# HG changeset patch
# User jlahoda
# Date 1415962708 -3600
# Node ID eb2cbcdc86bb5d71dd9e87ea15241f8a68476cbd
# Parent  82f4cb44b2d7af2352f48568a64b7b6a5ae960cd
8062747: Compiler error when anonymous class uses method with parametrized exception
Summary: When inferring lambda's thrown types, avoid tracking variables that are not under the lambda to avoid crashes.
Reviewed-by: vromero

diff -r 82f4cb44b2d7 -r eb2cbcdc86bb langtools/src/jdk.compiler/share/classes/com/sun/tools/javac/comp/Flow.java
--- a/langtools/src/jdk.compiler/share/classes/com/sun/tools/javac/comp/Flow.java	Wed Jul 05 20:07:55 2017 +0200
+++ b/langtools/src/jdk.compiler/share/classes/com/sun/tools/javac/comp/Flow.java	Fri Nov 14 11:58:28 2014 +0100
@@ -242,9 +242,15 @@
         Log.DiagnosticHandler diagHandler = new Log.DiscardDiagnosticHandler(log);
         try {
             new AssignAnalyzer() {
+                WriteableScope enclosedSymbols = WriteableScope.create(env.enclClass.sym);
+                @Override
+                public void visitVarDef(JCVariableDecl tree) {
+                    enclosedSymbols.enter(tree.sym);
+                    super.visitVarDef(tree);
+                }
                 @Override
                 protected boolean trackable(VarSymbol sym) {
-                    return !env.info.scope.includes(sym) &&
+                    return enclosedSymbols.includes(sym) &&
                            sym.owner.kind == MTH;
                 }
             }.analyzeTree(env, that);
diff -r 82f4cb44b2d7 -r eb2cbcdc86bb langtools/test/tools/javac/flow/T8062747.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/langtools/test/tools/javac/flow/T8062747.java	Fri Nov 14 11:58:28 2014 +0100
@@ -0,0 +1,24 @@
+/**
+ * @test
+ * @bug 8062747
+ * @summary Avoiding an error for lambdas with thrown types inference inside an anonymous class.
+ * @compile T8062747.java
+ */
+public class T8062747 {
+
+    public interface Throwing<Y extends Exception> {
+        void canThrow() throws Y;
+    }
+
+    public static <Y extends Exception> void wrap(Throwing<Y> action) {
+    }
+
+    public static void invoke(String a) {
+        Runnable r = new Runnable() {
+            @Override
+            public void run() {
+                wrap(() -> System.out.println(a));
+            }
+        };
+    }
+}