diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/parallel/bug971385.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/parallel/bug971385.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,10 @@
+// |jit-test| slow;
+load(libdir + "asserts.js");
+
+function f() {
+    Array.buildPar(6, function() {});
+    f();
+}
+
+if (getBuildConfiguration().parallelJS)
+  assertThrowsInstanceOf(f, InternalError);