Package: perl
Version: 5.12.3-6
Severity: grave
Justification: causes non-serious data loss
When stdout and stderr are both redirected to a pipe, some of the
output data can be lost!
I can reproduce this bug with:
------------------------------------------------------------
#!/usr/bin/env perl
use strict;
use SVN::Client;
my $ctx = new SVN::Client;
$ctx->log(\@ARGV, 'HEAD', 1, 0, undef, \&log_receiver);
sub log_receiver
{
print "@_[0..4]\n";
}
------------------------------------------------------------
For instance, with a large local repository:
xvii% ./svn2log wd 2>&1 | cat >| out; ls -l out
-rw-r--r-- 1 vinc17 vinc17 5398648 2011-05-17 04:45:57 out
xvii% ./svn2log wd 2>&1 | cat >| out; ls -l out
-rw-r--r-- 1 vinc17 vinc17 3993720 2011-05-17 04:45:59 out
xvii% ./svn2log wd 2>&1 | cat >| out; ls -l out
-rw-r--r-- 1 vinc17 vinc17 5398648 2011-05-17 04:46:02 out
xvii% ./svn2log wd 2>&1 | cat >| out; ls -l out
-rw-r--r-- 1 vinc17 vinc17 5398648 2011-05-17 04:46:05 out
xvii% ./svn2log wd 2>&1 | cat >| out; ls -l out
-rw-r--r-- 1 vinc17 vinc17 5398648 2011-05-17 04:46:07 out
xvii% ./svn2log wd 2>&1 | cat >| out; ls -l out
-rw-r--r-- 1 vinc17 vinc17 5398648 2011-05-17 04:46:09 out
xvii% ./svn2log wd 2>&1 | cat >| out; ls -l out
-rw-r--r-- 1 vinc17 vinc17 5398648 2011-05-17 04:46:12 out
xvii% ./svn2log wd 2>&1 | cat >| out; ls -l out
-rw-r--r-- 1 vinc17 vinc17 4943992 2011-05-17 04:46:14 out
The shell doesn't matter: same problem with zsh, bash and dash.
The problem is even more visible when using "less".
./svn2log wd 2>&1 | less -M
then type [End]. The number of lines changes each time.
I couldn't reproduce the problem with a remote repository,
perhaps because of some race condition that occurs when one
gets data much faster.
The problem doesn't occur if I don't redirect stderr.
-- System Information:
Debian Release: wheezy/sid
APT prefers unstable
APT policy: (500, 'unstable'), (500, 'testing'), (500, 'stable'), (1,
'experimental')
Architecture: amd64 (x86_64)
Kernel: Linux 2.6.38-2-amd64 (SMP w/2 CPU cores)
Locale: LANG=POSIX, LC_CTYPE=en_US.ISO8859-1 (charmap=ISO-8859-1)
Shell: /bin/sh linked to /bin/dash
Versions of packages perl depends on:
ii libbz2-1.0 1.0.5-6 high-quality block-sorting file co
ii libc6 2.13-4 Embedded GNU C Library: Shared lib
ii libdb5.1 5.1.25-10 Berkeley v5.1 Database Libraries [
ii libgdbm3 1.8.3-9 GNU dbm database routines (runtime
ii perl-base 5.12.3-6 minimal Perl system
ii perl-modules 5.12.3-6 Core Perl modules
ii zlib1g 1:1.2.3.4.dfsg-3 compression library - runtime
Versions of packages perl recommends:
ii netbase 4.45 Basic TCP/IP networking system
Versions of packages perl suggests:
ii libterm-readline-gnu-perl 1.20-1+b1 Perl extension for the GNU ReadLin
ii make 3.81-8.1 An utility for Directing compilati
ii perl-doc 5.12.3-6 Perl documentation
-- no debconf information
--
To UNSUBSCRIBE, email to debian-bugs-rc-requ...@lists.debian.org
with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org
