8006334: javap, JavapTask constructor breaks with null pointer exception if...

8006334: javap, JavapTask constructor breaks with null pointer exception if parameter options is null
Reviewed-by: jjg

src/share/classes/com/sun/tools/javap/JavapTask.java

 /*
- * Copyright (c) 2007, 2012, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2007, 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
@@ -362,7 +362,8 @@ public class JavapTask implements DisassemblerTool.DisassemblerTask, Messages {
         }
 
         try {
-            handleOptions(options, false);
+            if (options != null)
+                handleOptions(options, false);
         } catch (BadArgs e) {
             throw new IllegalArgumentException(e.getMessage());
         }

test/tools/javap/8006334/JavapTaskCtorFailWithNPE.java

+/*
+ * Copyright (c) 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.
+ */
+
+/*
+ * @test
+ * @bug 8006334
+ * @summary javap: JavapTask constructor breaks with null pointer exception if
+ * parameter options is null
+ */
+
+import java.io.File;
+import java.util.Arrays;
+import java.io.PrintWriter;
+import java.io.StringWriter;
+import java.util.List;
+import java.util.Locale;
+import javax.tools.Diagnostic;
+import javax.tools.DiagnosticCollector;
+import javax.tools.JavaFileManager;
+import javax.tools.JavaFileObject;
+import com.sun.tools.javap.JavapFileManager;
+import com.sun.tools.javap.JavapTask;
+
+public class JavapTaskCtorFailWithNPE {
+
+    //we will also check the output just to confirm that we get the expected one
+    private static final String expOutput =
+        "Compiled from \"JavapTaskCtorFailWithNPE.java\"\n" +
+        "public class JavapTaskCtorFailWithNPE {\n" +
+        "  public JavapTaskCtorFailWithNPE();\n" +
+        "  public static void main(java.lang.String[]);\n" +
+        "}\n";
+
+    public static void main(String[] args) {
+        new JavapTaskCtorFailWithNPE().run();
+    }
+
+    private void run() {
+        File classToCheck = new File(System.getProperty("test.classes"),
+            getClass().getSimpleName() + ".class");
+
+        DiagnosticCollector<JavaFileObject> dc =
+                new DiagnosticCollector<JavaFileObject>();
+        StringWriter sw = new StringWriter();
+        PrintWriter pw = new PrintWriter(sw);
+        JavaFileManager fm = JavapFileManager.create(dc, pw);
+        JavapTask t = new JavapTask(pw, fm, dc, null,
+                Arrays.asList(classToCheck.getPath()));
+        boolean ok = t.run();
+        if (!ok)
+            throw new Error("javap failed unexpectedly");
+
+        List<Diagnostic<? extends JavaFileObject>> diags = dc.getDiagnostics();
+        for (Diagnostic<? extends JavaFileObject> d: diags) {
+            if (d.getKind() == Diagnostic.Kind.ERROR)
+                throw new AssertionError(d.getMessage(Locale.ENGLISH));
+        }
+        String lineSep = System.getProperty("line.separator");
+        String out = sw.toString().replace(lineSep, "\n");
+        if (!out.equals(expOutput)) {
+            throw new AssertionError("The output is not equal to the one expected");
+        }
+    }
+
+}