8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24 /*
25 * @test
26 * @bug 8015499
27 * @summary javac, Gen is generating extra checkcast instructions in some corner cases
28 * @modules jdk.compiler/com.sun.tools.classfile
29 * jdk.compiler/com.sun.tools.javac.util
30 * @run main DoubleCastTest
31 */
32
33 import java.util.List;
34 import java.util.ArrayList;
35 import com.sun.tools.classfile.*;
36 import com.sun.tools.javac.util.Assert;
37
38 public class DoubleCastTest {
39 class C {
40 Object x;
41 Object m() { return null; }
42 void m1(byte[] b) {}
43 void m2() {
44 Object o;
45 Object[] os = null;
46 m1((byte[])(o = null));
47 m1((byte[])o);
48 m1((byte[])(o == null ? o : o));
|
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24 /*
25 * @test
26 * @bug 8015499
27 * @summary javac, Gen is generating extra checkcast instructions in some corner cases
28 * @modules jdk.jdeps/com.sun.tools.classfile
29 * jdk.compiler/com.sun.tools.javac.util
30 * @run main DoubleCastTest
31 */
32
33 import java.util.List;
34 import java.util.ArrayList;
35 import com.sun.tools.classfile.*;
36 import com.sun.tools.javac.util.Assert;
37
38 public class DoubleCastTest {
39 class C {
40 Object x;
41 Object m() { return null; }
42 void m1(byte[] b) {}
43 void m2() {
44 Object o;
45 Object[] os = null;
46 m1((byte[])(o = null));
47 m1((byte[])o);
48 m1((byte[])(o == null ? o : o));
|