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/lambda/MostSpecific04.java

@@ -0,0 +1,28 @@
+/*
+ * @test /nodynamiccopyright/
+ * @bug 8003280
+ * @summary Add lambda tests
+ *  Structural most specific doesn't handle cases with wildcards in functional interfaces
+ * @compile/fail/ref=MostSpecific04.out -XDrawDiagnostics MostSpecific04.java
+ */
+public class MostSpecific04 {
+
+    interface DoubleMapper<T> {
+        double map(T t);
+    }
+
+    interface LongMapper<T> {
+        long map(T t);
+    }
+
+    static class MyList<E> {
+        void map(DoubleMapper<? super E> m) { }
+        void map(LongMapper<? super E> m) { }
+    }
+
+    public static void meth() {
+        MyList<String> ls = new MyList<String>();
+        ls.map(e->e.length()); //ambiguous - implicit
+        ls.map((String e)->e.length()); //ok
+    }
+}