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/MethodReference52.java

@@ -0,0 +1,39 @@
+/*
+ * @test /nodynamiccopyright/
+ * @bug 8003280
+ * @summary Add lambda tests
+ *  special cases of method references (getClass()/Array.clone()) not handled properly
+ * @compile/fail/ref=MethodReference52.out -XDrawDiagnostics MethodReference52.java
+ */
+import java.util.*;
+
+class MethodReference52 {
+
+    interface Clone1 {
+        int[] m();
+    }
+
+    interface Clone2 {
+        Object m();
+    }
+
+    interface WrongClone {
+        long[] m();
+    }
+
+    interface GetClass {
+        Class<? extends List> m();
+    }
+
+    interface WrongGetClass {
+        Class<List<String>> m();
+    }
+
+    void test(int[] iarr, List<String> ls) {
+        Clone1 c1 = iarr::clone; //ok
+        Clone2 c2 = iarr::clone; //ok - type more generic
+        WrongClone c3 = iarr::clone; //bad return type
+        GetClass c4 = ls::getClass; //ok
+        WrongGetClass c5 = ls::getClass; //bad return type
+    }
+}