FIXES revision 107806
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 28107806SobrienNov 29, 2002: 29107806Sobrien modified b.c (with tiny changes in main and run) to support 30107806Sobrien locales, using strcoll and iswhatever tests for posix character 31107806Sobrien classes. thanks to ruslan ermilov (ru@freebsd.org) for code. 32107806Sobrien the function isblank doesn't seem to have propagated to any 33107806Sobrien header file near me, so it's there explicitly. not properly 34107806Sobrien tested on non-ascii character sets by me. 35107806Sobrien 36107806SobrienJun 28, 2002: 37107806Sobrien modified run/format() and tran/getsval() to do a slightly better 38107806Sobrien job on using OFMT for output from print and CONVFMT for other 39107806Sobrien number->string conversions, as promised by posix and done by 40107806Sobrien gawk and mawk. there are still places where it doesn't work 41107806Sobrien right if CONVFMT is changed; by then the STR attribute of the 42107806Sobrien variable has been irrevocably set. thanks to arnold robbins for 43107806Sobrien code and examples. 44107806Sobrien 45107806Sobrien fixed subtle bug in format that could get core dump. thanks to 46107806Sobrien Jaromir Dolecek <jdolecek@NetBSD.org> for finding and fixing. 47107806Sobrien minor cleanup in run.c / format() at the same time. 48107806Sobrien 49107806Sobrien added some tests for null pointers to debugging printf's, which 50107806Sobrien were never intended for external consumption. thanks to dave 51107806Sobrien kerns (dkerns@lucent.com) for pointing this out. 52107806Sobrien 53107806Sobrien GNU compatibility: an empty regexp matches anything (thanks to 54107806Sobrien dag-erling smorgrav, des@ofug.org). subject to reversion if 55107806Sobrien this does more harm than good. 56107806Sobrien 57107806Sobrien pervasive small changes to make things more const-correct, as 58107806Sobrien reported by gcc's -Wwrite-strings. as it says in the gcc manual, 59107806Sobrien this may be more nuisance than useful. provoked by a suggestion 60107806Sobrien and code from arnaud desitter, arnaud@nimbus.geog.ox.ac.uk 61107806Sobrien 62107806Sobrien minor documentation changes to note that this now compiles out 63107806Sobrien of the box on Mac OS X. 64107806Sobrien 6590902SdesFeb 10, 2002: 6690902Sdes changed types in posix chars structure to quiet solaris cc. 6790902Sdes 6890902SdesJan 1, 2002: 6990902Sdes fflush() or fflush("") flushes all files and pipes. 7090902Sdes 7190902Sdes length(arrayname) returns number of elements; thanks to 7290902Sdes arnold robbins for suggestion. 7390902Sdes 7490902Sdes added a makefile.win to make it easier to build on windows. 7590902Sdes based on dan allen's buildwin.bat. 7690902Sdes 7790902SdesNov 16, 2001: 7890902Sdes added support for posix character class names like [:digit:], 7990902Sdes which are not exactly shorter than [0-9] and perhaps no more 8090902Sdes portable. thanks to dag-erling smorgrav for code. 8190902Sdes 8290902SdesFeb 16, 2001: 8390902Sdes removed -m option; no longer needed, and it was actually 8490902Sdes broken (noted thanks to volker kiefel). 8590902Sdes 8690902SdesFeb 10, 2001: 8790902Sdes fixed an appalling bug in gettok: any sequence of digits, +,-, E, e, 8890902Sdes and period was accepted as a valid number if it started with a period. 8990902Sdes this would never have happened with the lex version. 9090902Sdes 9190902Sdes other 1-character botches, now fixed, include a bare $ and a 9290902Sdes bare " at the end of the input. 9390902Sdes 9490902SdesFeb 7, 2001: 9590902Sdes more (const char *) casts in b.c and tran.c to silence warnings. 9690902Sdes 9785587SobrienNov 15, 2000: 9885587Sobrien fixed a bug introduced in august 1997 that caused expressions 9985587Sobrien like $f[1] to be syntax errors. thanks to arnold robbins for 10085587Sobrien noticing this and providing a fix. 10185587Sobrien 10285587SobrienOct 30, 2000: 10385587Sobrien fixed some nextfile bugs: not handling all cases. thanks to 10485587Sobrien arnold robbins for pointing this out. new regressions added. 10585587Sobrien 10685587Sobrien close() is now a function. it returns whatever the library 10785587Sobrien fclose returns, and -1 for closing a file or pipe that wasn't 10885587Sobrien opened. 10985587Sobrien 11085587SobrienSep 24, 2000: 11185587Sobrien permit \n explicitly in character classes; won't work right 11285587Sobrien if comes in as "[\n]" but ok as /[\n]/, because of multiple 11385587Sobrien processing of \'s. thanks to arnold robbins. 