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/BadSwitchExpressionLambda.java

@@ -0,0 +1,24 @@
+/*
+ * @test /nodynamiccopyright/
+ * @bug 8206986
+ * @summary Adding switch expressions
+ * @compile/fail/ref=BadSwitchExpressionLambda.out -XDrawDiagnostics BadSwitchExpressionLambda.java
+ */
+
+class BadSwitchExpressionLambda {
+
+    interface SAM {
+        void invoke();
+    }
+
+    public static void m() {}
+    public static void r(SAM sam) {}
+
+    void test(int i) {
+        SAM sam1 = () -> m(); //ok
+        SAM sam2 = () -> switch (i) { case 0 -> m(); default -> m(); }; //not ok
+        r(() -> m()); //ok
+        r(() -> switch (i) { case 0 -> m(); default -> m(); }); //not ok
+        return switch (i) { case 0 -> m(); default -> m(); }; //not ok
+    }
+}