busybox/shell/ash_test/ash-vars/var-do-not-collapse-arithmetic-expansion-at-parse-time.tests

unset a
echo $((3 + ${a:=$((4 + 5))}))
echo $a
ash: remove arithmetic expansion collapsing at parse time Collapsing arithmetic expansion is incorrect when the inner arithmetic expansion is a part of a parameter expansion. Test case: unset a echo $((3 + ${a:=$((4 + 5))})) echo $a Old result: 12 (4 + 5) New result: 12 9 Based on commit bb777a6 from git://git.kernel.org/pub/scm/utils/dash/dash.git by Herbert Xu function old new delta readtoken1 3180 3163 -17 Signed-off-by: Ron Yorston <rmy@pobox.com> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com> 2015-05-18 13:26:16 +05:30			`unset a`
			`echo $((3 + ${a:=$((4 + 5))}))`
			`echo $a`