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/*
* Copyright (c) 2023, 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 8272613
* @summary Make sure IAE is not thrown on `int` overflow, turning negative
* size. The test should either not throw any Throwable, or an OOME
* with real Java heap space error (not "exceeds VM limit").
* @requires sun.arch.data.model == "64"
* @run junit/othervm XcodeOverflow
*/
import java.nio.ByteBuffer;
import java.nio.CharBuffer;
import java.nio.charset.CharacterCodingException;
import java.nio.charset.StandardCharsets;
import java.util.stream.Stream;
import org.junit.jupiter.params.ParameterizedTest;
import org.junit.jupiter.params.provider.MethodSource;
import org.junit.jupiter.params.provider.Arguments;
public class XcodeOverflow {
private static Stream<Arguments> sizes() {
return Stream.of(
// SOFT_MAX_ARRAY_LENGTH: copied from ArraysSupport. No overflow; no OOME.
Arguments.of(Integer.MAX_VALUE - 8),
// overflow case: OOME w/ "Java heap space" is thrown on decoding
Arguments.of(Integer.MAX_VALUE - 1000000)
);
}
@ParameterizedTest
@MethodSource("sizes")
public void testEncodeOverflow(int size) throws CharacterCodingException {
try {
StandardCharsets.UTF_8
.newEncoder()
.encode(CharBuffer.wrap(new char[size], 0, size));
System.out.println("Encoded without error");
} catch (OutOfMemoryError oome) {
if (oome.getMessage().equals("Java heap space")) {
System.out.println("OOME for \"Java heap space\" is thrown correctly during encoding");
} else {
throw new RuntimeException("Unexpected OOME", oome);
}
}
}
@ParameterizedTest
@MethodSource("sizes")
public void testDecodeOverflow(int size) throws CharacterCodingException {
try {
StandardCharsets.UTF_8
.newDecoder()
.decode(ByteBuffer.wrap(new byte[size], 0, size));
System.out.println("Decoded without error");
} catch (OutOfMemoryError oome) {
if (oome.getMessage().equals("Java heap space")) {
System.out.println("OOME for \"Java heap space\" is thrown correctly during decoding");
} else {
throw new RuntimeException("Unexpected OOME", oome);
}
}
}
}
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