Initialized variable incorrectly mentioned in "uninitialized value" warning

[p5pRT]

Migrated from rt.perl.org#77994 (status was 'resolved')

Searchable as RT77994$

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From @mjdominus

Created by @mjdominus

% perl -wle 'opendir $d\, "." or die; print "ok"; print ">>"\, fileno $d' ok Use of uninitialized value $d in print at -e line 1.

The error message claims that $d is uninitialized\, which is incorrect. $d contains a dirhandle. The message is generated because fileno($d) is returning undefined.

Perl Info

``` Flags: category=core severity=low Site configuration information for perl 5.10.0: Configured by Debian Project at Thu Oct 1 22:38:45 UTC 2009. Summary of my perl5 (revision 5 version 10 subversion 0) configuration: Platform: osname=linux, osvers=2.6.24-23-server, archname=i486-linux-gnu-thread-multi uname='linux vernadsky 2.6.24-23-server #1 smp wed apr 1 22:22:14 utc 2009 i686 gnulinux ' config_args='-Dusethreads -Duselargefiles -Dccflags=-DDEBIAN -Dcccdlflags=-fPIC -Darchname=i486-linux-gnu -Dprefix=/usr -Dprivlib=/usr/share/perl/5.10 -Darchlib=/usr/lib/perl/5.10 -Dvendorprefix=/usr -Dvendorlib=/usr/share/perl5 -Dvendorarch=/usr/lib/perl5 -Dsiteprefix=/usr/local -Dsitelib=/usr/local/share/perl/5.10.0 -Dsitearch=/usr/local/lib/perl/5.10.0 -Dman1dir=/usr/share/man/man1 -Dman3dir=/usr/share/man/man3 -Dsiteman1dir=/usr/local/man/man1 -Dsiteman3dir=/usr/local/man/man3 -Dman1ext=1 -Dman3ext=3perl -Dpager=/usr/bin/sensible-pager -Uafs -Ud_csh -Ud_ualarm -Uusesfio -Uusenm -DDEBUGGING=-g -Doptimize=-O2 -Duseshrplib -Dlibperl=libperl.so.5.10.0 -Dd_dosuid -des' hint=recommended, useposix=true, d_sigaction=define useithreads=define, usemultiplicity=define useperlio=define, d_sfio=undef, uselargefiles=define, usesocks=undef use64bitint=undef, use64bitall=undef, uselongdouble=undef usemymalloc=n, bincompat5005=undef Compiler: cc='cc', ccflags ='-D_REENTRANT -D_GNU_SOURCE -DDEBIAN -fno-strict-aliasing -pipe -I/usr/local/include -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64', optimize='-O2 -g', cppflags='-D_REENTRANT -D_GNU_SOURCE -DDEBIAN -fno-strict-aliasing -pipe -I/usr/local/include' ccversion='', gccversion='4.4.1', 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 /usr/lib64 libs=-lgdbm -lgdbm_compat -ldb -ldl -lm -lpthread -lc -lcrypt perllibs=-ldl -lm -lpthread -lc -lcrypt libc=/lib/libc-2.10.1.so, so=so, useshrplib=true, libperl=libperl.so.5.10.0 gnulibc_version='2.10.1' Dynamic Linking: dlsrc=dl_dlopen.xs, dlext=so, d_dlsymun=undef, ccdlflags='-Wl,-E' cccdlflags='-fPIC', lddlflags='-shared -O2 -g -L/usr/local/lib' Locally applied patches: @INC for perl 5.10.0: /etc/perl /usr/local/lib/perl/5.10.0 /usr/local/share/perl/5.10.0 /usr/lib/perl5 /usr/share/perl5 /usr/lib/perl/5.10 /usr/share/perl/5.10 /usr/local/lib/site_perl . Environment for perl 5.10.0: HOME=/home/mjd LANG=en_US.UTF-8 LANGUAGE (unset) LD_LIBRARY_PATH=/lib:/usr/lib:/usr/X11R6/lib LOGDIR (unset) PATH=/home/mjd/bin:/home/mjd/misc/blog/bin:/usr/local/bin:/bin:/usr/bin:/usr/X11R6/bin:/usr/games:/sbin:/usr/sbin:/usr/local/bin/X11R6:/usr/local/bin/mh:/data/mysql/bin:/usr/local/bin/pbm:/usr/local/bin/ezmlm:/home/mjd/TPI/bin:/usr/local/teTeX/bin:/usr/local/mysql/bin PERL_BADLANG (unset) SHELL=/bin/bash ```

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From @cpansprout

This was fixed in perl 5.10.1\, although a similar bug (#72090) is still present.

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@cpansprout - Status changed from 'new' to 'resolved'

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From @abigail

On Wed\, Sep 22\, 2010 at 09​:54​:43AM -0700\, Mark-Jason Dominus wrote​:

# New Ticket Created by Mark-Jason Dominus # Please include the string​: [perl #77994] # in the subject line of all future correspondence about this issue. # \<URL​: http​://rt.perl.org/rt3/Ticket/Display.html?id=77994 >

This is a bug report for perl from mjd@​plover.com\, generated with the help of perlbug 1.36 running under perl 5.10.0.

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

% perl -wle 'opendir $d\, "." or die; print "ok"; print ">>"\, fileno $d' ok Use of uninitialized value $d in print at -e line 1.

The error message claims that $d is uninitialized\, which is incorrect. $d contains a dirhandle. The message is generated because fileno($d) is returning undefined.

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

I can confirm this is still the case in 5.12.2 and in blead.

Abigail