Annotation of src/usr.bin/awk/FIXES, Revision 1.12
1.12 ! otto 1: /* $OpenBSD: FIXES,v 1.11 2002/12/19 21:24:28 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,
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18: IN NO EVENT SHALL LUCENT OR ANY OF ITS ENTITIES BE LIABLE FOR ANY
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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.
1.11 millert 28:
29: Dec 13, 2002:
30: for the moment, the internationalization changes of nov 29 are
31: rolled back -- programs like x = 1.2 don't work in some locales,
32: because the parser is expecting x = 1,2. until i understand this
33: better, this will have to wait.
34:
35: Nov 29, 2002:
36: modified b.c (with tiny changes in main and run) to support
37: locales, using strcoll and iswhatever tests for posix character
38: classes. thanks to ruslan ermilov (ru@freebsd.org) for code.
39: the function isblank doesn't seem to have propagated to any
40: header file near me, so it's there explicitly. not properly
41: tested on non-ascii character sets by me.
42:
43: Jun 28, 2002:
44: modified run/format() and tran/getsval() to do a slightly better
45: job on using OFMT for output from print and CONVFMT for other
46: number->string conversions, as promised by posix and done by
47: gawk and mawk. there are still places where it doesn't work
48: right if CONVFMT is changed; by then the STR attribute of the
49: variable has been irrevocably set. thanks to arnold robbins for
50: code and examples.
51:
52: fixed subtle bug in format that could get core dump. thanks to
53: Jaromir Dolecek <jdolecek@NetBSD.org> for finding and fixing.
54: minor cleanup in run.c / format() at the same time.
55:
56: added some tests for null pointers to debugging printf's, which
57: were never intended for external consumption. thanks to dave
58: kerns (dkerns@lucent.com) for pointing this out.
59:
60: GNU compatibility: an empty regexp matches anything (thanks to
61: dag-erling smorgrav, des@ofug.org). subject to reversion if
62: this does more harm than good.
63:
64: pervasive small changes to make things more const-correct, as
65: reported by gcc's -Wwrite-strings. as it says in the gcc manual,
66: this may be more nuisance than useful. provoked by a suggestion
67: and code from arnaud desitter, arnaud@nimbus.geog.ox.ac.uk
68:
69: minor documentation changes to note that this now compiles out
70: of the box on Mac OS X.
71:
72: Feb 10, 2002:
73: changed types in posix chars structure to quiet solaris cc.
74:
75: Jan 1, 2002:
76: fflush() or fflush("") flushes all files and pipes.
77:
78: length(arrayname) returns number of elements; thanks to
79: arnold robbins for suggestion.
80:
81: added a makefile.win to make it easier to build on windows.
82: based on dan allen's buildwin.bat.
83:
84: Nov 16, 2001:
85: added support for posix character class names like [:digit:],
86: which are not exactly shorter than [0-9] and perhaps no more
87: portable. thanks to dag-erling smorgrav for code.
88:
89: Feb 16, 2001:
90: removed -m option; no longer needed, and it was actually
91: broken (noted thanks to volker kiefel).
92:
93: Feb 10, 2001:
94: fixed an appalling bug in gettok: any sequence of digits, +,-, E, e,
95: and period was accepted as a valid number if it started with a period.
96: this would never have happened with the lex version.
97:
98: other 1-character botches, now fixed, include a bare $ and a
99: bare " at the end of the input.
100:
101: Feb 7, 2001:
102: more (const char *) casts in b.c and tran.c to silence warnings.
1.8 millert 103:
1.10 millert 104: Nov 15, 2000:
105: fixed a bug introduced in august 1997 that caused expressions
106: like $f[1] to be syntax errors. thanks to arnold robbins for
107: noticing this and providing a fix.
108:
109: Oct 30, 2000:
110: fixed some nextfile bugs: not handling all cases. thanks to
111: arnold robbins for pointing this out. new regressions added.
112:
113: close() is now a function. it returns whatever the library
114: fclose returns, and -1 for closing a file or pipe that wasn't
115: opened.
116:
117: Sep 24, 2000:
118: permit \n explicitly in character classes; won't work right
119: if comes in as "[\n]" but ok as /[\n]/, because of multiple
120: processing of \'s. thanks to arnold robbins.
