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/UnderscoreAsIdent.java

@@ -0,0 +1,34 @@
+/*
+ * @test /nodynamiccopyright/
+ * @summary Check usages of underscore as identifier generate warnings
+ * @compile/fail/ref=UnderscoreAsIdent8.out --release 8 -XDrawDiagnostics -Xlint:-options -Werror UnderscoreAsIdent.java
+ * @compile/fail/ref=UnderscoreAsIdent9.out --release 9 -XDrawDiagnostics -Werror UnderscoreAsIdent.java
+ * @compile/fail/ref=UnderscoreAsIdent22.out -XDrawDiagnostics UnderscoreAsIdent.java
+ */
+package _._;
+
+import _._;
+
+class _ {
+    String _ = null;
+    void _(String _) { }
+    void testLocal() {
+        String _ = null;
+    }
+    void testFor() {
+        for (int _ = 0; _ < 10; _++);
+    }
+    void testTry() {
+        try { } catch (Throwable _) { }
+    }
+    void testLabel() {
+        _:
+        for (;;) {
+            break _;
+        }
+        _:
+        for (;;) {
+            continue _;
+        }
+    }
+}