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/patterns/VarErrors.java

@@ -0,0 +1,21 @@
+/*
+ * @test /nodynamiccopyright/
+ * @summary Verify errors related to var patterns
+ * @compile/fail/ref=VarErrors.out -XDrawDiagnostics -XDshould-stop.at=FLOW -XDdev VarErrors.java
+ */
+
+public class VarErrors {
+    void testIf(CharSequence cs) {
+        if (cs instanceof var v) {}
+    }
+    void testSwitchStatement(CharSequence cs) {
+        switch (cs) {
+            case var v -> {}
+        }
+    }
+    void testSwitchExpression(CharSequence cs) {
+        int i = switch (cs) {
+            case var v -> 0;
+        };
+    }
+}