121:
122: July 5, 2000:
123: minor fiddles in tran.c to keep compilers happy about uschar.
124: thanks to norman wilson.
125:
126: May 25, 2000:
127: yet another attempt at making 8-bit input work, with another
128: band-aid in b.c (member()), and some (uschar) casts to head
129: off potential errors in subscripts (like isdigit). also
130: changed HAT to NCHARS-2. thanks again to santiago vila.
131:
132: changed maketab.c to ignore apparently out of range definitions
133: instead of halting; new freeBSD generates one. thanks to
134: jon snader <jsnader@ix.netcom.com> for pointing out the problem.
135:
136: May 2, 2000:
137: fixed an 8-bit problem in b.c by making several char*'s into
138: unsigned char*'s. not clear i have them all yet. thanks to
139: Santiago Vila <sanvila@unex.es> for the bug report.
140:
141: Apr 21, 2000:
142: finally found and fixed a memory leak in function call; it's
143: been there since functions were added ~1983. thanks to
144: jon bentley for the test case that found it.
145:
146: added test in envinit to catch environment "variables" with
1.12 ! otto 147: names beginning with '='; thanks to Berend Hasselman.
1.10 millert 148:
149: Jul 28, 1999:
150: added test in defn() to catch function foo(foo), which
151: otherwise recurses until core dump. thanks to arnold
152: robbins for noticing this.
153:
1.9 millert 154: Jun 20, 1999:
155: added *bp in gettok in lex.c; appears possible to exit function
156: without terminating the string. thanks to russ cox.
157:
158: Jun 2, 1999:
159: added function stdinit() to run to initialize files[] array,
160: in case stdin, etc., are not constants; some compilers care.
161:
162: May 10, 1999:
163: replaced the ERROR ... FATAL, etc., macros with functions
164: based on vprintf, to avoid problems caused by overrunning
165: fixed-size errbuf array. thanks to ralph corderoy for the
166: impetus, and for pointing out a string termination bug in
167: qstring as well.
168:
169: Apr 21, 1999:
170: fixed bug that caused occasional core dumps with commandline
171: variable with value ending in \. (thanks to nelson beebe for
172: the test case.)
173:
1.8 millert 174: Apr 16, 1999:
175: with code kindly provided by Bruce Lilly, awk now parses
176: /=/ and similar constructs more sensibly in more places.
1.10 millert 177: Bruce also provided some helpful test cases.
1.8 millert 178:
179: Apr 5, 1999:
180: changed true/false to True/False in run.c to make it
181: easier to compile with C++. Added some casts on malloc
182: and realloc to be honest about casts; ditto. changed
183: ltype int to long in struct rrow to reduce some 64-bit
184: complaints; other changes scattered throughout for the
185: same purpose. thanks to Nelson Beebe for these portability
186: improvements.
187:
188: removed some horrible pointer-int casting in b.c and elsewhere
189: by adding ptoi and itonp to localize the casts, which are
190: all benign. fixed one incipient bug that showed up on sgi
191: in 64-bit mode.
192:
193: reset lineno for new source file; include filename in error
194: message. also fixed line number error in continuation lines.
195: (thanks to Nelson Beebe for both of these.)
196:
197: Mar 24, 1999:
198: Nelson Beebe notes that irix 5.3 yacc dies with a bogus
199: error; use a newer version or switch to bison, since sgi
200: is unlikely to fix it.
1.1 tholo 201:
1.7 millert 202: Mar 5, 1999:
1.9 millert 203: changed isnumber to is_number to avoid the problem caused by
204: versions of ctype.h that include the name isnumber.
1.7 millert 205:
206: distribution now includes a script for building on a Mac,
207: thanks to Dan Allen.
208:
209: Feb 20, 1999:
210: fixed memory leaks in run.c (call) and tran.c (setfval).
211: thanks to Stephen Nutt for finding these and providing the fixes.
212:
213: Jan 13, 1999:
214: replaced srand argument by (unsigned int) in run.c;
215: avoids problem on Mac and potentially on Unix & Windows.
216: thanks to Dan Allen.
217:
218: added a few (int) casts to silence useless compiler warnings.
219: e.g., errorflag= in run.c jump().
220:
221: added proctab.c to the bundle outout; one less thing
222: to have to compile out of the box.
