 to start).
1.1 tholo 1203:
1.7 millert 1204: Jan 5, 1990:
1205: fix potential problem in tran.c -- something was freed,
1206: then used in freesymtab.
1.1 tholo 1207:
1.7 millert 1208: Oct 18, 1989:
1209: another try to get the max number of open files set with
1210: relatively machine-independent code.
1.1 tholo 1211:
1.7 millert 1212: small fix to input() in case of multiple reads after EOF.
1.1 tholo 1213:
1.7 millert 1214: Oct 11, 1989:
1215: FILENAME is now defined in the BEGIN block -- too many old
1216: programs broke.
1.1 tholo 1217:
1.7 millert 1218: "-" means stdin in getline as well as on the commandline.
1.1 tholo 1219:
1.7 millert 1220: added a bunch of casts to the code to tell the truth about
1221: char * vs. unsigned char *, a right royal pain. added a
1222: setlocale call to the front of main, though probably no one
1223: has it usefully implemented yet.
1.1 tholo 1224:
1.7 millert 1225: Aug 24, 1989:
1226: removed redundant relational tests against nullnode if parse
1227: tree already had a relational at that point.
1.1 tholo 1228:
1.7 millert 1229: Aug 11, 1989:
1230: fixed bug: commandline variable assignment has to look like
1231: var=something. (consider the man page for =, in file =.1)
1.1 tholo 1232:
1.7 millert 1233: changed number of arguments to functions to static arrays
1234: to avoid repeated malloc calls.
1.1 tholo 1235:
1.7 millert 1236: Aug 2, 1989:
1237: restored -F (space) separator
1.1 tholo 1238:
1.7 millert 1239: Jul 30, 1989:
1240: added -v x=1 y=2 ... for immediate commandline variable assignment;
1241: done before the BEGIN block for sure. they have to precede the
1242: program if the program is on the commandline.
1243: Modified Aug 2 to require a separate -v for each assignment.
1.1 tholo 1244:
1.7 millert 1245: Jul 10, 1989:
1246: fixed ref-thru-zero bug in environment code in tran.c
1.1 tholo 1247:
1.7 millert 1248: Jun 23, 1989:
1249: add newline to usage message.
1.1 tholo 1250:
1.7 millert 1251: Jun 14, 1989:
1252: added some missing ansi printf conversion letters: %i %X %E %G.
1253: no sensible meaning for h or L, so they may not do what one expects.
1.1 tholo 1254:
1.7 millert 1255: made %* conversions work.
1.1 tholo 1256:
1.7 millert 1257: changed x^y so that if n is a positive integer, it's done
1258: by explicit multiplication, thus achieving maximum accuracy.
1259: (this should be done by pow() but it seems not to be locally.)
1260: done to x ^= y as well.
1.1 tholo 1261:
1.7 millert 1262: Jun 4, 1989:
1263: ENVIRON array contains environment: if shell variable V=thing,
1264: ENVIRON["V"] is "thing"
1.1 tholo 1265:
1.7 millert 1266: multiple -f arguments permitted. error reporting is naive.
1267: (they were permitted before, but only the last was used.)
1.1 tholo 1268:
1.7 millert 1269: fixed a really stupid botch in the debugging macro dprintf
1.1 tholo 1270:
1.7 millert 1271: fixed order of evaluation of commandline assignments to match
1272: what the book claims: an argument of the form x=e is evaluated
1273: at the time it would have been opened if it were a filename (p 63).
1274: this invalidates the suggested answer to ex 4-1 (p 195).
1.1 tholo 1275:
1.7 millert 1276: removed some code that permitted -F (space) fieldseparator,
1277: since it didn't quite work right anyway. (restored aug 2)
1.1 tholo 1278:
1.7 millert 1279: Apr 27, 1989:
1280: Line number now accumulated correctly for comment lines.
1.1 tholo 1281:
1.7 millert 1282: Apr 26, 1989:
1283: Debugging output now includes a version date,
1284: if one compiles it into the source each time.
1.1 tholo 1285:
1.7 millert 1286: Apr 9, 1989:
1287: Changed grammar to prohibit constants as 3rd arg of sub and gsub;
1288: prevents class of overwriting-a-constant errors. (Last one?)
1289: This invalidates the "banana" example on page 43 of the book.
1.1 tholo 1290:
1.7 millert 1291: Added \a ("alert"), \v (vertical tab), \xhhh (hexadecimal),
1292: as in ANSI, for strings. Rescinded the sloppiness that permitted
1293: non-octal digits in \ooo. Warning: not all compilers and libraries
1294: will be able to deal with \x correctly.
1.1 tholo 1295:
1.7 millert 1296: Jan 9, 1989:
1297: Fixed bug that caused tempcell list to contain a duplicate.
