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 8186092
27 * @compile ../common/Foo.java
28 * ../common/J.java
29 * I.java
30 * ../common/C.jasm
31 * Task.java
32 * ../common/PreemptingClassLoader.java
33 * @run main/othervm Test
34 */
35
36 public class Test {
37
38 static String expectedErrorMessage1 =
39 "loader constraint violation for class test.Task: when selecting overriding method test.Task.m()Ltest/Foo; " +
40 "the class loader instance of PreemptingClassLoader " +
41 "(parent: \"app\" jdk.internal.loader.ClassLoaders$AppClassLoader) of the selected method's type test.Task, " +
42 "and the class loader \"app\" (instance of jdk.internal.loader.ClassLoaders$AppClassLoader, " +
43 "parent: \"platform\" jdk.internal.loader.ClassLoaders$PlatformClassLoader) for its super type test.J " +
44 "have different Class objects for the type test.Foo used in the signature";
45
46 static String expectedErrorMessage2 =
47 "loader constraint violation for class test.Task: when selecting overriding method test.Task.m()Ltest/Foo; " +
48 "the class loader \"VtableLdrCnstrnt_Test_Loader\" (instance of PreemptingClassLoader, " +
49 "parent: \"app\" jdk.internal.loader.ClassLoaders$AppClassLoader) of the selected method's type test.Task, " +
50 "and the class loader \"app\" (instance of jdk.internal.loader.ClassLoaders$AppClassLoader, " +
51 "parent: \"platform\" jdk.internal.loader.ClassLoaders$PlatformClassLoader) for its super type test.J " +
52 "have different Class objects for the type test.Foo used in the signature";
53
54 // Test that the error message is correct when a loader constraint error is
55 // detected during vtable creation.
56 //
57 // In this test, during vtable creation for class Task, method "Task.m()LFoo;"
58 // overrides "J.m()LFoo;". But, Task's class Foo and super type J's class Foo
59 // are different. So, a LinkageError exception should be thrown because the
60 // loader constraint check will fail.
61 public static void test(String loaderName, String expectedErrorMessage) throws Exception {
62 Class<?> c = test.Foo.class; // Forces standard class loader to load Foo.
63 String[] classNames = {"test.Task", "test.Foo", "test.I"};
64 ClassLoader l = new PreemptingClassLoader(loaderName, classNames);
65 l.loadClass("test.Foo");
66 try {
67 l.loadClass("test.Task").newInstance();
68 throw new RuntimeException("Expected LinkageError exception not thrown");
69 } catch (LinkageError e) {
70 String errorMsg = e.getMessage();
71 if (!errorMsg.equals(expectedErrorMessage)) {
|
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 8186092
27 * @compile ../common/Foo.java
28 * ../common/J.java
29 * I.java
30 * ../common/C.jasm
31 * Task.java
32 * ../common/PreemptingClassLoader.java
33 * @run main/othervm Test
34 */
35
36 public class Test {
37
38 static String expectedErrorMessage1 =
39 "loader constraint violation for class test.Task: " +
40 "when selecting overriding method test.Task.m()Ltest/Foo; " +
41 "the class loader \"<unnamed>\" (instance of PreemptingClassLoader, " +
42 "child of \"app\" jdk.internal.loader.ClassLoaders$AppClassLoader) " +
43 "of the selected method's type test.Task, " +
44 "and the class loader \"app\" (instance of jdk.internal.loader.ClassLoaders$AppClassLoader) " +
45 "for its super type test.J " +
46 "have different Class objects for the type test.Foo used in the signature";
47
48 static String expectedErrorMessage2 =
49 "loader constraint violation for class test.Task: " +
50 "when selecting overriding method test.Task.m()Ltest/Foo; " +
51 "the class loader \"VtableLdrCnstrnt_Test_Loader\" (instance of PreemptingClassLoader, " +
52 "child of \"app\" jdk.internal.loader.ClassLoaders$AppClassLoader) " +
53 "of the selected method's type test.Task, " +
54 "and the class loader \"app\" (instance of jdk.internal.loader.ClassLoaders$AppClassLoader) " +
55 "for its super type test.J " +
56 "have different Class objects for the type test.Foo used in the signature";
57
58 // Test that the error message is correct when a loader constraint error is
59 // detected during vtable creation.
60 //
61 // In this test, during vtable creation for class Task, method "Task.m()LFoo;"
62 // overrides "J.m()LFoo;". But, Task's class Foo and super type J's class Foo
63 // are different. So, a LinkageError exception should be thrown because the
64 // loader constraint check will fail.
65 public static void test(String loaderName, String expectedErrorMessage) throws Exception {
66 Class<?> c = test.Foo.class; // Forces standard class loader to load Foo.
67 String[] classNames = {"test.Task", "test.Foo", "test.I"};
68 ClassLoader l = new PreemptingClassLoader(loaderName, classNames);
69 l.loadClass("test.Foo");
70 try {
71 l.loadClass("test.Task").newInstance();
72 throw new RuntimeException("Expected LinkageError exception not thrown");
73 } catch (LinkageError e) {
74 String errorMsg = e.getMessage();
75 if (!errorMsg.equals(expectedErrorMessage)) {
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