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/MethodReference28.java

@@ -0,0 +1,56 @@
+/*
+ * @test /nodynamiccopyright/
+ * @bug 8003280
+ * @summary Add lambda tests
+ *  check that non-compatible method references are rejected
+ * @compile/fail/ref=MethodReference28.out -XDrawDiagnostics MethodReference28.java
+ */
+
+class MethodReference28 {
+
+    interface SAM1 {
+        void m(int i);
+    }
+
+    interface SAM2 {
+        void m(MethodReference28 rec, int i);
+    }
+
+    static void static_m1(Integer i) { } //ok - boxing
+    static void static_m2(Integer i1, Integer i2) { } //wrong arity
+    static void static_m3(String s) { } //type mismatch
+    static void static_m4(String... ss) { } //type mismatch - varargs
+
+    void m1(Integer i) { } //ok - boxing
+    void m2(Integer i1, Integer i2) { } //wrong arity
+    void m3(String s) { } //type mismatch
+    void m4(String... ss) { } //type mismatch - varargs
+
+    static void testStatic() {
+        SAM1 s1 = MethodReference28::static_m1;
+        SAM1 s2 = MethodReference28::static_m2;
+        SAM1 s3 = MethodReference28::static_m3;
+        SAM1 s4 = MethodReference28::static_m4;
+    }
+
+    void testBadMember() {
+        SAM1 s1 = MethodReference28::m1;
+        SAM1 s2 = MethodReference28::m2;
+        SAM1 s3 = MethodReference28::m3;
+        SAM1 s4 = MethodReference28::m4;
+    }
+
+    void testMember() {
+        SAM1 s1 = this::m1;
+        SAM1 s2 = this::m2;
+        SAM1 s3 = this::m3;
+        SAM1 s4 = this::m4;
+    }
+
+    static void testUnbound() {
+        SAM2 s1 = MethodReference28::m1;
+        SAM2 s2 = MethodReference28::m2;
+        SAM2 s3 = MethodReference28::m3;
+        SAM2 s4 = MethodReference28::m4;
+    }
+}