diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/parallel/throw-executed.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/parallel/throw-executed.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,17 @@
+load(libdir + "parallelarray-helpers.js");
+
+function test() {
+  var x = new Error();
+  function inc(n) {
+    if (inParallelSection()) // wait until par execution, then throw
+      throw x;
+    return n + 1;
+  }
+  var x = range(0, 2048);
+
+  assertParallelExecWillBail(
+    m => x.mapPar(inc, m));
+}
+
+if (getBuildConfiguration().parallelJS) test();
+