223:
224: added calls to _popen and _pclose to the win95 stub for
225: pipes (thanks to Steve Adams for this helpful suggestion).
226: seems to work, though properties are not well understood
227: by me, and it appears that under some circumstances the
228: pipe output is truncated. Be careful.
229:
230: Oct 19, 1998:
231: fixed a couple of bugs in getrec: could fail to update $0
232: after a getline var; because inputFS wasn't initialized,
233: could split $0 on every character, a misleading diversion.
234:
235: fixed caching bug in makedfa: LRU was actually removing
236: least often used.
237:
238: thanks to ross ridge for finding these, and for providing
239: great bug reports.
240:
241: May 12, 1998:
242: fixed potential bug in readrec: might fail to update record
243: pointer after growing. thanks to dan levy for spotting this
244: and suggesting the fix.
245:
246: Mar 12, 1998:
247: added -V to print version number and die.
248:
249: Feb 11, 1998:
250: subtle silent bug in lex.c: if the program ended with a number
251: longer than 1 digit, part of the input would be pushed back and
252: parsed again because token buffer wasn't terminated right.
253: example: awk 'length($0) > 10'. blush. at least i found it
254: myself.
255:
256: Aug 31, 1997:
257: s/adelete/awkdelete/: SGI uses this in malloc.h.
258: thanks to nelson beebe for pointing this one out.
259:
260: Aug 21, 1997:
261: fixed some bugs in sub and gsub when replacement includes \\.
262: this is a dark, horrible corner, but at least now i believe that
263: the behavior is the same as gawk and the intended posix standard.
264: thanks to arnold robbins for advice here.
265:
266: Aug 9, 1997:
267: somewhat regretfully, replaced the ancient lex-based lexical
268: analyzer with one written in C. it's longer, generates less code,
269: and more portable; the old one depended too much on mysterious
270: properties of lex that were not preserved in other environments.
271: in theory these recognize the same language.
272:
273: now using strtod to test whether a string is a number, instead of
274: the convoluted original function. should be more portable and
275: reliable if strtod is implemented right.
276:
277: removed now-pointless optimization in makefile that tries to avoid
278: recompilation when awkgram.y is changed but symbols are not.
279:
280: removed most fixed-size arrays, though a handful remain, some
281: of which are unchecked. you have been warned.
282:
283: Aug 4, 1997:
284: with some trepidation, replaced the ancient code that managed
285: fields and $0 in fixed-size arrays with arrays that grow on
286: demand. there is still some tension between trying to make this
287: run fast and making it clean; not sure it's right yet.
288:
289: the ill-conceived -mr and -mf arguments are now useful only
290: for debugging. previous dynamic string code removed.
291:
292: numerous other minor cleanups along the way.
1.1 tholo 293:
1.7 millert 294: Jul 30, 1997:
295: using code provided by dan levy (to whom profuse thanks), replaced
296: fixed-size arrays and awkward kludges by a fairly uniform mechanism
297: to grow arrays as needed for printf, sub, gsub, etc.
1.1 tholo 298:
1.7 millert 299: Jul 23, 1997:
300: falling off the end of a function returns "" and 0, not 0.
301: thanks to arnold robbins.
1.1 tholo 302:
1.7 millert 303: Jun 17, 1997:
304: replaced several fixed-size arrays by dynamically-created ones
305: in run.c; added overflow tests to some previously unchecked cases.
306: getline, toupper, tolower.
1.1 tholo 307:
1.7 millert 308: getline code is still broken in that recursive calls may wind
309: up using the same space. [fixed later]
1.1 tholo 310:
1.7 millert 311: increased RECSIZE to 8192 to push problems further over the horizon.
1.1 tholo 312:
1.7 millert 313: added \r to \n as input line separator for programs, not data.
314: damn CRLFs.
1.1 tholo 315:
1.7 millert 316: modified format() to permit explicit printf("%c", 0) to include
317: a null byte in output. thanks to ken stailey for the fix.
1.1 tholo 318:
1.7 millert 319: added a "-safe" argument that disables file output (print >,
320: print >>), process creation (cmd|getline, print |, system), and
321: access to the environment (ENVIRON). this is a first approximation
322: to a "safe" version of awk, but don't rely on it too much. thanks
323: to joan feigenbaum and matt blaze for the inspiration long ago.
