FIXES revision 90902
1/**************************************************************** 2Copyright (C) Lucent Technologies 1997 3All Rights Reserved 4 5Permission to use, copy, modify, and distribute this software and 6its documentation for any purpose and without fee is hereby 7granted, provided that the above copyright notice appear in all 8copies and that both that the copyright notice and this 9permission notice and warranty disclaimer appear in supporting 10documentation, and that the name Lucent Technologies or any of 11its entities not be used in advertising or publicity pertaining 12to distribution of the software without specific, written prior 13permission. 14 15LUCENT DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, 16INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. 17IN NO EVENT SHALL LUCENT OR ANY OF ITS ENTITIES BE LIABLE FOR ANY 18SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 19WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER 20IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, 21ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF 22THIS SOFTWARE. 23****************************************************************/ 24 25This file lists all bug fixes, changes, etc., made since the AWK book 26was sent to the printers in August, 1987. 27 28Feb 10, 2002: 29 changed types in posix chars structure to quiet solaris cc. 30 31Jan 1, 2002: 32 fflush() or fflush("") flushes all files and pipes. 33 34 length(arrayname) returns number of elements; thanks to 35 arnold robbins for suggestion. 36 37 added a makefile.win to make it easier to build on windows. 38 based on dan allen's buildwin.bat. 39 40Nov 16, 2001: 41 added support for posix character class names like [:digit:], 42 which are not exactly shorter than [0-9] and perhaps no more 43 portable. thanks to dag-erling smorgrav for code. 44 45Feb 16, 2001: 46 removed -m option; no longer needed, and it was actually 47 broken (noted thanks to volker kiefel). 48 49Feb 10, 2001: 50 fixed an appalling bug in gettok: any sequence of digits, +,-, E, e, 51 and period was accepted as a valid number if it started with a period. 52 this would never have happened with the lex version. 53 54 other 1-character botches, now fixed, include a bare $ and a 55 bare " at the end of the input. 56 57Feb 7, 2001: 58 more (const char *) casts in b.c and tran.c to silence warnings. 59 60Nov 15, 2000: 61 fixed a bug introduced in august 1997 that caused expressions 62 like $f[1] to be syntax errors. thanks to arnold robbins for 63 noticing this and providing a fix. 64 65Oct 30, 2000: 66 fixed some nextfile bugs: not handling all cases. thanks to 67 arnold robbins for pointing this out. new regressions added. 68 69 close() is now a function. it returns whatever the library 70 fclose returns, and -1 for closing a file or pipe that wasn't 71 opened. 72 73Sep 24, 2000: 74 permit \n explicitly in character classes; won't work right 75 if comes in as "[\n]" but ok as /[\n]/, because of multiple 76 processing of \'s. thanks to arnold robbins. 77 78July 5, 2000: 79 minor fiddles in tran.c to keep compilers happy about uschar. 80 thanks to norman wilson. 81 82May 25, 2000: 83 yet another attempt at making 8-bit input work, with another 84 band-aid in b.c (member()), and some (uschar) casts to head 85 off potential errors in subscripts (like isdigit). also 86 changed HAT to NCHARS-2. thanks again to santiago vila. 87 88 changed maketab.c to ignore apparently out of range definitions 89 instead of halting; new freeBSD generates one. thanks to 90 jon snader <jsnader@ix.netcom.com> for pointing out the problem. 91 92May 2, 2000: 93 fixed an 8-bit problem in b.c by making several char*'s into 94 unsigned char*'s. not clear i have them all yet. thanks to 95 Santiago Vila <sanvila@unex.es> for the bug report. 96 97Apr 21, 2000: 98 finally found and fixed a memory leak in function call; it's 99 been there since functions were added ~1983. thanks to 100 jon bentley for the test case that found it. 101 102 added test in envinit to catch environment "variables" with 103 names begining with '='; thanks to Berend Hasselman. 