PM51978: streaming invalid file contents into a DXL integer causes a crash

Rational DOORS Fix Pack 7 (9.3.0.7) for 9.3

APAR status

• Closed as program error.

Error description

• If you are reading from a stream and puting the contents into an
  integer, if you read beyond the end of the file, DOORS will
  crash.
  
  This was introduced at some point between 8.3.0.2 and 9.1.0.0.
  
  To recreate:
  
   - run the following code, where empty.txt is an empty file:
  
  '
  Stream s = read 'C:\\empty.txt'
  int line
  
  s ?? line
  '
  
  Workaround:
  Before reading each line, make sure the condition 'if (!end of
  s)' is satisfied.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:                                              *
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  * PROBLEM DESCRIPTION:                                         *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  If you are reading from a stream and puting the contents
  into an integer, if you read beyond the end of the file,
  DOORS will crash.
  

Problem conclusion

• The code has been changed so that the crash no longer
  occurs.
  

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

  TLOGIC DOORS

• Fixed component ID

  5724V61DR

Applicable component levels

• R930 PSN

     UP