1.1 tholo 324:
1.7 millert 325: Jul 8, 1996:
326: fixed long-standing bug in sub, gsub(/a/, "\\\\&"); thanks to
327: ralph corderoy.
1.1 tholo 328:
1.7 millert 329: Jun 29, 1996:
330: fixed awful bug in new field splitting; didn't get all the places
331: where input was done.
1.1 tholo 332:
1.7 millert 333: Jun 28, 1996:
334: changed field-splitting to conform to posix definition: fields are
335: split using the value of FS at the time of input; it used to be
336: the value when the field or NF was first referred to, a much less
337: predictable definition. thanks to arnold robbins for encouragement
338: to do the right thing.
1.1 tholo 339:
1.7 millert 340: May 28, 1996:
341: fixed appalling but apparently unimportant bug in parsing octal
342: numbers in reg exprs.
1.1 tholo 343:
1.7 millert 344: explicit hex in reg exprs now limited to 2 chars: \xa, \xaa.
1.1 tholo 345:
1.7 millert 346: May 27, 1996:
347: cleaned up some declarations so gcc -Wall is now almost silent.
1.1 tholo 348:
1.7 millert 349: makefile now includes backup copies of ytab.c and lexyy.c in case
350: one makes before looking; it also avoids recreating lexyy.c unless
351: really needed.
1.1 tholo 352:
1.7 millert 353: s/aprintf/awkprint, s/asprintf/awksprintf/ to avoid some name clashes
354: with unwisely-written header files.
1.1 tholo 355:
1.7 millert 356: thanks to jeffrey friedl for several of these.
1.1 tholo 357:
1.7 millert 358: May 26, 1996:
359: an attempt to rationalize the (unsigned) char issue. almost all
360: instances of unsigned char have been removed; the handful of places
361: in b.c where chars are used as table indices have been hand-crafted.
362: added some latin-1 tests to the regression, but i'm not confident;
363: none of my compilers seem to care much. thanks to nelson beebe for
364: pointing out some others that do care.
1.1 tholo 365:
1.7 millert 366: May 2, 1996:
367: removed all register declarations.
1.1 tholo 368:
1.7 millert 369: enhanced split(), as in gawk, etc: split(s, a, "") splits s into
370: a[1]...a[length(s)] with each character a single element.
1.1 tholo 371:
1.7 millert 372: made the same changes for field-splitting if FS is "".
1.1 tholo 373:
1.7 millert 374: added nextfile, as in gawk: causes immediate advance to next
375: input file. (thanks to arnold robbins for inspiration and code).
1.1 tholo 376:
1.7 millert 377: small fixes to regexpr code: can now handle []], [[], and
378: variants; [] is now a syntax error, rather than matching
379: everything; [z-a] is now empty, not z. far from complete
380: or correct, however. (thanks to jeffrey friedl for pointing out
381: some awful behaviors.)
1.1 tholo 382:
1.7 millert 383: Apr 29, 1996:
1.12 ! otto 384: replaced uchar by uschar everywhere; apparently some compilers
1.7 millert 385: usurp this name and this causes conflicts.
1.1 tholo 386:
1.7 millert 387: fixed call to time in run.c (bltin); arg is time_t *.
1.1 tholo 388:
1.7 millert 389: replaced horrible pointer/long punning in b.c by a legitimate
390: union. should be safer on 64-bit machines and cleaner everywhere.
391: (thanks to nelson beebe for pointing out some of these problems.)
1.1 tholo 392:
1.7 millert 393: replaced nested comments by #if 0...#endif in run.c, lib.c.
1.1 tholo 394:
1.7 millert 395: removed getsval, setsval, execute macros from run.c and lib.c.
396: machines are 100x faster than they were when these macros were
397: first used.
1.1 tholo 398:
1.7 millert 399: revised filenames: awk.g.y => awkgram.y, awk.lx.l => awklex.l,
400: y.tab.[ch] => ytab.[ch], lex.yy.c => lexyy.c, all in the aid of
401: portability to nameless systems.
1.1 tholo 402:
1.7 millert 403: "make bundle" now includes yacc and lex output files for recipients
404: who don't have yacc or lex.