11485587Sobrien 11585587SobrienJuly 5, 2000: 11685587Sobrien minor fiddles in tran.c to keep compilers happy about uschar. 11785587Sobrien thanks to norman wilson. 11885587Sobrien 11985587SobrienMay 25, 2000: 12085587Sobrien yet another attempt at making 8-bit input work, with another 12185587Sobrien band-aid in b.c (member()), and some (uschar) casts to head 12285587Sobrien off potential errors in subscripts (like isdigit). also 12385587Sobrien changed HAT to NCHARS-2. thanks again to santiago vila. 12485587Sobrien 12585587Sobrien changed maketab.c to ignore apparently out of range definitions 12685587Sobrien instead of halting; new freeBSD generates one. thanks to 12785587Sobrien jon snader <jsnader@ix.netcom.com> for pointing out the problem. 12885587Sobrien 12985587SobrienMay 2, 2000: 13085587Sobrien fixed an 8-bit problem in b.c by making several char*'s into 13185587Sobrien unsigned char*'s. not clear i have them all yet. thanks to 13285587Sobrien Santiago Vila <sanvila@unex.es> for the bug report. 13385587Sobrien 13485587SobrienApr 21, 2000: 13585587Sobrien finally found and fixed a memory leak in function call; it's 13685587Sobrien been there since functions were added ~1983. thanks to 13785587Sobrien jon bentley for the test case that found it. 13885587Sobrien 13985587Sobrien added test in envinit to catch environment "variables" with 14085587Sobrien names begining with '='; thanks to Berend Hasselman. 14185587Sobrien 14285587SobrienJul 28, 1999: 14385587Sobrien added test in defn() to catch function foo(foo), which 14485587Sobrien otherwise recurses until core dump. thanks to arnold 14585587Sobrien robbins for noticing this. 14685587Sobrien 14785587SobrienJun 20, 1999: 14885587Sobrien added *bp in gettok in lex.c; appears possible to exit function 14985587Sobrien without terminating the string. thanks to russ cox. 15085587Sobrien 15185587SobrienJun 2, 1999: 15285587Sobrien added function stdinit() to run to initialize files[] array, 15385587Sobrien in case stdin, etc., are not constants; some compilers care. 15485587Sobrien 15585587SobrienMay 10, 1999: 15685587Sobrien replaced the ERROR ... FATAL, etc., macros with functions 15785587Sobrien based on vprintf, to avoid problems caused by overrunning 15885587Sobrien fixed-size errbuf array. thanks to ralph corderoy for the 15985587Sobrien impetus, and for pointing out a string termination bug in 16085587Sobrien qstring as well. 16185587Sobrien 16285587SobrienApr 21, 1999: 16385587Sobrien fixed bug that caused occasional core dumps with commandline 16485587Sobrien variable with value ending in \. (thanks to nelson beebe for 16585587Sobrien the test case.) 16685587Sobrien 16785587SobrienApr 16, 1999: 16885587Sobrien with code kindly provided by Bruce Lilly, awk now parses 16985587Sobrien /=/ and similar constructs more sensibly in more places. 17085587Sobrien Bruce also provided some helpful test cases. 17185587Sobrien 17285587SobrienApr 5, 1999: 17385587Sobrien changed true/false to True/False in run.c to make it 17485587Sobrien easier to compile with C++. Added some casts on malloc 17585587Sobrien and realloc to be honest about casts; ditto. changed 17685587Sobrien ltype int to long in struct rrow to reduce some 64-bit 17785587Sobrien complaints; other changes scattered throughout for the 17885587Sobrien same purpose. thanks to Nelson Beebe for these portability 17985587Sobrien improvements. 18085587Sobrien 18185587Sobrien removed some horrible pointer-int casting in b.c and elsewhere 18285587Sobrien by adding ptoi and itonp to localize the casts, which are 18385587Sobrien all benign. fixed one incipient bug that showed up on sgi 18485587Sobrien in 64-bit mode. 18585587Sobrien 18685587Sobrien reset lineno for new source file; include filename in error 18785587Sobrien message. also fixed line number error in continuation lines. 18885587Sobrien (thanks to Nelson Beebe for both of these.) 18985587Sobrien 19085587SobrienMar 24, 1999: 19185587Sobrien Nelson Beebe notes that irix 5.3 yacc dies with a bogus 19285587Sobrien error; use a newer version or switch to bison, since sgi 19385587Sobrien is unlikely to fix it. 19485587Sobrien 19585587SobrienMar 5, 1999: 19685587Sobrien changed isnumber to is_number to avoid the problem caused by 19785587Sobrien versions of ctype.h that include the name isnumber. 19885587Sobrien 19985587Sobrien distribution now includes a script for building on a Mac, 20085587Sobrien thanks to Dan Allen. 20185587Sobrien 20285587SobrienFeb 20, 1999: 20385587Sobrien fixed memory leaks in run.c (call) and tran.c (setfval). 