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/TryWithResources/TwrForVariable4.java

@@ -0,0 +1,45 @@
+/* @test /nodynamiccopyright/
+ * @bug 7196163
+ * @summary Verify that variable used as an operand to try-with-resources is rejected if it is not
+ *          definitelly assigned before use and or not final or effectivelly final.
+ * @compile/fail/ref=TwrForVariable4.out -XDrawDiagnostics -Xlint:-options TwrForVariable4.java
+ */
+public class TwrForVariable4 implements AutoCloseable {
+    public static void meth() {
+        TwrForVariable4 uninitialized;
+
+        try (uninitialized) {
+            fail("must be initialized before use");
+        }
+        uninitialized = new TwrForVariable4();
+
+        TwrForVariable4 notEffectivellyFinal1 = new TwrForVariable4();
+
+        notEffectivellyFinal1 = new TwrForVariable4();
+
+        try (notEffectivellyFinal1) {
+            fail("not effectivelly final");
+        }
+
+        TwrForVariable4 notEffectivellyFinal2 = new TwrForVariable4();
+
+        try (notEffectivellyFinal2) {
+            notEffectivellyFinal2 = new TwrForVariable4();
+            fail("not effectivelly final");
+        }
+
+        try (notFinal) {
+            fail("not final");
+        }
+    }
+
+    static TwrForVariable4 notFinal = new TwrForVariable4();
+
+    static void fail(String reason) {
+        throw new RuntimeException(reason);
+    }
+
+    public void close() {
+    }
+
+}