1 files changed, 28 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors-bigint/buffer-arg/typedarray-backed-by-sharedarraybuffer.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors-bigint/buffer-arg/typedarray-backed-by-sharedarraybuffer.js
new file mode 100644
index 0000000000..d72633b53c
--- /dev/null
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors-bigint/buffer-arg/typedarray-backed-by-sharedarraybuffer.js
@@ -0,0 +1,28 @@
+// |reftest| skip-if(!this.hasOwnProperty('SharedArrayBuffer')) -- SharedArrayBuffer is not enabled unconditionally
+// Copyright (C) 2017 Mozilla Corporation. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-typedarray-typedarray
+description: >
+  Passing a SharedArrayBuffer-backed TypedArray to a TypedArray constructor
+  produces an ArrayBuffer-backed TypedArray.
+includes: [testBigIntTypedArray.js]
+features: [BigInt, SharedArrayBuffer, TypedArray]
+---*/
+
+var sab = new SharedArrayBuffer(8);
+
+testWithBigIntTypedArrayConstructors(function(View1) {
+  var ta1 = new View1(sab);
+  testWithBigIntTypedArrayConstructors(function(View2) {
+    var ta2 = new View2(ta1);
+    assert.sameValue(
+      ta2.buffer.constructor,
+      ArrayBuffer,
+      "TypedArray of SharedArrayBuffer-backed TypedArray is ArrayBuffer-backed"
+    );
+  });
+});
+
+reportCompare(0, 0);