1 files changed, 39 insertions, 0 deletions
diff --git a/js/src/tests/non262/extensions/clone-sab-failure.js b/js/src/tests/non262/extensions/clone-sab-failure.js
new file mode 100644
index 0000000000..ff24dcb9e5
--- /dev/null
+++ b/js/src/tests/non262/extensions/clone-sab-failure.js
@@ -0,0 +1,39 @@
+// |reftest| skip-if(!xulRuntime.shell)
+/* -*- Mode: js2; tab-width: 40; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/*
+ * Any copyright is dedicated to the Public Domain.
+ * https://creativecommons.org/publicdomain/zero/1.0/
+ */
+
+// Failure to serialize an object containing a SAB should not leave the SAB's
+// rawbuffer's reference count incremented.
+
+if (!this.SharedArrayBuffer || !this.sharedArrayRawBufferRefcount) {
+    reportCompare(true,true);
+    quit(0);
+}
+
+let x = new SharedArrayBuffer(1);
+
+// Initially the reference count is 1.
+assertEq(sharedArrayRawBufferRefcount(x), 1);
+
+let y = serialize(x, [], {SharedArrayBuffer: 'allow'});
+
+// Serializing it successfully increments the reference count.
+assertEq(sharedArrayRawBufferRefcount(x), 2);
+
+// Serializing something containing a function should throw.
+var failed = false;
+try {
+    serialize([x, function () {}]);
+}
+catch (e) {
+    failed = true;
+}
+assertEq(failed, true);
+
+// Serializing the SAB unsuccessfully does not increment the reference count.
+assertEq(sharedArrayRawBufferRefcount(x), 2);
+
+reportCompare(true, true);