xref: /freebsd/bin/sh/tests/expansion/set-u3.0 (revision f59bb61e1eb4d1e4fc3c60cc14779d0668267cb2) 
1
2set -u
3unset x
4v=$( (eval ': $((x))') 2>&1 >/dev/null)
5[ $? -ne 0 ] && [ -n "$v" ]
6