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/langtools/tools/javac/lambda/T8031967.java
+++ b/test/langtools/tools/javac/lambda/T8031967.java
@ -0,0 +1,138 @@
+/*
+ * Copyright (c) 2014, 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 8031967
+ * @summary Ensure javac can handle very deeply nested chain of method invocations occurring as
+ *          a parameter to other method invocations.
+ * @modules jdk.compiler
+ * @run main/othervm -Xss1m T8031967
+ */
+
+import java.io.IOException;
+import java.net.URI;
+import java.util.Arrays;
+import java.util.List;
+
+import javax.tools.DiagnosticListener;
+import javax.tools.JavaCompiler;
+import javax.tools.JavaFileObject;
+import javax.tools.SimpleJavaFileObject;
+import javax.tools.ToolProvider;
+
+import com.sun.source.util.JavacTask;
+
+public class T8031967 {
+
+    public static void main(String... args) throws IOException {
+        new T8031967().run();
+    }
+
+    final int depth = 50;
+
+    private void run() throws IOException {
+        runTestCase(true);
+        runTestCase(false);
+    }
+
+    private void runTestCase(boolean withErrors) throws IOException {
+        StringBuilder code = new StringBuilder();
+
+        code.append("public class Test {\n" +
+                    "    private void test() {\n" +
+                    "        GroupLayout l = new GroupLayout();\n" +
+                    "        l.setHorizontalGroup(\n");
+
+        gen(code, depth);
+        code.append("        );\n" +
+                    "    }\n");
+        if (!withErrors) {
+            code.append("    class GroupLayout {\n" +
+                        "        ParallelGroup createParallelGroup() {return null;}\n" +
+                        "        ParallelGroup createParallelGroup(int i) {return null;}\n" +
+                        "        ParallelGroup createParallelGroup(int i, int j) {return null;}\n" +
+                        "        void setHorizontalGroup(Group g) { }\n" +
+                        "    }\n" +
+                        "    \n" +
+                        "    class Group {\n" +
+                        "        Group addGroup(Group g) { return this; }\n" +
+                        "        Group addGroup(int i, Group g) { return this; }\n" +
+                        "        Group addGap(int i) { return this; }\n" +
+                        "        Group addGap(long l) { return this; }\n" +
+                        "        Group addGap(int i, int j) { return this; }\n" +
+                        "        Group addComponent(Object c) { return this; }\n" +
+                        "        Group addComponent(int i, Object c) { return this; }\n" +
+                        "    }\n" +
+                        "    class ParallelGroup extends Group {\n" +
+                        "        Group addGroup(Group g) { return this; }\n" +
+                        "        Group addGroup(int i, Group g) { return this; }\n" +
+                        "        Group addGap(int i) { return this; }\n" +
+                        "        Group addGap(int i, int j) { return this; }\n" +
+                        "        Group addComponent(Object c) { return this; }\n" +
+                        "        Group addComponent(int i, Object c) { return this; }\n" +
+                        "    }\n");
+        }
+
+        code.append("}\n");
+
+        JavaSource source = new JavaSource(code.toString());
+        List<JavaSource> sourceList = Arrays.asList(source);
+        JavaCompiler compiler = ToolProvider.getSystemJavaCompiler();
+        DiagnosticListener<JavaFileObject> noErrors = (diagnostic) -> {
+            throw new IllegalStateException("Should not produce errors: " + diagnostic);
+        };
+        JavacTask task = (JavacTask) compiler.getTask(null, null, withErrors ? null : noErrors,
+                null, null, sourceList);
+
+        task.analyze();
+    }
+
+    private void gen(StringBuilder code, int depth) {
+        code.append("l.createParallelGroup()\n");
+        if (depth > 0) {
+            code.append(".addGroup(\n");
+            gen(code, depth - 1);
+            code.append(")");
+        }
+
+        code.append(".addGap(1)\n" +
+                    ".addComponent(new Object())\n" +
+                    ".addGap(1)\n" +
+                    ".addComponent(new Object())");
+    }
+
+    class JavaSource extends SimpleJavaFileObject {
+
+        final String code;
+        public JavaSource(String code) {
+            super(URI.create("myfo:/Test.java"), JavaFileObject.Kind.SOURCE);
+            this.code = code;
+        }
+
+        @Override
+        public CharSequence getCharContent(boolean ignoreEncodingErrors) {
+            return code;
+        }
+    }
+}