| /* |
| * Copyright (c) 2016, 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 8149170 |
| * @summary Test native functions return booleans as 0/1 but differently than java functions |
| * @modules java.base/jdk.internal.misc |
| * @library /test/lib |
| * @compile BoolConstructor.java |
| * @run main/native NativeSmallIntCallsTest |
| */ |
| |
| // This test shows that returns from native calls for boolean truncate to JNI_TRUE if value != 0 |
| // and JNI_FALSE if value returned is 0. |
| |
| import jdk.test.lib.Asserts; |
| |
| public class NativeSmallIntCallsTest { |
| static native boolean nativeCastToBoolCallTrue(); |
| static native boolean nativeCastToBoolCallFalse(); |
| static native boolean nativeCallBoolConstructor(int visible, boolean expected); |
| static { |
| System.loadLibrary("NativeSmallIntCalls"); |
| } |
| |
| public static void main(java.lang.String[] unused) throws Exception { |
| // Call through jni |
| // JNI makes all results != 0 true for compatibility |
| boolean nativeTrueVal = nativeCastToBoolCallTrue(); |
| Asserts.assertTrue(nativeTrueVal, "trueval is false!"); |
| |
| boolean nativeFalseVal = nativeCastToBoolCallFalse(); |
| Asserts.assertTrue(nativeFalseVal, "falseval is false in native!"); |
| |
| // Call a constructor or method that passes jboolean values into Java from native |
| nativeCallBoolConstructor(1, true); |
| nativeCallBoolConstructor(0x10, true); |
| nativeCallBoolConstructor(0x100, false); |
| nativeCallBoolConstructor(0x1000, false); |
| } |
| } |