sh: arith: Add a test for a bug in the dash arith code,

which I plan to import at some point.
Our current code handles it fine and it should stay that way.

1 files changed, 14 insertions, 0 deletions

diff --git a/tools/regression/bin/sh/expansion/arith3.0 b/tools/regression/bin/sh/expansion/arith3.0
new file mode 100644
index 0000000..b69159d
--- /dev/null
+++ b/tools/regression/bin/sh/expansion/arith3.0
@@ -0,0 +1,14 @@
+# $FreeBSD$
+
+failures=0
+
+check() {
+	if [ $(($1)) != $2 ]; then
+		failures=$((failures+1))
+		echo "For $1, expected $2 actual $(($1))"
+	fi
+}
+
+check "1 << 1 + 1 | 1" 5
+
+exit $((failures != 0))