Re: [FWP] 4294967295

[John Porter <jdporter@min.net>]

VLB wrote:
> At 09:46 -0400 07/13/1999, John Porter wrote:
> >> 5_57 on what?
> >
> >Since there seems to be some continued interest in this on FWP, allow
> >me to post a short session which demonstrates the problem:
> 
> Repeating - on what hardware / OS?  What's the output of Perl -V look like?
> 
> I believe you see this. But I don't and neither does anyone else I have
> found.
> 
>
> >Oh, btw: I get identical results on 5_02 and 5_57.
> 
> I cannot reproduce your results on 5.005_02 on Sun Solaris, i386 FreeBSD or
> MkLinux (RedHat on PPC). Chris Nandor cannot reproduce your results on
> 5.005_57 on LinuxPPC (Power PC).  There's more going on here than a simple
> read_only variable.

Oh, sorry.
perl -V for my 5_02 and 5_57 are below.
>From the looks of it, I'd guess the problem is related to the fact that
they were both compiled with threads, which of course does strange things,
as mentioned in perldelta:

     If threads are enabled, then some caveats apply. @_ and $_
     become lexical variables.  The effect of this should be
     largely transparent to the user, but there are some boundary
     conditions under which user will need to be aware of the
     issues.  For example, local(@_) results in a "Can't localize
     lexical variable @_ ..." message.

As a verification, I tried this:

	% perl
	local(@_);
	Can't localize lexical variable @_ at - line 1.

(Interestingly, no such error occurs with local($_) !!!)

John Porter




Summary of my perl5 (5.0 patchlevel 5 subversion 2) configuration:
  Platform:
    osname=solaris, osvers=2.6, archname=sun4-solaris-thread
    uname='sunos prod5 5.6 generic_105181-08 sun4u sparc sunw,ultra-enterprise '
    hint=recommended, useposix=true, d_sigaction=define
    usethreads=define useperlio=undef d_sfio=undef
  Compiler:
    cc='gcc -B/usr/ccs/bin/', optimize='-O', gccversion=2.8.1
    cppflags='-D_REENTRANT -I/usr/local/include'
    ccflags ='-D_REENTRANT -I/usr/local/include'
    stdchar='unsigned char', d_stdstdio=define, usevfork=false
    intsize=4, longsize=4, ptrsize=4, doublesize=8
    d_longlong=define, longlongsize=8, d_longdbl=define, longdblsize=16
    alignbytes=8, usemymalloc=y, prototype=define
  Linker and Libraries:
    ld='gcc -B/usr/ccs/bin/', ldflags =' -L/usr/local/lib'
    libpth=/usr/local/lib /lib /usr/lib /usr/ccs/lib
    libs=-lsocket -lnsl -lgdbm -ldb -ldl -lm -lposix4 -lpthread -lc -lcrypt
    libc=/lib/libc.so, so=so, useshrplib=false, libperl=libperl.a
  Dynamic Linking:
    dlsrc=dl_dlopen.xs, dlext=so, d_dlsymun=undef, ccdlflags=' '
    cccdlflags='-fPIC', lddlflags='-G -L/usr/local/lib'


Characteristics of this binary (from libperl): 
  Built under solaris
  Compiled at Oct 22 1998 18:17:59
  @INC:
    /usr/local/lib/perl5/5.00502/sun4-solaris-thread
    /usr/local/lib/perl5/5.00502
    /usr/local/lib/perl5/site_perl/5.005/sun4-solaris-thread
    /usr/local/lib/perl5/site_perl/5.005
    .




Summary of my perl5 (revision 5.0 version 5 subversion 57) configuration:
  Platform:
    osname=solaris, osvers=2.6, archname=sun4-solaris-thread-multi
    uname='sunos persia 5.6 generic_105181-09 sun4u sparc sunw,ultra-60 '
    config_args=''
    hint=previous, useposix=true, d_sigaction=define
    usethreads=define useperlio=undef d_sfio=undef
    use64bits=undef usemultiplicity=define
  Compiler:
    cc='gcc', optimize='-O', gccversion=2.8.1
    cppflags='-B/usr/ccs/bin/ -D_REENTRANT -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -DUSE_LONG_LONG -I/usr/local/include'
    ccflags ='-B/usr/ccs/bin/ -D_REENTRANT -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -DUSE_LONG_LONG -I/usr/local/include'
    stdchar='unsigned char', d_stdstdio=define, usevfork=false
    intsize=4, longsize=4, ptrsize=4, doublesize=8
    d_longlong=define, longlongsize=8, d_longdbl=define, longdblsize=16
    alignbytes=8, usemymalloc=y, prototype=define
  Linker and Libraries:
    ld='gcc', ldflags ='  -L/usr/local/lib'
    libpth=/usr/local/lib /lib /usr/lib /usr/ccs/lib
    libs=-lsocket -lnsl -lgdbm -ldb -ldl -lm -lposix4 -lpthread -lc -lcrypt
    libc=/lib/libc.so, so=so, useshrplib=false, libperl=libperl.a
  Dynamic Linking:
    dlsrc=dl_dlopen.xs, dlext=so, d_dlsymun=undef, ccdlflags=' -Wl,-E'
    cccdlflags='-fPIC', lddlflags=' -W,l-E -G -L/usr/local/lib'


Characteristics of this binary (from libperl): 
  Compile-time options: MULTIPLICITY
  Built under solaris
  Compiled at May 28 1999 11:30:56
  @INC:
    /export/home/jdporter/perl-experimental/lib/5.00557/sun4-solaris-thread-multi
    /export/home/jdporter/perl-experimental/lib/5.00557
    /export/home/jdporter/perl-experimental/lib/site_perl/5.00557/sun4-solaris-thread-multi
    /export/home/jdporter/perl-experimental/lib/site_perl/5.00557
    .


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