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/langtools/tools/javac/SuperInit/EarlyAssignmentNoPreview1.java

@@ -0,0 +1,21 @@
+/*
+ * @test /nodynamiccopyright/
+ * @bug 8334258
+ * @summary Disallow early assignment if FLEXIBLE_CONSTRUCTORS preview feature is not enabled
+ * @compile/fail/ref=EarlyAssignmentNoPreview1.out --release 24 -XDrawDiagnostics EarlyAssignmentNoPreview1.java
+ */
+public class EarlyAssignmentNoPreview1 {
+
+    Runnable r;
+
+    public EarlyAssignmentNoPreview1() {
+        this(r = () -> System.out.println("hello"));
+    }
+
+    public EarlyAssignmentNoPreview1(Runnable r) {
+    }
+
+    public static void main(String[] args) {
+        new EarlyAssignmentNoPreview1();
+    }
+}