1 files changed, 35 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/TypedArray/prototype/sort/sort-tonumber.js b/js/src/tests/test262/built-ins/TypedArray/prototype/sort/sort-tonumber.js
new file mode 100644
index 0000000000..dcc99bc87c
--- /dev/null
+++ b/js/src/tests/test262/built-ins/TypedArray/prototype/sort/sort-tonumber.js
@@ -0,0 +1,35 @@
+// Copyright (C) 2018 Mozilla Corporation. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-%typedarray%.prototype.sort
+description: The result of compareFn is immediately passed through ToNumber
+info: |
+  22.2.3.26 %TypedArray%.prototype.sort ( comparefn )
+
+  ...
+  2. If comparefn is not undefined, then
+    a. Let v be ? ToNumber(? Call(comparefn, undefined, « x, y »)).
+    b. If IsDetachedBuffer(buffer) is true, throw a TypeError exception.
+    ...
+  ...
+includes: [testTypedArray.js, detachArrayBuffer.js]
+features: [TypedArray]
+---*/
+
+testWithTypedArrayConstructors(function(TA) {
+  var ta = new TA(4);
+  var ab = ta.buffer;
+
+  var called = false;
+  ta.sort(function(a, b) {
+    // Detaching the buffer does not cause sort to throw.
+    $DETACHBUFFER(ab);
+    return {
+      [Symbol.toPrimitive]() { called = true; }
+    };
+  });
+
+  assert.sameValue(true, called);
+});
+
+reportCompare(0, 0);