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 8186092 8199852 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 // Break expected error messages into 2 parts since the loader name includes its identity 39 // hash which is unique and can't be compared against. 40 static String expectedErrorMessage1_part1 = 41 "loader constraint violation for class test.Task: " + 42 "when selecting overriding method test.Task.m()Ltest/Foo; " + 43 "the class loader PreemptingClassLoader @"; 44 static String expectedErrorMessage1_part2 = 45 " (instance of PreemptingClassLoader, " + 46 "child of 'app' jdk.internal.loader.ClassLoaders$AppClassLoader) " + 47 "of the selected method's type test.Task, " + 48 "and the class loader 'app' (instance of jdk.internal.loader.ClassLoaders$AppClassLoader) " + 49 "for its super type test.J " + 50 "have different Class objects for the type test.Foo used in the signature"; 51 52 static String expectedErrorMessage2_part1 = 53 "loader constraint violation for class test.Task: " + 54 "when selecting overriding method test.Task.m()Ltest/Foo; " + 55 "the class loader 'VtableLdrCnstrnt_Test_Loader' @"; 56 static String expectedErrorMessage2_part2 = 57 " (instance of PreemptingClassLoader, " + 58 "child of 'app' jdk.internal.loader.ClassLoaders$AppClassLoader) " + 59 "of the selected method's type test.Task, " + 60 "and the class loader 'app' (instance of jdk.internal.loader.ClassLoaders$AppClassLoader) " + 61 "for its super type test.J " + 62 "have different Class objects for the type test.Foo used in the signature"; 63 64 // Test that the error message is correct when a loader constraint error is 65 // detected during vtable creation. 66 // 67 // In this test, during vtable creation for class Task, method "Task.m()LFoo;" 68 // overrides "J.m()LFoo;". But, Task's class Foo and super type J's class Foo 69 // are different. So, a LinkageError exception should be thrown because the 70 // loader constraint check will fail. 71 public static void test(String loaderName, 72 String expectedErrorMessage_part1, 73 String expectedErrorMessage_part2) throws Exception { 74 Class<?> c = test.Foo.class; // Forces standard class loader to load Foo. 75 String[] classNames = {"test.Task", "test.Foo", "test.I"}; 76 ClassLoader l = new PreemptingClassLoader(loaderName, classNames); 77 l.loadClass("test.Foo"); 78 try { 79 l.loadClass("test.Task").newInstance(); 80 throw new RuntimeException("Expected LinkageError exception not thrown"); 81 } catch (LinkageError e) { 82 String errorMsg = e.getMessage(); 83 if (!errorMsg.contains(expectedErrorMessage_part1) || 84 !errorMsg.contains(expectedErrorMessage_part2)) { 85 System.out.println("Expected: " + expectedErrorMessage_part1 + "<id>" + expectedErrorMessage_part2 + "\n" + 86 "but got: " + errorMsg); 87 throw new RuntimeException("Wrong LinkageError exception thrown: " + errorMsg); 88 } 89 System.out.println("Passed with message: " + errorMsg); 90 } 91 } 92 93 public static void main(String args[]) throws Exception { 94 test(null, expectedErrorMessage1_part1, expectedErrorMessage1_part2); 95 test("VtableLdrCnstrnt_Test_Loader", expectedErrorMessage2_part1, expectedErrorMessage2_part2); 96 } 97 } 98 | 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 8186092 8199852 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 // Break expected error messages into 3 parts since the loader name includes its identity 39 // hash which is unique and can't be compared against. 40 static String expectedErrorMessage1_part1 = "loader constraint violation for class test.Task: when " + 41 "selecting overriding method test.Task.m()Ltest/Foo; the " + 42 "class loader PreemptingClassLoader @"; 43 static String expectedErrorMessage1_part2 = " of the selected method's type test.Task, and the class " + 44 "loader 'app' for its super type test.J have different Class objects " + 45 "for the type test.Foo used in the signature (test.Task is in unnamed " + 46 "module of loader PreemptingClassLoader @"; 47 static String expectedErrorMessage1_part3 = ", parent loader 'app'; test.J is in unnamed module of loader 'app')"; 48 49 static String expectedErrorMessage2_part1 = "loader constraint violation for class test.Task: when " + 50 "selecting overriding method test.Task.m()Ltest/Foo; the " + 51 "class loader 'VtableLdrCnstrnt_Test_Loader' @"; 52 static String expectedErrorMessage2_part2 = " of the selected method's type test.Task, and the class " + 53 "loader 'app' for its super type test.J have different Class objects " + 54 "for the type test.Foo used in the signature (test.Task is in unnamed " + 55 "module of loader 'VtableLdrCnstrnt_Test_Loader' @"; 56 static String expectedErrorMessage2_part3 = ", parent loader 'app'; test.J is in unnamed module of loader 'app')"; 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, 66 String expectedErrorMessage_part1, 67 String expectedErrorMessage_part2, 68 String expectedErrorMessage_part3) throws Exception { 69 Class<?> c = test.Foo.class; // Forces standard class loader to load Foo. 70 String[] classNames = {"test.Task", "test.Foo", "test.I"}; 71 ClassLoader l = new PreemptingClassLoader(loaderName, classNames); 72 l.loadClass("test.Foo"); 73 try { 74 l.loadClass("test.Task").newInstance(); 75 throw new RuntimeException("Expected LinkageError exception not thrown"); 76 } catch (LinkageError e) { 77 String errorMsg = e.getMessage(); 78 if (!errorMsg.contains(expectedErrorMessage_part1) || 79 !errorMsg.contains(expectedErrorMessage_part2) || 80 !errorMsg.contains(expectedErrorMessage_part3)) { 81 System.out.println("Expected: " + expectedErrorMessage_part1 + "<id>" + expectedErrorMessage_part2 + "\n" + 82 "but got: " + errorMsg); 83 throw new RuntimeException("Wrong LinkageError exception thrown: " + errorMsg); 84 } 85 System.out.println("Passed with message: " + errorMsg); 86 } 87 } 88 89 public static void main(String args[]) throws Exception { 90 test(null, expectedErrorMessage1_part1, 91 expectedErrorMessage1_part2, expectedErrorMessage1_part3); 92 test("VtableLdrCnstrnt_Test_Loader", expectedErrorMessage2_part1, 93 expectedErrorMessage2_part2, expectedErrorMessage2_part3); 94 } 95 } |