104 105Jul 28, 1999: 106 added test in defn() to catch function foo(foo), which 107 otherwise recurses until core dump. thanks to arnold 108 robbins for noticing this. 109 110Jun 20, 1999: 111 added *bp in gettok in lex.c; appears possible to exit function 112 without terminating the string. thanks to russ cox. 113 114Jun 2, 1999: 115 added function stdinit() to run to initialize files[] array, 116 in case stdin, etc., are not constants; some compilers care. 117 118May 10, 1999: 119 replaced the ERROR ... FATAL, etc., macros with functions 120 based on vprintf, to avoid problems caused by overrunning 121 fixed-size errbuf array. thanks to ralph corderoy for the 122 impetus, and for pointing out a string termination bug in 123 qstring as well. 124 125Apr 21, 1999: 126 fixed bug that caused occasional core dumps with commandline 127 variable with value ending in \. (thanks to nelson beebe for 128 the test case.) 129 130Apr 16, 1999: 131 with code kindly provided by Bruce Lilly, awk now parses 132 /=/ and similar constructs more sensibly in more places. 133 Bruce also provided some helpful test cases. 134 135Apr 5, 1999: 136 changed true/false to True/False in run.c to make it 137 easier to compile with C++. Added some casts on malloc 138 and realloc to be honest about casts; ditto. changed 139 ltype int to long in struct rrow to reduce some 64-bit 140 complaints; other changes scattered throughout for the 141 same purpose. thanks to Nelson Beebe for these portability 142 improvements. 143 144 removed some horrible pointer-int casting in b.c and elsewhere 145 by adding ptoi and itonp to localize the casts, which are 146 all benign. fixed one incipient bug that showed up on sgi 147 in 64-bit mode. 148 149 reset lineno for new source file; include filename in error 150 message. also fixed line number error in continuation lines. 151 (thanks to Nelson Beebe for both of these.) 152 153Mar 24, 1999: 154 Nelson Beebe notes that irix 5.3 yacc dies with a bogus 155 error; use a newer version or switch to bison, since sgi 156 is unlikely to fix it. 157 158Mar 5, 1999: 159 changed isnumber to is_number to avoid the problem caused by 160 versions of ctype.h that include the name isnumber. 161 162 distribution now includes a script for building on a Mac, 163 thanks to Dan Allen. 164 165Feb 20, 1999: 166 fixed memory leaks in run.c (call) and tran.c (setfval). 167 thanks to Stephen Nutt for finding these and providing the fixes. 168 169Jan 13, 1999: 170 replaced srand argument by (unsigned int) in run.c; 171 avoids problem on Mac and potentially on Unix & Windows. 172 thanks to Dan Allen. 173 174 added a few (int) casts to silence useless compiler warnings. 175 e.g., errorflag= in run.c jump(). 176 177 added proctab.c to the bundle outout; one less thing 178 to have to compile out of the box. 179 180 added calls to _popen and _pclose to the win95 stub for 181 pipes (thanks to Steve Adams for this helpful suggestion). 182 seems to work, though properties are not well understood 183 by me, and it appears that under some circumstances the 184 pipe output is truncated. Be careful. 185 186Oct 19, 1998: 187 fixed a couple of bugs in getrec: could fail to update $0 188 after a getline var; because inputFS wasn't initialized, 189 could split $0 on every character, a misleading diversion. 190 191 fixed caching bug in makedfa: LRU was actually removing 192 least often used. 193 194 thanks to ross ridge for finding these, and for providing 195 great bug reports. 196 197May 12, 1998: 198 fixed potential bug in readrec: might fail to update record 199 pointer after growing. thanks to dan levy for spotting this 200 and suggesting the fix. 201 202Mar 12, 1998: 203 added -V to print version number and die. 204 205Feb 11, 1998: 206 subtle silent bug in lex.c: if the program ended with a number 207 longer than 1 digit, part of the input would be pushed back and 208 parsed again because token buffer wasn't terminated right. 209 example: awk 'length($0) > 10'. blush. at least i found it 210 myself. 211 212Aug 31, 1997: 213 s/adelete/awkdelete/: SGI uses this in malloc.h. 214 thanks to nelson beebe for pointing this one out. 215 216Aug 21, 1997: 217 fixed some bugs in sub and gsub when replacement includes \\. 218 this is a dark, horrible corner, but at least now i believe that 219 the behavior is the same as gawk and the intended posix standard. 220 thanks to arnold robbins for advice here. 221 222Aug 9, 1997: 223 somewhat regretfully, replaced the ancient lex-based lexical 224 analyzer with one written in C. it's longer, generates less code, 225 and more portable; the old one depended too much on mysterious 226 properties of lex that were not preserved in other environments. 227 in theory these recognize the same language. 