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/micro/org/openjdk/bench/java/util/NCopiesBenchmarks.java

@@ -0,0 +1,34 @@
+package micro.org.openjdk.bench.java.util;
+
+import org.openjdk.jmh.annotations.*;
+import org.openjdk.jmh.infra.Blackhole;
+
+import java.util.*;
+import java.util.concurrent.TimeUnit;
+
+/**
+ * @see <a href="https://bugs.openjdk.org/browse/JDK-8274715">JDK-8274715</a>
+ */
+@Fork(value = 3)
+@State(Scope.Thread)
+@BenchmarkMode(Mode.AverageTime)
+@OutputTimeUnit(TimeUnit.NANOSECONDS)
+@Warmup(iterations = 5, time = 1, timeUnit = TimeUnit.SECONDS)
+@Measurement(iterations = 5, time = 2, timeUnit = TimeUnit.SECONDS)
+public class NCopiesBenchmarks {
+    @Param({"10", "50", "100"})
+    int size;
+
+    private List<Object> list;
+
+    @Setup
+    public void prepare() {
+        list = Collections.nCopies(size, new Object());
+    }
+
+    @Benchmark
+    public void forEach(Blackhole bh) {
+        list.forEach(bh::consume);
+    }
+
+}