20485587Sobrien thanks to Stephen Nutt for finding these and providing the fixes. 20585587Sobrien 20685587SobrienJan 13, 1999: 20785587Sobrien replaced srand argument by (unsigned int) in run.c; 20885587Sobrien avoids problem on Mac and potentially on Unix & Windows. 20985587Sobrien thanks to Dan Allen. 21085587Sobrien 21185587Sobrien added a few (int) casts to silence useless compiler warnings. 21285587Sobrien e.g., errorflag= in run.c jump(). 21385587Sobrien 21485587Sobrien added proctab.c to the bundle outout; one less thing 21585587Sobrien to have to compile out of the box. 21685587Sobrien 21785587Sobrien added calls to _popen and _pclose to the win95 stub for 21885587Sobrien pipes (thanks to Steve Adams for this helpful suggestion). 21985587Sobrien seems to work, though properties are not well understood 22085587Sobrien by me, and it appears that under some circumstances the 22185587Sobrien pipe output is truncated. Be careful. 22285587Sobrien 22385587SobrienOct 19, 1998: 22485587Sobrien fixed a couple of bugs in getrec: could fail to update $0 22585587Sobrien after a getline var; because inputFS wasn't initialized, 22685587Sobrien could split $0 on every character, a misleading diversion. 22785587Sobrien 22885587Sobrien fixed caching bug in makedfa: LRU was actually removing 22985587Sobrien least often used. 23085587Sobrien 23185587Sobrien thanks to ross ridge for finding these, and for providing 23285587Sobrien great bug reports. 23385587Sobrien 23485587SobrienMay 12, 1998: 23585587Sobrien fixed potential bug in readrec: might fail to update record 23685587Sobrien pointer after growing. thanks to dan levy for spotting this 23785587Sobrien and suggesting the fix. 23885587Sobrien 23985587SobrienMar 12, 1998: 24085587Sobrien added -V to print version number and die. 24185587Sobrien 24285587SobrienFeb 11, 1998: 24385587Sobrien subtle silent bug in lex.c: if the program ended with a number 24485587Sobrien longer than 1 digit, part of the input would be pushed back and 24585587Sobrien parsed again because token buffer wasn't terminated right. 24685587Sobrien example: awk 'length($0) > 10'. blush. at least i found it 24785587Sobrien myself. 24885587Sobrien 24985587SobrienAug 31, 1997: 25085587Sobrien s/adelete/awkdelete/: SGI uses this in malloc.h. 25185587Sobrien thanks to nelson beebe for pointing this one out. 25285587Sobrien 25385587SobrienAug 21, 1997: 25485587Sobrien fixed some bugs in sub and gsub when replacement includes \\. 25585587Sobrien this is a dark, horrible corner, but at least now i believe that 25685587Sobrien the behavior is the same as gawk and the intended posix standard. 25785587Sobrien thanks to arnold robbins for advice here. 25885587Sobrien 25985587SobrienAug 9, 1997: 26085587Sobrien somewhat regretfully, replaced the ancient lex-based lexical 26185587Sobrien analyzer with one written in C. it's longer, generates less code, 26285587Sobrien and more portable; the old one depended too much on mysterious 26385587Sobrien properties of lex that were not preserved in other environments. 26485587Sobrien in theory these recognize the same language. 26585587Sobrien 26685587Sobrien now using strtod to test whether a string is a number, instead of 26785587Sobrien the convoluted original function. should be more portable and 26885587Sobrien reliable if strtod is implemented right. 26985587Sobrien 27085587Sobrien removed now-pointless optimization in makefile that tries to avoid 27185587Sobrien recompilation when awkgram.y is changed but symbols are not. 27285587Sobrien 27385587Sobrien removed most fixed-size arrays, though a handful remain, some 27485587Sobrien of which are unchecked. you have been warned. 27585587Sobrien 27685587SobrienAug 4, 1997: 27785587Sobrien with some trepidation, replaced the ancient code that managed 27885587Sobrien fields and $0 in fixed-size arrays with arrays that grow on 27985587Sobrien demand. there is still some tension between trying to make this 28085587Sobrien run fast and making it clean; not sure it's right yet. 28185587Sobrien 28285587Sobrien the ill-conceived -mr and -mf arguments are now useful only 28385587Sobrien for debugging. previous dynamic string code removed. 28485587Sobrien 28585587Sobrien numerous other minor cleanups along the way. 28685587Sobrien 28785587SobrienJul 30, 1997: 28885587Sobrien using code provided by dan levy (to whom profuse thanks), replaced 28985587Sobrien fixed-size arrays and awkward kludges by a fairly uniform mechanism 29085587Sobrien to grow arrays as needed for printf, sub, gsub, etc. 29185587Sobrien 29285587SobrienJul 23, 1997: 29385587Sobrien falling off the end of a function returns "" and 0, not 0. 