Return to FIXES CVS log

Up to [Research Unix] / researchv10no / cmd / awk

Annotation of researchv10no/cmd/awk/FIXES, revision 1.1

1.1     ! root        1: Sep 12, 1987:
        !             2:        Very long printf strings caused core dump;
        !             3:        fixed aprintf, asprintf, format to catch them.
        !             4:        Can still get a core dump in printf itself.
        !             5: 
        !             6: Sep 17, 1987:
        !             7:        Error-message printer had printf(s) instead of
        !             8:        printf("%s",s);  got core dumps when the message
        !             9:        included a %.
        !            10: 
        !            11: Oct xx, 1987:
        !            12:        Reluctantly added toupper and tolower functions.
        !            13:        Subject to rescinding without notice.
        !            14: 
        !            15: Dec 2, 1987:
        !            16:        Newer C compilers apply a strict scope rule to extern
        !            17:        declarations within functions.  Two extern declarations in
        !            18:        lib.c and tran.c have been moved to obviate this problem.
        !            19: 
        !            20: Mar 25, 1988:
        !            21:        main.c fixed to recognize -- as terminator of command-
        !            22:        line options.  Illegal options flagged.
        !            23:        Error reporting slightly cleaned up.
        !            24: 
        !            25: May 10, 1988:
        !            26:        Fixed lib.c to permit _ in commandline variable names.
        !            27: 
        !            28: May 22, 1988:
        !            29:        Removed limit on depth of function calls.
        !            30: 
        !            31: May 28, 1988:
        !            32:        srand returns seed value it's using.
        !            33:        see 1/18/90
        !            34: 
        !            35: June 1, 1988:
        !            36:        check error status on close
        !            37: 
        !            38: July 2, 1988:
        !            39:        performance bug in b.c/cgoto(): not freeing some sets of states.
        !            40:        partial fix only right now, and the number of states increased
        !            41:        to make it less obvious.
        !            42: 
        !            43: July 2, 1988:
        !            44:        flush stdout before opening file or pipe
        !            45: 
        !            46: July 24, 1988:
        !            47:        fixed egregious error in toupper/tolower functions.
        !            48:        still subject to rescinding, however.
        !            49: 
        !            50: Aug 23, 1988:
        !            51:        setting FILENAME in BEGIN caused core dump, apparently
        !            52:        because it was freeing space not allocated by malloc.
        !            53: 
        !            54: Sep 30, 1988:
        !            55:        Now guarantees to evaluate all arguments of built-in
        !            56:        functions, as in C;  the appearance is that arguments
        !            57:        are evaluated before the function is called.  Places
        !            58:        affected are sub (gsub was ok), substr, printf, and
        !            59:        all the built-in arithmetic functions in bltin().
        !            60:        A warning is generated if a bltin() is called with
        !            61:        the wrong number of arguments.
        !            62: 
        !            63:        This requires changing makeprof on p167 of the book.
        !            64: 
        !            65: Oct 12, 1988:
        !            66:        Fixed bug in call() that freed local arrays twice.
        !            67: 
        !            68:        Fixed to handle deletion of non-existent array right;
        !            69:        complains about attempt to delete non-array element.
        !            70: 
        !            71: Oct 20, 1988:
        !            72:        Fixed %c:  if expr is numeric, use numeric value;
        !            73:        otherwise print 1st char of string value.
        !            74: 
        !            75:        Added a few more checks for running out of malloc.
        !            76: 
        !            77: Oct 30, 1988:
        !            78:        Fixed bug in call() that failed to recover storage.
        !            79: 
        !            80:        A warning is now generated if there are more arguments
        !            81:        in the call than in the definition (in lieu of fixing
        !            82:        another storage leak).
        !            83: 
        !            84: Nov 27, 1988:
        !            85:        With fear and trembling, modified the grammar to permit
        !            86:        multiple pattern-action statements on one line without
        !            87:        an explicit separator.  By definition, this capitulation
        !            88:        to the ghost of ancient implementations remains undefined
        !            89:        and thus subject to change without notice or apology.
        !            90:        DO NOT COUNT ON IT.
        !            91: 
        !            92: Dec 7, 1988:
        !            93:        Added a bit of code to error printing to avoid printing nulls.
        !            94:        (Not clear that it actually would.)
        !            95: 
        !            96: Dec 17, 1988:
        !            97:        Catches some more commandline errors in main.
        !            98:        Removed redundant decl of modf in run.c (confuses some compilers).
        !            99:        Warning:  there's no single declaration of malloc, etc., in awk.h
        !           100:        that seems to satisfy all compilers.
        !           101: 
        !           102: Jan 9, 1989:
        !           103:        Fixed bug that caused tempcell list to contain a duplicate.
        !           104:        The fix is kludgy.
        !           105: 
        !           106: Apr 9, 1989:
        !           107:        Changed grammar to prohibit constants as 3rd arg of sub and gsub;
        !           108:        prevents class of overwriting-a-constant errors.  (Last one?)
