| Commit message (Collapse) | Author | Age | Files | Lines |
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[editor's note: the sparc executables have not been included, and
emacs backup files have been removed. This was reconstructed from a
tarball found on the September 1994 InfoMagic CD; the date of this is
approximate]
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[editor's note: from history.perl.org. The sparc executables
originally included in the distribution are not in this commit.]
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See patch #20.
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Ok, here's the cleanup patch I suggested you wait for. Have at it...
Subject: added little-endian pack/unpack options
This is the only enhancement in this patch, but it seemed unlikely
to bust anything else, and added functionality that it was very
difficult to do any other way. Compliments of David W. Sanderson.
Subject: op/regexp.t failed from missing arg to bcmp()
Subject: study was busted by 4.018
Subject: sort $subname was busted by changes in 4.018
Subject: default arg for shift was wrong after first subroutine definition
Things that broke in 4.018. Shame on me.
Subject: do {$foo ne "bar";} returned wrong value
A bug of long standing. How come nobody saw this one? Or if you
did, why didn't you report it before now? Or if you did, why did
I ignore you? :-)
Subject: some machines need -lsocket before -lnsl
Subject: some earlier patches weren't propagated to alternate 286 code
Subject: compile in the x2p directory couldn't find cppstdin
Subject: more hints for aix, isc, hp, sco, uts
Subject: installperl no longer updates unchanged library files
Subject: uts wrongly defines S_ISDIR() et al
Subject: too many preprocessors can't expand a macro right in #if
The usual pastiche of portability kludges.
Subject: deleted some unused functions from usersub.c
And fixed the spelling of John Macdonald's name, and included his
suggested workaround for a certain vendor's stdio bug...
Subject: added readdir test
Subject: made op/groups.t more reliable
Subject: added test for sort $subname to op/sort.t
Subject: added some hacks to op/stat.t for weird filesystem architectures
Improvements (hopefully) to the regression tests.
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See patch #11.
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Subject: pack(hh,1) dumped core
Subject: read didn't work from character special files open for writing
Subject: close-on-exec wrongly set on system file descriptors
Subject: //g only worked first time through
Subject: perl -v printed incorrect copyright notice
Subject: certain pattern optimizations were botched
Subject: documented some newer features in addenda
Subject: $) and $| incorrectly handled in run-time patterns
Subject: added tests for case-insensitive regular expressions
Subject: m'$foo' now treats string as single quoted
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See patch #4.
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So far, 4.0 is still a beta test version. For the last production
version, look in pub/perl.3.0/kits@44.
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See patch #42.
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See patch #38.
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See patch #29.
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Certain systems, notable Ultrix, set the close-on-exec flag
by default on dup'ed file descriptors. This is anti-social
when you're creating a new STDOUT. The flag is now forced
off for STDIN, STDOUT and STDERR.
Some yaccs report 29 shift/reduce conflicts and 59 reduce/reduce
conflicts, while other yaccs and bison report 27 and 61. The
Makefile now says to expect either thing. I'm not sure if there's
a bug lurking there somewhere.
The defined(@array) and defined(%array) ended up defining
the arrays they were trying to determine the status of. Oops.
Using the status of NSIG to determine whether <signal.h> had
been included didn't work right on Xenix. A fix seems to be
beyond Configure at the moment, so we've got some OS dependent
#ifdefs in there.
There were some syntax errors in the new code to determine whether
it is safe to emulate rename() with unlink/link/unlink. Obviously
heavily tested code... :-)
Patch 27 introduced the possibility of using identifiers as
unquoted strings, but the code to warn against the use of
totally lowercase identifiers looped infinitely.
I documented that you can't interpolate $) or $| in pattern.
It was actually implied under s///, but it should have been
more explicit.
Patterns with {m} rather than {m,n} didn't work right.
Tests io.fs and op.stat had difficulties under AFS. They now
ignore the tests in question if they think they're running under
/afs.
The shift/reduce expectation message was off for a2p's Makefile.
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See patch #19.
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See patch #16.
