1 files changed, 13 insertions, 0 deletions
diff --git a/js/src/tests/non262/Array/from_length_setter.js b/js/src/tests/non262/Array/from_length_setter.js
new file mode 100644
index 0000000000..43f35f73e0
--- /dev/null
+++ b/js/src/tests/non262/Array/from_length_setter.js
@@ -0,0 +1,13 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/licenses/publicdomain/ */
+
+// Array.from calls a length setter if present.
+var hits = 0;
+function C() {}
+C.prototype = {set length(v) { hits++; }};
+C.from = Array.from;
+var copy = C.from(["A", "B"]);
+assertEq(hits, 1);
+
+if (typeof reportCompare === 'function')
+    reportCompare(0, 0);