185587Sobrien/**************************************************************** 285587SobrienCopyright (C) Lucent Technologies 1997 385587SobrienAll Rights Reserved 485587Sobrien 585587SobrienPermission to use, copy, modify, and distribute this software and 685587Sobrienits documentation for any purpose and without fee is hereby 785587Sobriengranted, provided that the above copyright notice appear in all 885587Sobriencopies and that both that the copyright notice and this 985587Sobrienpermission notice and warranty disclaimer appear in supporting 1085587Sobriendocumentation, and that the name Lucent Technologies or any of 1185587Sobrienits entities not be used in advertising or publicity pertaining 1285587Sobriento distribution of the software without specific, written prior 1385587Sobrienpermission. 1485587Sobrien 1585587SobrienLUCENT DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, 1685587SobrienINCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. 1785587SobrienIN NO EVENT SHALL LUCENT OR ANY OF ITS ENTITIES BE LIABLE FOR ANY 1885587SobrienSPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 1985587SobrienWHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER 2085587SobrienIN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, 2185587SobrienARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF 2285587SobrienTHIS SOFTWARE. 2385587Sobrien****************************************************************/ 2485587Sobrien 2585587SobrienThis file lists all bug fixes, changes, etc., made since the AWK book 2685587Sobrienwas sent to the printers in August, 1987. 2785587Sobrien 28244988SdelphijDec 20, 2012: 29244988Sdelphij fiddled makefile to get correct yacc and bison flags. pick yacc 30244988Sdelphij (linux) or bison (mac) as necessary. 31244988Sdelphij 32244988Sdelphij added __attribute__((__noreturn__)) to a couple of lines in 33244988Sdelphij proto.h, to silence someone's enthusiastic checker. 34244988Sdelphij 35244988Sdelphij fixed obscure call by value bug in split(a[1],a) reported on 36244988Sdelphij 9fans. the management of temporary values is just a mess; i 37244988Sdelphij took a shortcut by making an extra string copy. thanks 38244988Sdelphij to paul patience and arnold robbins for passing it on and for 39244988Sdelphij proposed patches. 40244988Sdelphij 41244988Sdelphij tiny fiddle in setfval to eliminate -0 results in T.expr, which 42244988Sdelphij has irritated me for 20+ years. 43244988Sdelphij 44224776SruAug 10, 2011: 45224776Sru another fix to avoid core dump with delete(ARGV); again, many thanks 46224776Sru to ruslan ermilov. 47224776Sru 48224731SruAug 7, 2011: 49224731Sru split(s, a, //) now behaves the same as split(s, a, "") 50224731Sru 51224731SruJun 12, 2011: 52224731Sru /pat/, \n /pat/ {...} is now legal, though bad style to use. 53224731Sru 54224731Sru added checks to new -v code that permits -vnospace; thanks to 55224731Sru ruslan ermilov for spotting this and providing the patch. 56224731Sru 57224731Sru removed fixed limit on number of open files; thanks to aleksey 58224731Sru cheusov and christos zoulos. 59224731Sru 60224731Sru fixed day 1 bug that resurrected deleted elements of ARGV when 61224731Sru used as filenames (in lib.c). 62224731Sru 63224731Sru minor type fiddles to make gcc -Wall -pedantic happier (but not 64224731Sru totally so); turned on -fno-strict-aliasing in makefile. 65224731Sru 66221533SruMay 6, 2011: 67221533Sru added #ifdef for isblank. 68221533Sru now allows -ffoo as well as -f foo arguments. 69221533Sru (thanks, ruslan) 70221533Sru 71221381SruMay 1, 2011: 72221381Sru after advice from todd miller, kevin lo, ruslan ermilov, 73221381Sru and arnold robbins, changed srand() to return the previous 74221381Sru seed (which is 1 on the first call of srand). the seed is 75221381Sru an Awkfloat internally though converted to unsigned int to 76221381Sru pass to the library srand(). thanks, everyone. 77221381Sru 78221381Sru fixed a subtle (and i hope low-probability) overflow error 79221381Sru in fldbld, by adding space for one extra \0. thanks to 80221381Sru robert bassett for spotting this one and providing a fix. 81221381Sru 82221381Sru removed the files related to compilation on windows. i no 83221381Sru longer have anything like a current windows environment, so 84221381Sru i can't test any of it. 85221381Sru 86221381SruMay 23, 2010: 87221381Sru fixed long-standing overflow bug in run.c; many thanks to 88221381Sru nelson beebe for spotting it and providing the fix. 89221381Sru 90221381Sru fixed bug that didn't parse -vd=1 properly; thanks to santiago 91221381Sru vila for spotting it. 92221381Sru 93221381SruFeb 8, 2010: 94221381Sru i give up. replaced isblank with isspace in b.c; there are 95221381Sru no consistent header files. 96221381Sru 97201951SruNov 26, 2009: 98201951Sru fixed a long-standing issue with when FS takes effect. a 99201951Sru change to FS is now noticed immediately for subsequent splits. 100201951Sru 101201951Sru changed the name getline() to awkgetline() to avoid yet another 102201951Sru name conflict somewhere. 103201951Sru 104201951SruFeb 11, 2009: 105201951Sru temporarily for now defined HAS_ISBLANK, since that seems to 106201951Sru be the best way through the thicket. isblank arrived in C99, 107201951Sru but seems to be arriving at different systems at different 108201951Sru times. 109201951Sru 110201951SruOct 8, 2008: 111201951Sru fixed typo in b.c that set tmpvec wrongly. no one had ever 112201951Sru run into the problem, apparently. thanks to alistair crooks. 113201951Sru 114172958SobrienOct 23, 2007: 115172958Sobrien minor fix in lib.c: increase inputFS to 100, change malloc 116172958Sobrien for fields to n+1. 117172958Sobrien 118172958Sobrien fixed memory fault caused by out of order test in setsval. 119172958Sobrien 120172958Sobrien thanks to david o'brien, freebsd, for both fixes. 121172958Sobrien 122170331SrafanMay 1, 2007: 123170331Srafan fiddle in makefile to fix for BSD make; thanks to igor sobrado. 124170331Srafan 125170331SrafanMar 31, 2007: 126170331Srafan fixed some null pointer refs calling adjbuf. 127170331Srafan 128170331SrafanFeb 21, 2007: 129170331Srafan fixed a bug in matching the null RE in sub and gsub. thanks to al aho 130170331Srafan who actually did the fix (in b.c), and to wolfgang seeberg for finding 131170331Srafan it and providing a very compact test case. 132170331Srafan 133170331Srafan fixed quotation in b.c; thanks to Hal Pratt and the Princeton Dante 134170331Srafan Project. 