        !           109:        This invalidates the "banana" example on page 43 of the book.
        !           110: 
        !           111:        Added \a ("alert"), \v (vertical tab), \xhhh (hexadecimal),
        !           112:        as in ANSI, for strings.  Rescinded the sloppiness that permitted
        !           113:        non-octal digits in \ooo.  Warning:  not all compilers and libraries
        !           114:        will be able to deal with \x correctly.
        !           115: 
        !           116: Apr 26, 1989:
        !           117:        Debugging output now includes a version date,
        !           118:        if one compiles it into the source each time.
        !           119: 
        !           120: Apr 27, 1989:
        !           121:        Line number now accumulated correctly for comment lines.
        !           122: 
        !           123: Jun 4, 1989:
        !           124:        ENVIRON array contains environment: if shell variable V=thing,
        !           125:                ENVIRON["V"] is "thing"
        !           126: 
        !           127:        multiple -f arguments permitted.  error reporting is naive.
        !           128:        (they were permitted before, but only the last was used.)
        !           129: 
        !           130:        fixed a really stupid botch in the debugging macro dprintf
        !           131: 
        !           132:        fixed order of evaluation of commandline assignments to match
        !           133:        what the book claims:  an argument of the form x=e is evaluated
        !           134:        at the time it would have been opened if it were a filename (p 63).
        !           135:        this invalidates the suggested answer to ex 4-1 (p 195).
        !           136: 
        !           137:        removed some code that permitted -F (space) fieldseparator,
        !           138:        since it didn't quite work right anyway.  (restored aug 2)
        !           139: 
        !           140: Jun 14, 1989:
        !           141:        added some missing ansi printf conversion letters: %i %X %E %G.
        !           142:        no sensible meaning for h or L, so they may not do what one expects.
        !           143: 
        !           144:        made %* conversions work.
        !           145: 
        !           146:        changed x^y so that if n is a positive integer, it's done
        !           147:        by explicit multiplication, thus achieving maximum accuracy.
        !           148:        (this should be done by pow() but it seems not to be locally.)
        !           149:        done to x ^= y as well.
        !           150: 
        !           151: Jun 23, 1989:
        !           152:        add newline to usage message.
        !           153: 
        !           154: Jul 10, 1989:
        !           155:        fixed ref-thru-zero bug in environment code in tran.c
        !           156: 
        !           157: Jul 30, 1989:
        !           158:        added -v x=1 y=2 ... for immediate commandline variable assignment;
        !           159:        done before the BEGIN block for sure.  they have to precede the
        !           160:        program if the program is on the commandline.
        !           161:        Modified Aug 2 to require a separate -v for each assignment.
        !           162: 
        !           163: Aug 2, 1989:
        !           164:        restored -F (space) separator
        !           165: 
        !           166: Aug 11, 1989:
        !           167:        fixed bug:  commandline variable assignment has to look like
        !           168:        var=something.  (consider the man page for =, in file =.1)
        !           169: 
        !           170:        changed number of arguments to functions to static arrays
        !           171:        to avoid repeated malloc calls.
        !           172: 
        !           173: Aug 24, 1989:
        !           174:        removed redundant relational tests against nullnode if parse
        !           175:        tree already had a relational at that point.
        !           176: 
        !           177: Oct 11, 1989:
        !           178:        FILENAME is now defined in the BEGIN block -- too many old
        !           179:        programs broke.
        !           180: 
        !           181:        "-" means stdin in getline as well as on the commandline.
        !           182: 
        !           183:        added a bunch of casts to the code to tell the truth about
        !           184:        char * vs. unsigned char *, a right royal pain.  added a
        !           185:        setlocale call to the front of main, though probably no one
        !           186:        has it usefully implemented yet.
        !           187: 
        !           188: Oct 18, 1989:
        !           189:        another try to get the max number of open files set with
        !           190:        relatively machine-independent code.
        !           191: 
        !           192:        small fix to input() in case of multiple reads after EOF.
        !           193: 
        !           194: Jan 5, 1990:
        !           195:        fix potential problem in tran.c -- something was freed,
        !           196:        then used in freesymtab.
        !           197: 
        !           198: Jan 18, 1990:
        !           199:        srand now returns previous seed value (0 to start).
        !           200: 
        !           201: Feb 9, 1990:
        !           202:        fixed null pointer dereference bug in main.c:  -F[nothing].  sigh.
        !           203: 
        !           204:        restored srand behavior:  it returns the current seed.
        !           205: 
        !           206: May 6, 1990:
        !           207:        AVA fixed the grammar so that ! is uniformly of the same precedence as
        !           208:        unary + and -.  This renders illegal some constructs like !x=y, which
        !           209:        now has to be parenthesized as !(x=y), and makes others work properly:
        !           210:        !x+y is (!x)+y, and x!y is x !y, not two pattern-action statements.
        !           211:        (These problems were pointed out by Bob Lenk of Posix.)
        !           212: 
        !           213:        Added \x to regular expressions (already in strings).
