1 files changed, 48 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/cacheir/function-length.js b/js/src/jit-test/tests/cacheir/function-length.js
new file mode 100644
index 0000000000..14e852683f
--- /dev/null
+++ b/js/src/jit-test/tests/cacheir/function-length.js
@@ -0,0 +1,48 @@
+function interpreted() {
+    for (var i = 0; i < 50; i++) {
+        var f = function () {};
+        assertEq(f.length, 0);
+    }
+
+    for (var i = 0; i < 50; i++) {
+        var f = function (a, b) {};
+        assertEq(f.length, 2);
+    }
+}
+
+function bound() {
+    for (var i = 0; i < 50; i++) {
+        var f = (function () {}).bind({});
+        assertEq(f.length, 0);
+    }
+
+    for (var i = 0; i < 50; i++) {
+        var f = (function (a, b) {}).bind({});
+        assertEq(f.length, 2);
+    }
+}
+
+function native() {
+    for (var i = 0; i < 50; i++) {
+        // Use the interpreted function for getting the IC generated in the first place.
+        var f = function (a) {};
+
+        if (i == 15) {
+            f = Math.sin;
+        } else if (i == 20) {
+            f = Math.cos;
+        } else if (i == 25) {
+            f = Math.ceil;
+        } else if (i == 30) {
+            f = Math.tan;
+        } else if (i == 35) {
+            f = Math.tanh;
+        }
+
+        assertEq(f.length, 1);
+    }
+}
+
+interpreted();
+bound();
+native();
+\ No newline at end of file