135170331Srafan 136170331Srafan removed some no-effect asserts in run.c. 137170331Srafan 138170331Srafan fiddled maketab.c to not complain about bison-generated values. 139170331Srafan 140170331Srafan removed the obsolete -V argument; fixed --version to print the 141170331Srafan version and exit. 142170331Srafan 143170331Srafan fixed wording and an outright error in the usage message; thanks to igor 144170331Srafan sobrado and jason mcintyre. 145170331Srafan 146170331Srafan fixed a bug in -d that caused core dump if no program followed. 147170331Srafan 148170331SrafanJan 1, 2007: 149170331Srafan dropped mac.code from makefile; there are few non-MacOSX 150170331Srafan mac's these days. 151170331Srafan 152170331SrafanJan 17, 2006: 153170331Srafan system() not flagged as unsafe in the unadvertised -safe option. 154170331Srafan found it while enhancing tests before shipping the ;login: article. 155170331Srafan practice what you preach. 156170331Srafan 157170331Srafan removed the 9-years-obsolete -mr and -mf flags. 158170331Srafan 159170331Srafan added -version and --version options. 160170331Srafan 161170331Srafan core dump on linux with BEGIN {nextfile}, now fixed. 162170331Srafan 163170331Srafan removed some #ifdef's in run.c and lex.c that appear to no 164170331Srafan longer be necessary. 165170331Srafan 166146299SruApr 24, 2005: 167146299Sru modified lib.c so that values of $0 et al are preserved in the END 168146299Sru block, apparently as required by posix. thanks to havard eidnes 169146299Sru for the report and code. 170146299Sru 171146299SruJan 14, 2005: 172146299Sru fixed infinite loop in parsing, originally found by brian tsang. 173146299Sru thanks to arnold robbins for a suggestion that started me 174146299Sru rethinking it. 175146299Sru 176146299SruDec 31, 2004: 177146299Sru prevent overflow of -f array in main, head off potential error in 178146299Sru call of SYNTAX(), test malloc return in lib.c, all with thanks to 179146299Sru todd miller. 180146299Sru 181146299SruDec 22, 2004: 182146299Sru cranked up size of NCHARS; coverity thinks it can be overrun with 183146299Sru smaller size, and i think that's right. added some assertions to b.c 184146299Sru to catch places where it might overrun. the RE code is still fragile. 185146299Sru 186146299SruDec 5, 2004: 187146299Sru fixed a couple of overflow problems with ridiculous field numbers: 188146299Sru e.g., print $(2^32-1). thanks to ruslan ermilov, giorgos keramidas 189146299Sru and david o'brien at freebsd.org for patches. this really should 190146299Sru be re-done from scratch. 191146299Sru 192146299SruNov 21, 2004: 193146299Sru fixed another 25-year-old RE bug, in split. it's another failure 194146299Sru to (re-)initialize. thanks to steve fisher for spotting this and 195146299Sru providing a good test case. 196146299Sru 197125601SruNov 22, 2003: 198125601Sru fixed a bug in regular expressions that dates (so help me) from 1977; 199125601Sru it's been there from the beginning. an anchored longest match that 200125601Sru was longer than the number of states triggered a failure to initialize 201125601Sru the machine properly. many thanks to moinak ghosh for not only finding 202125601Sru this one but for providing a fix, in some of the most mysterious 203125601Sru code known to man. 204125601Sru 205125601Sru fixed a storage leak in call() that appears to have been there since 206125601Sru 1983 or so -- a function without an explicit return that assigns a 207125601Sru string to a parameter leaked a Cell. thanks to moinak ghosh for 208125601Sru spotting this very subtle one. 209125601Sru 210125601SruJul 31, 2003: 211125601Sru fixed, thanks to andrey chernov and ruslan ermilov, a bug in lex.c 212125601Sru that mis-handled the character 255 in input. (it was being compared 213125601Sru to EOF with a signed comparison.) 214125601Sru 215118194SruJul 29, 2003: 216118194Sru fixed (i think) the long-standing botch that included the beginning of 217118194Sru line state ^ for RE's in the set of valid characters; this led to a 218118194Sru variety of odd problems, including failure to properly match certain 219118194Sru regular expressions in non-US locales. thanks to ruslan for keeping 220118194Sru at this one. 221118194Sru 222118194SruJul 28, 2003: 223118194Sru n-th try at getting internationalization right, with thanks to volker 224118194Sru kiefel, arnold robbins and ruslan ermilov for advice, though they 225118194Sru should not be blamed for the outcome. according to posix, "." is the 226118194Sru radix character in programs and command line arguments regardless of 227118194Sru the locale; otherwise, the locale should prevail for input and output 228118194Sru of numbers. so it's intended to work that way. 229118194Sru 230118194Sru i have rescinded the attempt to use strcoll in expanding shorthands in 231118194Sru regular expressions (cclenter). its properties are much too 232118194Sru surprising; for example [a-c] matches aAbBc in locale en_US but abBcC 233118194Sru in locale fr_CA. i can see how this might arise by implementation 234118194Sru but i cannot explain it to a human user. (this behavior can be seen 235118194Sru in gawk as well; we're leaning on the same library.) 236118194Sru 237118194Sru the issue appears to be that strcoll is meant for sorting, where 238118194Sru merging upper and lower case may make sense (though note that unix 239118194Sru sort does not do this by default either). it is not appropriate 240118194Sru for regular expressions, where the goal is to match specific 241118194Sru patterns of characters. in any case, the notations [:lower:], etc., 242118194Sru are available in awk, and they are more likely to work correctly in 243118194Sru most locales. 244118194Sru 245118194Sru a moratorium is hereby declared on internationalization changes. 246118194Sru i apologize to friends and colleagues in other parts of the world. 247118194Sru i would truly like to get this "right", but i don't know what 248118194Sru that is, and i do not want to keep making changes until it's clear. 249118194Sru 250118194SruJul 4, 2003: 251118194Sru fixed bug that permitted non-terminated RE, as in "awk /x". 