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I added the list slice operator: (LIST)[LIST]
$hexdigit = (0..9,'a','b','c','d','e','f')[$fourbits]
There was no way to cut stuff out of the middle of an array
or to insert stuff without copying the head and tail of the array,
which is gross. I added the splice operator to do this:
@oldelems = splice(@array,$offset,$len,LIST)
Equivalencies:
splice(@array,0,1)
splice(@array,0,0,$x,$y)
splice(@array,-1,1)
splice(@array,$#array+1,0,$x,$y)
splice(@array,$x,1,$y)
Having -lPW as one of the libraries that Configure looks for
was causing lots of people grief. It was only there for
people using bison who otherwise don't have alloca(), so I
zapped it.
Some of the questions that supported the ~name syntax didn't
say so, and some that should have supported it didn't. Now they do.
If you selected the manp directory for your man pages, the manext
variable was left set to 'n'.
When Configure sees that the optional libraries have previously
been determined in config.sh, it now believes it rather than using
the list it generates.
In the test for byteorder, some compilers get indigestion on the
constant 0x0807060504030201. It's now split into two parts.
Some compilers don't like it if you put CCFLAGS after the .c file
on the command line. Some of the Configure tests did this.
On some systems, the test for vprintf() needs to have stdio.h
included in order to give valid results.
Some machines don't support the volatile declaration as applied
to a pointer. The Configure test now checks for this.
Also, cmd.c had some VOLATILE declarations on pointed-to items
rather than the pointers themselves, causing MIPS heartburn.
In Makefile.SH, some of the t*.c files needed to have dependencies
on perly.h. Additionally, some parallel makes can't handle a
dependency line with two targets, so the perly.h and perl.c lines
have been separated. Also, when perly.h is generated, it will
now have a declaration added to it for yylval--bison wasn't supplying
this.
The construct "while (s/x//) {}" was partially fixed in patch 9, but
there were still some weirdnesses about it. Hopefully these are
ironed out now.
If you did a switch structure based on numeric value, and there
was some action attached to when the variable is greater than
the maximum specified value, that action would not happen. Instead,
any action for values under the minimum value happened.
The debugger had some difficulties after patch 9, due to changes
in the meaning of @array in a scalar context, and because of
an pointer error in patch 9.
Because of the fix in patch 9 to let return () work right, the
construct "return (@array)" did counter-intuitive things. It
now returns an array value. "return @array" and "return (@array)"
now mean the same thing.
A pack of ascii strings could call str_ncat() with negative length
when the length of the string was greater than the length specified
for the field.
Patch 9 fixed *name values so that the wouldn't collide with ordinary
string values, but there were two places I missed, one in perldb,
and one in the sprintf code.
Perl looks at commands it is going to execute to see if it can
bypass /bin/sh and execute them directly. Ordinarily = is not
a shell metacharacter, but in a command like "system 'FOO=bar command'"i
it indicates that /bin/sh should be used, since it's setting an
environment variable. It now does that (other than that construct,
the = character is still not a shell metacharacter).
If a runtime pattern to split happens to be null, it was being
interpreted as if it were a space, that is, as the awk-emulating
split. It now splits all characters apart, since that's more in
line with what people expect, and the other behavior wasn't documented.
Patch 9 added the reserved word "pipe". The scripts eg/g/gsh and
/eg/scan/scanner used pipe as filehandle since they were written
before the recommendation of upper-case filehandles was devised.
They now use PIPE.
The undef $/ command was supposed to let you slurp in an entire
binary file with one <>, but it didn't work as advertised.
Xenix systems have been having problems with Configure setting
up ndir right. Hopefully this will work better now, but it's
possible the changes will blow someone else up. Such is life...
The construct (LIST,) is now legal, so that you can say
@foo = (
1,
2,
3,
);
Various changes were made to the documentation.
In double quoted strings, you could say \0 to mean the null
character. In pattern matches, only \000 was allowed since
\0 was taken to be a \<digit> backreference. Since it doesn't
make sense to refer to the whole matched string before it's done,
there's no reason \0 can't mean null in a pattern too. So now
it does.
You could modify a numeric variable by using substr as an lvalue,
and if you then reference the variable numerically, you'd get
the old number out rather than one derived from the new string.
Now the old number is invalidated on lvalued substr.
The test t/op.mkdir should create directories 0777 rather than 0666.
As Randal requested, the last semicolon of a program is now optional.
Actually, he just asked for -e 'prog' to have that behaviour, but
it seemed reasonable to generalize it slightly. It's been that
way with eval for some time.
