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/ResourceInterface.java

@@ -0,0 +1,38 @@
+/*
+ * @test /nodynamiccopyright/
+ * @bug 6970833
+ * @author Maurizio Cimadamore
+ * @summary Try-with-resource implementation throws an NPE during Flow analysis
+ * @compile/fail/ref=ResourceInterface.out -XDrawDiagnostics ResourceInterface.java
+ */
+
+class ResourceInterface {
+    public void test1() {
+        try(Resource1 r1 = null) { }
+    }
+
+    public void test2() {
+        try(Resource2 r2 = null) { }
+    }
+
+    static class E1 extends Exception {}
+
+    static class E2 extends Exception {}
+
+
+    interface C1 extends AutoCloseable {
+       void close() throws E1;
+    }
+
+    interface C2 extends AutoCloseable {
+       void close() throws E2;
+    }
+
+    interface C3 extends AutoCloseable {
+       void close() throws E2, E1;
+    }
+
+    static interface Resource1 extends C1, C2 {}
+
+    static interface Resource2 extends C1, C3 {}
+}