252118194Sru 253118194SruJun 1, 2003: 254118194Sru subtle change to split: if source is empty, number of elems 255118194Sru is always 0 and the array is not set. 256118194Sru 257118194SruMar 21, 2003: 258118194Sru added some parens to isblank, in another attempt to make things 259118194Sru internationally portable. 260118194Sru 261112336SobrienMar 14, 2003: 262112336Sobrien the internationalization changes, somewhat modified, are now 263112336Sobrien reinstated. in theory awk will now do character comparisons 264112336Sobrien and case conversions in national language, but "." will always 265112336Sobrien be the decimal point separator on input and output regardless 266112336Sobrien of national language. isblank(){} has an #ifndef. 267112336Sobrien 268112336Sobrien this no longer compiles on windows: LC_MESSAGES isn't defined 269112336Sobrien in vc6++. 270112336Sobrien 271112336Sobrien fixed subtle behavior in field and record splitting: if FS is 272112336Sobrien a single character and RS is not empty, \n is NOT a separator. 273112336Sobrien this tortuous reading is found in the awk book; behavior now 274112336Sobrien matches gawk and mawk. 275112336Sobrien 276108072SobrienDec 13, 2002: 277108072Sobrien for the moment, the internationalization changes of nov 29 are 278108072Sobrien rolled back -- programs like x = 1.2 don't work in some locales, 279108072Sobrien because the parser is expecting x = 1,2. until i understand this 280108072Sobrien better, this will have to wait. 281108072Sobrien 282107806SobrienNov 29, 2002: 283107806Sobrien modified b.c (with tiny changes in main and run) to support 284107806Sobrien locales, using strcoll and iswhatever tests for posix character 285107806Sobrien classes. thanks to ruslan ermilov (ru@freebsd.org) for code. 286107806Sobrien the function isblank doesn't seem to have propagated to any 287107806Sobrien header file near me, so it's there explicitly. not properly 288107806Sobrien tested on non-ascii character sets by me. 289107806Sobrien 290107806SobrienJun 28, 2002: 291107806Sobrien modified run/format() and tran/getsval() to do a slightly better 292107806Sobrien job on using OFMT for output from print and CONVFMT for other 293107806Sobrien number->string conversions, as promised by posix and done by 294107806Sobrien gawk and mawk. there are still places where it doesn't work 295107806Sobrien right if CONVFMT is changed; by then the STR attribute of the 296107806Sobrien variable has been irrevocably set. thanks to arnold robbins for 297107806Sobrien code and examples. 298107806Sobrien 299107806Sobrien fixed subtle bug in format that could get core dump. thanks to 300107806Sobrien Jaromir Dolecek <jdolecek@NetBSD.org> for finding and fixing. 301107806Sobrien minor cleanup in run.c / format() at the same time. 302107806Sobrien 303107806Sobrien added some tests for null pointers to debugging printf's, which 304107806Sobrien were never intended for external consumption. thanks to dave 305107806Sobrien kerns (dkerns@lucent.com) for pointing this out. 306107806Sobrien 307107806Sobrien GNU compatibility: an empty regexp matches anything (thanks to 308107806Sobrien dag-erling smorgrav, des@ofug.org). subject to reversion if 309107806Sobrien this does more harm than good. 310107806Sobrien 311107806Sobrien pervasive small changes to make things more const-correct, as 312107806Sobrien reported by gcc's -Wwrite-strings. as it says in the gcc manual, 313107806Sobrien this may be more nuisance than useful. provoked by a suggestion 314107806Sobrien and code from arnaud desitter, arnaud@nimbus.geog.ox.ac.uk 315107806Sobrien 316107806Sobrien minor documentation changes to note that this now compiles out 317107806Sobrien of the box on Mac OS X. 318107806Sobrien 31990902SdesFeb 10, 2002: 32090902Sdes changed types in posix chars structure to quiet solaris cc. 32190902Sdes 32290902SdesJan 1, 2002: 32390902Sdes fflush() or fflush("") flushes all files and pipes. 32490902Sdes 32590902Sdes length(arrayname) returns number of elements; thanks to 32690902Sdes arnold robbins for suggestion. 32790902Sdes 32890902Sdes added a makefile.win to make it easier to build on windows. 32990902Sdes based on dan allen's buildwin.bat. 33090902Sdes 33190902SdesNov 16, 2001: 33290902Sdes added support for posix character class names like [:digit:], 33390902Sdes which are not exactly shorter than [0-9] and perhaps no more 33490902Sdes portable. thanks to dag-erling smorgrav for code. 33590902Sdes 33690902SdesFeb 16, 2001: 33790902Sdes removed -m option; no longer needed, and it was actually 33890902Sdes broken (noted thanks to volker kiefel). 33990902Sdes 34090902SdesFeb 10, 2001: 34190902Sdes fixed an appalling bug in gettok: any sequence of digits, +,-, E, e, 34290902Sdes and period was accepted as a valid number if it started with a period. 34390902Sdes this would never have happened with the lex version. 34490902Sdes 34590902Sdes other 1-character botches, now fixed, include a bare $ and a 34690902Sdes bare " at the end of the input. 34790902Sdes 34890902SdesFeb 7, 2001: 34990902Sdes more (const char *) casts in b.c and tran.c to silence warnings. 35090902Sdes 35185587SobrienNov 15, 2000: 35285587Sobrien fixed a bug introduced in august 1997 that caused expressions 35385587Sobrien like $f[1] to be syntax errors. thanks to arnold robbins for 35485587Sobrien noticing this and providing a fix. 35585587Sobrien 35685587SobrienOct 30, 2000: 35785587Sobrien fixed some nextfile bugs: not handling all cases. thanks to 35885587Sobrien arnold robbins for pointing this out. new regressions added. 35985587Sobrien 36085587Sobrien close() is now a function. it returns whatever the library 36185587Sobrien fclose returns, and -1 for closing a file or pipe that wasn't 36285587Sobrien opened. 36385587Sobrien 36485587SobrienSep 24, 2000: 36585587Sobrien permit \n explicitly in character classes; won't work right 36685587Sobrien if comes in as "[\n]" but ok as /[\n]/, because of multiple 36785587Sobrien processing of \'s. thanks to arnold robbins. 36885587Sobrien 36985587SobrienJuly 5, 2000: 37085587Sobrien minor fiddles in tran.c to keep compilers happy about uschar. 37185587Sobrien thanks to norman wilson. 