bug: sed segfaults

Hello,

I've just encountered a bug in Owl sed and narrowed this bug down to the
shortest pattern that is triggering the bug:

mother!galaxy:~$ sed '/^\(\)$/d' /dev/null
Segmentation fault
mother!galaxy:~$ sed --version | head -n1
GNU sed version 4.1.4
mother!galaxy:~$ rpm -q sed
sed-4.1.4-owl1
mother!galaxy:~$

I've also checked sed in Ubuntu, their sed has no such bug:

galaxy@intruder:~$ sed '/^\(\)$/d' /dev/null
galaxy@intruder:~$ sed --version | head -n1
GNU sed version 4.1.5
galaxy@intruder:~$ dpkg -l sed | sed -n 6p
ii  sed            4.1.5-2        The GNU sed stream editor
galaxy@intruder:~$

-- 
(GM)


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