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/MethodReference48.java

@@ -0,0 +1,43 @@
+/*
+ * @test /nodynamiccopyright/
+ * @bug 8003280
+ * @summary Add lambda tests
+ *  check that raw qualifier in unbound method reference is inferred from descriptor
+ * @compile/fail/ref=MethodReference48.out -XDrawDiagnostics MethodReference48.java
+ */
+
+public class MethodReference48 {
+
+    static class Foo<X> {
+        X m() { return null; };
+    }
+
+    interface SAM1 {
+        Foo<Object> m(Foo<String> fs);
+    }
+
+    interface SAM2 {
+        Integer m(Foo<Integer> fi);
+    }
+
+    interface SAM3 {
+        Object m(Foo<Integer> fi);
+    }
+
+    static void g1(SAM1 s) { } //return type not compatible
+
+    static void g2(SAM2 s) { } //ok
+
+    static void g3(SAM3 s) { } //ok
+
+    static void g4(SAM1 s) { } //return type not compatible
+    static void g4(SAM2 s) { } //ok
+    static void g4(SAM3 s) { } //ok
+
+    public static void meth() {
+        g1(Foo::m);
+        g2(Foo::m);
+        g3(Foo::m);
+        g4(Foo::m);
+    }
+}