diff -r 3081f39a3d30 -r 4a03245ffc2f src/jdk.compiler/share/classes/com/sun/tools/javac/comp/LambdaToMethod.java
--- a/src/jdk.compiler/share/classes/com/sun/tools/javac/comp/LambdaToMethod.java	Wed Jul 10 09:43:35 2019 +0800
+++ b/src/jdk.compiler/share/classes/com/sun/tools/javac/comp/LambdaToMethod.java	Wed Jul 10 09:04:42 2019 +0200
@@ -1709,8 +1709,9 @@
                         }
                         break;
                     case VARDEF:
-                        if (((JCVariableDecl)block.tree).sym == sym &&
-                                sym.owner.kind == MTH) { //only locals are captured
+                        if ((((JCVariableDecl)block.tree).sym == sym &&
+                                sym.owner.kind == MTH) || //only locals are captured
+                            (block.locals != null && block.locals.contains(sym))) {
                             return currentDepth > depth ? null : block.tree;
                         }
                         break;