[ID 20000414.003] Followup: script fails for perl versions newerthan 5.005_02

This is a bug report for perl from wolfgang.friebel@desy.de,
generated with the help of perlbug 1.28 running under perl v5.6.0.


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[Please enter your report here]
Hi,

the mail on the same subject yesterday did not contain a correct email address
and also not my signature. Therefore I did not receive any notification.
Further information: 

In the script

# Author: F Schrempp
$test='aaa';
$test='bbb' if $test =~ /aaa/;
$var = 'abc';
$tagnam = "";
while (<DATA>) {
  if (/SUBROUTINE/../END/){
    print "$tagnam\n" if defined $&;
    $tagnam=$&;
    next if (!/$var/);
  }
}
close(DATA);
__END__
SUBROUTINE HVHBVI
PHEP
END

I studied the bug a little furter: Obviously the heuristics for recognizing 
.. as an iteration operator fails only, if the statements $var=..
and next if ... are inserted. Then the value of $& does not preserve its value
through the iterations and the $& from the outer scope is taken. This behaviour is in all new versions of perl I tested. 

Wolfgang Friebel                                                                
    Deutsches Elektronen-Synchrotron DESY |  Phone:  +49 33762 77372          |
    Platanenallee 6                       |  Fax:    +49 33762 77216          |
    D-15738 Zeuthen  Germany              |  E-Mail: friebel@ifh.de       or  |
                                          |  E-mail: Wolfgang.Friebel@desy.de |
[Please do not change anything below this line]
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Flags:
    category=core
    severity=medium
---
Site configuration information for perl v5.6.0:

Configured by friebel at Tue Apr 11 17:48:23 MET DST 2000.

Summary of my perl5 (revision 5.0 version 6 subversion 0) configuration:
  Platform:
    osname=solaris, osvers=2.6, archname=sun4-solaris-thread
    uname='sunos ilos 5.6 generic_105181-16 sun4u sparc sunw,ultra-4 '
    config_args=''
    hint=previous, useposix=true, d_sigaction=define
    usethreads=define use5005threads=define useithreads=undef usemultiplicity=undef
    useperlio=undef d_sfio=undef uselargefiles=define 
    use64bitint=undef use64bitall=undef uselongdouble=undef usesocks=undef
  Compiler:
    cc='cc', optimize='-O', gccversion=
    cppflags='-D_REENTRANT -I/usr/local/include -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64'
    ccflags ='-D_REENTRANT -I/usr/local/include -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64'
    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
    ivtype='long', ivsize=4, nvtype='double', nvsize=8, Off_t='off_t', lseeksize=8
    alignbytes=8, usemymalloc=y, prototype=define
  Linker and Libraries:
    ld='cc', ldflags ='-L/usr/local/lib -R/usr/local/lib'
    libpth=/usr/local/lib /lib /usr/lib /usr/ccs/lib
    libs=-lsocket -lnsl -lgdbm -ldb -ldl -lm -lposix4 -lpthread -lc -lcrypt -lsec
    libc=/lib/libc.so, so=so, useshrplib=false, libperl=libperl.a
  Dynamic Linking:
    dlsrc=dl_dlopen.xs, dlext=so, d_dlsymun=undef, ccdlflags=' '
    cccdlflags='-KPIC', lddlflags='-G -L/usr/local/lib'

Locally applied patches:
    

---
@INC for perl v5.6.0:
    /products/perl/5.6.0/lib/sun4-solaris-thread
    /products/perl/5.6.0/lib
    /products/perl/5.6.0/lib/site_perl/sun4-solaris-thread
    /products/perl/5.6.0/lib/site_perl
    /products/perl/5.6.0/lib/site_perl
    .

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Environment for perl v5.6.0:
    HOME=/home/jupiter/friebel
    LANG=C
    LANGUAGE (unset)
    LD_LIBRARY_PATH=/usr/openwin/lib:/usr/dt/lib:/usr/local/lib
    LOGDIR (unset)
    PATH=/products/perl/5.6.0/bin:/home/jupiter/friebel/bin.SunOS_5:/home/jupiter/friebel/bin.SunOS:/home/jupiter/friebel/bin:/home/jupiter/friebel/scripts:/usr/sue/bin:/usr/bin:/usr/ucb:/usr/sbin:/opt/SUNWspro/bin:/usr/ccs/bin:/usr/openwin/bin:/usr/local/X11/bin:/usr/local/bin:/usr/local/bin/scripts::.:/cern/pro/bin
    PERL_BADLANG (unset)
    SHELL=/bin/zsh

• [ID 20000414.003] Followup: script fails for perl versions newerthan 5.005_02 by Wolfgang Friebel