37285587Sobrien 37385587SobrienMay 25, 2000: 37485587Sobrien yet another attempt at making 8-bit input work, with another 37585587Sobrien band-aid in b.c (member()), and some (uschar) casts to head 37685587Sobrien off potential errors in subscripts (like isdigit). also 37785587Sobrien changed HAT to NCHARS-2. thanks again to santiago vila. 37885587Sobrien 37985587Sobrien changed maketab.c to ignore apparently out of range definitions 38085587Sobrien instead of halting; new freeBSD generates one. thanks to 38185587Sobrien jon snader <jsnader@ix.netcom.com> for pointing out the problem. 38285587Sobrien 38385587SobrienMay 2, 2000: 38485587Sobrien fixed an 8-bit problem in b.c by making several char*'s into 38585587Sobrien unsigned char*'s. not clear i have them all yet. thanks to 38685587Sobrien Santiago Vila <sanvila@unex.es> for the bug report. 38785587Sobrien 38885587SobrienApr 21, 2000: 38985587Sobrien finally found and fixed a memory leak in function call; it's 39085587Sobrien been there since functions were added ~1983. thanks to 39185587Sobrien jon bentley for the test case that found it. 39285587Sobrien 39385587Sobrien added test in envinit to catch environment "variables" with 394146299Sru names beginning with '='; thanks to Berend Hasselman. 39585587Sobrien 39685587SobrienJul 28, 1999: 39785587Sobrien added test in defn() to catch function foo(foo), which 39885587Sobrien otherwise recurses until core dump. thanks to arnold 39985587Sobrien robbins for noticing this. 40085587Sobrien 40185587SobrienJun 20, 1999: 40285587Sobrien added *bp in gettok in lex.c; appears possible to exit function 40385587Sobrien without terminating the string. thanks to russ cox. 40485587Sobrien 40585587SobrienJun 2, 1999: 40685587Sobrien added function stdinit() to run to initialize files[] array, 40785587Sobrien in case stdin, etc., are not constants; some compilers care. 40885587Sobrien 40985587SobrienMay 10, 1999: 41085587Sobrien replaced the ERROR ... FATAL, etc., macros with functions 41185587Sobrien based on vprintf, to avoid problems caused by overrunning 41285587Sobrien fixed-size errbuf array. thanks to ralph corderoy for the 41385587Sobrien impetus, and for pointing out a string termination bug in 41485587Sobrien qstring as well. 41585587Sobrien 41685587SobrienApr 21, 1999: 41785587Sobrien fixed bug that caused occasional core dumps with commandline 41885587Sobrien variable with value ending in \. (thanks to nelson beebe for 41985587Sobrien the test case.) 42085587Sobrien 42185587SobrienApr 16, 1999: 42285587Sobrien with code kindly provided by Bruce Lilly, awk now parses 42385587Sobrien /=/ and similar constructs more sensibly in more places. 42485587Sobrien Bruce also provided some helpful test cases. 42585587Sobrien 42685587SobrienApr 5, 1999: 42785587Sobrien changed true/false to True/False in run.c to make it 42885587Sobrien easier to compile with C++. Added some casts on malloc 42985587Sobrien and realloc to be honest about casts; ditto. changed 43085587Sobrien ltype int to long in struct rrow to reduce some 64-bit 43185587Sobrien complaints; other changes scattered throughout for the 43285587Sobrien same purpose. thanks to Nelson Beebe for these portability 43385587Sobrien improvements. 43485587Sobrien 43585587Sobrien removed some horrible pointer-int casting in b.c and elsewhere 43685587Sobrien by adding ptoi and itonp to localize the casts, which are 43785587Sobrien all benign. fixed one incipient bug that showed up on sgi 43885587Sobrien in 64-bit mode. 43985587Sobrien 44085587Sobrien reset lineno for new source file; include filename in error 44185587Sobrien message. also fixed line number error in continuation lines. 44285587Sobrien (thanks to Nelson Beebe for both of these.) 44385587Sobrien 44485587SobrienMar 24, 1999: 44585587Sobrien Nelson Beebe notes that irix 5.3 yacc dies with a bogus 44685587Sobrien error; use a newer version or switch to bison, since sgi 44785587Sobrien is unlikely to fix it. 44885587Sobrien 44985587SobrienMar 5, 1999: 45085587Sobrien changed isnumber to is_number to avoid the problem caused by 45185587Sobrien versions of ctype.h that include the name isnumber. 45285587Sobrien 45385587Sobrien distribution now includes a script for building on a Mac, 45485587Sobrien thanks to Dan Allen. 45585587Sobrien 45685587SobrienFeb 20, 1999: 45785587Sobrien fixed memory leaks in run.c (call) and tran.c (setfval). 45885587Sobrien thanks to Stephen Nutt for finding these and providing the fixes. 45985587Sobrien 46085587SobrienJan 13, 1999: 46185587Sobrien replaced srand argument by (unsigned int) in run.c; 46285587Sobrien avoids problem on Mac and potentially on Unix & Windows. 46385587Sobrien thanks to Dan Allen. 46485587Sobrien 46585587Sobrien added a few (int) casts to silence useless compiler warnings. 46685587Sobrien e.g., errorflag= in run.c jump(). 46785587Sobrien 46885587Sobrien added proctab.c to the bundle outout; one less thing 46985587Sobrien to have to compile out of the box. 47085587Sobrien 47185587Sobrien added calls to _popen and _pclose to the win95 stub for 47285587Sobrien pipes (thanks to Steve Adams for this helpful suggestion). 47385587Sobrien seems to work, though properties are not well understood 47485587Sobrien by me, and it appears that under some circumstances the 47585587Sobrien pipe output is truncated. Be careful. 47685587Sobrien 47785587SobrienOct 19, 1998: 47885587Sobrien fixed a couple of bugs in getrec: could fail to update $0 47985587Sobrien after a getline var; because inputFS wasn't initialized, 48085587Sobrien could split $0 on every character, a misleading diversion. 48185587Sobrien 48285587Sobrien fixed caching bug in makedfa: LRU was actually removing 48385587Sobrien least often used. 48485587Sobrien 48585587Sobrien thanks to ross ridge for finding these, and for providing 48685587Sobrien great bug reports. 48785587Sobrien 48885587SobrienMay 12, 1998: 48985587Sobrien fixed potential bug in readrec: might fail to update record 49085587Sobrien pointer after growing. thanks to dan levy for spotting this 49185587Sobrien and suggesting the fix. 49285587Sobrien 49385587SobrienMar 12, 1998: 49485587Sobrien added -V to print version number and die. 49585587Sobrien 49685587SobrienFeb 11, 1998: 49785587Sobrien subtle silent bug in lex.c: if the program ended with a number 49885587Sobrien longer than 1 digit, part of the input would be pushed back and 49985587Sobrien parsed again because token buffer wasn't terminated right. 