1 files changed, 29 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/jaeger/bug587431.js b/js/src/jit-test/tests/jaeger/bug587431.js
new file mode 100644
index 000000000..bfad85776
--- /dev/null
+++ b/js/src/jit-test/tests/jaeger/bug587431.js
@@ -0,0 +1,29 @@
+function g() {
+  var UPPER_MASK = 2147483648
+  var mt = new Array
+  function f1(n1) {
+    return n1 < 0 ? (n1 ^ UPPER_MASK) + UPPER_MASK: n1
+  }
+  function f2(n1, n2) {
+    return f1(n1 + n2 & 4294967295)
+  }
+  function f3(n1, n2) {
+    var sum
+    for (var i = 0; i < 32; ++i) {
+      sum = f2(sum, f1(n2 << i))
+    }
+    return sum
+  }
+  this.init_genrand = function(s) {
+    mt[0] = f1(s & 96295)
+    for (mti = 1; mti < 6; mti++) {
+      mt[mti] = f2(f3(3, f1(mt[mti - 1] ^ mt[1] > 0)), mti)
+    }
+  }
+} (function() {
+  var fuzzMT = new g;
+  fuzzMT.init_genrand(54)
+} ())
+
+/* Don't assert. */
+