8005183: Missing accessor for constructor reference pointing to private inner class ctor

Summary: Compiler should add bridges when translating private constructor reference
Reviewed-by: jjg

src/share/classes/com/sun/tools/javac/comp/LambdaToMethod.java

@@ -1702,12 +1702,17 @@ public class LambdaToMethod extends TreeTranslator {
                 return tree.sym.owner == syms.arrayClass;
             }
 
+            boolean isPrivateConstructor() {
+                return tree.sym.name == names.init &&
+                        (tree.sym.flags() & PRIVATE) != 0;
+            }
+
             /**
              * Does this reference needs a bridge (i.e. var args need to be
              * expanded or "super" is used)
              */
             final boolean needsBridge() {
-                return isSuper || needsVarArgsConversion() || isArrayOp();
+                return isSuper || needsVarArgsConversion() || isArrayOp() || isPrivateConstructor();
             }
 
             Type generatedRefSig() {

test/tools/javac/lambda/MethodReference63.java

+/*
+ * Copyright (c) 2013, 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
+ * @bug 8005183
+ * @summary Missing accessor for constructor reference pointing to private inner class ctor
+ */
+public class MethodReference63 {
+
+    interface SAM {
+        void m();
+    }
+
+    static class Foo {
+        private Foo() { }
+    }
+
+    public static void main(String[] args) {
+        SAM s = Foo::new;
+        s.m();
+    }
+}