228 229 now using strtod to test whether a string is a number, instead of 230 the convoluted original function. should be more portable and 231 reliable if strtod is implemented right. 232 233 removed now-pointless optimization in makefile that tries to avoid 234 recompilation when awkgram.y is changed but symbols are not. 235 236 removed most fixed-size arrays, though a handful remain, some 237 of which are unchecked. you have been warned. 238 239Aug 4, 1997: 240 with some trepidation, replaced the ancient code that managed 241 fields and $0 in fixed-size arrays with arrays that grow on 242 demand. there is still some tension between trying to make this 243 run fast and making it clean; not sure it's right yet. 244 245 the ill-conceived -mr and -mf arguments are now useful only 246 for debugging. previous dynamic string code removed. 247 248 numerous other minor cleanups along the way. 249 250Jul 30, 1997: 251 using code provided by dan levy (to whom profuse thanks), replaced 252 fixed-size arrays and awkward kludges by a fairly uniform mechanism 253 to grow arrays as needed for printf, sub, gsub, etc. 254 255Jul 23, 1997: 256 falling off the end of a function returns "" and 0, not 0. 257 thanks to arnold robbins. 258 259Jun 17, 1997: 260 replaced several fixed-size arrays by dynamically-created ones 261 in run.c; added overflow tests to some previously unchecked cases. 262 getline, toupper, tolower. 263 264 getline code is still broken in that recursive calls may wind 265 up using the same space. [fixed later] 266 267 increased RECSIZE to 8192 to push problems further over the horizon. 268 269 added \r to \n as input line separator for programs, not data. 270 damn CRLFs. 271 272 modified format() to permit explicit printf("%c", 0) to include 273 a null byte in output. thanks to ken stailey for the fix. 274 275 added a "-safe" argument that disables file output (print >, 276 print >>), process creation (cmd|getline, print |, system), and 277 access to the environment (ENVIRON). this is a first approximation 278 to a "safe" version of awk, but don't rely on it too much. thanks 279 to joan feigenbaum and matt blaze for the inspiration long ago. 280 281Jul 8, 1996: 282 fixed long-standing bug in sub, gsub(/a/, "\\\\&"); thanks to 283 ralph corderoy. 284 285Jun 29, 1996: 286 fixed awful bug in new field splitting; didn't get all the places 287 where input was done. 288 289Jun 28, 1996: 290 changed field-splitting to conform to posix definition: fields are 291 split using the value of FS at the time of input; it used to be 292 the value when the field or NF was first referred to, a much less 293 predictable definition. thanks to arnold robbins for encouragement 294 to do the right thing. 295 296May 28, 1996: 297 fixed appalling but apparently unimportant bug in parsing octal 298 numbers in reg exprs. 299 300 explicit hex in reg exprs now limited to 2 chars: \xa, \xaa. 301 302May 27, 1996: 303 cleaned up some declarations so gcc -Wall is now almost silent. 304 305 makefile now includes backup copies of ytab.c and lexyy.c in case 306 one makes before looking; it also avoids recreating lexyy.c unless 307 really needed. 308 309 s/aprintf/awkprint, s/asprintf/awksprintf/ to avoid some name clashes 310 with unwisely-written header files. 311 312 thanks to jeffrey friedl for several of these. 313 314May 26, 1996: 315 an attempt to rationalize the (unsigned) char issue. almost all 316 instances of unsigned char have been removed; the handful of places 317 in b.c where chars are used as table indices have been hand-crafted. 318 added some latin-1 tests to the regression, but i'm not confident; 319 none of my compilers seem to care much. thanks to nelson beebe for 320 pointing out some others that do care. 321 322May 2, 1996: 323 removed all register declarations. 324 325 enhanced split(), as in gawk, etc: split(s, a, "") splits s into 326 a[1]...a[length(s)] with each character a single element. 327 328 made the same changes for field-splitting if FS is "". 329 330 added nextfile, as in gawk: causes immediate advance to next 331 input file. (thanks to arnold robbins for inspiration and code). 332 333 small fixes to regexpr code: can now handle []], [[], and 334 variants; [] is now a syntax error, rather than matching 335 everything; [z-a] is now empty, not z. far from complete 336 or correct, however. (thanks to jeffrey friedl for pointing out 337 some awful behaviors.) 338 339Apr 29, 1996: 340 replaced uchar by uschar everwhere; apparently some compilers 341 usurp this name and this causes conflicts. 