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 8142303
27 * @summary Tests handling of invalid array indices in C2 intrinsic if explicit range check in Java code is not inlined.
28 * @run main/othervm -XX:CompileCommand=inline,java.lang.String::* -XX:CompileCommand=inline,java.lang.StringUTF16::* -XX:CompileCommand=exclude,java.lang.String::checkBoundsOffCount TestStringConstruction
29 */
30 public class TestStringConstruction {
31
32 public static void main(String[] args) {
33 char[] chars = new char[42];
34 for (int i = 0; i < 10_000; ++i) {
35 test(chars);
36 }
37 }
38
39 private static String test(char[] chars) {
40 try {
41 // The constructor calls String::checkBoundsOffCount(-1, 42) to perform
42 // range checks on offset and count. If this method is not inlined, C2
43 // does not know about the explicit range checks and does not cut off the
44 // dead code. As a result, -1 is fed as offset into the StringUTF16.compress
45 // intrinsic which is replaced by TOP and causes a failure in the matcher.
46 return new String(chars, -1 , 42);
47 } catch (Exception e) {
48 return "";
49 }
|
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 8142303
27 * @summary Tests handling of invalid array indices in C2 intrinsic if explicit range check in Java code is not inlined.
28 *
29 * @run main/othervm
30 * -XX:CompileCommand=inline,java.lang.String::*
31 * -XX:CompileCommand=inline,java.lang.StringUTF16::*
32 * -XX:CompileCommand=exclude,java.lang.String::checkBoundsOffCount
33 * compiler.intrinsics.string.TestStringConstruction
34 */
35
36 package compiler.intrinsics.string;
37
38 public class TestStringConstruction {
39
40 public static void main(String[] args) {
41 char[] chars = new char[42];
42 for (int i = 0; i < 10_000; ++i) {
43 test(chars);
44 }
45 }
46
47 private static String test(char[] chars) {
48 try {
49 // The constructor calls String::checkBoundsOffCount(-1, 42) to perform
50 // range checks on offset and count. If this method is not inlined, C2
51 // does not know about the explicit range checks and does not cut off the
52 // dead code. As a result, -1 is fed as offset into the StringUTF16.compress
53 // intrinsic which is replaced by TOP and causes a failure in the matcher.
54 return new String(chars, -1 , 42);
55 } catch (Exception e) {
56 return "";
57 }
|