29485587Sobrien thanks to arnold robbins. 29585587Sobrien 29685587SobrienJun 17, 1997: 29785587Sobrien replaced several fixed-size arrays by dynamically-created ones 29885587Sobrien in run.c; added overflow tests to some previously unchecked cases. 29985587Sobrien getline, toupper, tolower. 30085587Sobrien 30185587Sobrien getline code is still broken in that recursive calls may wind 30285587Sobrien up using the same space. [fixed later] 30385587Sobrien 30485587Sobrien increased RECSIZE to 8192 to push problems further over the horizon. 30585587Sobrien 30685587Sobrien added \r to \n as input line separator for programs, not data. 30785587Sobrien damn CRLFs. 30885587Sobrien 30985587Sobrien modified format() to permit explicit printf("%c", 0) to include 31085587Sobrien a null byte in output. thanks to ken stailey for the fix. 31185587Sobrien 31285587Sobrien added a "-safe" argument that disables file output (print >, 31385587Sobrien print >>), process creation (cmd|getline, print |, system), and 31485587Sobrien access to the environment (ENVIRON). this is a first approximation 31585587Sobrien to a "safe" version of awk, but don't rely on it too much. thanks 31685587Sobrien to joan feigenbaum and matt blaze for the inspiration long ago. 31785587Sobrien 31885587SobrienJul 8, 1996: 31985587Sobrien fixed long-standing bug in sub, gsub(/a/, "\\\\&"); thanks to 32085587Sobrien ralph corderoy. 32185587Sobrien 32285587SobrienJun 29, 1996: 32385587Sobrien fixed awful bug in new field splitting; didn't get all the places 32485587Sobrien where input was done. 32585587Sobrien 32685587SobrienJun 28, 1996: 32785587Sobrien changed field-splitting to conform to posix definition: fields are 32885587Sobrien split using the value of FS at the time of input; it used to be 32985587Sobrien the value when the field or NF was first referred to, a much less 33085587Sobrien predictable definition. thanks to arnold robbins for encouragement 33185587Sobrien to do the right thing. 33285587Sobrien 33385587SobrienMay 28, 1996: 33485587Sobrien fixed appalling but apparently unimportant bug in parsing octal 33585587Sobrien numbers in reg exprs. 33685587Sobrien 33785587Sobrien explicit hex in reg exprs now limited to 2 chars: \xa, \xaa. 33885587Sobrien 33985587SobrienMay 27, 1996: 34085587Sobrien cleaned up some declarations so gcc -Wall is now almost silent. 34185587Sobrien 34285587Sobrien makefile now includes backup copies of ytab.c and lexyy.c in case 34385587Sobrien one makes before looking; it also avoids recreating lexyy.c unless 34485587Sobrien really needed. 34585587Sobrien 34685587Sobrien s/aprintf/awkprint, s/asprintf/awksprintf/ to avoid some name clashes 34785587Sobrien with unwisely-written header files. 34885587Sobrien 34985587Sobrien thanks to jeffrey friedl for several of these. 35085587Sobrien 35185587SobrienMay 26, 1996: 35285587Sobrien an attempt to rationalize the (unsigned) char issue. almost all 35385587Sobrien instances of unsigned char have been removed; the handful of places 35485587Sobrien in b.c where chars are used as table indices have been hand-crafted. 35585587Sobrien added some latin-1 tests to the regression, but i'm not confident; 35685587Sobrien none of my compilers seem to care much. thanks to nelson beebe for 35785587Sobrien pointing out some others that do care. 35885587Sobrien 35985587SobrienMay 2, 1996: 36085587Sobrien removed all register declarations. 36185587Sobrien 36285587Sobrien enhanced split(), as in gawk, etc: split(s, a, "") splits s into 36385587Sobrien a[1]...a[length(s)] with each character a single element. 36485587Sobrien 36585587Sobrien made the same changes for field-splitting if FS is "". 36685587Sobrien 36785587Sobrien added nextfile, as in gawk: causes immediate advance to next 36885587Sobrien input file. (thanks to arnold robbins for inspiration and code). 36985587Sobrien 37085587Sobrien small fixes to regexpr code: can now handle []], [[], and 37185587Sobrien variants; [] is now a syntax error, rather than matching 37285587Sobrien everything; [z-a] is now empty, not z. far from complete 37385587Sobrien or correct, however. (thanks to jeffrey friedl for pointing out 37485587Sobrien some awful behaviors.) 37585587Sobrien 37685587SobrienApr 29, 1996: 37785587Sobrien replaced uchar by uschar everwhere; apparently some compilers 37885587Sobrien usurp this name and this causes conflicts. 