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/LambdaEffectivelyFinalTest.java

@@ -0,0 +1,60 @@
+/*
+ * @test /nodynamiccopyright/
+ * @bug 8003280
+ * @summary Add lambda tests
+ *  Integrate efectively final check with DA/DU analysis
+ * @compile/fail/ref=LambdaEffectivelyFinalTest.out -XDrawDiagnostics LambdaEffectivelyFinalTest.java
+ */
+class LambdaEffectivelyFinalTest {
+
+    interface SAM {
+        int m();
+    }
+
+    void foo(LambdaEffectivelyFinalTest.SAM s) { }
+
+    void m1(int x) {
+        int y = 1;
+        foo(() -> x+y); // Legal: x and y are both effectively final.
+    }
+
+    void m2(int x) {
+        int y;
+        y = 1;
+        foo(() -> x+y); // Legal: x and y are both effectively final.
+    }
+
+    void m3(int x, boolean cond) {
+        int y;
+        if (cond) y = 1;
+        foo(() -> x+y); // Illegal: y is effectively final, but not definitely assigned.
+    }
+
+    void m4(int x, boolean cond) {
+        int y;
+        if (cond) y = 1;
+        else y = 2;
+        foo(() -> x+y); // Legal: x and y are both effectively final.
+    }
+
+    void m5(int x, boolean cond) {
+        int y;
+        if (cond) y = 1;
+        y = 2;
+        foo(() -> x+y); // Illegal: y is not effectively final.t EF
+    }
+
+    void m6(int x) {
+        foo(() -> x+1);
+        x++; // Illegal: x is not effectively final.
+    }
+
+    void m7(int x) {
+        foo(() -> x=1); // Illegal: x in the assignment does not denote a variable (see 6.5.6.1)
+    }
+
+    void m8() {
+        int y;
+        foo(() -> y=1); // Illegal: y in the assignment does not denote a variable (see 6.5.6.1)
+    }
+}