1 files changed, 19 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/basic/typeMonitorCall.js b/js/src/jit-test/tests/basic/typeMonitorCall.js
new file mode 100644
index 0000000000..d80a7dc626
--- /dev/null
+++ b/js/src/jit-test/tests/basic/typeMonitorCall.js
@@ -0,0 +1,19 @@
+
+/* Make sure we are checking argument types when going through unknown but monomorphic call sites. */
+
+function foo(x) {
+  return x + 10;
+}
+
+var array = [1,2,3,4,5,6,7,"eight"];
+
+/* Jump through hoops to make 'f' unknown. */
+var f = this[eval("'foo'")];
+
+for (var i = 0; i < array.length; i++) {
+  var res = f(array[i]);
+  if (i != 7)
+    assertEq(res, i + 11);
+  else
+    assertEq(res, "eight10");
+}