Comment 2 for bug 1337827

It's the infinite loop of trapped SIGTERMs that raises this exception, and can be performed in any way that deliberately infinitely loops a signal trap.

$ bash -c 'trap "kill 0" EXIT SIGTERM'
Segmentation fault (core dumped)

$ bash -c 'trap "kill $$" EXIT SIGTERM'
Segmentation fault (core dumped)

$ bash -c 'trap "kill 0" SIGTERM; kill 0'
Segmentation fault (core dumped)

$ bash -c 'trap "kill -USR1 $$" SIGUSR1; while :; do :; done' &
[1] 18769
$ kill -USR1 18769
[1]+ Segmentation fault (core dumped) bash -c 'trap "kill -USR1 $$" SIGUSR1; while :; do :; done'

bash_4.3-6ubuntu1 is the first version that exhibits this behaviour; versions <= bash_4.2-5ubuntu3 are not susceptible.

$ bash_4.2-5ubuntu3_amd64/bin/bash -c 'trap "echo trap; kill 0" EXIT SIGTERM'
trap
trap
trap

$ bash_4.2-5ubuntu3_amd64/bin/bash -c 'trap "echo trap; kill 0" SIGTERM; kill 0'
trap
trap

$ bash_4.3-6ubuntu1_amd64/bin/bash -c 'trap "echo trap; kill 0" EXIT SIGTERM'
trap
trap
trap
trap
[...]
trap
trap
Segmentation fault (core dumped)