1.1 tholo 405:
1.7 millert 406: Aug 15, 1995:
407: initialized Cells in setsymtab more carefully; some fields
408: were not set. (thanks to purify, all of whose complaints i
409: think i now understand.)
1.1 tholo 410:
1.7 millert 411: fixed at least one error in gsub that looked at -1-th element
412: of an array when substituting for a null match (e.g., $).
1.1 tholo 413:
1.7 millert 414: delete arrayname is now legal; it clears the elements but leaves
415: the array, which may not be the right behavior.
1.1 tholo 416:
1.7 millert 417: modified makefile: my current make can't cope with the test used
418: to avoid unnecessary yacc invocations.
1.1 tholo 419:
1.7 millert 420: Jul 17, 1995:
421: added dynamically growing strings to awk.lx.l and b.c
422: to permit regular expressions to be much bigger.
423: the state arrays can still overflow.
1.1 tholo 424:
1.7 millert 425: Aug 24, 1994:
426: detect duplicate arguments in function definitions (mdm).
1.1 tholo 427:
1.7 millert 428: May 11, 1994:
429: trivial fix to printf to limit string size in sub().
1.1 tholo 430:
1.7 millert 431: Apr 22, 1994:
432: fixed yet another subtle self-assignment problem:
433: $1 = $2; $1 = $1 clobbered $1.
1.1 tholo 434:
1.7 millert 435: Regression tests now use private echo, to avoid quoting problems.
1.1 tholo 436:
1.7 millert 437: Feb 2, 1994:
438: changed error() to print line number as %d, not %g.
1.1 tholo 439:
1.7 millert 440: Jul 23, 1993:
441: cosmetic changes: increased sizes of some arrays,
442: reworded some error messages.
1.1 tholo 443:
1.7 millert 444: added CONVFMT as in posix (just replaced OFMT in getsval)
1.1 tholo 445:
1.7 millert 446: FILENAME is now "" until the first thing that causes a file
447: to be opened.
1.1 tholo 448:
1.7 millert 449: Nov 28, 1992:
450: deleted yyunput and yyoutput from proto.h;
451: different versions of lex give these different declarations.
1.1 tholo 452:
1.7 millert 453: May 31, 1992:
454: added -mr N and -mf N options: more record and fields.
455: these really ought to adjust automatically.
1.1 tholo 456:
1.7 millert 457: cleaned up some error messages; "out of space" now means
458: malloc returned NULL in all cases.
1.1 tholo 459:
1.7 millert 460: changed rehash so that if it runs out, it just returns;
461: things will continue to run slow, but maybe a bit longer.
1.1 tholo 462:
1.7 millert 463: Apr 24, 1992:
464: remove redundant close of stdin when using -f -.
1.1 tholo 465:
1.7 millert 466: got rid of core dump with -d; awk -d just prints date.
1.1 tholo 467:
1.7 millert 468: Apr 12, 1992:
469: added explicit check for /dev/std(in,out,err) in redirection.
470: unlike gawk, no /dev/fd/n yet.
1.1 tholo 471:
1.7 millert 472: added (file/pipe) builtin. hard to test satisfactorily.
473: not posix.
1.1 tholo 474:
1.7 millert 475: Feb 20, 1992:
476: recompile after abortive changes; should be unchanged.
1.1 tholo 477:
1.7 millert 478: Dec 2, 1991:
479: die-casting time: converted to ansi C, installed that.
1.1 tholo 480:
1.7 millert 481: Nov 30, 1991:
482: fixed storage leak in freefa, failing to recover [N]CCL.
483: thanks to Bill Jones (jones@cs.usask.ca)
1.1 tholo 484:
1.7 millert 485: Nov 19, 1991:
486: use RAND_MAX instead of literal in builtin().
1.1 tholo 487:
1.7 millert 488: Nov 12, 1991:
489: cranked up some fixed-size arrays in b.c, and added a test for
490: overflow in penter. thanks to mark larsen.
1.1 tholo 491:
1.7 millert 492: Sep 24, 1991:
493: increased buffer in gsub. a very crude fix to a general problem.
494: and again on Sep 26.
1.1 tholo 495:
1.7 millert 496: Aug 18, 1991:
497: enforce variable name syntax for commandline variables: has to
498: start with letter or _.
