IV69154: GENERICSIGNATUREFORMATERROR WHEN SIGNATURE INCLUDES NESTED INNER CLASSES

APAR status

• Closed as program error.

Error description

• Error Message: java.lang.reflect.GenericSignatureFormatError
  .
  Stack Trace: java.lang.reflect.GenericSignatureFormatErrorat
  sun.reflect.generics.parser.SignatureParser.error(SignatureParse
  r.java:103)at
  sun.reflect.generics.parser.SignatureParser.parseSimpleClassType
  Signature(SignatureParser.java:265)at
  sun.reflect.generics.parser.SignatureParser.parseClassTypeSignat
  ureSuffix(SignatureParser.java:274)at
  sun.reflect.generics.parser.SignatureParser.parseClassTypeSignat
  ure(SignatureParser.java:246)at
  sun.reflect.generics.parser.SignatureParser.parseFieldTypeSignat
  ure(SignatureParser.java:229)at
  sun.reflect.generics.parser.SignatureParser.parseTypeSignature(S
  ignatureParser.java:364)at
  sun.reflect.generics.parser.SignatureParser.parseZeroOrMoreTypeS
  ignatures(SignatureParser.java:476)at
  sun.reflect.generics.parser.SignatureParser.parseFormalParameter
  s(SignatureParser.java:452)at
  sun.reflect.generics.parser.SignatureParser.parseMethodTypeSigna
  ture(SignatureParser.java:441)at
  sun.reflect.generics.parser.SignatureParser.parseMethodSig(Signa
  tureParser.java:141)at
  sun.reflect.generics.repository.ConstructorRepository.parse(Cons
  tructorRepository.java:49)at
  sun.reflect.generics.repository.ConstructorRepository.parse(Cons
  tructorRepository.java:37)at
  sun.reflect.generics.repository.AbstractRepository.<init>(Abstra
  ctRepository.java:68)at
  sun.reflect.generics.repository.MethodRepository.make(MethodRepo
  sitory.java:53)at
  java.lang.reflect.Method.getGenericInfo(Method.java:108)at
  java.lang.reflect.Method.getGenericParameterTypes(Method.java:29
  6)
  .
  

Local fix

Problem summary

• Method.getGenericParameterTypes() results in
  java.lang.reflect.GenericSignatureFormatError if any of its
  formal parameter type is a nested inner classes.
  

Problem conclusion

• IBM JVM method parameter signature parser has been updated to
  handle nested inner classes properly.
  .
  This APAR will be fixed in the following Java Releases:
     6    SR16 FP4  (6.0.16.4)
     6 R1 SR8 FP4   (6.1.8.4)
  .
  Contact your IBM Product's Service Team for these Service
  Refreshes and Fix Packs.
  For those running stand-alone, information about the 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

  JAVA CLASS LIBS

• Fixed component ID

  620700130

Applicable component levels