IJ03256: JAVAX.SECURITY.AUTH.SUBJECT.TOSTRING() THROWS NPE

APAR status

• Closed as program error.

Error description

• Error Message: subject.toString() must not throw
  NullPointerException regardless of the state of subject
  .
  Stack Trace: Exception in thread "main"
  java.lang.NullPointerException
          at
  javax.security.auth.Subject.toString(Subject.java:1076)
          at
  javax.security.auth.Subject.toString(Subject.java:1036)
          at TestSubjectNPE.main(TestSubjectNPE.java:9)
  .
  

Local fix

Problem summary

• javax.security.auth.Subject.toString() throws NPE
  subject.toString() must not throw NullPointerException
  regardless of the state of subject
  Test that replicates problem:
  -----------------
  import java.util.Set;
  import javax.security.auth.Subject;
  public class TestSubjectNPE {
    public static void main(final String<OSB><CSB> args) {
      final Subject subject = new Subject();
      final Set<Object> set = subject.getPrivateCredentials();
      set.add(null);// is not prohibited by an API specification
  of Set or
      subject.toString();// bug: NullPointerException
    }
  }
  -----------------
  The exception throw is:
  -----------------
  Exception in thread "main" java.lang.NullPointerException
          at
  javax.security.auth.Subject.toString(Subject.java:1076)
          at
  javax.security.auth.Subject.toString(Subject.java:1036)
          at TestSubjectNPE.main(TestSubjectNPE.java:9)
  

Problem conclusion

• Integrate fix https://bugs.openjdk.java.net/browse/JDK-8015081
  The corresponding RTC Problem Report is 136554.
  Platform affected: All platforms.
  JVMs affected: 6.0, 6.26, 7.0, 7.27, 8.0.
  The fix will be available in 7.0.10.20, 7.1.4.20, 8.0.3.11
  .
  This APAR will be fixed in the following Java Releases:
     8    SR5 FP10  (8.0.5.10)
     7 R1 SR4 FP20  (7.1.4.20)
     7    SR10 FP20 (7.0.10.20)
  .
  Contact your IBM Product's Service Team for these Service
  Refreshes and Fix Packs.
  For those running stand-alone, information about the available
  Service Refreshes and Fix Packs can be found at:
             https://www.ibm.com/developerworks/java/jdk/
  

Temporary fix

Comments

APAR Information

• APAR is sysrouted FROM one or more of the following:

• APAR is sysrouted TO one or more of the following:

Fix information

• Fixed component name

  SECURITY

• Fixed component ID

  620700125

Applicable component levels