50085587Sobrien example: awk 'length($0) > 10'. blush. at least i found it 50185587Sobrien myself. 50285587Sobrien 50385587SobrienAug 31, 1997: 50485587Sobrien s/adelete/awkdelete/: SGI uses this in malloc.h. 50585587Sobrien thanks to nelson beebe for pointing this one out. 50685587Sobrien 50785587SobrienAug 21, 1997: 50885587Sobrien fixed some bugs in sub and gsub when replacement includes \\. 50985587Sobrien this is a dark, horrible corner, but at least now i believe that 51085587Sobrien the behavior is the same as gawk and the intended posix standard. 51185587Sobrien thanks to arnold robbins for advice here. 51285587Sobrien 51385587SobrienAug 9, 1997: 51485587Sobrien somewhat regretfully, replaced the ancient lex-based lexical 51585587Sobrien analyzer with one written in C. it's longer, generates less code, 51685587Sobrien and more portable; the old one depended too much on mysterious 51785587Sobrien properties of lex that were not preserved in other environments. 51885587Sobrien in theory these recognize the same language. 51985587Sobrien 52085587Sobrien now using strtod to test whether a string is a number, instead of 52185587Sobrien the convoluted original function. should be more portable and 52285587Sobrien reliable if strtod is implemented right. 52385587Sobrien 52485587Sobrien removed now-pointless optimization in makefile that tries to avoid 52585587Sobrien recompilation when awkgram.y is changed but symbols are not. 52685587Sobrien 52785587Sobrien removed most fixed-size arrays, though a handful remain, some 52885587Sobrien of which are unchecked. you have been warned. 52985587Sobrien 53085587SobrienAug 4, 1997: 53185587Sobrien with some trepidation, replaced the ancient code that managed 53285587Sobrien fields and $0 in fixed-size arrays with arrays that grow on 53385587Sobrien demand. there is still some tension between trying to make this 53485587Sobrien run fast and making it clean; not sure it's right yet. 53585587Sobrien 53685587Sobrien the ill-conceived -mr and -mf arguments are now useful only 53785587Sobrien for debugging. previous dynamic string code removed. 53885587Sobrien 53985587Sobrien numerous other minor cleanups along the way. 54085587Sobrien 54185587SobrienJul 30, 1997: 54285587Sobrien using code provided by dan levy (to whom profuse thanks), replaced 54385587Sobrien fixed-size arrays and awkward kludges by a fairly uniform mechanism 54485587Sobrien to grow arrays as needed for printf, sub, gsub, etc. 54585587Sobrien 54685587SobrienJul 23, 1997: 54785587Sobrien falling off the end of a function returns "" and 0, not 0. 54885587Sobrien thanks to arnold robbins. 54985587Sobrien 55085587SobrienJun 17, 1997: 55185587Sobrien replaced several fixed-size arrays by dynamically-created ones 55285587Sobrien in run.c; added overflow tests to some previously unchecked cases. 55385587Sobrien getline, toupper, tolower. 55485587Sobrien 55585587Sobrien getline code is still broken in that recursive calls may wind 55685587Sobrien up using the same space. [fixed later] 55785587Sobrien 55885587Sobrien increased RECSIZE to 8192 to push problems further over the horizon. 55985587Sobrien 56085587Sobrien added \r to \n as input line separator for programs, not data. 56185587Sobrien damn CRLFs. 56285587Sobrien 56385587Sobrien modified format() to permit explicit printf("%c", 0) to include 56485587Sobrien a null byte in output. thanks to ken stailey for the fix. 56585587Sobrien 56685587Sobrien added a "-safe" argument that disables file output (print >, 56785587Sobrien print >>), process creation (cmd|getline, print |, system), and 56885587Sobrien access to the environment (ENVIRON). this is a first approximation 56985587Sobrien to a "safe" version of awk, but don't rely on it too much. thanks 57085587Sobrien to joan feigenbaum and matt blaze for the inspiration long ago. 57185587Sobrien 57285587SobrienJul 8, 1996: 57385587Sobrien fixed long-standing bug in sub, gsub(/a/, "\\\\&"); thanks to 57485587Sobrien ralph corderoy. 57585587Sobrien 57685587SobrienJun 29, 1996: 57785587Sobrien fixed awful bug in new field splitting; didn't get all the places 57885587Sobrien where input was done. 57985587Sobrien 58085587SobrienJun 28, 1996: 58185587Sobrien changed field-splitting to conform to posix definition: fields are 58285587Sobrien split using the value of FS at the time of input; it used to be 58385587Sobrien the value when the field or NF was first referred to, a much less 58485587Sobrien predictable definition. thanks to arnold robbins for encouragement 58585587Sobrien to do the right thing. 58685587Sobrien 58785587SobrienMay 28, 1996: 58885587Sobrien fixed appalling but apparently unimportant bug in parsing octal 58985587Sobrien numbers in reg exprs. 59085587Sobrien 59185587Sobrien explicit hex in reg exprs now limited to 2 chars: \xa, \xaa. 59285587Sobrien 59385587SobrienMay 27, 1996: 59485587Sobrien cleaned up some declarations so gcc -Wall is now almost silent. 59585587Sobrien 59685587Sobrien makefile now includes backup copies of ytab.c and lexyy.c in case 59785587Sobrien one makes before looking; it also avoids recreating lexyy.c unless 59885587Sobrien really needed. 59985587Sobrien 60085587Sobrien s/aprintf/awkprint, s/asprintf/awksprintf/ to avoid some name clashes 60185587Sobrien with unwisely-written header files. 60285587Sobrien 60385587Sobrien thanks to jeffrey friedl for several of these. 60485587Sobrien 60585587SobrienMay 26, 1996: 60685587Sobrien an attempt to rationalize the (unsigned) char issue. almost all 60785587Sobrien instances of unsigned char have been removed; the handful of places 60885587Sobrien in b.c where chars are used as table indices have been hand-crafted. 60985587Sobrien added some latin-1 tests to the regression, but i'm not confident; 61085587Sobrien none of my compilers seem to care much. thanks to nelson beebe for 61185587Sobrien pointing out some others that do care. 61285587Sobrien 61385587SobrienMay 2, 1996: 61485587Sobrien removed all register declarations. 61585587Sobrien 61685587Sobrien enhanced split(), as in gawk, etc: split(s, a, "") splits s into 61785587Sobrien a[1]...a[length(s)] with each character a single element. 61885587Sobrien 61985587Sobrien made the same changes for field-splitting if FS is "". 