diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/parallel/bug977900.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/parallel/bug977900.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,5 @@
+if (!getBuildConfiguration().parallelJS)
+    quit();
+
+function chooseMax(a, b) { return a>b?a:b;};
+var a = [1,2].scatterPar([0,0], -1, chooseMax);