1 files changed, 16 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/auto-regress/bug717251.js b/js/src/jit-test/tests/auto-regress/bug717251.js
new file mode 100644
index 0000000000..b3e5696585
--- /dev/null
+++ b/js/src/jit-test/tests/auto-regress/bug717251.js
@@ -0,0 +1,16 @@
+// Binary: cache/js-dbg-64-4de07a341aab-linux
+// Flags: -m -n -a
+//
+load(libdir + "immutable-prototype.js");
+
+if (globalPrototypeChainIsMutable())
+  this.__proto__ = [];
+
+var msPerDay =   86400000;
+for ( var time = 0, year = 1969; year >= 0; year-- ) {
+  time -= TimeInYear(year);
+}
+function DaysInYear( y ) {}
+function TimeInYear( y ) {
+  return ( DaysInYear(y) * msPerDay );
+}