8195598: Reference to overloaded method is ambiguous with 3 methods but works with 2
Summary: Pertinent to applicability bit set on argument expression even if only one method is not pertinent
Reviewed-by: vromero
--- a/src/jdk.compiler/share/classes/com/sun/tools/javac/comp/ArgumentAttr.java Wed Jan 17 20:07:50 2018 -0800
+++ b/src/jdk.compiler/share/classes/com/sun/tools/javac/comp/ArgumentAttr.java Thu Jan 18 11:46:33 2018 +0000
@@ -366,7 +366,9 @@
@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 @@
}
}
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;
}
/**
--- a/src/jdk.compiler/share/classes/com/sun/tools/javac/comp/DeferredAttr.java Wed Jan 17 20:07:50 2018 -0800
+++ b/src/jdk.compiler/share/classes/com/sun/tools/javac/comp/DeferredAttr.java Thu Jan 18 11:46:33 2018 +0000
@@ -200,7 +200,7 @@
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 @@
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 {
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/test/langtools/tools/javac/lambda/T8195598.java Thu Jan 18 11:46:33 2018 +0000
@@ -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);
+ }
+}