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8209022: Missing checkcast when casting to type parameter bounded by intersection type

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Reviewed-by: mcimadamore
This commit is contained in:
Vicente Romero 2018-09-20 12:49:58 -07:00
parent 1194d162cb
commit 29fec64583
2 changed files with 54 additions and 1 deletions
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2
src/jdk.compiler/share/classes/com/sun/tools/javac/comp/TransTypes.java
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@ -772,7 +772,7 @@ public class TransTypes extends TreeTranslator {
}
}
}
result = tree;
result = retype(tree, tree.type, pt);
}
public void visitTypeTest(JCInstanceOf tree) {

53
test/langtools/tools/javac/typeVariableCast/TypeVariableCastTest.java Normal file
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@ -0,0 +1,53 @@
/*
* 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.
*
* 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 8209022
* @run testng TypeVariableCastTest
* @summary Missing checkcast when casting to type parameter bounded by intersection type
*/
import java.util.*;
import org.testng.annotations.Test;
@Test
public class TypeVariableCastTest {
static <T extends List<?> & Runnable> void f() {
Runnable r = (T) new ArrayList<>();
}
static <T extends Runnable & List<?>> void g() {
Runnable r = (T) new ArrayList<>();
}
@Test(expectedExceptions = ClassCastException.class)
static void testMethodF() {
f();
}
@Test(expectedExceptions = ClassCastException.class)
static void testMethodG() {
g();
}
}