37985587Sobrien 38085587Sobrien fixed call to time in run.c (bltin); arg is time_t *. 38185587Sobrien 38285587Sobrien replaced horrible pointer/long punning in b.c by a legitimate 38385587Sobrien union. should be safer on 64-bit machines and cleaner everywhere. 38485587Sobrien (thanks to nelson beebe for pointing out some of these problems.) 38585587Sobrien 38685587Sobrien replaced nested comments by #if 0...#endif in run.c, lib.c. 38785587Sobrien 38885587Sobrien removed getsval, setsval, execute macros from run.c and lib.c. 38985587Sobrien machines are 100x faster than they were when these macros were 39085587Sobrien first used. 39185587Sobrien 39285587Sobrien revised filenames: awk.g.y => awkgram.y, awk.lx.l => awklex.l, 39385587Sobrien y.tab.[ch] => ytab.[ch], lex.yy.c => lexyy.c, all in the aid of 39485587Sobrien portability to nameless systems. 39585587Sobrien 39685587Sobrien "make bundle" now includes yacc and lex output files for recipients 39785587Sobrien who don't have yacc or lex. 39885587Sobrien 39985587SobrienAug 15, 1995: 40085587Sobrien initialized Cells in setsymtab more carefully; some fields 40185587Sobrien were not set. (thanks to purify, all of whose complaints i 40285587Sobrien think i now understand.) 40385587Sobrien 40485587Sobrien fixed at least one error in gsub that looked at -1-th element 40585587Sobrien of an array when substituting for a null match (e.g., $). 40685587Sobrien 40785587Sobrien delete arrayname is now legal; it clears the elements but leaves 40885587Sobrien the array, which may not be the right behavior. 40985587Sobrien 41085587Sobrien modified makefile: my current make can't cope with the test used 41185587Sobrien to avoid unnecessary yacc invocations. 41285587Sobrien 41385587SobrienJul 17, 1995: 41485587Sobrien added dynamically growing strings to awk.lx.l and b.c 41585587Sobrien to permit regular expressions to be much bigger. 41685587Sobrien the state arrays can still overflow. 41785587Sobrien 41885587SobrienAug 24, 1994: 41985587Sobrien detect duplicate arguments in function definitions (mdm). 42085587Sobrien 42185587SobrienMay 11, 1994: 42285587Sobrien trivial fix to printf to limit string size in sub(). 42385587Sobrien 42485587SobrienApr 22, 1994: 42585587Sobrien fixed yet another subtle self-assignment problem: 42685587Sobrien $1 = $2; $1 = $1 clobbered $1. 42785587Sobrien 42885587Sobrien Regression tests now use private echo, to avoid quoting problems. 42985587Sobrien 43085587SobrienFeb 2, 1994: 43185587Sobrien changed error() to print line number as %d, not %g. 43285587Sobrien 43385587SobrienJul 23, 1993: 43485587Sobrien cosmetic changes: increased sizes of some arrays, 43585587Sobrien reworded some error messages. 43685587Sobrien 43785587Sobrien added CONVFMT as in posix (just replaced OFMT in getsval) 43885587Sobrien 43985587Sobrien FILENAME is now "" until the first thing that causes a file 44085587Sobrien to be opened. 44185587Sobrien 44285587SobrienNov 28, 1992: 44385587Sobrien deleted yyunput and yyoutput from proto.h; 44485587Sobrien different versions of lex give these different declarations. 44585587Sobrien 44685587SobrienMay 31, 1992: 44785587Sobrien added -mr N and -mf N options: more record and fields. 44885587Sobrien these really ought to adjust automatically. 44985587Sobrien 45085587Sobrien cleaned up some error messages; "out of space" now means 45185587Sobrien malloc returned NULL in all cases. 45285587Sobrien 45385587Sobrien changed rehash so that if it runs out, it just returns; 45485587Sobrien things will continue to run slow, but maybe a bit longer. 45585587Sobrien 45685587SobrienApr 24, 1992: 45785587Sobrien remove redundant close of stdin when using -f -. 45885587Sobrien 45985587Sobrien got rid of core dump with -d; awk -d just prints date. 46085587Sobrien 46185587SobrienApr 12, 1992: 46285587Sobrien added explicit check for /dev/std(in,out,err) in redirection. 46385587Sobrien unlike gawk, no /dev/fd/n yet. 46485587Sobrien 46585587Sobrien added (file/pipe) builtin. hard to test satisfactorily. 46685587Sobrien not posix. 46785587Sobrien 46885587SobrienFeb 20, 1992: 46985587Sobrien recompile after abortive changes; should be unchanged. 47085587Sobrien 47185587SobrienDec 2, 1991: 47285587Sobrien die-casting time: converted to ansi C, installed that. 47385587Sobrien 47485587SobrienNov 30, 1991: 47585587Sobrien fixed storage leak in freefa, failing to recover [N]CCL. 47685587Sobrien thanks to Bill Jones (jones@cs.usask.ca) 47785587Sobrien 47885587SobrienNov 19, 1991: 47985587Sobrien use RAND_MAX instead of literal in builtin(). 