1 files changed, 81 insertions, 0 deletions
diff --git a/js/src/tests/ecma_6/extensions/DataView-construct-arguments-detaching.js b/js/src/tests/ecma_6/extensions/DataView-construct-arguments-detaching.js
new file mode 100644
index 000000000..14659f1d2
--- /dev/null
+++ b/js/src/tests/ecma_6/extensions/DataView-construct-arguments-detaching.js
@@ -0,0 +1,81 @@
+// |reftest| skip-if(!xulRuntime.shell) -- needs detachArrayBuffer()
+/*
+ * Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/licenses/publicdomain/
+ */
+
+var gTestfile = "DataView-construct-arguments-detaching.js";
+//-----------------------------------------------------------------------------
+var BUGNUMBER = 991981;
+var summary =
+  "new DataView(...) shouldn't misbehave horribly if index-argument " +
+  "conversion detaches the ArrayBuffer to be viewed";
+
+print(BUGNUMBER + ": " + summary);
+
+/**************
+ * BEGIN TEST *
+ **************/
+
+function testByteOffset()
+{
+  var ab = new ArrayBuffer(0x1000);
+
+  var start =
+    {
+      valueOf: function()
+      {
+        detachArrayBuffer(ab);
+        gc();
+        return 0x800;
+      }
+    };
+
+  var ok = false;
+  try
+  {
+    new DataView(ab, start);
+  }
+  catch (e)
+  {
+    ok = true;
+  }
+  assertEq(ok, true, "byteOffset weirdness should have thrown");
+  assertEq(ab.byteLength, 0, "detaching should work for byteOffset weirdness");
+}
+testByteOffset();
+
+function testByteLength()
+{
+  var ab = new ArrayBuffer(0x1000);
+
+  var len =
+    {
+      valueOf: function()
+      {
+        detachArrayBuffer(ab);
+        gc();
+        return 0x800;
+      }
+    };
+
+  var ok = false;
+  try
+  {
+    new DataView(ab, 0x800, len);
+  }
+  catch (e)
+  {
+    ok = true;
+  }
+  assertEq(ok, true, "byteLength weirdness should have thrown");
+  assertEq(ab.byteLength, 0, "detaching should work for byteLength weirdness");
+}
+testByteLength();
+
+/******************************************************************************/
+
+if (typeof reportCompare === "function")
+  reportCompare(true, true);
+
+print("Tests complete");