toString() on generator functions prints with function*

test/mjsunit/harmony/generators-runtime.js

Index: test/mjsunit/harmony/generators-runtime.js
diff --git a/test/mjsunit/harmony/generators-runtime.js b/test/mjsunit/harmony/generators-runtime.js
index 0182fc349bcc7e00eb0e6efd439b027caded759a..b4e8f950e1358898d31d16beddd6e36da9228a30 100644
--- a/test/mjsunit/harmony/generators-runtime.js
+++ b/test/mjsunit/harmony/generators-runtime.js
@@ -105,6 +105,8 @@ function TestGeneratorFunction() {
   assertSame(Function, Object.getPrototypeOf(GeneratorFunction));
   assertTrue(g instanceof Function);
 
+  assertEquals("function* g() { yield 1; }", g.toString());
+
   // Not all functions are generators.
   assertTrue(f instanceof Function);  // Sanity check.
   assertTrue(!(f instanceof GeneratorFunction));