8195598: Reference to overloaded method is ambiguous with 3 methods but works with 2

Pertinent to applicability bit set on argument expression even if only one method is not pertinent

Reviewed-by: vromero

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

@@ -366,7 +366,9 @@ public class ArgumentAttr extends JCTree.Visitor {
 
         @Override
         Type speculativeType(Symbol msym, MethodResolutionPhase phase) {
-            if (pertinentToApplicability) {
+            if (notPertinentToApplicability.contains(msym)) {
+                return super.speculativeType(msym, phase);
+            } else {
                 for (Map.Entry<ResultInfo, Type> _entry : speculativeTypes.entrySet()) {
                     DeferredAttrContext deferredAttrContext = _entry.getKey().checkContext.deferredAttrContext();
                     if (deferredAttrContext.phase == phase && deferredAttrContext.msym == msym) {
@@ -374,14 +376,14 @@ public class ArgumentAttr extends JCTree.Visitor {
                     }
                 }
                 return Type.noType;
-            } else {
-                return super.speculativeType(msym, phase);
             }
         }
 
         @Override
         JCTree speculativeTree(DeferredAttrContext deferredAttrContext) {
-            return pertinentToApplicability ? speculativeTree : super.speculativeTree(deferredAttrContext);
+            return notPertinentToApplicability.contains(deferredAttrContext.msym) ?
+                    super.speculativeTree(deferredAttrContext) :
+                    speculativeTree;
         }
 
         /**

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

@@ -200,7 +200,7 @@ public class DeferredAttr extends JCTree.Visitor {
         public JCExpression tree;
         Env<AttrContext> env;
         AttrMode mode;
-        boolean pertinentToApplicability = true;
+        Set<Symbol> notPertinentToApplicability = new HashSet<>();
         SpeculativeCache speculativeCache;
 
         DeferredType(JCExpression tree, Env<AttrContext> env) {
@@ -319,7 +319,7 @@ public class DeferredAttr extends JCTree.Visitor {
                     resultInfo.checkContext.deferredAttrContext();
             Assert.check(deferredAttrContext != emptyDeferredAttrContext);
             if (deferredStuckPolicy.isStuck()) {
-                pertinentToApplicability = false;
+                notPertinentToApplicability.add(deferredAttrContext.msym);
                 deferredAttrContext.addDeferredAttrNode(this, resultInfo, deferredStuckPolicy);
                 return Type.noType;
             } else {

test/langtools/tools/javac/lambda/T8195598.java

@@ -0,0 +1,49 @@
+/*
+ * 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 8195598
+ * @summary Reference to overloaded method is ambiguous with 3 methods but works with 2
+ * @compile T8195598.java
+ */
+
+import java.util.concurrent.*;
+import java.util.function.*;
+
+class T8195598 {
+    public CompletableFuture<?> test() {
+        return ok(() -> System.out.append("aaa"));
+    }
+    public <T> CompletableFuture<T> ok(Supplier<T> action) {
+        return CompletableFuture.supplyAsync(action);
+    }
+    public <T> CompletableFuture<T> ok(T body) {
+        return CompletableFuture.completedFuture(body);
+    }
+    public CompletableFuture<Void> ok(Runnable action) {
+        return CompletableFuture.runAsync(action);
+    }
+}