global used where lexical was expected

[p5pRT]

Migrated from rt.perl.org#8225 (status was 'resolved')

Searchable as RT8225$

[p5pRT]

From jefpin@towers.crusoe.net

Created by jefpin@towers.crusoe.net

Perl is using the global $x where I expected it to use the lexical
$x instead.

  jefpin@​towers [10​:36am] ~ #219> bleadperl
  $x = "THIS";
  my $x = "THAT";
  print "${x} ${x}[2]\n";
  __END__
  THAT THIS[2]

It has to do with the fact that the next character is "[" or "{".

And when I introduce a lexically-scoped @​x, then "${x}[2]" is rendered
as just "[2]".

  jefpin@​towers [10​:36am] ~ #219> bleadperl
  $x = "THIS";
  my $x = "THAT";
  my @​x = (1..5);
  print "${x} ${x}[2]\n";
  __END__
  THAT [2]

This does not feel right to me. Perhaps this is a case of one of those
weighting mechanisms (where Perl decides what to render a variable-type
thing as) failing?

Perl Info

Flags:
    category=core
    severity=medium

Site configuration information for perl v5.7.2:

Configured by jefpin at Sun Jan  6 01:49:30 EST 2002.

Summary of my perl5 (revision 5.0 version 7 subversion 2 patch 14101) configuration:
  Platform:
    osname=linux, osvers=2.2.16-3, archname=i586-linux
    uname='linux towers.crusoe.net 2.2.16-3 #5 sat jul 8 11:42:18 edt 2000 i586 unknown '
    config_args='-DDEBUGGING -Dusedevel -Dprefix=/tmp/bleadperl -de'
    hint=recommended, useposix=true, d_sigaction=define
    usethreads=undef use5005threads=undef useithreads=undef usemultiplicity=undef
    useperlio=define d_sfio=undef uselargefiles=define usesocks=undef
    use64bitint=undef use64bitall=undef uselongdouble=undef
    usemymalloc=n, bincompat5005=define
  Compiler:
    cc='cc', ccflags ='-fno-strict-aliasing -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64',
    optimize='-O2',
    cppflags='-fno-strict-aliasing'
    ccversion='', gccversion='egcs-2.91.66 19990314/Linux (egcs-1.1.2 release)', gccosandvers=''
    intsize=4, longsize=4, ptrsize=4, doublesize=8, byteorder=1234
    d_longlong=define, longlongsize=8, d_longdbl=define, longdblsize=12
    ivtype='long', ivsize=4, nvtype='double', nvsize=8, Off_t='off_t', lseeksize=8
    alignbytes=4, prototype=define
  Linker and Libraries:
    ld='cc', ldflags =' -L/usr/local/lib'
    libpth=/usr/local/lib /lib /usr/lib
    libs=-lnsl -lndbm -lgdbm -ldb -ldl -lm -lc -lposix -lcrypt -lutil
    perllibs=-lnsl -ldl -lm -lc -lposix -lcrypt -lutil
    libc=/lib/libc-2.1.3.so, so=so, useshrplib=false, libperl=libperl.a
  Dynamic Linking:
    dlsrc=dl_dlopen.xs, dlext=so, d_dlsymun=undef, ccdlflags='-rdynamic'
    cccdlflags='-fpic', lddlflags='-shared -L/usr/local/lib'

Locally applied patches:
    DEVEL14041


@INC for perl v5.7.2:
    /tmp/bleadperl/lib/5.7.2/i586-linux
    /tmp/bleadperl/lib/5.7.2
    /tmp/bleadperl/lib/site_perl/5.7.2/i586-linux
    /tmp/bleadperl/lib/site_perl/5.7.2
    /tmp/bleadperl/lib/site_perl
    .


Environment for perl v5.7.2:
    HOME=/home/jefpin
    LANG=en_US
    LANGUAGE (unset)
    LD_LIBRARY_PATH (unset)
    LOGDIR (unset)
    PATH=/usr/bin:/bin:/usr/local/bin:/usr/X11R6/bin:/home/jefpin/bin:/tmp/bleadperl/bin
    PERL_BADLANG (unset)
    SHELL=/bin/tcsh

[p5pRT]

From @iabyn

(Just reviewing old Perl bugs).

This appears to be fixed in bleedperl by patch #18753, and in 5.8.1-tobe
by patch #18783.

Regards,

Dave M.

[p5pRT]

@iabyn - Status changed from 'open' to 'resolved'