1.1 tholo 499:
1.7 millert 500: Jul 27, 1991:
501: allow newline after ; in for statements.
1.1 tholo 502:
1.7 millert 503: Jul 21, 1991:
504: fixed so that in self-assignment like $1=$1, side effects
505: like recomputing $0 take place. (this is getting subtle.)
1.1 tholo 506:
1.7 millert 507: Jun 30, 1991:
508: better test for detecting too-long output record.
1.1 tholo 509:
1.7 millert 510: Jun 2, 1991:
511: better defense against very long printf strings.
512: made break and continue illegal outside of loops.
1.1 tholo 513:
1.7 millert 514: May 13, 1991:
515: removed extra arg on gettemp, tempfree. minor error message rewording.
1.1 tholo 516:
517: May 6, 1991:
518: fixed silly bug in hex parsing in hexstr().
519: removed an apparently unnecessary test in isnumber().
520: warn about weird printf conversions.
521: fixed unchecked array overwrite in relex().
522:
523: changed for (i in array) to access elements in sorted order.
524: then unchanged it -- it really does run slower in too many cases.
525: left the code in place, commented out.
526:
1.7 millert 527: Feb 10, 1991:
528: check error status on all writes, to avoid banging on full disks.
1.1 tholo 529:
1.7 millert 530: Jan 28, 1991:
531: awk -f - reads the program from stdin.
1.1 tholo 532:
1.7 millert 533: Jan 11, 1991:
534: failed to set numeric state on $0 in cmd|getline context in run.c.
1.1 tholo 535:
1.7 millert 536: Nov 2, 1990:
537: fixed sleazy test for integrality in getsval; use modf.
1.1 tholo 538:
1.7 millert 539: Oct 29, 1990:
540: fixed sleazy buggy code in lib.c that looked (incorrectly) for
541: too long input lines.
1.1 tholo 542:
1.7 millert 543: Oct 14, 1990:
544: fixed the bug on p. 198 in which it couldn't deduce that an
545: argument was an array in some contexts. replaced the error
546: message in intest() by code that damn well makes it an array.
1.1 tholo 547:
1.7 millert 548: Oct 8, 1990:
549: fixed horrible bug: types and values were not preserved in
550: some kinds of self-assignment. (in assign().)
1.1 tholo 551:
1.7 millert 552: Aug 24, 1990:
553: changed NCHARS to 256 to handle 8-bit characters in strings
554: presented to match(), etc.
1.1 tholo 555:
1.7 millert 556: Jun 26, 1990:
557: changed struct rrow (awk.h) to use long instead of int for lval,
558: since cfoll() stores a pointer in it. now works better when int's
559: are smaller than pointers!
1.1 tholo 560:
1.7 millert 561: May 6, 1990:
562: AVA fixed the grammar so that ! is uniformly of the same precedence as
563: unary + and -. This renders illegal some constructs like !x=y, which
564: now has to be parenthesized as !(x=y), and makes others work properly:
565: !x+y is (!x)+y, and x!y is x !y, not two pattern-action statements.
566: (These problems were pointed out by Bob Lenk of Posix.)
1.1 tholo 567:
1.7 millert 568: Added \x to regular expressions (already in strings).
569: Limited octal to octal digits; \8 and \9 are not octal.
570: Centralized the code for parsing escapes in regular expressions.
571: Added a bunch of tests to T.re and T.sub to verify some of this.
1.1 tholo 572:
1.7 millert 573: Feb 9, 1990:
574: fixed null pointer dereference bug in main.c: -F[nothing]. sigh.
1.1 tholo 575:
1.7 millert 576: restored srand behavior: it returns the current seed.
1.1 tholo 577:
1.7 millert 578: Jan 18, 1990:
579: srand now returns previous seed value (0 to start).
1.1 tholo 580:
1.7 millert 581: Jan 5, 1990:
582: fix potential problem in tran.c -- something was freed,
583: then used in freesymtab.
1.1 tholo 584:
1.7 millert 585: Oct 18, 1989:
586: another try to get the max number of open files set with
587: relatively machine-independent code.
1.1 tholo 588:
1.7 millert 589: small fix to input() in case of multiple reads after EOF.
1.1 tholo 590:
1.7 millert 591: Oct 11, 1989:
592: FILENAME is now defined in the BEGIN block -- too many old
593: programs broke.
