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/self_initializer/T8024809/SelfInitializerInLambdaTesta.java

@@ -0,0 +1,42 @@
+/*
+ * @test /nodynamiccopyright/
+ * @bug 8024809
+ * @summary javac, some lambda programs are rejected by flow analysis
+ * @compile/fail/ref=SelfInitializerInLambdaTesta.out -XDrawDiagnostics SelfInitializerInLambdaTesta.java
+ */
+
+public class SelfInitializerInLambdaTesta {
+
+    final Runnable r1 = ()->System.out.println(r1);
+
+    final Object lock = new Object();
+
+    final Runnable r2 = ()->{
+        System.out.println(r2);
+        synchronized (lock){}
+    };
+
+    final Runnable r3 = ()->{
+        synchronized (lock){
+            System.out.println(r3);
+        }
+    };
+
+    final Runnable r4 = ()->{
+        System.out.println(r4);
+    };
+
+    interface SAM {
+        int m(String s);
+    }
+
+    final SAM s1 = (String s)->{
+        System.out.println(s + s1.toString());
+        return 0;
+    };
+
+    final SAM s2 = (s)->{
+        System.out.println(s + s2.toString());
+        return 0;
+    };
+}

test/langtools/tools/javac/lambda/self_initializer/T8024809/SelfInitializerInLambdaTesta.out

@@ -0,0 +1,7 @@
+SelfInitializerInLambdaTesta.java:10:48: compiler.err.illegal.self.ref
+SelfInitializerInLambdaTesta.java:15:28: compiler.err.illegal.self.ref
+SelfInitializerInLambdaTesta.java:21:32: compiler.err.illegal.self.ref
+SelfInitializerInLambdaTesta.java:26:28: compiler.err.illegal.self.ref
+SelfInitializerInLambdaTesta.java:34:32: compiler.err.illegal.self.ref
+SelfInitializerInLambdaTesta.java:39:32: compiler.err.illegal.self.ref
+6 errors

test/langtools/tools/javac/lambda/self_initializer/T8024809/SelfInitializerInLambdaTestb.java

@@ -0,0 +1,17 @@
+/*
+ * @test /nodynamiccopyright/
+ * @bug 8024809
+ * @summary javac, some lambda programs are rejected by flow analysis
+ * @compile/fail/ref=SelfInitializerInLambdaTestb.out -XDrawDiagnostics SelfInitializerInLambdaTestb.java
+ */
+
+public class SelfInitializerInLambdaTestb {
+
+    final Runnable r1;
+
+    final Runnable r2 = ()-> System.out.println(r1);
+
+    SelfInitializerInLambdaTestb() {
+        r1 = ()->System.out.println(r1);
+    }
+}

test/langtools/tools/javac/lambda/self_initializer/T8024809/SelfInitializerInLambdaTestb.out

@@ -0,0 +1,3 @@
+SelfInitializerInLambdaTestb.java:12:49: compiler.err.var.might.not.have.been.initialized: r1
+SelfInitializerInLambdaTestb.java:15:37: compiler.err.var.might.not.have.been.initialized: r1
+2 errors