        !           214:        Limited octal to octal digits; \8 and \9 are not octal.
        !           215:        Centralized the code for parsing escapes in regular expressions.
        !           216:        Added a bunch of tests to T.re and T.sub to verify some of this.
        !           217: 
        !           218: Jun 26, 1990:
        !           219:        changed struct rrow (awk.h) to use long instead of int for lval,
        !           220:        since cfoll() stores a pointer in it.  now works better when int's
        !           221:        are smaller than pointers!
        !           222: 
        !           223: Aug 24, 1990:
        !           224:        changed NCHARS to 256 to handle 8-bit characters in strings
        !           225:        presented to match(), etc.
        !           226: 
        !           227: Oct 8, 1990:
        !           228:        fixed horrible bug:  types and values were not preserved in
        !           229:        some kinds of self-assignment. (in assign().)
        !           230: 
        !           231: Oct 14, 1990:
        !           232:        fixed the bug on p. 198 in which it couldn't deduce that an
        !           233:        argument was an array in some contexts.  replaced the error
        !           234:        message in intest() by code that damn well makes it an array.
        !           235: 
        !           236: Oct 29, 1990:
        !           237:        fixed sleazy buggy code in lib.c that looked (incorrectly) for
        !           238:        too long input lines.
        !           239: 
        !           240: Nov 2, 1990:
        !           241:        fixed sleazy test for integrality in getsval;  use modf.
        !           242: 
        !           243: Jan 11, 1991:
        !           244:        failed to set numeric state on $0 in cmd|getline context in run.c.
        !           245: 
        !           246: Jan 28, 1991:
        !           247:        awk -f - reads the program from stdin.
        !           248: 
        !           249: Feb 10, 1991:
        !           250:        check error status on all writes, to avoid banging on full disks.
        !           251: 
        !           252: May 6, 1991:
        !           253:        fixed silly bug in hex parsing in hexstr().
        !           254:        removed an apparently unnecessary test in isnumber().
        !           255:        warn about weird printf conversions.
        !           256:        fixed unchecked array overwrite in relex().
        !           257: 
        !           258:        changed for (i in array) to access elements in sorted order.
        !           259:        then unchanged it -- it really does run slower in too many cases.
        !           260:        left the code in place, commented out.
        !           261: 
        !           262: May 13, 1991:
        !           263:        removed extra arg on gettemp, tempfree.  minor error message rewording.
        !           264: 
        !           265: Jun 2, 1991:
        !           266:        better defense against very long printf strings.
        !           267:        made break and continue illegal outside of loops.
        !           268: 
        !           269: Jun 30, 1991:
        !           270:        better test for detecting too-long output record.
        !           271: 
        !           272: Jul 21, 1991:
        !           273:        fixed so that in self-assignment like $1=$1, side effects
        !           274:        like recomputing $0 take place.  (this is getting subtle.)
        !           275: 
        !           276: Jul 27, 1991:
        !           277:        allow newline after ; in for statements.
        !           278: 
        !           279: Aug 18, 1991:
        !           280:        enforce variable name syntax for commandline variables: has to
        !           281:        start with letter or _.
        !           282: 
        !           283: Sep 24, 1991:
        !           284:        increased buffer in gsub.  a very crude fix to a general problem.
        !           285:        and again on Sep 26.
        !           286: 
        !           287: Nov 12, 1991:
        !           288:        cranked up some fixed-size arrays in b.c, and added a test for
        !           289:        overflow in penter.  thanks to mark larsen.
        !           290: 
        !           291: Nov 19, 1991:
        !           292:        use RAND_MAX instead of literal in builtin().
        !           293: 
        !           294: Nov 30, 1991:
        !           295:        fixed storage leak in freefa, failing to recover [N]CCL.
        !           296:        thanks to Bill Jones ([email protected])
        !           297: 
        !           298: Dec 2, 1991:
        !           299:        die-casting time:  converted to ansi C, installed that.
        !           300: 
        !           301: Feb 20, 1992:
        !           302:        recompile after abortive changes;  should be unchanged.
        !           303: 
        !           304: Apr 12, 1992:
        !           305:        added explicit check for /dev/std(in,out,err) in redirection.
        !           306:        unlike gawk, no /dev/fd/n yet.
        !           307: 
        !           308:        added fflush(file/pipe) builtin.  hard to test satisfactorily.
        !           309:        not posix.
        !           310: 
        !           311: Apr 24, 1992:
        !           312:        remove redundant close of stdin when using -f -.
        !           313: 
        !           314:        got rid of core dump with -d; awk -d just prints date.
        !           315: 
        !           316: May 31, 1992:
        !           317:        added -mr N and -mf N options: more record and fields.
        !           318:        these really ought to adjust automatically.
        !           319: 
        !           320:        cleaned up some error messages; "out of space" now means
        !           321:        malloc returned NULL in all cases.
        !           322: 
        !           323:        changed rehash so that if it runs out, it just returns;
        !           324:        things will continue to run slow, but maybe a bit longer.

This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.