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From: Konstantin Khlebnikov <koct9i@gmail.com>
Newsgroups: gnu.bash.bug
Subject: memory hog script crashes bash with segfault
Date: Fri, 11 Sep 2015 09:19:47 +0300
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$ ./bash -c ":(){ : $@$@;};: :"
Segmentation fault

$ ./bash --version
GNU bash, version 4.3.42(1)-release (x86_64-unknown-linux-gnu)
Copyright (C) 2013 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>

This is free software; you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.