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/TestLambdaToMethodStats.java
+++ b/test/langtools/tools/javac/lambda/TestLambdaToMethodStats.java
@ -0,0 +1,162 @@
+/*
+ * Copyright (c) 2013, 2018, 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 8013576 8129962
+ * @summary Add stat support to LambdaToMethod
+ * @library /tools/javac/lib
+ * @modules jdk.compiler/com.sun.tools.javac.api
+ *          jdk.compiler/com.sun.tools.javac.file
+ *          jdk.compiler/com.sun.tools.javac.util
+ * @build combo.ComboTestHelper
+ * @run main TestLambdaToMethodStats
+ */
+
+import java.io.IOException;
+
+import javax.tools.Diagnostic;
+import javax.tools.JavaFileObject;
+
+import com.sun.tools.javac.api.ClientCodeWrapper;
+
+import com.sun.tools.javac.util.List;
+import combo.ComboInstance;
+import combo.ComboParameter;
+import combo.ComboTask.Result;
+import combo.ComboTestHelper;
+
+public class TestLambdaToMethodStats extends ComboInstance<TestLambdaToMethodStats> {
+
+    enum ExprKind implements ComboParameter {
+        LAMBDA("()->null"),
+        MREF1("this::g"),
+        MREF2("this::h");
+
+        String exprStr;
+
+        ExprKind(String exprStr) {
+            this.exprStr = exprStr;
+        }
+
+        @Override
+        public String expand(String optParameter) {
+            return exprStr;
+        }
+    }
+
+    enum TargetKind implements ComboParameter {
+        IMPLICIT(""),
+        SERIALIZABLE("(A & java.io.Serializable)");
+
+        String targetStr;
+
+        TargetKind(String targetStr) {
+            this.targetStr = targetStr;
+        }
+
+        @Override
+        public String expand(String optParameter) {
+            return targetStr;
+        }
+    }
+
+    enum DiagnosticKind {
+        LAMBDA_STAT("compiler.note.lambda.stat", true, false),
+        MREF_STAT("compiler.note.mref.stat", false, false),
+        MREF_STAT1("compiler.note.mref.stat.1", false, true);
+
+        String code;
+        boolean lambda;
+        boolean bridge;
+
+        DiagnosticKind(String code, boolean lambda, boolean bridge) {
+            this.code = code;
+            this.lambda = lambda;
+            this.bridge = bridge;
+        }
+    }
+
+    public static void main(String... args) throws Exception {
+        new ComboTestHelper<TestLambdaToMethodStats>()
+                .withDimension("EXPR", (x, expr) -> x.ek = expr, ExprKind.values())
+                .withDimension("CAST", (x, target) -> x.tk = target, TargetKind.values())
+                .run(TestLambdaToMethodStats::new);
+    }
+
+    ExprKind ek;
+    TargetKind tk;
+
+    String template = "interface A {\n" +
+            "   Object o();\n" +
+            "}\n" +
+            "class Test {\n" +
+            "   A a = #{CAST}#{EXPR};\n" +
+            "   Object g() { return null; }\n" +
+            "   Object h(Object... o) { return null; }\n" +
+            "}";
+
+    @Override
+    public void doWork() throws IOException {
+        newCompilationTask()
+                .withOption("--debug=dumpLambdaToMethodStats")
+                .withSourceFromTemplate(template)
+                .generate(this::check);
+    }
+
+    void check(Result<?> res) {
+        DiagnosticKind diag = null;
+        boolean altMetafactory = false;
+        for (DiagnosticKind dk : DiagnosticKind.values()) {
+            List<Diagnostic<? extends JavaFileObject>> jcDiag = res.diagnosticsForKey(dk.code);
+            if (jcDiag.nonEmpty()) {
+                diag = dk;
+                ClientCodeWrapper.DiagnosticSourceUnwrapper dsu =
+                        (ClientCodeWrapper.DiagnosticSourceUnwrapper)jcDiag.head;
+                altMetafactory = (Boolean)dsu.d.getArgs()[0];
+                break;
+            }
+        }
+
+        if (diag == null) {
+            fail("No diagnostic found; " + res.compilationInfo());
+        }
+
+        boolean error = diag.lambda !=
+                (ek == ExprKind.LAMBDA);
+
+        error |= diag.bridge !=
+                (ek == ExprKind.MREF2);
+
+        error |= altMetafactory !=
+                (tk == TargetKind.SERIALIZABLE);
+
+        if (error) {
+            fail("Bad stat diagnostic found for source\n" +
+                    "lambda = " + diag.lambda + "\n" +
+                    "bridge = " + diag.bridge + "\n" +
+                    "altMF = " + altMetafactory + "\n" +
+                    res.compilationInfo());
+        }
+    }
+}