1.1 tholo 594:
1.7 millert 595: "-" means stdin in getline as well as on the commandline.
1.1 tholo 596:
1.7 millert 597: added a bunch of casts to the code to tell the truth about
598: char * vs. unsigned char *, a right royal pain. added a
599: setlocale call to the front of main, though probably no one
600: has it usefully implemented yet.
1.1 tholo 601:
1.7 millert 602: Aug 24, 1989:
603: removed redundant relational tests against nullnode if parse
604: tree already had a relational at that point.
1.1 tholo 605:
1.7 millert 606: Aug 11, 1989:
607: fixed bug: commandline variable assignment has to look like
608: var=something. (consider the man page for =, in file =.1)
1.1 tholo 609:
1.7 millert 610: changed number of arguments to functions to static arrays
611: to avoid repeated malloc calls.
1.1 tholo 612:
1.7 millert 613: Aug 2, 1989:
614: restored -F (space) separator
1.1 tholo 615:
1.7 millert 616: Jul 30, 1989:
617: added -v x=1 y=2 ... for immediate commandline variable assignment;
618: done before the BEGIN block for sure. they have to precede the
619: program if the program is on the commandline.
620: Modified Aug 2 to require a separate -v for each assignment.
1.1 tholo 621:
1.7 millert 622: Jul 10, 1989:
623: fixed ref-thru-zero bug in environment code in tran.c
1.1 tholo 624:
1.7 millert 625: Jun 23, 1989:
626: add newline to usage message.
1.1 tholo 627:
1.7 millert 628: Jun 14, 1989:
629: added some missing ansi printf conversion letters: %i %X %E %G.
630: no sensible meaning for h or L, so they may not do what one expects.
1.1 tholo 631:
1.7 millert 632: made %* conversions work.
1.1 tholo 633:
1.7 millert 634: changed x^y so that if n is a positive integer, it's done
635: by explicit multiplication, thus achieving maximum accuracy.
636: (this should be done by pow() but it seems not to be locally.)
637: done to x ^= y as well.
1.1 tholo 638:
1.7 millert 639: Jun 4, 1989:
640: ENVIRON array contains environment: if shell variable V=thing,
641: ENVIRON["V"] is "thing"
1.1 tholo 642:
1.7 millert 643: multiple -f arguments permitted. error reporting is naive.
644: (they were permitted before, but only the last was used.)
1.1 tholo 645:
1.7 millert 646: fixed a really stupid botch in the debugging macro dprintf
1.1 tholo 647:
1.7 millert 648: fixed order of evaluation of commandline assignments to match
649: what the book claims: an argument of the form x=e is evaluated
650: at the time it would have been opened if it were a filename (p 63).
651: this invalidates the suggested answer to ex 4-1 (p 195).
1.1 tholo 652:
1.7 millert 653: removed some code that permitted -F (space) fieldseparator,
654: since it didn't quite work right anyway. (restored aug 2)
1.1 tholo 655:
1.7 millert 656: Apr 27, 1989:
657: Line number now accumulated correctly for comment lines.
1.1 tholo 658:
1.7 millert 659: Apr 26, 1989:
660: Debugging output now includes a version date,
661: if one compiles it into the source each time.
1.1 tholo 662:
1.7 millert 663: Apr 9, 1989:
664: Changed grammar to prohibit constants as 3rd arg of sub and gsub;
665: prevents class of overwriting-a-constant errors. (Last one?)
666: This invalidates the "banana" example on page 43 of the book.
1.1 tholo 667:
1.7 millert 668: Added \a ("alert"), \v (vertical tab), \xhhh (hexadecimal),
669: as in ANSI, for strings. Rescinded the sloppiness that permitted
670: non-octal digits in \ooo. Warning: not all compilers and libraries
671: will be able to deal with \x correctly.
1.1 tholo 672:
1.7 millert 673: Jan 9, 1989:
674: Fixed bug that caused tempcell list to contain a duplicate.
675: The fix is kludgy.
1.1 tholo 676:
1.7 millert 677: Dec 17, 1988:
678: Catches some more commandline errors in main.
679: Removed redundant decl of modf in run.c (confuses some compilers).
