PM79618: MEMORY LEAK IN SWPRINTF() IN MULTI-THREADED APPLICATION

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• Multi-threaded applications using swprintf() may experience an
  out of storage condition.
  
  EXTERNAL SYMPTOMS
  A memory leak of 32k byte buffers in user heap storage will be
  evident in Memcheck VHM (CEL4MCHK) and HEAPCHK tracing.
  
  VERIFICATION STEPS
  Run the HEAPCHK diagnostic report option to verify that there is
  an unmatched allocate of 32768 bytes in swprintf().
  
  KEYWORDS
  swprintf_a
  swprintf
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All multi-threaded applications that use     *
  *                 swprintf() or vswprintf() functions.         *
  ****************************************************************
  * PROBLEM DESCRIPTION: A storage leak may be encountered in    *
  *                      a multi-threaded application.  Storage  *
  *                      associated with the use of swprintf()   *
  *                      function is not released during         *
  *                      thread termination. This storage is     *
  *                      reclaimed during application            *
  *                      termination.  Long running/heavily      *
  *                      threaded applications using swprintf()  *
  *                      or vswprintf() may encounter            *
  *                      storage constraints.                    *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  See problem description.
  

Problem conclusion

• Code has been modified to release storage associated with
  swprintf() and vswprintf() during thread termination.
  

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:

  UK91661 UK91662

Modules/Macros

• CELHTTRM CELQTTRM EDC40081
  

Fix information

• Fixed component name

  LE C LIBRARY

• Fixed component ID

  568819805

Applicable component levels

• R770 PSY UK91661

     UP13/02/27 P F302

• R780 PSY UK91662

     UP13/02/27 P F302

Fix is available

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