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/util/concurrent/CompletableFuture/SwallowedInterruptedException.java

@@ -0,0 +1,89 @@
+/*
+ * Copyright (c) 2020, 2025, 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.
+ */
+
+import java.util.concurrent.CompletableFuture;
+import java.util.concurrent.CountDownLatch;
+import java.util.concurrent.ThreadLocalRandom;
+import static java.util.concurrent.TimeUnit.DAYS;
+import java.util.concurrent.atomic.AtomicReference;
+
+/*
+ * @test
+ * @bug 8254350
+ * @run main SwallowedInterruptedException
+ * @key randomness
+ */
+
+// TODO: incorporate into CompletableFuture tck tests
+
+public class SwallowedInterruptedException {
+    static final int ITERATIONS = 100;
+
+    public static void main(String[] args) throws Throwable {
+        ThreadLocalRandom rnd = ThreadLocalRandom.current();
+        for (int i = 1; i <= ITERATIONS; i++) {
+            boolean timed = rnd.nextBoolean();
+            long sleepMillis = rnd.nextLong(10);
+
+            CompletableFuture<Void> future = new CompletableFuture<>();
+            CountDownLatch threadRunning = new CountDownLatch(1);
+            AtomicReference<Throwable> fail = new AtomicReference<>();
+
+            Thread thread = new Thread(() -> {
+                threadRunning.countDown();
+
+                try {
+                    Void result = (timed) ? future.get(1, DAYS) : future.get();
+
+                    if (!Thread.currentThread().isInterrupted()) {
+                        fail.set(new AssertionError(
+                            "Future.get completed with interrupted status not set"));
+                    }
+                } catch (InterruptedException ex) {
+                    if (Thread.currentThread().isInterrupted()) {
+                        fail.set(new AssertionError(
+                            "InterruptedException with interrupted status set"));
+                    }
+                } catch (Throwable ex) {
+                    fail.set(ex);
+                }
+            });
+            thread.start();
+            threadRunning.await();
+
+            // interrupt thread, then set result after an optional (random) delay
+            thread.interrupt();
+            if (sleepMillis > 0)
+                Thread.sleep(sleepMillis);
+            future.complete(null);
+
+            thread.join();
+            if (fail.get() != null) {
+                throw new AssertionError(
+                    String.format("Test failed at iteration %d with [timed=%s sleepMillis=%d]",
+                                  i, timed, sleepMillis),
+                    fail.get());
+            }
+        }
+    }
+}