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.
2026-03-26 17:11:57 -04:00 · 2026-03-26 17:11:57 -04:00 · 0a580b313d
commit 0a580b313d
70422 changed files with 17213626 additions and 0 deletions
--- a/test/jdk/com/sun/jdi/GetUninitializedStringValue.java
+++ b/test/jdk/com/sun/jdi/GetUninitializedStringValue.java
@ -0,0 +1,90 @@
+/*
+ * Copyright (c) 2013, 2015, 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 8021897
+ * @summary Test getting the value for an uninitialized String object
+ * @author Staffan Larsen
+ *
+ * @run build TestScaffold VMConnection TargetListener TargetAdapter
+ * @run compile -g GetUninitializedStringValue.java
+ * @run driver GetUninitializedStringValue
+ */
+import com.sun.jdi.ReferenceType;
+import com.sun.jdi.StackFrame;
+import com.sun.jdi.StringReference;
+import com.sun.jdi.ThreadReference;
+import com.sun.jdi.event.BreakpointEvent;
+
+ /********** target program **********/
+
+class GetUninitializedStringValueTarg {
+    public static void main(String[] args) {
+        new String("foo");
+        System.out.println("Goodbye from GetUninitializedStringValueTarg!");
+    }
+}
+
+ /********** test program **********/
+
+public class GetUninitializedStringValue extends TestScaffold {
+    ReferenceType targetClass;
+    ThreadReference mainThread;
+
+    GetUninitializedStringValue (String args[]) {
+        super(args);
+    }
+
+    public static void main(String[] args)
+        throws Exception
+    {
+        new GetUninitializedStringValue (args).startTests();
+    }
+
+    /********** test core **********/
+
+    protected void runTests()
+        throws Exception
+    {
+        /*
+         * Run to String.<init>
+         */
+        startUp("GetUninitializedStringValueTarg");
+        BreakpointEvent bpe = resumeTo("java.lang.String", "<init>", "(Ljava/lang/String;)V");
+
+        /*
+         * We've arrived. Look at 'this' - it will be uninitialized (the value field will not be set yet).
+         */
+        StackFrame frame = bpe.thread().frame(0);
+        StringReference sr = (StringReference)frame.thisObject();
+        if (!sr.value().equals("")) {
+            throw new Exception("Unexpected value for the uninitialized String");
+        }
+
+        /*
+         * resume the target listening for events
+         */
+        listenUntilVMDisconnect();
+    }
+}