8063052: Inference chokes on wildcard derived from method reference

Reviewed-by: mcimadamore

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

@@ -3220,7 +3220,7 @@ public class Resolve {
             super(referenceTree, name, site, argtypes.tail, typeargtypes, maxPhase);
             if (site.isRaw() && !argtypes.head.hasTag(NONE)) {
                 Type asSuperSite = types.asSuper(argtypes.head, site.tsym);
-                this.site = asSuperSite;
+                this.site = types.capture(asSuperSite);
             }
         }
 

test/tools/javac/lambda/methodReference/MethodRef8.java

+/*
+ * Copyright (c) 2014, 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 8063052
+ * @summary Inference chokes on wildcard derived from method reference
+ * @compile MethodRef8.java
+ */
+
+public class MethodRef8 {
+    void test(Box<? extends Box<? extends Number>> b) {
+        Number n1 = b.map(Box::get).get();
+        Number n2 = b.<Number>map(Box::get).get();
+    }
+
+    interface Func<S,T> { T apply(S arg); }
+
+    interface Box<T> {
+        T get();
+        <R> Box<R> map(Func<T,R> f);
+    }
+}