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8171993: AssertionError when compiling method reference with generic code and varargs

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Reviewed-by: mcimadamore
This commit is contained in:
Srikanth Adayapalam 2017-01-17 09:17:10 +05:30
parent c96f02f2e8
commit f1eb002e95
2 changed files with 41 additions and 0 deletions
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1
langtools/src/jdk.compiler/share/classes/com/sun/tools/javac/comp/LambdaToMethod.java
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@ -792,6 +792,7 @@ public class LambdaToMethod extends TreeTranslator {
switch (tree.getTag()) {
case APPLY: ((JCMethodInvocation)tree).varargsElement = varargsElement; break;
case NEWCLASS: ((JCNewClass)tree).varargsElement = varargsElement; break;
case TYPECAST: setVarargsIfNeeded(((JCTypeCast) tree).expr, varargsElement); break;
default: throw new AssertionError();
}
}

40
langtools/test/tools/javac/lambda/MethodReferenceVarargsTest.java Normal file
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@ -0,0 +1,40 @@
/*
* Copyright (c) 2017, 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 8171993
* @summary AssertionError when compiling method reference with generic code and varargs.
* @compile MethodReferenceVarargsTest.java
*/
public class MethodReferenceVarargsTest<T> {
public T invoke(Object... args) {
return null;
}
public static <T extends String> void test() { // works with <T> alone.
MethodReferenceVarargsTest<T> bug = new MethodReferenceVarargsTest<>();
java.util.function.Function<String, T> b = bug::invoke;
java.util.function.Function<String, T> f = (args) -> bug.invoke(args);
}
}