8279290: symbol not found error, implicit lambdas and diamond constructor invocations

Reviewed-by: jlahoda

src/jdk.compiler/share/classes/com/sun/tools/javac/comp/Attr.java

@@ -2922,6 +2922,7 @@ public class Attr extends JCTree.Visitor {
                     && ((tree.constructorType != null && inferenceContext.free(tree.constructorType))
                     || (tree.clazz.type != null && inferenceContext.free(tree.clazz.type)))) {
                 final ResultInfo resultInfoForClassDefinition = this.resultInfo;
+                Env<AttrContext> dupLocalEnv = localEnv.dup(localEnv.tree, localEnv.info.dup(localEnv.info.scope.dupUnshared()));
                 inferenceContext.addFreeTypeListener(List.of(tree.constructorType, tree.clazz.type),
                         instantiatedContext -> {
                             tree.constructorType = instantiatedContext.asInstType(tree.constructorType);
@@ -2930,7 +2931,7 @@ public class Attr extends JCTree.Visitor {
                             try {
                                 this.resultInfo = resultInfoForClassDefinition;
                                 visitAnonymousClassDefinition(tree, clazz, clazz.type, cdef,
-                                                            localEnv, argtypes, typeargtypes, pkind);
+                                        dupLocalEnv, argtypes, typeargtypes, pkind);
                             } finally {
                                 this.resultInfo = prevResult;
                             }

test/langtools/tools/javac/lambda/CantFindSymbolImplicitLambdaAndDiamondTest.java

@@ -0,0 +1,54 @@
+/*
+ * Copyright (c) 2022, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * @test
+ * @summary symbol not found error, implicit lambdas and diamond constructor invocations
+ * @compile CantFindSymbolImplicitLambdaAndDiamondTest.java
+ */
+
+import java.util.function.Consumer;
+
+class CantFindSymbolImplicitLambdaAndDiamondTest {
+    static class B<T>{}
+
+    static class A1 {
+        <T> A1(Consumer<T> cons) {}
+    }
+
+    static class A2<T> {
+        A2(Consumer<T> cons) {}
+    }
+
+    public void mount() {
+        new A1(inHours ->
+                new B<>() {{
+                    System.out.println(inHours);
+                }});
+
+        new A2<>(inHours ->
+            new B<>() {{
+                System.out.println(inHours);
+            }});
+    }
+}