PQ63082: INCONSISTENCY WITH INTERN METHOD OF STRING CLASS

APAR status

• Closed as program error.

Error description

• Inconsistency with intern method of the String class.
  if ( (strObj.intern() != "a string literal") && strObj.equals(
  "a string literal") ) {
  //This should never be true
  }
  But the cust. appln sometimes for the above check is returning
  true.
  

Local fix

• use equals method in the place of intern
  

Problem summary

• In internString we scan intern string table
  looking for a
  match. If found we return address of intern'd string.
  If no match is found attempt to add a 'bucket' for a new
  intern'd string.  We again scan the intern string table
  looking for a match as another thread may have added an
  entry for an identical string in the window between us
  scanning the table for a match and getting the heap lock.
  If this happens we return the given string and not the
  string from the intern string table.
  But the code to assign the result if string found in the
  rescan of the table was missing
  

Problem conclusion

• FIXED in ca130-20020716 build
  

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(1.3) COMMO

• Fixed component ID

  5648C9800

Applicable component levels

• R130 PSN

     UP