680: Warning: there's no single declaration of malloc, etc., in awk.h
681: that seems to satisfy all compilers.
1.1 tholo 682:
1.7 millert 683: Dec 7, 1988:
684: Added a bit of code to error printing to avoid printing nulls.
685: (Not clear that it actually would.)
1.1 tholo 686:
1.7 millert 687: Nov 27, 1988:
688: With fear and trembling, modified the grammar to permit
689: multiple pattern-action statements on one line without
690: an explicit separator. By definition, this capitulation
691: to the ghost of ancient implementations remains undefined
692: and thus subject to change without notice or apology.
693: DO NOT COUNT ON IT.
1.1 tholo 694:
1.7 millert 695: Oct 30, 1988:
696: Fixed bug in call() that failed to recover storage.
1.1 tholo 697:
1.7 millert 698: A warning is now generated if there are more arguments
699: in the call than in the definition (in lieu of fixing
700: another storage leak).
1.2 millert 701:
1.7 millert 702: Oct 20, 1988:
703: Fixed %c: if expr is numeric, use numeric value;
704: otherwise print 1st char of string value. still
705: doesn't work if the value is 0 -- won't print \0.
1.2 millert 706:
1.7 millert 707: Added a few more checks for running out of malloc.
1.2 millert 708:
1.7 millert 709: Oct 12, 1988:
710: Fixed bug in call() that freed local arrays twice.
1.5 kstailey 711:
1.7 millert 712: Fixed to handle deletion of non-existent array right;
713: complains about attempt to delete non-array element.
1.6 kstailey 714:
1.7 millert 715: Sep 30, 1988:
716: Now guarantees to evaluate all arguments of built-in
717: functions, as in C; the appearance is that arguments
718: are evaluated before the function is called. Places
719: affected are sub (gsub was ok), substr, printf, and
720: all the built-in arithmetic functions in bltin().
721: A warning is generated if a bltin() is called with
722: the wrong number of arguments.
1.6 kstailey 723:
1.7 millert 724: This requires changing makeprof on p167 of the book.
1.6 kstailey 725:
1.7 millert 726: Aug 23, 1988:
727: setting FILENAME in BEGIN caused core dump, apparently
728: because it was freeing space not allocated by malloc.
1.6 kstailey 729:
1.7 millert 730: July 24, 1988:
731: fixed egregious error in toupper/tolower functions.
732: still subject to rescinding, however.
1.6 kstailey 733:
1.7 millert 734: July 2, 1988:
735: flush stdout before opening file or pipe
1.6 kstailey 736:
1.7 millert 737: July 2, 1988:
738: performance bug in b.c/cgoto(): not freeing some sets of states.
739: partial fix only right now, and the number of states increased
740: to make it less obvious.
1.6 kstailey 741:
1.7 millert 742: June 1, 1988:
743: check error status on close
1.6 kstailey 744:
1.7 millert 745: May 28, 1988:
746: srand returns seed value it's using.
747: see 1/18/90
1.6 kstailey 748:
1.7 millert 749: May 22, 1988:
750: Removed limit on depth of function calls.
1.6 kstailey 751:
1.7 millert 752: May 10, 1988:
753: Fixed lib.c to permit _ in commandline variable names.
1.6 kstailey 754:
1.7 millert 755: Mar 25, 1988:
756: main.c fixed to recognize -- as terminator of command-
757: line options. Illegal options flagged.
758: Error reporting slightly cleaned up.
1.6 kstailey 759:
1.7 millert 760: Dec 2, 1987:
761: Newer C compilers apply a strict scope rule to extern
762: declarations within functions. Two extern declarations in
763: lib.c and tran.c have been moved to obviate this problem.
1.6 kstailey 764:
1.7 millert 765: Oct xx, 1987:
766: Reluctantly added toupper and tolower functions.
767: Subject to rescinding without notice.
1.6 kstailey 768:
1.7 millert 769: Sep 17, 1987:
770: Error-message printer had printf(s) instead of
771: printf("%s",s); got core dumps when the message
772: included a %.
1.6 kstailey 773:
1.7 millert 774: Sep 12, 1987:
775: Very long printf strings caused core dump;
776: fixed aprintf, asprintf, format to catch them.
777: Can still get a core dump in printf itself.
1.6 kstailey 778:
779:
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