1 files changed, 26 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/basic/testUnaryImacros.js b/js/src/jit-test/tests/basic/testUnaryImacros.js
new file mode 100644
index 0000000000..884d856d26
--- /dev/null
+++ b/js/src/jit-test/tests/basic/testUnaryImacros.js
@@ -0,0 +1,26 @@
+function testUnaryImacros()
+{
+  function checkArg(x)
+  {
+    return 1;
+  }
+
+  var o = { valueOf: checkArg, toString: null };
+  var count = 0;
+  var v = 0;
+  for (var i = 0; i < 5; i++)
+    v += +o + -(-o);
+
+  var results = [v === 10 ? "valueOf passed" : "valueOf failed"];
+
+  o.valueOf = null;
+  o.toString = checkArg;
+
+  for (var i = 0; i < 5; i++)
+    v += +o + -(-o);
+
+  results.push(v === 20 ? "toString passed" : "toString failed");
+
+  return results.join(", ");
+}
+assertEq(testUnaryImacros(), "valueOf passed, toString passed");