--- a/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/codegen/TypeEvaluator.java	Wed Oct 15 19:50:03 2014 +0530
+++ b/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/codegen/TypeEvaluator.java	Thu Oct 16 11:34:31 2014 +0200
@@ -232,7 +232,14 @@
                 if (callExpr.getArgs().isEmpty()) {
                     final RecompilableScriptFunctionData data = compiler.getScriptFunctionData(fn.getId());
                     if (data != null) {
-                        return Type.typeFor(data.getReturnType(EMPTY_INVOCATION_TYPE, runtimeScope));
+                        final Type returnType = Type.typeFor(data.getReturnType(EMPTY_INVOCATION_TYPE, runtimeScope));
+                        if (returnType == Type.BOOLEAN) {
+                            // We don't have optimistic booleans. In fact, optimistic call sites getting back boolean
+                            // currently deoptimize all the way to Object.
+                            return Type.OBJECT;
+                        }
+                        assert returnType == Type.INT || returnType == Type.LONG || returnType == Type.NUMBER || returnType == Type.OBJECT;
+                        return returnType;
                     }
                 }
             }

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/test/script/basic/JDK-8061113.js	Thu Oct 16 11:34:31 2014 +0200
@@ -0,0 +1,35 @@
+/*
+ * Copyright (c) 2014 Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ * 
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ * 
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ * 
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ * 
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/**
+ * JDK-8061113: Boolean used as optimistic call return type
+ *
+ * @test
+ * @run
+ */
+
+function testcase() {
+    var a = {x:0};
+    return (function () {return a.x === 0})();
+}
+print(testcase());

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/test/script/basic/JDK-8061113.js.EXPECTED	Thu Oct 16 11:34:31 2014 +0200
@@ -0,0 +1,1 @@
+true