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[ID 19991110.001] study and //g bug?

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From:
Philip Kendall
Date:
November 10, 1999 03:59
Subject:
[ID 19991110.001] study and //g bug?
Message ID:
199911101159.LAA10874@cassf.ast.cam.ac.uk
This is a bug report for perl from pak@ast.cam.ac.uk,
generated with the help of perlbug 1.26 running under perl 5.00502.


-----------------------------------------------------------------
[Please enter your report here]

If I run the following Perl program:

$field="disk whi";
study $field;
print "Studied!\n";
print "Found ",++$i, " matches\n" while($field=~/disk/g);

it gets stuck in an infinite loop, whereas if I comment out the
study $field line, it works fine and just returns one match.

[Please do not change anything below this line]
-----------------------------------------------------------------

---
Site configuration information for perl 5.00502:

Configured by jarle at Tue Jan 12 21:32:30 BST 1999.

Summary of my perl5 (5.0 patchlevel 5 subversion 2) configuration:
  Platform:
    osname=solaris, osvers=2.6, archname=sun4-solaris
    uname='sunos cass28 5.6 generic_105181-09 sun4u sparc sunw,ultra-1 '
    hint=recommended, useposix=true, d_sigaction=define
    usethreads=undef useperlio=undef d_sfio=undef
  Compiler:
    cc='cc', optimize='-O', gccversion=
    cppflags='-I/usr/local/include -I/opt/local/include'
    ccflags ='-I/usr/local/include -I/opt/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=n, prototype=define
  Linker and Libraries:
    ld='cc', ldflags =' -L/usr/local/lib -L/opt/local/lib -L/opt/gnu/lib'
    libpth=/usr/local/lib /opt/local/lib /opt/gnu/lib /lib /usr/lib /usr/ccs/lib
    libs=-lsocket -lnsl -ldl -lm -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='-KPIC', lddlflags='-G -L/usr/local/lib -L/opt/local/lib -L/opt/gnu/lib'

Locally applied patches:
    

---
@INC for perl 5.00502:
    /usr/local/lib/perl5/5.00502/sun4-solaris
    /usr/local/lib/perl5/5.00502
    /usr/local/lib/perl5/site_perl/5.005/sun4-solaris
    /usr/local/lib/perl5/site_perl/5.005
    .

---
Environment for perl 5.00502:
    HOME=/home/pak
    LANG (unset)
    LD_LIBRARY_PATH=/usr/lib:/opt/X11R6/lib:/usr/local/lib:/usr/openwin/lib:/usr/ucblib
    LOGDIR (unset)
    PATH=/opt/SUNWspro/bin:/usr/bin:/usr/ucb:/usr/ccs/bin:/usr/sbin:/usr/openwin/bin:/opt/X11R6/bin:/usr/local/bin:/usr/local/teTeX/bin/current:.:/home/pak/bin
    PERL_BADLANG (unset)
    SHELL=/bin/tcsh

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