[Bug 1062576] New: memory leak when including a file with "use utf8"

[Red Hat Bugzilla]

https://bugzilla.redhat.com/show_bug.cgi?id=1062576

            Bug ID: 1062576
           Summary: memory leak when including a file with "use utf8"
           Product: Fedora
           Version: 19
         Component: perl
          Severity: medium
          Assignee: jplesnik(a)redhat.com
          Reporter: lav(a)yars.free.net
        QA Contact: extras-qa(a)fedoraproject.org
                CC: cweyl(a)alumni.drew.edu, iarnell(a)gmail.com,
                    jplesnik(a)redhat.com, kasal(a)ucw.cz,
                    perl-devel(a)lists.fedoraproject.org, ppisar(a)redhat.com,
                    psabata(a)redhat.com, rc040203(a)freenet.de,
                    tcallawa(a)redhat.com



Description of problem:
Every time perl includes a file with "use utf8" and text constants it leaks
memory.


Version-Release number of selected component (if applicable):
perl-5.16.3-266.fc19.x86_64

How reproducible:
always

Steps to Reproduce:
1. run the test program below
2. watch as memory usage grows

Here is the test program:
-------------------------
my $mem = 0;
sub report_memory () {
        my $next_mem = qx[ps -p $$ -o size=]+0;
        printf "%+8d = %8d K\n", $next_mem-$mem, $next_mem; $mem = $next_mem;
}

for (0..1e5) {
        do 'x.inc';
        report_memory unless $_ % 1e4;
}
-------------------------

x.inc contains:
-------------------------
use utf8;
$x='x';
-------------------------

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