1 files changed, 35 insertions, 0 deletions
diff --git a/js/src/tests/non262/extensions/element-setting-ToNumber-detaches.js b/js/src/tests/non262/extensions/element-setting-ToNumber-detaches.js
new file mode 100644
index 0000000000..0d4b6f9c33
--- /dev/null
+++ b/js/src/tests/non262/extensions/element-setting-ToNumber-detaches.js
@@ -0,0 +1,35 @@
+/*
+ * Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/licenses/publicdomain/
+ */
+"use strict"; // make test fail when limitation below is fixed
+
+var gTestfile = 'element-setting-ToNumber-detaches.js';
+//-----------------------------------------------------------------------------
+var BUGNUMBER = 1001547;
+var summary =
+  "Don't assert assigning into memory detached while converting the value to " +
+  "assign into a number";
+
+print(BUGNUMBER + ": " + summary);
+
+/**************
+ * BEGIN TEST *
+ **************/
+
+// Technically per current spec the element-sets should throw in strict mode,
+// but we just silently do nothing for now, somewhat due to limitations of our
+// internal MOP (which can't easily say "try this special behavior, else fall
+// back on normal logic"), somewhat because it's consistent with current
+// behavior (as of this test's addition) for out-of-bounds sets.
+
+var ab = new ArrayBuffer(64);
+var ta = new Uint32Array(ab);
+ta[4] = { valueOf() { detachArrayBuffer(ab); return 5; } };
+
+/******************************************************************************/
+
+if (typeof reportCompare === "function")
+  reportCompare(true, true);
+
+print("Tests complete");