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/defaultMethods/Neg01.java

@@ -0,0 +1,18 @@
+/* @test /nodynamiccopyright/
+ * @bug 7192246
+ * @summary negative test for ambiguous defaults
+ * @compile/fail/ref=Neg01.out -XDrawDiagnostics Neg01.java
+ */
+
+class Neg01 {
+    interface IA { default int m() { return Neg01.m1(this); } }
+    interface IB { default int m() { return Neg01.m2(this); } }
+
+    static class A implements IA {}
+    static class B implements IB {}
+
+    static class AB implements IA, IB {}
+
+    static int m1(IA a) { return 0; }
+    static int m2(IB b) { return 0; }
+}