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Elixir Cross Referencer

# $FreeBSD$
# This use-after-free bug probably needs non-default settings to show up.

v1=nothing v2=nothing
trap 'trap "echo bad" USR1
v1=trap_received
v2=trap_invoked
:' USR1
kill -USR1 "$$"
[ "$v1.$v2" = trap_received.trap_invoked ]