--- a/nashorn/src/jdk/nashorn/internal/codegen/Attr.java	Wed Sep 18 16:36:25 2013 +0530
+++ b/nashorn/src/jdk/nashorn/internal/codegen/Attr.java	Thu Sep 19 13:34:01 2013 +0530
@@ -807,9 +807,11 @@
                     type = Type.OBJECT;
                 }
 
-                type = Type.widest(type, newCaseNode.getTest().getType());
-                if (type.isBoolean()) {
+                final Type newCaseType = newCaseNode.getTest().getType();
+                if (newCaseType.isBoolean()) {
                     type = Type.OBJECT; //booleans and integers aren't assignment compatible
+                } else {
+                    type = Type.widest(type, newCaseType);
                 }
             }
 

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/test/script/basic/JDK-8025048-2.js	Thu Sep 19 13:34:01 2013 +0530
@@ -0,0 +1,36 @@
+/*
+ * Copyright (c) 2010, 2013, 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-8025048: true as case label results in ClassCastException
+ *
+ * @test
+ * @run
+ */
+
+function func(x) {
+    switch(x) { 
+        case 8: break; case false:
+    }
+}
+

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/test/script/basic/JDK-8025048.js	Thu Sep 19 13:34:01 2013 +0530
@@ -0,0 +1,36 @@
+/*
+ * Copyright (c) 2010, 2013, 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-8025048: true as case label results in ClassCastException
+ *
+ * @test
+ * @run
+ */
+
+function func(x) {
+    switch(x) { 
+        case 8: break; case true:
+    }
+}
+