62085587Sobrien 62185587Sobrien added nextfile, as in gawk: causes immediate advance to next 62285587Sobrien input file. (thanks to arnold robbins for inspiration and code). 62385587Sobrien 62485587Sobrien small fixes to regexpr code: can now handle []], [[], and 62585587Sobrien variants; [] is now a syntax error, rather than matching 62685587Sobrien everything; [z-a] is now empty, not z. far from complete 62785587Sobrien or correct, however. (thanks to jeffrey friedl for pointing out 62885587Sobrien some awful behaviors.) 62985587Sobrien 63085587SobrienApr 29, 1996: 631146299Sru replaced uchar by uschar everywhere; apparently some compilers 63285587Sobrien usurp this name and this causes conflicts. 63385587Sobrien 63485587Sobrien fixed call to time in run.c (bltin); arg is time_t *. 63585587Sobrien 63685587Sobrien replaced horrible pointer/long punning in b.c by a legitimate 63785587Sobrien union. should be safer on 64-bit machines and cleaner everywhere. 63885587Sobrien (thanks to nelson beebe for pointing out some of these problems.) 63985587Sobrien 64085587Sobrien replaced nested comments by #if 0...#endif in run.c, lib.c. 64185587Sobrien 64285587Sobrien removed getsval, setsval, execute macros from run.c and lib.c. 64385587Sobrien machines are 100x faster than they were when these macros were 64485587Sobrien first used. 64585587Sobrien 64685587Sobrien revised filenames: awk.g.y => awkgram.y, awk.lx.l => awklex.l, 64785587Sobrien y.tab.[ch] => ytab.[ch], lex.yy.c => lexyy.c, all in the aid of 64885587Sobrien portability to nameless systems. 64985587Sobrien 65085587Sobrien "make bundle" now includes yacc and lex output files for recipients 65185587Sobrien who don't have yacc or lex. 65285587Sobrien 65385587SobrienAug 15, 1995: 65485587Sobrien initialized Cells in setsymtab more carefully; some fields 65585587Sobrien were not set. (thanks to purify, all of whose complaints i 65685587Sobrien think i now understand.) 65785587Sobrien 65885587Sobrien fixed at least one error in gsub that looked at -1-th element 65985587Sobrien of an array when substituting for a null match (e.g., $). 66085587Sobrien 66185587Sobrien delete arrayname is now legal; it clears the elements but leaves 66285587Sobrien the array, which may not be the right behavior. 66385587Sobrien 66485587Sobrien modified makefile: my current make can't cope with the test used 66585587Sobrien to avoid unnecessary yacc invocations. 66685587Sobrien 66785587SobrienJul 17, 1995: 66885587Sobrien added dynamically growing strings to awk.lx.l and b.c 66985587Sobrien to permit regular expressions to be much bigger. 67085587Sobrien the state arrays can still overflow. 67185587Sobrien 67285587SobrienAug 24, 1994: 67385587Sobrien detect duplicate arguments in function definitions (mdm). 67485587Sobrien 67585587SobrienMay 11, 1994: 67685587Sobrien trivial fix to printf to limit string size in sub(). 67785587Sobrien 67885587SobrienApr 22, 1994: 67985587Sobrien fixed yet another subtle self-assignment problem: 68085587Sobrien $1 = $2; $1 = $1 clobbered $1. 68185587Sobrien 68285587Sobrien Regression tests now use private echo, to avoid quoting problems. 68385587Sobrien 68485587SobrienFeb 2, 1994: 68585587Sobrien changed error() to print line number as %d, not %g. 68685587Sobrien 68785587SobrienJul 23, 1993: 68885587Sobrien cosmetic changes: increased sizes of some arrays, 68985587Sobrien reworded some error messages. 69085587Sobrien 69185587Sobrien added CONVFMT as in posix (just replaced OFMT in getsval) 69285587Sobrien 69385587Sobrien FILENAME is now "" until the first thing that causes a file 69485587Sobrien to be opened. 69585587Sobrien 69685587SobrienNov 28, 1992: 69785587Sobrien deleted yyunput and yyoutput from proto.h; 69885587Sobrien different versions of lex give these different declarations. 69985587Sobrien 70085587SobrienMay 31, 1992: 70185587Sobrien added -mr N and -mf N options: more record and fields. 70285587Sobrien these really ought to adjust automatically. 70385587Sobrien 70485587Sobrien cleaned up some error messages; "out of space" now means 70585587Sobrien malloc returned NULL in all cases. 70685587Sobrien 70785587Sobrien changed rehash so that if it runs out, it just returns; 70885587Sobrien things will continue to run slow, but maybe a bit longer. 70985587Sobrien 71085587SobrienApr 24, 1992: 71185587Sobrien remove redundant close of stdin when using -f -. 71285587Sobrien 71385587Sobrien got rid of core dump with -d; awk -d just prints date. 71485587Sobrien 71585587SobrienApr 12, 1992: 71685587Sobrien added explicit check for /dev/std(in,out,err) in redirection. 71785587Sobrien unlike gawk, no /dev/fd/n yet. 71885587Sobrien 71985587Sobrien added (file/pipe) builtin. hard to test satisfactorily. 72085587Sobrien not posix. 72185587Sobrien 72285587SobrienFeb 20, 1992: 72385587Sobrien recompile after abortive changes; should be unchanged. 72485587Sobrien 72585587SobrienDec 2, 1991: 72685587Sobrien die-casting time: converted to ansi C, installed that. 72785587Sobrien 72885587SobrienNov 30, 1991: 72985587Sobrien fixed storage leak in freefa, failing to recover [N]CCL. 73085587Sobrien thanks to Bill Jones (jones@cs.usask.ca) 73185587Sobrien 73285587SobrienNov 19, 1991: 73385587Sobrien use RAND_MAX instead of literal in builtin(). 73485587Sobrien 73585587SobrienNov 12, 1991: 73685587Sobrien cranked up some fixed-size arrays in b.c, and added a test for 73785587Sobrien overflow in penter. thanks to mark larsen. 73885587Sobrien 73985587SobrienSep 24, 1991: 74085587Sobrien increased buffer in gsub. a very crude fix to a general problem. 74185587Sobrien and again on Sep 26. 74285587Sobrien 74385587SobrienAug 18, 1991: 74485587Sobrien enforce variable name syntax for commandline variables: has to 74585587Sobrien start with letter or _. 74685587Sobrien 74785587SobrienJul 27, 1991: 74885587Sobrien allow newline after ; in for statements. 74985587Sobrien 75085587SobrienJul 21, 1991: 75185587Sobrien fixed so that in self-assignment like $1=$1, side effects 75285587Sobrien like recomputing $0 take place. (this is getting subtle.) 75385587Sobrien 75485587SobrienJun 30, 1991: 75585587Sobrien better test for detecting too-long output record. 75685587Sobrien 75785587SobrienJun 2, 1991: 75885587Sobrien better defense against very long printf strings. 