48085587Sobrien 48185587SobrienNov 12, 1991: 48285587Sobrien cranked up some fixed-size arrays in b.c, and added a test for 48385587Sobrien overflow in penter. thanks to mark larsen. 48485587Sobrien 48585587SobrienSep 24, 1991: 48685587Sobrien increased buffer in gsub. a very crude fix to a general problem. 48785587Sobrien and again on Sep 26. 48885587Sobrien 48985587SobrienAug 18, 1991: 49085587Sobrien enforce variable name syntax for commandline variables: has to 49185587Sobrien start with letter or _. 49285587Sobrien 49385587SobrienJul 27, 1991: 49485587Sobrien allow newline after ; in for statements. 49585587Sobrien 49685587SobrienJul 21, 1991: 49785587Sobrien fixed so that in self-assignment like $1=$1, side effects 49885587Sobrien like recomputing $0 take place. (this is getting subtle.) 49985587Sobrien 50085587SobrienJun 30, 1991: 50185587Sobrien better test for detecting too-long output record. 50285587Sobrien 50385587SobrienJun 2, 1991: 50485587Sobrien better defense against very long printf strings. 50585587Sobrien made break and continue illegal outside of loops. 50685587Sobrien 50785587SobrienMay 13, 1991: 50885587Sobrien removed extra arg on gettemp, tempfree. minor error message rewording. 50985587Sobrien 51085587SobrienMay 6, 1991: 51185587Sobrien fixed silly bug in hex parsing in hexstr(). 51285587Sobrien removed an apparently unnecessary test in isnumber(). 51385587Sobrien warn about weird printf conversions. 51485587Sobrien fixed unchecked array overwrite in relex(). 51585587Sobrien 51685587Sobrien changed for (i in array) to access elements in sorted order. 51785587Sobrien then unchanged it -- it really does run slower in too many cases. 51885587Sobrien left the code in place, commented out. 51985587Sobrien 52085587SobrienFeb 10, 1991: 52185587Sobrien check error status on all writes, to avoid banging on full disks. 52285587Sobrien 52385587SobrienJan 28, 1991: 52485587Sobrien awk -f - reads the program from stdin. 52585587Sobrien 52685587SobrienJan 11, 1991: 52785587Sobrien failed to set numeric state on $0 in cmd|getline context in run.c. 52885587Sobrien 52985587SobrienNov 2, 1990: 53085587Sobrien fixed sleazy test for integrality in getsval; use modf. 53185587Sobrien 53285587SobrienOct 29, 1990: 53385587Sobrien fixed sleazy buggy code in lib.c that looked (incorrectly) for 53485587Sobrien too long input lines. 53585587Sobrien 53685587SobrienOct 14, 1990: 53785587Sobrien fixed the bug on p. 198 in which it couldn't deduce that an 53885587Sobrien argument was an array in some contexts. replaced the error 53985587Sobrien message in intest() by code that damn well makes it an array. 54085587Sobrien 54185587SobrienOct 8, 1990: 54285587Sobrien fixed horrible bug: types and values were not preserved in 54385587Sobrien some kinds of self-assignment. (in assign().) 54485587Sobrien 54585587SobrienAug 24, 1990: 54685587Sobrien changed NCHARS to 256 to handle 8-bit characters in strings 54785587Sobrien presented to match(), etc. 54885587Sobrien 54985587SobrienJun 26, 1990: 55085587Sobrien changed struct rrow (awk.h) to use long instead of int for lval, 55185587Sobrien since cfoll() stores a pointer in it. now works better when int's 55285587Sobrien are smaller than pointers! 55385587Sobrien 55485587SobrienMay 6, 1990: 55585587Sobrien AVA fixed the grammar so that ! is uniformly of the same precedence as 55685587Sobrien unary + and -. This renders illegal some constructs like !x=y, which 55785587Sobrien now has to be parenthesized as !(x=y), and makes others work properly: 55885587Sobrien !x+y is (!x)+y, and x!y is x !y, not two pattern-action statements. 55985587Sobrien (These problems were pointed out by Bob Lenk of Posix.) 56085587Sobrien 56185587Sobrien Added \x to regular expressions (already in strings). 56285587Sobrien Limited octal to octal digits; \8 and \9 are not octal. 56385587Sobrien Centralized the code for parsing escapes in regular expressions. 56485587Sobrien Added a bunch of tests to T.re and T.sub to verify some of this. 56585587Sobrien 56685587SobrienFeb 9, 1990: 56785587Sobrien fixed null pointer dereference bug in main.c: -F[nothing]. sigh. 56885587Sobrien 56985587Sobrien restored srand behavior: it returns the current seed. 57085587Sobrien 57185587SobrienJan 18, 1990: 57285587Sobrien srand now returns previous seed value (0 to start). 57385587Sobrien 57485587SobrienJan 5, 1990: 57585587Sobrien fix potential problem in tran.c -- something was freed, 57685587Sobrien then used in freesymtab. 