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/CrashWithFunctionDescriptorLookupErrorTest.java

@@ -0,0 +1,25 @@
+/*
+ * @test /nodynamiccopyright/
+ * @bug 8334466
+ * @summary Ambiguous method call with generics may cause FunctionDescriptorLookupError
+ * @compile/fail/ref=CrashWithFunctionDescriptorLookupErrorTest.out -XDrawDiagnostics CrashWithFunctionDescriptorLookupErrorTest.java
+ */
+
+import java.util.List;
+
+class CrashWithFunctionDescriptorLookupErrorTest {
+    void m() {
+        List<X> list = List.of(new X());
+        test(list.get(0));
+    }
+
+    void test(A<?> a) { }
+    void test(B<?> b) { }
+
+    interface A<T extends A<T>> { T a(); }
+    interface B<T extends B<T>> { T b(); }
+    class X implements A<X>, B<X> {
+        public X a() { return null; }
+        public X b() { return null; }
+    }
+}