342 343 fixed call to time in run.c (bltin); arg is time_t *. 344 345 replaced horrible pointer/long punning in b.c by a legitimate 346 union. should be safer on 64-bit machines and cleaner everywhere. 347 (thanks to nelson beebe for pointing out some of these problems.) 348 349 replaced nested comments by #if 0...#endif in run.c, lib.c. 350 351 removed getsval, setsval, execute macros from run.c and lib.c. 352 machines are 100x faster than they were when these macros were 353 first used. 354 355 revised filenames: awk.g.y => awkgram.y, awk.lx.l => awklex.l, 356 y.tab.[ch] => ytab.[ch], lex.yy.c => lexyy.c, all in the aid of 357 portability to nameless systems. 358 359 "make bundle" now includes yacc and lex output files for recipients 360 who don't have yacc or lex. 361 362Aug 15, 1995: 363 initialized Cells in setsymtab more carefully; some fields 364 were not set. (thanks to purify, all of whose complaints i 365 think i now understand.) 366 367 fixed at least one error in gsub that looked at -1-th element 368 of an array when substituting for a null match (e.g., $). 369 370 delete arrayname is now legal; it clears the elements but leaves 371 the array, which may not be the right behavior. 372 373 modified makefile: my current make can't cope with the test used 374 to avoid unnecessary yacc invocations. 375 376Jul 17, 1995: 377 added dynamically growing strings to awk.lx.l and b.c 378 to permit regular expressions to be much bigger. 379 the state arrays can still overflow. 380 381Aug 24, 1994: 382 detect duplicate arguments in function definitions (mdm). 383 384May 11, 1994: 385 trivial fix to printf to limit string size in sub(). 386 387Apr 22, 1994: 388 fixed yet another subtle self-assignment problem: 389 $1 = $2; $1 = $1 clobbered $1. 390 391 Regression tests now use private echo, to avoid quoting problems. 392 393Feb 2, 1994: 394 changed error() to print line number as %d, not %g. 395 396Jul 23, 1993: 397 cosmetic changes: increased sizes of some arrays, 398 reworded some error messages. 399 400 added CONVFMT as in posix (just replaced OFMT in getsval) 401 402 FILENAME is now "" until the first thing that causes a file 403 to be opened. 404 405Nov 28, 1992: 406 deleted yyunput and yyoutput from proto.h; 407 different versions of lex give these different declarations. 408 409May 31, 1992: 410 added -mr N and -mf N options: more record and fields. 411 these really ought to adjust automatically. 412 413 cleaned up some error messages; "out of space" now means 414 malloc returned NULL in all cases. 415 416 changed rehash so that if it runs out, it just returns; 417 things will continue to run slow, but maybe a bit longer. 418 419Apr 24, 1992: 420 remove redundant close of stdin when using -f -. 421 422 got rid of core dump with -d; awk -d just prints date. 423 424Apr 12, 1992: 425 added explicit check for /dev/std(in,out,err) in redirection. 426 unlike gawk, no /dev/fd/n yet. 427 428 added (file/pipe) builtin. hard to test satisfactorily. 429 not posix. 430 431Feb 20, 1992: 432 recompile after abortive changes; should be unchanged. 433 434Dec 2, 1991: 435 die-casting time: converted to ansi C, installed that. 436 437Nov 30, 1991: 438 fixed storage leak in freefa, failing to recover [N]CCL. 439 thanks to Bill Jones (jones@cs.usask.ca) 440 441Nov 19, 1991: 442 use RAND_MAX instead of literal in builtin(). 443 444Nov 12, 1991: 445 cranked up some fixed-size arrays in b.c, and added a test for 446 overflow in penter. thanks to mark larsen. 447 448Sep 24, 1991: 449 increased buffer in gsub. a very crude fix to a general problem. 450 and again on Sep 26. 451 452Aug 18, 1991: 453 enforce variable name syntax for commandline variables: has to 454 start with letter or _. 455 456Jul 27, 1991: 457 allow newline after ; in for statements. 458 459Jul 21, 1991: 460 fixed so that in self-assignment like $1=$1, side effects 461 like recomputing $0 take place. (this is getting subtle.) 462 463Jun 30, 1991: 464 better test for detecting too-long output record. 465 466Jun 2, 1991: 467 better defense against very long printf strings. 468 made break and continue illegal outside of loops. 469 470May 13, 1991: 471 removed extra arg on gettemp, tempfree. minor error message rewording. 472 473May 6, 1991: 474 fixed silly bug in hex parsing in hexstr(). 475 removed an apparently unnecessary test in isnumber(). 476 warn about weird printf conversions. 477 fixed unchecked array overwrite in relex(). 