57785587Sobrien 57885587SobrienOct 18, 1989: 57985587Sobrien another try to get the max number of open files set with 58085587Sobrien relatively machine-independent code. 58185587Sobrien 58285587Sobrien small fix to input() in case of multiple reads after EOF. 58385587Sobrien 58485587SobrienOct 11, 1989: 58585587Sobrien FILENAME is now defined in the BEGIN block -- too many old 58685587Sobrien programs broke. 58785587Sobrien 58885587Sobrien "-" means stdin in getline as well as on the commandline. 58985587Sobrien 59085587Sobrien added a bunch of casts to the code to tell the truth about 59185587Sobrien char * vs. unsigned char *, a right royal pain. added a 59285587Sobrien setlocale call to the front of main, though probably no one 59385587Sobrien has it usefully implemented yet. 59485587Sobrien 59585587SobrienAug 24, 1989: 59685587Sobrien removed redundant relational tests against nullnode if parse 59785587Sobrien tree already had a relational at that point. 59885587Sobrien 59985587SobrienAug 11, 1989: 60085587Sobrien fixed bug: commandline variable assignment has to look like 60185587Sobrien var=something. (consider the man page for =, in file =.1) 60285587Sobrien 60385587Sobrien changed number of arguments to functions to static arrays 60485587Sobrien to avoid repeated malloc calls. 60585587Sobrien 60685587SobrienAug 2, 1989: 60785587Sobrien restored -F (space) separator 60885587Sobrien 60985587SobrienJul 30, 1989: 61085587Sobrien added -v x=1 y=2 ... for immediate commandline variable assignment; 61185587Sobrien done before the BEGIN block for sure. they have to precede the 61285587Sobrien program if the program is on the commandline. 61385587Sobrien Modified Aug 2 to require a separate -v for each assignment. 61485587Sobrien 61585587SobrienJul 10, 1989: 61685587Sobrien fixed ref-thru-zero bug in environment code in tran.c 61785587Sobrien 61885587SobrienJun 23, 1989: 61985587Sobrien add newline to usage message. 62085587Sobrien 62185587SobrienJun 14, 1989: 62285587Sobrien added some missing ansi printf conversion letters: %i %X %E %G. 62385587Sobrien no sensible meaning for h or L, so they may not do what one expects. 62485587Sobrien 62585587Sobrien made %* conversions work. 62685587Sobrien 62785587Sobrien changed x^y so that if n is a positive integer, it's done 62885587Sobrien by explicit multiplication, thus achieving maximum accuracy. 62985587Sobrien (this should be done by pow() but it seems not to be locally.) 63085587Sobrien done to x ^= y as well. 63185587Sobrien 63285587SobrienJun 4, 1989: 63385587Sobrien ENVIRON array contains environment: if shell variable V=thing, 63485587Sobrien ENVIRON["V"] is "thing" 63585587Sobrien 63685587Sobrien multiple -f arguments permitted. error reporting is naive. 63785587Sobrien (they were permitted before, but only the last was used.) 63885587Sobrien 63985587Sobrien fixed a really stupid botch in the debugging macro dprintf 64085587Sobrien 64185587Sobrien fixed order of evaluation of commandline assignments to match 64285587Sobrien what the book claims: an argument of the form x=e is evaluated 64385587Sobrien at the time it would have been opened if it were a filename (p 63). 64485587Sobrien this invalidates the suggested answer to ex 4-1 (p 195). 64585587Sobrien 64685587Sobrien removed some code that permitted -F (space) fieldseparator, 64785587Sobrien since it didn't quite work right anyway. (restored aug 2) 64885587Sobrien 64985587SobrienApr 27, 1989: 65085587Sobrien Line number now accumulated correctly for comment lines. 65185587Sobrien 65285587SobrienApr 26, 1989: 65385587Sobrien Debugging output now includes a version date, 65485587Sobrien if one compiles it into the source each time. 65585587Sobrien 65685587SobrienApr 9, 1989: 65785587Sobrien Changed grammar to prohibit constants as 3rd arg of sub and gsub; 65885587Sobrien prevents class of overwriting-a-constant errors. (Last one?) 65985587Sobrien This invalidates the "banana" example on page 43 of the book. 66085587Sobrien 66185587Sobrien Added \a ("alert"), \v (vertical tab), \xhhh (hexadecimal), 66285587Sobrien as in ANSI, for strings. Rescinded the sloppiness that permitted 66385587Sobrien non-octal digits in \ooo. Warning: not all compilers and libraries 66485587Sobrien will be able to deal with \x correctly. 66585587Sobrien 66685587SobrienJan 9, 1989: 66785587Sobrien Fixed bug that caused tempcell list to contain a duplicate. 66885587Sobrien The fix is kludgy. 66985587Sobrien 67085587SobrienDec 17, 1988: 67185587Sobrien Catches some more commandline errors in main. 67285587Sobrien Removed redundant decl of modf in run.c (confuses some compilers). 