75985587Sobrien made break and continue illegal outside of loops. 76085587Sobrien 76185587SobrienMay 13, 1991: 76285587Sobrien removed extra arg on gettemp, tempfree. minor error message rewording. 76385587Sobrien 76485587SobrienMay 6, 1991: 76585587Sobrien fixed silly bug in hex parsing in hexstr(). 76685587Sobrien removed an apparently unnecessary test in isnumber(). 76785587Sobrien warn about weird printf conversions. 76885587Sobrien fixed unchecked array overwrite in relex(). 76985587Sobrien 77085587Sobrien changed for (i in array) to access elements in sorted order. 77185587Sobrien then unchanged it -- it really does run slower in too many cases. 77285587Sobrien left the code in place, commented out. 77385587Sobrien 77485587SobrienFeb 10, 1991: 77585587Sobrien check error status on all writes, to avoid banging on full disks. 77685587Sobrien 77785587SobrienJan 28, 1991: 77885587Sobrien awk -f - reads the program from stdin. 77985587Sobrien 78085587SobrienJan 11, 1991: 78185587Sobrien failed to set numeric state on $0 in cmd|getline context in run.c. 78285587Sobrien 78385587SobrienNov 2, 1990: 78485587Sobrien fixed sleazy test for integrality in getsval; use modf. 78585587Sobrien 78685587SobrienOct 29, 1990: 78785587Sobrien fixed sleazy buggy code in lib.c that looked (incorrectly) for 78885587Sobrien too long input lines. 78985587Sobrien 79085587SobrienOct 14, 1990: 79185587Sobrien fixed the bug on p. 198 in which it couldn't deduce that an 79285587Sobrien argument was an array in some contexts. replaced the error 79385587Sobrien message in intest() by code that damn well makes it an array. 79485587Sobrien 79585587SobrienOct 8, 1990: 79685587Sobrien fixed horrible bug: types and values were not preserved in 79785587Sobrien some kinds of self-assignment. (in assign().) 79885587Sobrien 79985587SobrienAug 24, 1990: 80085587Sobrien changed NCHARS to 256 to handle 8-bit characters in strings 80185587Sobrien presented to match(), etc. 80285587Sobrien 80385587SobrienJun 26, 1990: 80485587Sobrien changed struct rrow (awk.h) to use long instead of int for lval, 80585587Sobrien since cfoll() stores a pointer in it. now works better when int's 80685587Sobrien are smaller than pointers! 80785587Sobrien 80885587SobrienMay 6, 1990: 80985587Sobrien AVA fixed the grammar so that ! is uniformly of the same precedence as 81085587Sobrien unary + and -. This renders illegal some constructs like !x=y, which 81185587Sobrien now has to be parenthesized as !(x=y), and makes others work properly: 81285587Sobrien !x+y is (!x)+y, and x!y is x !y, not two pattern-action statements. 81385587Sobrien (These problems were pointed out by Bob Lenk of Posix.) 81485587Sobrien 81585587Sobrien Added \x to regular expressions (already in strings). 81685587Sobrien Limited octal to octal digits; \8 and \9 are not octal. 81785587Sobrien Centralized the code for parsing escapes in regular expressions. 81885587Sobrien Added a bunch of tests to T.re and T.sub to verify some of this. 81985587Sobrien 82085587SobrienFeb 9, 1990: 82185587Sobrien fixed null pointer dereference bug in main.c: -F[nothing]. sigh. 82285587Sobrien 82385587Sobrien restored srand behavior: it returns the current seed. 82485587Sobrien 82585587SobrienJan 18, 1990: 82685587Sobrien srand now returns previous seed value (0 to start). 82785587Sobrien 82885587SobrienJan 5, 1990: 82985587Sobrien fix potential problem in tran.c -- something was freed, 83085587Sobrien then used in freesymtab. 83185587Sobrien 83285587SobrienOct 18, 1989: 83385587Sobrien another try to get the max number of open files set with 83485587Sobrien relatively machine-independent code. 83585587Sobrien 83685587Sobrien small fix to input() in case of multiple reads after EOF. 83785587Sobrien 83885587SobrienOct 11, 1989: 83985587Sobrien FILENAME is now defined in the BEGIN block -- too many old 84085587Sobrien programs broke. 84185587Sobrien 84285587Sobrien "-" means stdin in getline as well as on the commandline. 84385587Sobrien 84485587Sobrien added a bunch of casts to the code to tell the truth about 84585587Sobrien char * vs. unsigned char *, a right royal pain. added a 84685587Sobrien setlocale call to the front of main, though probably no one 84785587Sobrien has it usefully implemented yet. 84885587Sobrien 84985587SobrienAug 24, 1989: 85085587Sobrien removed redundant relational tests against nullnode if parse 85185587Sobrien tree already had a relational at that point. 85285587Sobrien 85385587SobrienAug 11, 1989: 85485587Sobrien fixed bug: commandline variable assignment has to look like 85585587Sobrien var=something. (consider the man page for =, in file =.1) 85685587Sobrien 85785587Sobrien changed number of arguments to functions to static arrays 85885587Sobrien to avoid repeated malloc calls. 85985587Sobrien 86085587SobrienAug 2, 1989: 86185587Sobrien restored -F (space) separator 86285587Sobrien 86385587SobrienJul 30, 1989: 86485587Sobrien added -v x=1 y=2 ... for immediate commandline variable assignment; 86585587Sobrien done before the BEGIN block for sure. they have to precede the 86685587Sobrien program if the program is on the commandline. 86785587Sobrien Modified Aug 2 to require a separate -v for each assignment. 86885587Sobrien 86985587SobrienJul 10, 1989: 87085587Sobrien fixed ref-thru-zero bug in environment code in tran.c 87185587Sobrien 87285587SobrienJun 23, 1989: 87385587Sobrien add newline to usage message. 87485587Sobrien 87585587SobrienJun 14, 1989: 87685587Sobrien added some missing ansi printf conversion letters: %i %X %E %G. 87785587Sobrien no sensible meaning for h or L, so they may not do what one expects. 87885587Sobrien 87985587Sobrien made %* conversions work. 88085587Sobrien 88185587Sobrien changed x^y so that if n is a positive integer, it's done 88285587Sobrien by explicit multiplication, thus achieving maximum accuracy. 88385587Sobrien (this should be done by pow() but it seems not to be locally.) 88485587Sobrien done to x ^= y as well. 88585587Sobrien 88685587SobrienJun 4, 1989: 88785587Sobrien ENVIRON array contains environment: if shell variable V=thing, 88885587Sobrien ENVIRON["V"] is "thing" 88985587Sobrien 89085587Sobrien multiple -f arguments permitted. error reporting is naive. 