jdk-24/test/hotspot/jtreg/runtime/jni/checked/TestLargeUTF8Length.java

74 lines
2.7 KiB
Java

/*
* Copyright (c) 2024, 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.
*
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*/
/* @test
* @bug 8328877
* @summary Test warning for GetStringUTFLength and functionality of GetStringUTFLengthAsLong
* @requires vm.bits == 64
* @library /test/lib
* @modules java.management
* @run main/native TestLargeUTF8Length launch
*/
import java.util.Arrays;
import jdk.test.lib.Utils;
import jdk.test.lib.process.ProcessTools;
import jdk.test.lib.process.OutputAnalyzer;
public class TestLargeUTF8Length {
static {
System.loadLibrary("TestLargeUTF8Length");
}
static native void checkUTF8Length(String s, long utf8Length);
static void test() {
int length = Integer.MAX_VALUE/2 + 1;
char character = (char)0XD1; // N with tilde
long utf8Length = 2L * length;
char[] chrs = new char[length];
Arrays.fill(chrs, character);
String s = new String(chrs);
checkUTF8Length(s, utf8Length);
}
public static void main(String[] args) throws Throwable {
if (args == null || args.length == 0) {
test();
return;
}
OutputAnalyzer oa = ProcessTools.executeTestJava("-Xms9G",
"-Xmx9G",
"-Xcheck:jni",
"-Djava.library.path=" + Utils.TEST_NATIVE_PATH,
"TestLargeUTF8Length");
String warning = "WARNING: large String with modified UTF-8 length .*" +
"is reporting a reduced length of .* - use GetStringUTFLengthAsLong instead";
oa.shouldHaveExitValue(0);
oa.stdoutShouldMatch(warning);
oa.reportDiagnosticSummary();
}
}