1 files changed, 85 insertions, 0 deletions
diff --git a/js/src/tests/ecma_6/extensions/DataView-set-arguments-detaching.js b/js/src/tests/ecma_6/extensions/DataView-set-arguments-detaching.js
new file mode 100644
index 000000000..b05ec480d
--- /dev/null
+++ b/js/src/tests/ecma_6/extensions/DataView-set-arguments-detaching.js
@@ -0,0 +1,85 @@
+// |reftest| skip-if(!xulRuntime.shell) -- needs detachArrayBuffer()
+/*
+ * Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/licenses/publicdomain/
+ */
+
+var gTestfile = "DataView-set-arguments-detaching.js";
+//-----------------------------------------------------------------------------
+var BUGNUMBER = 991981;
+var summary =
+  "DataView.prototype.set* methods shouldn't misbehave horribly if " +
+  "index-argument conversion detaches the ArrayBuffer being modified";
+
+print(BUGNUMBER + ": " + summary);
+
+/**************
+ * BEGIN TEST *
+ **************/
+
+function testIndex()
+{
+  var ab = new ArrayBuffer(0x1000);
+
+  var dv = new DataView(ab);
+
+  var start =
+    {
+      valueOf: function()
+      {
+        detachArrayBuffer(ab);
+        gc();
+        return 0xFFF;
+      }
+    };
+
+  var ok = false;
+  try
+  {
+    dv.setUint8(start, 0x42);
+  }
+  catch (e)
+  {
+    ok = true;
+  }
+  assertEq(ok, true, "should have thrown");
+  assertEq(ab.byteLength, 0, "should have been detached correctly");
+}
+testIndex();
+
+function testValue()
+{
+  var ab = new ArrayBuffer(0x100000);
+
+  var dv = new DataView(ab);
+
+  var value =
+    {
+      valueOf: function()
+      {
+        detachArrayBuffer(ab);
+        gc();
+        return 0x42;
+      }
+    };
+
+  var ok = false;
+  try
+  {
+    dv.setUint8(0xFFFFF, value);
+  }
+  catch (e)
+  {
+    ok = true;
+  }
+  assertEq(ok, true, "should have thrown");
+  assertEq(ab.byteLength, 0, "should have been detached correctly");
+}
+testValue();
+
+/******************************************************************************/
+
+if (typeof reportCompare === "function")
+  reportCompare(true, true);
+
+print("Tests complete");