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See patch #9.
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See patch 7.
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Some machines have bcopy() but not bzero(), so Configure
tests for them separately now. Likewise for symlink() and lstat().
Some systems have dirent.h but not readdir(). The symbols BZERO,
LSTAT and READDIR are now used to differentiate.
Some machines have <time.h> including <sys/time.h>. Some do
the opposite. Some don't even have <sys/time.h>. Configure
now looks for both kinds of include, and the saga continues...
Configure tested twice for the presence of -lnm because x2p/Makefile.SH
had a reference to the obsolete $libnm variable. It now tests
only once.
Some machines have goodies stashed in /usr/include/sun,
/usr/include/bsd, -lsun and -lbsd. Configure now checks those
locations.
Configure could sometimes add an option to a default of none,
producing [none -DDEBUGGING] prompts. This is fixed.
Many of the units in metaconfig used the construct
if xxx=`loc...`; then
On most machines the exit status of loc ends up in $?, but on
a few machines, the assignment apparently sets $? to 0, since
it always succeeds. Oh well...
The tests for byte order had difficulties with illegal octal
digits and constants that were too long, as well as not defining
the union in try.c correctly.
When <dirent.h> was missing, it was assumed that the field d_namlen
existed. There is now an explicit check of <sys/dir.h> for the field.
The tests of <signal.h> to see how signal() is declared needed to have
signal.h run through the C preprocessor first because of POSIX ifdefs.
The type returned by getgroups() was defaulting wrong on Suns and
such. Configure now checks against the lint library if it exists
to produce a better default.
The construct
foreach $elem (@array) {
foreach $elem (@array) {
...
}
}
didn't work right because the iterator for the array was stored
with the array rather than with the node in the syntax tree.
If you said
defined $foo{'bar'}
it would create the element $foo{'bar'} while returning the
correct value. It now no longer creates the value.
The grep() function was occasionally losing arguments or dumping core.
This was because it called eval() on each argument but didn't
account for the fact that eval() is capable of reallocating the
stack.
If you said
$something ? $foo[1] : $foo[2]
you ended up (usually) with
$something ? $foo[0] : $foo[0]
because of the way the ?: operator tries to fool the stack into
thinking there's only one argument there instead of three. This
only happened to constant subscripts. Interestingly enough,
$abc[1] ? $foo[1] : $bar[1]
would have worked, since the first argument has the same subscript.
Some machines already define TRUE and FALSE, so we have to undef
them to avoid warnings.
Several people sent in some fixes for manual typos and indent problems.
There was a reqeust to clarify the difference between $! and $@, and
I added a gratuitous warning about print making an array context for
its arguments, since people seem to run into that frequently.
suidperl could correctly emulate a setgid script, but then it could
get confused about what the actual effective gid was.
Some machine or other defines sighandler(), so perl's sighandler()
needed to be made static.
We changed uchar to unchar for Crays, and it turns out that lots
of SysV machines typedef unchar instead. Sigh. It's now un_char.
If you did substitutions to chop leading components off a string,
and then set the string from <filehandle>, under certain circumstances
the input string could be corrupted because str_gets() called
str_grow() without making sure to change the strings current length to
be the number of characters just read, rather than the old length.
op.stat occasionally failed with NFS race condition, so it now waits
two seconds instead of one to guarantee that the NFS server advances
its clock at least one second.
IBM PC/RT compiler can't deal with UNI() and LOP() macros. If you
define CRIPPLED_CC it now will recast those macros as subroutines,
which runs a little slower but doesn't give the compiler heartburn.
The } character can terminate either an associative array subscript
or a BLOCK. These set up different expectations as to whether the
next token might be a term or an operator. There was a faulty
heuristic based on whether there was an intervening newline.
It turns out that if } simply leaves the current expectations along,
the right thing happens.
The command y/abcde// didn't work because the length of the first
part was not correctly copied to the second part.
In s2p, line labels without a subsequent statement were done wrong,
since an extra semicolon needs to be supplied. It wasn't always
suppplied, and when it was supplied, it was in the wrong place.
S2p also needed to remove its /tmp files better.
A2p translates
for (a in b)
to
foreach $a} (keys(%b))
on Pyramids, because index(s, '}' + 128) doesn't find a } with the
top bit set. This has been fixed.