89185587Sobrien (they were permitted before, but only the last was used.) 89285587Sobrien 89385587Sobrien fixed a really stupid botch in the debugging macro dprintf 89485587Sobrien 89585587Sobrien fixed order of evaluation of commandline assignments to match 89685587Sobrien what the book claims: an argument of the form x=e is evaluated 89785587Sobrien at the time it would have been opened if it were a filename (p 63). 89885587Sobrien this invalidates the suggested answer to ex 4-1 (p 195). 89985587Sobrien 90085587Sobrien removed some code that permitted -F (space) fieldseparator, 90185587Sobrien since it didn't quite work right anyway. (restored aug 2) 90285587Sobrien 90385587SobrienApr 27, 1989: 90485587Sobrien Line number now accumulated correctly for comment lines. 90585587Sobrien 90685587SobrienApr 26, 1989: 90785587Sobrien Debugging output now includes a version date, 90885587Sobrien if one compiles it into the source each time. 90985587Sobrien 91085587SobrienApr 9, 1989: 91185587Sobrien Changed grammar to prohibit constants as 3rd arg of sub and gsub; 91285587Sobrien prevents class of overwriting-a-constant errors. (Last one?) 91385587Sobrien This invalidates the "banana" example on page 43 of the book. 91485587Sobrien 91585587Sobrien Added \a ("alert"), \v (vertical tab), \xhhh (hexadecimal), 91685587Sobrien as in ANSI, for strings. Rescinded the sloppiness that permitted 91785587Sobrien non-octal digits in \ooo. Warning: not all compilers and libraries 91885587Sobrien will be able to deal with \x correctly. 91985587Sobrien 92085587SobrienJan 9, 1989: 92185587Sobrien Fixed bug that caused tempcell list to contain a duplicate. 92285587Sobrien The fix is kludgy. 92385587Sobrien 92485587SobrienDec 17, 1988: 92585587Sobrien Catches some more commandline errors in main. 92685587Sobrien Removed redundant decl of modf in run.c (confuses some compilers). 92785587Sobrien Warning: there's no single declaration of malloc, etc., in awk.h 92885587Sobrien that seems to satisfy all compilers. 92985587Sobrien 93085587SobrienDec 7, 1988: 93185587Sobrien Added a bit of code to error printing to avoid printing nulls. 93285587Sobrien (Not clear that it actually would.) 93385587Sobrien 93485587SobrienNov 27, 1988: 93585587Sobrien With fear and trembling, modified the grammar to permit 93685587Sobrien multiple pattern-action statements on one line without 93785587Sobrien an explicit separator. By definition, this capitulation 93885587Sobrien to the ghost of ancient implementations remains undefined 93985587Sobrien and thus subject to change without notice or apology. 94085587Sobrien DO NOT COUNT ON IT. 94185587Sobrien 94285587SobrienOct 30, 1988: 94385587Sobrien Fixed bug in call() that failed to recover storage. 94485587Sobrien 94585587Sobrien A warning is now generated if there are more arguments 94685587Sobrien in the call than in the definition (in lieu of fixing 94785587Sobrien another storage leak). 94885587Sobrien 94985587SobrienOct 20, 1988: 95085587Sobrien Fixed %c: if expr is numeric, use numeric value; 95185587Sobrien otherwise print 1st char of string value. still 95285587Sobrien doesn't work if the value is 0 -- won't print \0. 95385587Sobrien 95485587Sobrien Added a few more checks for running out of malloc. 95585587Sobrien 95685587SobrienOct 12, 1988: 95785587Sobrien Fixed bug in call() that freed local arrays twice. 95885587Sobrien 95985587Sobrien Fixed to handle deletion of non-existent array right; 96085587Sobrien complains about attempt to delete non-array element. 96185587Sobrien 96285587SobrienSep 30, 1988: 96385587Sobrien Now guarantees to evaluate all arguments of built-in 96485587Sobrien functions, as in C; the appearance is that arguments 96585587Sobrien are evaluated before the function is called. Places 96685587Sobrien affected are sub (gsub was ok), substr, printf, and 96785587Sobrien all the built-in arithmetic functions in bltin(). 96885587Sobrien A warning is generated if a bltin() is called with 96985587Sobrien the wrong number of arguments. 97085587Sobrien 97185587Sobrien This requires changing makeprof on p167 of the book. 97285587Sobrien 97385587SobrienAug 23, 1988: 97485587Sobrien setting FILENAME in BEGIN caused core dump, apparently 97585587Sobrien because it was freeing space not allocated by malloc. 97685587Sobrien 97785587SobrienJuly 24, 1988: 97885587Sobrien fixed egregious error in toupper/tolower functions. 97985587Sobrien still subject to rescinding, however. 98085587Sobrien 98185587SobrienJuly 2, 1988: 98285587Sobrien flush stdout before opening file or pipe 98385587Sobrien 98485587SobrienJuly 2, 1988: 98585587Sobrien performance bug in b.c/cgoto(): not freeing some sets of states. 98685587Sobrien partial fix only right now, and the number of states increased 98785587Sobrien to make it less obvious. 98885587Sobrien 98985587SobrienJune 1, 1988: 99085587Sobrien check error status on close 99185587Sobrien 99285587SobrienMay 28, 1988: 99385587Sobrien srand returns seed value it's using. 99485587Sobrien see 1/18/90 99585587Sobrien 99685587SobrienMay 22, 1988: 99785587Sobrien Removed limit on depth of function calls. 99885587Sobrien 99985587SobrienMay 10, 1988: 100085587Sobrien Fixed lib.c to permit _ in commandline variable names. 100185587Sobrien 100285587SobrienMar 25, 1988: 100385587Sobrien main.c fixed to recognize -- as terminator of command- 100485587Sobrien line options. Illegal options flagged. 100585587Sobrien Error reporting slightly cleaned up. 100685587Sobrien 100785587SobrienDec 2, 1987: 100885587Sobrien Newer C compilers apply a strict scope rule to extern 100985587Sobrien declarations within functions. Two extern declarations in 101085587Sobrien lib.c and tran.c have been moved to obviate this problem. 101185587Sobrien 101285587SobrienOct xx, 1987: 101385587Sobrien Reluctantly added toupper and tolower functions. 101485587Sobrien Subject to rescinding without notice. 101585587Sobrien 101685587SobrienSep 17, 1987: 101785587Sobrien Error-message printer had printf(s) instead of 101885587Sobrien printf("%s",s); got core dumps when the message 101985587Sobrien included a %. 102085587Sobrien 102185587SobrienSep 12, 1987: 102285587Sobrien Very long printf strings caused core dump; 102385587Sobrien fixed aprintf, asprintf, format to catch them. 102485587Sobrien Can still get a core dump in printf itself. 102585587Sobrien 102685587Sobrien 1027