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+++ This bug was initially created as a clone of Bug #767597 +++

Referring non-matched named capture leaks memory:

for (1..10_000_000) {
  if ("foo" =~ /(foo|(?<capture>bar))?/) {
    my $capture = $+{capture}
  }
}


This is tracked by upstream (https://rt.perl.org/rt3/Public/Bug/Display.html?id=78266) and fixed by commit 7402016d87474403eea5c52dc2c071f68cbbe25c.

----

RHEL-6.2 (perl-5.10.1-119.el6_1.1.x86_64) affected.

Named captures are not supported by perl-5.8 and older. This is not an issue for older RHEL releases.

Created attachment 547216 [details]
Upstream fix applicable to perl-5.10.1

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

http://rhn.redhat.com/errata/RHBA-2013-1534.html