diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/parallel/alloc-too-many-objs.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/parallel/alloc-too-many-objs.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,37 @@
+load(libdir + "parallelarray-helpers.js");
+
+function testMap() {
+
+  // Note: This is the same kernel function as `alloc-many-objs`, but
+  // with a larger bound.  This often fails par. exec. because it
+  // triggers GC at inconvenient times.  But let's just test that it
+  // doesn't crash or something!
+
+  var ints = range(0, 100000);
+
+  // The disqual occurs because each time we try to run we wind up
+  // bailing due to running out of memory or requesting a GC.
+  assertParallelExecWillBail(function (m) {
+    ints.mapPar(kernel, m);
+  });
+
+  function kernel(v) {
+    var x = [];
+
+    if (inParallelSection()) {
+      // don't bother to stress test the non-parallel paths!
+      for (var i = 0; i < 50; i++) {
+        x[i] = [];
+        for (var j = 0; j < 1024; j++) {
+          x[i][j] = j;
+        }
+      }
+    }
+
+    return x;
+  }
+}
+
+if (getBuildConfiguration().parallelJS)
+  testMap();
+