diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/parallel/closure-nested-branch.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/parallel/closure-nested-branch.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,54 @@
+load(libdir + "parallelarray-helpers.js");
+
+function testClosureCreationAndInvocation() {
+  var a = range(0, 64);
+  function makeaddv(v) {
+    var u = 1;
+    var t = 2;
+    var s = 3;
+    var r = 4;
+    var q = 5;
+    var p = 6;
+    var o = 7;
+    var n = 8;
+    var m = 9;
+    var l = 10;
+    var k = 11;
+    var j = 12;
+    var i = 13;
+    var h = 14;
+    var g = 15;
+    var f = 16;
+    var e = 17;
+    var d = 18;
+    var c = 19;
+    var b = 20;
+    var a = 21;
+    return ((v % 2 == 0)
+            ? function (x) { return a; }
+            : function (x) {
+              switch (x) {
+              case 0: return a; case 1: return b;
+              case 2: return c; case 3: return d;
+              case 4: return e; case 5: return f;
+              case 6: return g; case 7: return h;
+              case 8: return i; case 9: return j;
+              case 10: return k; case 11: return l;
+              case 12: return m; case 13: return n;
+              case 14: return o; case 15: return p;
+              case 16: return q; case 17: return r;
+              case 18: return s; case 19: return t;
+              case 20: return u;
+              }
+            });
+  }
+  var m;
+  for (var i in MODES) m = a.mapPar(makeaddv, MODES[i]);
+  assertEq(m[21](1), 20); // v == 21; x == 1 ==> inner function returns b == 20
+
+  var n = a.mapPar(function (v) { return function (x) { return v; }});
+  assertEq(n[21](1), 21); // v == 21
+}
+
+if (getBuildConfiguration().parallelJS)
+  testClosureCreationAndInvocation();