478 479 changed for (i in array) to access elements in sorted order. 480 then unchanged it -- it really does run slower in too many cases. 481 left the code in place, commented out. 482 483Feb 10, 1991: 484 check error status on all writes, to avoid banging on full disks. 485 486Jan 28, 1991: 487 awk -f - reads the program from stdin. 488 489Jan 11, 1991: 490 failed to set numeric state on $0 in cmd|getline context in run.c. 491 492Nov 2, 1990: 493 fixed sleazy test for integrality in getsval; use modf. 494 495Oct 29, 1990: 496 fixed sleazy buggy code in lib.c that looked (incorrectly) for 497 too long input lines. 498 499Oct 14, 1990: 500 fixed the bug on p. 198 in which it couldn't deduce that an 501 argument was an array in some contexts. replaced the error 502 message in intest() by code that damn well makes it an array. 503 504Oct 8, 1990: 505 fixed horrible bug: types and values were not preserved in 506 some kinds of self-assignment. (in assign().) 507 508Aug 24, 1990: 509 changed NCHARS to 256 to handle 8-bit characters in strings 510 presented to match(), etc. 511 512Jun 26, 1990: 513 changed struct rrow (awk.h) to use long instead of int for lval, 514 since cfoll() stores a pointer in it. now works better when int's 515 are smaller than pointers! 516 517May 6, 1990: 518 AVA fixed the grammar so that ! is uniformly of the same precedence as 519 unary + and -. This renders illegal some constructs like !x=y, which 520 now has to be parenthesized as !(x=y), and makes others work properly: 521 !x+y is (!x)+y, and x!y is x !y, not two pattern-action statements. 522 (These problems were pointed out by Bob Lenk of Posix.) 523 524 Added \x to regular expressions (already in strings). 525 Limited octal to octal digits; \8 and \9 are not octal. 526 Centralized the code for parsing escapes in regular expressions. 527 Added a bunch of tests to T.re and T.sub to verify some of this. 528 529Feb 9, 1990: 530 fixed null pointer dereference bug in main.c: -F[nothing]. sigh. 531 532 restored srand behavior: it returns the current seed. 533 534Jan 18, 1990: 535 srand now returns previous seed value (0 to start). 536 537Jan 5, 1990: 538 fix potential problem in tran.c -- something was freed, 539 then used in freesymtab. 540 541Oct 18, 1989: 542 another try to get the max number of open files set with 543 relatively machine-independent code. 544 545 small fix to input() in case of multiple reads after EOF. 546 547Oct 11, 1989: 548 FILENAME is now defined in the BEGIN block -- too many old 549 programs broke. 550 551 "-" means stdin in getline as well as on the commandline. 552 553 added a bunch of casts to the code to tell the truth about 554 char * vs. unsigned char *, a right royal pain. added a 555 setlocale call to the front of main, though probably no one 556 has it usefully implemented yet. 557 558Aug 24, 1989: 559 removed redundant relational tests against nullnode if parse 560 tree already had a relational at that point. 561 562Aug 11, 1989: 563 fixed bug: commandline variable assignment has to look like 564 var=something. (consider the man page for =, in file =.1) 565 566 changed number of arguments to functions to static arrays 567 to avoid repeated malloc calls. 568 569Aug 2, 1989: 570 restored -F (space) separator 571 572Jul 30, 1989: 573 added -v x=1 y=2 ... for immediate commandline variable assignment; 574 done before the BEGIN block for sure. they have to precede the 575 program if the program is on the commandline. 576 Modified Aug 2 to require a separate -v for each assignment. 577 578Jul 10, 1989: 579 fixed ref-thru-zero bug in environment code in tran.c 580 581Jun 23, 1989: 582 add newline to usage message. 583 584Jun 14, 1989: 585 added some missing ansi printf conversion letters: %i %X %E %G. 586 no sensible meaning for h or L, so they may not do what one expects. 587 588 made %* conversions work. 589 590 changed x^y so that if n is a positive integer, it's done 591 by explicit multiplication, thus achieving maximum accuracy. 592 (this should be done by pow() but it seems not to be locally.) 593 done to x ^= y as well. 594 595Jun 4, 1989: 596 ENVIRON array contains environment: if shell variable V=thing, 597 ENVIRON["V"] is "thing" 598 599 multiple -f arguments permitted. error reporting is naive. 600 (they were permitted before, but only the last was used.) 601 602 fixed a really stupid botch in the debugging macro dprintf 603 604 fixed order of evaluation of commandline assignments to match 605 what the book claims: an argument of the form x=e is evaluated 606 at the time it would have been opened if it were a filename (p 63). 