1298: The fix is kludgy.
1.1 tholo 1299:
1.7 millert 1300: Dec 17, 1988:
1301: Catches some more commandline errors in main.
1302: Removed redundant decl of modf in run.c (confuses some compilers).
1303: Warning: there's no single declaration of malloc, etc., in awk.h
1304: that seems to satisfy all compilers.
1.1 tholo 1305:
1.7 millert 1306: Dec 7, 1988:
1307: Added a bit of code to error printing to avoid printing nulls.
1308: (Not clear that it actually would.)
1.1 tholo 1309:
1.7 millert 1310: Nov 27, 1988:
1311: With fear and trembling, modified the grammar to permit
1312: multiple pattern-action statements on one line without
1313: an explicit separator. By definition, this capitulation
1314: to the ghost of ancient implementations remains undefined
1315: and thus subject to change without notice or apology.
1316: DO NOT COUNT ON IT.
1.1 tholo 1317:
1.7 millert 1318: Oct 30, 1988:
1319: Fixed bug in call() that failed to recover storage.
1.1 tholo 1320:
1.7 millert 1321: A warning is now generated if there are more arguments
1322: in the call than in the definition (in lieu of fixing
1323: another storage leak).
1.2 millert 1324:
1.7 millert 1325: Oct 20, 1988:
1326: Fixed %c: if expr is numeric, use numeric value;
1327: otherwise print 1st char of string value. still
1328: doesn't work if the value is 0 -- won't print \0.
1.2 millert 1329:
1.7 millert 1330: Added a few more checks for running out of malloc.
1.2 millert 1331:
1.7 millert 1332: Oct 12, 1988:
1333: Fixed bug in call() that freed local arrays twice.
1.5 kstailey 1334:
1.7 millert 1335: Fixed to handle deletion of non-existent array right;
1336: complains about attempt to delete non-array element.
1.6 kstailey 1337:
1.7 millert 1338: Sep 30, 1988:
1339: Now guarantees to evaluate all arguments of built-in
1340: functions, as in C; the appearance is that arguments
1341: are evaluated before the function is called. Places
1342: affected are sub (gsub was ok), substr, printf, and
1343: all the built-in arithmetic functions in bltin().
1344: A warning is generated if a bltin() is called with
1345: the wrong number of arguments.
1.6 kstailey 1346:
1.7 millert 1347: This requires changing makeprof on p167 of the book.
1.6 kstailey 1348:
1.7 millert 1349: Aug 23, 1988:
1350: setting FILENAME in BEGIN caused core dump, apparently
1351: because it was freeing space not allocated by malloc.
1.6 kstailey 1352:
1.7 millert 1353: July 24, 1988:
1354: fixed egregious error in toupper/tolower functions.
1355: still subject to rescinding, however.
1.6 kstailey 1356:
1.7 millert 1357: July 2, 1988:
1358: flush stdout before opening file or pipe
1.6 kstailey 1359:
1.7 millert 1360: July 2, 1988:
1361: performance bug in b.c/cgoto(): not freeing some sets of states.
1362: partial fix only right now, and the number of states increased
1363: to make it less obvious.
1.6 kstailey 1364:
1.7 millert 1365: June 1, 1988:
1366: check error status on close
1.6 kstailey 1367:
1.7 millert 1368: May 28, 1988:
1369: srand returns seed value it's using.
1370: see 1/18/90
1.6 kstailey 1371:
1.7 millert 1372: May 22, 1988:
1373: Removed limit on depth of function calls.
1.6 kstailey 1374:
1.7 millert 1375: May 10, 1988:
1376: Fixed lib.c to permit _ in commandline variable names.
1.6 kstailey 1377:
1.7 millert 1378: Mar 25, 1988:
1379: main.c fixed to recognize -- as terminator of command-
1380: line options. Illegal options flagged.
1381: Error reporting slightly cleaned up.
1.6 kstailey 1382:
1.7 millert 1383: Dec 2, 1987:
1384: Newer C compilers apply a strict scope rule to extern
1385: declarations within functions. Two extern declarations in
1386: lib.c and tran.c have been moved to obviate this problem.
1.6 kstailey 1387:
1.7 millert 1388: Oct xx, 1987:
1389: Reluctantly added toupper and tolower functions.
1390: Subject to rescinding without notice.
1.6 kstailey 1391:
1.7 millert 1392: Sep 17, 1987:
1393: Error-message printer had printf(s) instead of
1394: printf("%s",s); got core dumps when the message
1395: included a %.
1.6 kstailey 1396:
1.7 millert 1397: Sep 12, 1987:
1398: Very long printf strings caused core dump;
1399: fixed aprintf, asprintf, format to catch them.
1400: Can still get a core dump in printf itself.
1.6 kstailey 1401:
1402:
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