undefect. CWE-407 — 63 sites patched across 27 ecosystems

Authors: russell@unturf.com · brackishbert@gmail.com · foxhop.net · TimeHexOn.com

Patches, unit tests, benchmarks, whitepaper, and outreach briefs.
Public domain — no copyright claimed. Use freely.

test/jdk/java/lang/ClassLoader/IsParallelCapable.java

@@ -0,0 +1,114 @@
+/*
+ * Copyright (c) 2016, 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 8165793 8169435
+ * @summary Test ClassLoader.isRegisteredAsParallelCapable() method
+ * @run main IsParallelCapable
+ */
+
+import java.util.stream.Stream;
+
+public class IsParallelCapable {
+    public abstract static class TestCL extends ClassLoader {
+        static {
+            ClassLoader.registerAsParallelCapable();
+        }
+        public abstract boolean expectCapable();
+        public Class findClass(String name) throws ClassNotFoundException {
+            throw new ClassNotFoundException("Why are you using this?");
+        }
+    }
+
+    public static class ParaCL extends TestCL {
+        static {
+            ClassLoader.registerAsParallelCapable();
+        }
+        @Override
+        public boolean expectCapable() { return true; }
+    }
+
+    public static class NonParaCL extends TestCL {
+        @Override
+        public boolean expectCapable() {
+            // Doesn't call registerAsParallelCapable()
+            return false;
+        }
+    }
+
+    public static class NonParaSubCL1 extends ParaCL {
+        @Override
+        public boolean expectCapable() {
+            // Doesn't call registerAsParallelCapable()
+            return false;
+        }
+    }
+
+    public static class NonParaSubCL2 extends NonParaCL {
+        static {
+            ClassLoader.registerAsParallelCapable();
+        }
+        @Override
+        public boolean expectCapable() {
+            // Superclass is not parallel capable
+            return false;
+        }
+    }
+
+    public static class ParaSubCL extends ParaCL {
+        static {
+            ClassLoader.registerAsParallelCapable();
+        }
+        @Override
+        public boolean expectCapable() { return true; }
+    }
+
+    public static void main(String[] args) throws Exception {
+        if (!ClassLoader.getSystemClassLoader().isRegisteredAsParallelCapable()) {
+            throw new RuntimeException("System classloader not parallel capable!?");
+        }
+
+        Stream.of(ParaCL.class,
+                  NonParaCL.class,
+                  NonParaSubCL1.class,
+                  NonParaSubCL2.class,
+                  ParaSubCL.class)
+                .forEach(IsParallelCapable::testClassLoaderClass);
+    }
+
+    private static void testClassLoaderClass(Class<? extends TestCL> klazz) {
+        try {
+            TestCL cl = (TestCL)klazz.newInstance();
+            if (cl.expectCapable() != cl.isRegisteredAsParallelCapable()) {
+                throw new RuntimeException(klazz + " expectCapable: " +
+                        cl.expectCapable() + ", isRegisteredAsParallelCapable: " +
+                        cl.isRegisteredAsParallelCapable());
+            } else {
+                System.out.println(klazz + " passed");
+            }
+        } catch (InstantiationException |  IllegalAccessException e) {
+            throw new RuntimeException(e);
+        }
+    }
+}