--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/langtools/tools/javac/lambda/8210495/T8210495.java	Fri Sep 07 15:56:21 2018 +0100
@@ -0,0 +1,66 @@
+/*
+ * Copyright (c) 2018, 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.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * 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 8210495
+ * @summary compiler crashes because of illegal signature in otherwise legal code
+ * @compile T8210495.java
+ */
+
+import java.awt.*;
+import java.awt.event.ActionListener;
+import java.util.List;
+
+class T8210495 {
+    interface IFilter {
+        Component getComponent();
+    }
+
+    static class Filter implements IFilter {
+        @Override
+        public Component getComponent() {
+            return null;
+        }
+
+    }
+
+    public Component buildFilter(List<? extends Filter> l, Dialog dialog) {
+        Panel c = new Panel();
+        l.stream()
+                .map(f -> {
+                    Button btn = (Button)f.getComponent();
+                    btn.addActionListener((java.io.Serializable & ActionListener)evt -> {
+                        applyFilter(f);
+                        dialog.setVisible(false);
+                    });
+                    return btn;
+                })
+                .forEach(c::add);
+        return c;
+    }
+
+    private void applyFilter(IFilter f) { }
+}