Arrays clone() does not work in static method of interface for IBM JDK ---------------------------------------------------------------------- Key: ELY-476 URL: https://issues.jboss.org/browse/ELY-476 Project: WildFly Elytron Issue Type: Bug Affects Versions: 1.1.0.Beta4 Reporter: Ondrej Lukas Priority: Critical It seems IBM JDK has an issue with using clone() method for arrays in static method of interface. Using arrays clone() method causes following exception for IBM JDK: {code} java.lang.IllegalAccessError: Class org/wildfly/security/password/interfaces/SaltedSimpleDigestPassword illegally accessing "protected" member of class [B at org.wildfly.security.password.interfaces.SaltedSimpleDigestPassword.createRaw(SaltedSimpleDigestPassword.java:112) ... {code} Issue affects only direct usage of arrays clone() method from static method of interface. Example, calling methodWillFail() will fail with IBM JDK: {code} public interface SimpleInterface { static int[] methodWillFail() { int[] array = {1, 2}; return array.clone(); } } {code} Workaround is simple. Calling static method of another class using arrays clone() works for IBM JDK 8. Example, calling methodWillNotFail() will pass with IBM JDK: {code} public interface SimpleInterface { static int[] methodWillNotFail() { return SimpleClass.methodOk(); } } public class SimpleClass { static int[] methodOk() { int[] array = {1, 2}; return array.clone(); } } {code} Affected interfaces: org.wildfly.security.auth.server.NameRewriter.java org.wildfly.security.authz.RoleMapper.java org.wildfly.security.password.interfaces.SaltedSimpleDigestPassword.java org.wildfly.security.password.interfaces.OneTimePassword.java org.wildfly.security.password.interfaces.BSDUnixDESCryptPassword.java org.wildfly.security.password.interfaces.BCryptPassword.java org.wildfly.security.password.interfaces.SimpleDigestPassword.java org.wildfly.security.password.interfaces.DigestPassword.java org.wildfly.security.password.interfaces.ScramDigestPassword.java org.wildfly.security.ssl.SNIServerSSLContextSelector.java This issue causes errors in following test cases running with IBM JDK: org.wildfly.security.auth.KeyStoreBackedSecurityRealmTest org.wildfly.security.auth.realm.jdbc.PasswordSupportTest org.wildfly.security.password.impl.BCryptPasswordTest org.wildfly.security.auth.realm.ldap.UserPasswordPasswordUtilTest org.wildfly.security.ldap.PasswordSupportSuiteChild org.wildfly.security.password.impl.BSDUnixDESCryptTest