607 this invalidates the suggested answer to ex 4-1 (p 195). 608 609 removed some code that permitted -F (space) fieldseparator, 610 since it didn't quite work right anyway. (restored aug 2) 611 612Apr 27, 1989: 613 Line number now accumulated correctly for comment lines. 614 615Apr 26, 1989: 616 Debugging output now includes a version date, 617 if one compiles it into the source each time. 618 619Apr 9, 1989: 620 Changed grammar to prohibit constants as 3rd arg of sub and gsub; 621 prevents class of overwriting-a-constant errors. (Last one?) 622 This invalidates the "banana" example on page 43 of the book. 623 624 Added \a ("alert"), \v (vertical tab), \xhhh (hexadecimal), 625 as in ANSI, for strings. Rescinded the sloppiness that permitted 626 non-octal digits in \ooo. Warning: not all compilers and libraries 627 will be able to deal with \x correctly. 628 629Jan 9, 1989: 630 Fixed bug that caused tempcell list to contain a duplicate. 631 The fix is kludgy. 632 633Dec 17, 1988: 634 Catches some more commandline errors in main. 635 Removed redundant decl of modf in run.c (confuses some compilers). 636 Warning: there's no single declaration of malloc, etc., in awk.h 637 that seems to satisfy all compilers. 638 639Dec 7, 1988: 640 Added a bit of code to error printing to avoid printing nulls. 641 (Not clear that it actually would.) 642 643Nov 27, 1988: 644 With fear and trembling, modified the grammar to permit 645 multiple pattern-action statements on one line without 646 an explicit separator. By definition, this capitulation 647 to the ghost of ancient implementations remains undefined 648 and thus subject to change without notice or apology. 649 DO NOT COUNT ON IT. 650 651Oct 30, 1988: 652 Fixed bug in call() that failed to recover storage. 653 654 A warning is now generated if there are more arguments 655 in the call than in the definition (in lieu of fixing 656 another storage leak). 657 658Oct 20, 1988: 659 Fixed %c: if expr is numeric, use numeric value; 660 otherwise print 1st char of string value. still 661 doesn't work if the value is 0 -- won't print \0. 662 663 Added a few more checks for running out of malloc. 664 665Oct 12, 1988: 666 Fixed bug in call() that freed local arrays twice. 667 668 Fixed to handle deletion of non-existent array right; 669 complains about attempt to delete non-array element. 670 671Sep 30, 1988: 672 Now guarantees to evaluate all arguments of built-in 673 functions, as in C; the appearance is that arguments 674 are evaluated before the function is called. Places 675 affected are sub (gsub was ok), substr, printf, and 676 all the built-in arithmetic functions in bltin(). 677 A warning is generated if a bltin() is called with 678 the wrong number of arguments. 679 680 This requires changing makeprof on p167 of the book. 681 682Aug 23, 1988: 683 setting FILENAME in BEGIN caused core dump, apparently 684 because it was freeing space not allocated by malloc. 685 686July 24, 1988: 687 fixed egregious error in toupper/tolower functions. 688 still subject to rescinding, however. 689 690July 2, 1988: 691 flush stdout before opening file or pipe 692 693July 2, 1988: 694 performance bug in b.c/cgoto(): not freeing some sets of states. 695 partial fix only right now, and the number of states increased 696 to make it less obvious. 697 698June 1, 1988: 699 check error status on close 700 701May 28, 1988: 702 srand returns seed value it's using. 703 see 1/18/90 704 705May 22, 1988: 706 Removed limit on depth of function calls. 707 708May 10, 1988: 709 Fixed lib.c to permit _ in commandline variable names. 710 711Mar 25, 1988: 712 main.c fixed to recognize -- as terminator of command- 713 line options. Illegal options flagged. 714 Error reporting slightly cleaned up. 715 716Dec 2, 1987: 717 Newer C compilers apply a strict scope rule to extern 718 declarations within functions. Two extern declarations in 719 lib.c and tran.c have been moved to obviate this problem. 720 721Oct xx, 1987: 722 Reluctantly added toupper and tolower functions. 723 Subject to rescinding without notice. 724 725Sep 17, 1987: 726 Error-message printer had printf(s) instead of 727 printf("%s",s); got core dumps when the message 728 included a %. 729 730Sep 12, 1987: 731 Very long printf strings caused core dump; 732 fixed aprintf, asprintf, format to catch them. 733 Can still get a core dump in printf itself. 734 735 736