67385587Sobrien Warning: there's no single declaration of malloc, etc., in awk.h 67485587Sobrien that seems to satisfy all compilers. 67585587Sobrien 67685587SobrienDec 7, 1988: 67785587Sobrien Added a bit of code to error printing to avoid printing nulls. 67885587Sobrien (Not clear that it actually would.) 67985587Sobrien 68085587SobrienNov 27, 1988: 68185587Sobrien With fear and trembling, modified the grammar to permit 68285587Sobrien multiple pattern-action statements on one line without 68385587Sobrien an explicit separator. By definition, this capitulation 68485587Sobrien to the ghost of ancient implementations remains undefined 68585587Sobrien and thus subject to change without notice or apology. 68685587Sobrien DO NOT COUNT ON IT. 68785587Sobrien 68885587SobrienOct 30, 1988: 68985587Sobrien Fixed bug in call() that failed to recover storage. 69085587Sobrien 69185587Sobrien A warning is now generated if there are more arguments 69285587Sobrien in the call than in the definition (in lieu of fixing 69385587Sobrien another storage leak). 69485587Sobrien 69585587SobrienOct 20, 1988: 69685587Sobrien Fixed %c: if expr is numeric, use numeric value; 69785587Sobrien otherwise print 1st char of string value. still 69885587Sobrien doesn't work if the value is 0 -- won't print \0. 69985587Sobrien 70085587Sobrien Added a few more checks for running out of malloc. 70185587Sobrien 70285587SobrienOct 12, 1988: 70385587Sobrien Fixed bug in call() that freed local arrays twice. 70485587Sobrien 70585587Sobrien Fixed to handle deletion of non-existent array right; 70685587Sobrien complains about attempt to delete non-array element. 70785587Sobrien 70885587SobrienSep 30, 1988: 70985587Sobrien Now guarantees to evaluate all arguments of built-in 71085587Sobrien functions, as in C; the appearance is that arguments 71185587Sobrien are evaluated before the function is called. Places 71285587Sobrien affected are sub (gsub was ok), substr, printf, and 71385587Sobrien all the built-in arithmetic functions in bltin(). 71485587Sobrien A warning is generated if a bltin() is called with 71585587Sobrien the wrong number of arguments. 71685587Sobrien 71785587Sobrien This requires changing makeprof on p167 of the book. 71885587Sobrien 71985587SobrienAug 23, 1988: 72085587Sobrien setting FILENAME in BEGIN caused core dump, apparently 72185587Sobrien because it was freeing space not allocated by malloc. 72285587Sobrien 72385587SobrienJuly 24, 1988: 72485587Sobrien fixed egregious error in toupper/tolower functions. 72585587Sobrien still subject to rescinding, however. 72685587Sobrien 72785587SobrienJuly 2, 1988: 72885587Sobrien flush stdout before opening file or pipe 72985587Sobrien 73085587SobrienJuly 2, 1988: 73185587Sobrien performance bug in b.c/cgoto(): not freeing some sets of states. 73285587Sobrien partial fix only right now, and the number of states increased 73385587Sobrien to make it less obvious. 73485587Sobrien 73585587SobrienJune 1, 1988: 73685587Sobrien check error status on close 73785587Sobrien 73885587SobrienMay 28, 1988: 73985587Sobrien srand returns seed value it's using. 74085587Sobrien see 1/18/90 74185587Sobrien 74285587SobrienMay 22, 1988: 74385587Sobrien Removed limit on depth of function calls. 74485587Sobrien 74585587SobrienMay 10, 1988: 74685587Sobrien Fixed lib.c to permit _ in commandline variable names. 74785587Sobrien 74885587SobrienMar 25, 1988: 74985587Sobrien main.c fixed to recognize -- as terminator of command- 75085587Sobrien line options. Illegal options flagged. 75185587Sobrien Error reporting slightly cleaned up. 75285587Sobrien 75385587SobrienDec 2, 1987: 75485587Sobrien Newer C compilers apply a strict scope rule to extern 75585587Sobrien declarations within functions. Two extern declarations in 75685587Sobrien lib.c and tran.c have been moved to obviate this problem. 75785587Sobrien 75885587SobrienOct xx, 1987: 75985587Sobrien Reluctantly added toupper and tolower functions. 76085587Sobrien Subject to rescinding without notice. 76185587Sobrien 76285587SobrienSep 17, 1987: 76385587Sobrien Error-message printer had printf(s) instead of 76485587Sobrien printf("%s",s); got core dumps when the message 76585587Sobrien included a %. 76685587Sobrien 76785587SobrienSep 12, 1987: 76885587Sobrien Very long printf strings caused core dump; 76985587Sobrien fixed aprintf, asprintf, format to catch them. 77085587Sobrien Can still get a core dump in printf itself. 77185587Sobrien 77285587Sobrien 773