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Configure had difficulties if the user's path had weird components.
Now Configure appends the user's path to its own.
Some machines need <netinet/in.h> included in order to define
certain macros for packing or unpacking network order data.
On Suns, the shared library is used by default. If it doesn't
contain something contained in /lib/libc.a, then Configure was
getting things wrong (such as gethostent()). Now Configure uses
the shared library if it's there in preference to libc.a.
When gcc was selected as the compiler, the cc flags defaulted to
-fpcc_struct_return. Unfortunately, the underlines should be hyphens.
Configure figures out if BSD shadow passwords are installed and
the getpw* routines now return slightly different data in the
affected fields.
Some of the prompts in Configure with regard to gid and uid types
were unclear as to their intended use. They are now a little
clearer.
Sometimes you could change a .h file and taintperl and suidperl
didn't get remade correctly because of missing dependencies
in the Makefile.
The README file was misleading about the fact that you have to
say "make test" before you can "cd t; TEST"
The reverse operator was busted in two different ways. Should work
better now. There are now regression tests for it.
Some of the optimizations that perl does are disabled after period
of time if perl decides they aren't doing any good. One of these
caused a string to be freed that was later referenced via another
pointer, causing core dumps. The free turned out to be unnecessary,
so it was removed.
The unless modifier was broken when run under the debugger, due to
the invert() routine in perl.y inverting the logic on the DB
subroutine call instead of the command the unless was modifying.
Configure vfork test was backwards. It now works like other defines.
The numeric switch optimization was broken, and caused code to be
bypassed. This has been fixed.
A split in a subroutine that has no target splits into @_.
Unfortunately, this wrongly freed any referenced arguments passed
in through @_, causing confusing behavior later in the program.
File globbing (<foo.*>) left one orphaned string each time it
called the shell to do the glob.
RCS expanded an unintended $Header in lib/perldb.pl. This has
been fixed simply by replacing the $ with a .
Some forward declarations of static functions were missing from
malloc.c.
There's a strut in malloc for mips machines to extend the overhead
union to the size of a double. This was also enabled for sparc
machines.
DEC risc machines are reported to have a buggy memcmp. I've put
some conditional code into perl.h which I think will undef MEMCMP
appropriately.
In perl.man.4, I documented the desirability of using parens even
where they aren't strictly necessary.
I've grandfathered "format stdout" to be the same as "format STDOUT".
Unary operators can be called with no argument. The corresponding
function call form using empty parens () didn't work right, though
it did for certain functions in 2.0. It now works in 3.0.
The string ordering tests were wrong for pairs of strings in which
one string was a prefix of the other. This affected lt, le, gt,
ge, and the sort operator when used with no subroutine.
$/ didn't work with the stupid code used when STDSTDIO was undefined.
The stupid code has been replaced with smarter code that can do
it right. Special thanks to Piet van Oostrum for the code.
Goulds work better if the union in STR is at an 8 byte boundary.
The fields were rearranged somewhat to provide this.
"sort keys %a" should now work right (though parens are still
desirable for readability).
bcopy() needed a forward declaration on some machines.
In x2p/Makefile.SH, added dependency on ../config.sh so that it
gets linked down from above if it got removed for some reason.
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A few of the new features: (18 Oct)
* Perl can now handle binary data correctly and has functions to pack and unpack binary structures into arrays or lists. You can now do arbitrary ioctl functions.
* You can now pass things to subroutines by reference.
* Debugger enhancements.
* An array or associative array may now appear in a local() list.
* Array values may now be interpolated into strings.
* Subroutine names are now distinguished by prefixing with &. You can call subroutines without using do, and without passing any argument list at all.
* You can use the new -u switch to cause perl to dump core so that you can run undump and produce a binary executable image. Alternately you can use the "dump" operator after initializing any variables and such.
* You can now chop lists.
* Perl now uses /bin/csh to do filename globbing, if available. This means that filenames with spaces or other strangenesses work right.
* New functions: mkdir and rmdir, getppid, getpgrp and setpgrp, getpriority and setpriority, chroot, ioctl and fcntl, flock, readlink, lstat, rindex, pack and unpack, read, warn, dbmopen and dbmclose, dump, reverse, defined, undef.
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