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/var_implicit_lambda/VarInImplicitLambdaNegTest01.java

@@ -0,0 +1,22 @@
+/*
+ * @test /nodynamiccopyright/
+ * @bug 8198512 8199327
+ * @summary compiler support for local-variable syntax for lambda parameters
+ * @compile/fail/ref=VarInImplicitLambdaNegTest01.out -XDrawDiagnostics VarInImplicitLambdaNegTest01.java
+ * @compile/fail/ref=VarInImplicitLambdaNegTest01_source10.out -source 10 -XDrawDiagnostics VarInImplicitLambdaNegTest01.java
+ */
+
+import java.util.function.*;
+
+class VarInImplicitLambdaNegTest01 {
+    IntBinaryOperator f1 = (x, var y) -> x + y;                              // error implicit and var
+    IntBinaryOperator f2 = (var x, y) -> x + y;                              // error var and implicit
+    IntBinaryOperator f3 = (int x, var y) -> x + y;                          // error var and explicit
+    IntBinaryOperator f4 = (int x, y) -> x + y;                              // error explicit and implicit
+
+    BiFunction<String[], String, String> f5 = (var s1[], var s2) -> s2;      // error var and array
+
+    // correct use
+    IntBinaryOperator f6 = (var x, var y) -> x + y;                          // ok
+    BiFunction<Function<String, String>, String, String> f = (Function<String, String> s1, String s2) -> s2; // ok
+}