Package: libipc-run-perl
Version: 0.78-2
Severity: normal
There's a memory leak with IPC::Run::run($cmd, '<', \undef)
[which runs a program with stdin closed]. The equivalent
IPC::Run::run($cmd, '<&-') does not have a memory leak. The
IPC::Run man page suggests IPC::Run::run($cmd, '<', \undef).
Consider this script:
#!/usr/bin/perl
use IPC::Run;
for my $i (0..100000) {
print STDERR "\r$i ";
IPC::Run::run(['test', '-t', '0'], '<', \undef);
my $e = $? >> 8;
print STDERR "$e";
}
Watch the memory usage of this program grow (e.g. type 'M'
in top); whereas the one below uses constant memory.
#!/usr/bin/perl
use IPC::Run;
for my $i (0..100000) {
print STDERR "\r$i ";
IPC::Run::run(['test', '-t', '0'], '<&-');
my $e = $? >> 8;
print STDERR "$e";
}
-- System Information:
Debian Release: 3.1
APT prefers testing
APT policy: (500, 'testing')
Architecture: i386 (i686)
Kernel: Linux 2.6.8-quack+20041128+quack.cs.berkeley.edu
Locale: LANG=C, LC_CTYPE=C (charmap=ANSI_X3.4-1968)
Versions of packages libipc-run-perl depends on:
ii libio-pty-perl 1:1.02-2 Perl module for pseudo tty IO
ii perl 5.8.4-6 Larry Wall's Practical Extraction
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