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/MethodReference23.java

@@ -0,0 +1,74 @@
+/*
+ * @test /nodynamiccopyright/
+ * @bug 8003280 8075184 8081271
+ * @summary Add lambda tests
+ *  check that pair of bound/non-bound constructor references is flagged as ambiguous
+ * @author  Maurizio Cimadamore
+ * @compile/fail/ref=MethodReference23.out -XDrawDiagnostics MethodReference23.java
+ */
+
+class MethodReference23 {
+
+    class Inner1 {
+        Inner1(MethodReference23 outer) {};
+        Inner1() {};
+    }
+
+    static class Inner2 {
+        Inner2(MethodReference23 outer) {};
+        Inner2() {};
+    }
+
+    interface SAM11 {
+        Inner1 m(MethodReference23 rec);
+    }
+
+    interface SAM12 {
+        Inner1 m();
+    }
+
+    interface SAM21 {
+        Inner2 m(MethodReference23 rec);
+    }
+
+    interface SAM22 {
+        Inner2 m();
+    }
+
+    static void call11(SAM11 s) {   }
+
+    static void call12(SAM12 s) {   }
+
+    static void call21(SAM21 s) {   }
+
+    static void call22(SAM22 s) {   }
+
+    static void call3(SAM11 s) {   }
+    static void call3(SAM12 s) {   }
+    static void call3(SAM21 s) {   }
+    static void call3(SAM22 s) {   }
+
+    static void test11() {
+        SAM11 s = MethodReference23.Inner1::new; // fail.
+        call11(MethodReference23.Inner1::new); // fail.
+    }
+
+    static void test12() {
+        SAM12 s = MethodReference23.Inner1::new; //fail
+        call12(MethodReference23.Inner1::new); //fail
+    }
+
+    static void test21() {
+        SAM21 s = MethodReference23.Inner2::new; //ok
+        call21(MethodReference23.Inner2::new); //ok
+    }
+
+    static void test22() {
+        SAM22 s = MethodReference23.Inner2::new; //ok
+        call22(MethodReference23.Inner2::new); //ok
+    }
+
+    static void test3() {
+        call3(MethodReference23.Inner2::new); //ambiguous
+    }
+}