1 files changed, 33 insertions, 0 deletions
diff --git a/js/src/tests/non262/Array/sort-typedarray-with-own-length.js b/js/src/tests/non262/Array/sort-typedarray-with-own-length.js
new file mode 100644
index 0000000000..18e4ea5cd6
--- /dev/null
+++ b/js/src/tests/non262/Array/sort-typedarray-with-own-length.js
@@ -0,0 +1,33 @@
+function sortTypedArray(comparator) {
+    // Create a typed array with three elements, but also add an own "length"
+    // property with the value `2` to restrict the range of elements which
+    // will be sorted by Array.prototype.sort().
+    var ta = new Int8Array([3, 2, 1]);
+    Object.defineProperty(ta, "length", {value: 2});
+
+    // Sort with Array.prototype.sort(), not %TypedArray%.prototype.sort()!
+    Array.prototype.sort.call(ta, comparator);
+
+    return ta;
+}
+
+// Comparators using the form |return a - b| are special-cased in
+// Array.prototype.sort().
+function optimizedComparator(a, b) {
+    return a - b;
+}
+
+// This comparator doesn't compile to the byte code sequence which gets
+// special-cased in Array.prototype.sort().
+function nonOptimizedComparator(a, b) {
+    var d = a - b;
+    return d;
+}
+
+// Both comparators should produce the same result.
+assertEq(sortTypedArray(optimizedComparator).toString(), "2,3,1");
+assertEq(sortTypedArray(nonOptimizedComparator).toString(), "2,3,1");
+
+
+if (typeof reportCompare === 'function')
+    reportCompare(0, 0);