Subject: bug#19827: sed 4.2.2 hangs when passed specially crafted program

From: Alexander Nasonov <[email-masked]>
Date: Tue, 10 Feb 2015 08:18:27 +0000

This was found by the afl fuzzer http://lcamtuf.coredump.cx/afl/

$ echo | gsed -f afl-out/crashes/id*03,*
^C

$ cat afl-out/crashes/id*03,*
$G
$D

$ hexdump -C afl-out/crashes/id*03,*
00000000  24 47 0a 24 44 0a 0a 0a                           |$G.$D...|
00000008

or

echo | gsed -e '$G
> $D
> '
^C

I ran the fuzzer and the test on NetBSD amd64 7.99.x.

Alex