1 files changed, 7 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/jaeger/bug771871.js b/js/src/jit-test/tests/jaeger/bug771871.js
new file mode 100644
index 0000000000..23d91aab26
--- /dev/null
+++ b/js/src/jit-test/tests/jaeger/bug771871.js
@@ -0,0 +1,7 @@
+function test() {
+  var box = { call: function () { return 42.1; } };
+  for (var i = 0; i < 50; i++) {
+    assertEq(box.call(undefined, 42.1), 42.1);
+  }
+}
+test();