PI67358: DESTRUCTORS OF AUTOMATIC OBJECTS NOT CALLED DURING EXCEPTION STACK UNWINDING WHEN USING INLINING

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• Local automatic objects in a function where an exception is
  thrown, or where an exception is thrown in a local function
  call, do not have their destructors called during the exception
  handling stack unwinding process.
  
  The issue is triggered by compiling with inlining enabled.
  Compiling with no inlining produces code that calls the local
  automatic object destructors.
  
  
  
     === CODE EXAMPLE ===
  
  Note:  not compilable/demonstrative of the issue.
  
  
  void throwFunction() { throw 12; }
  
  void smallFunction()
  {
      try
      {
          throwFunction();
      }
      catch(...)
      {
          printf("caught\n");
          throw;
      }
  }
  
  
  int func()
  {
      MyClass auto_object;     // DESTRUCTOR NOT CALLED
  
      ...
  
      if(someCondition(true))
      {
          smallFunction();
      }
      return  2;
  }
  

Local fix

• Do not compile with inlining enabled.
  

Problem summary

• ****************************************************************
  * USERS AFFECTED: The problem may effect users of              *
  *                 exceptionhandling and inlining. Dtorcalls    *
  *                 for automatic variables may be missed        *
  *                 during stack unwinding after an exception    *
  *                 is thrown.                                   *
  ****************************************************************
  * PROBLEM DESCRIPTION: Due to an issue with inlining           *
  *                      and exception handling, the dtor call   *
  *                      for some automatic objects may be       *
  *                      missedduring stack unwinding after      *
  *                      an exception is thrown.                 *
  ****************************************************************
  * RECOMMENDATION: Apply the provided PTF.                      *
  *                                                              *
  ****************************************************************
  .
  

Problem conclusion

• Apply provided fix.
  

Temporary fix

Comments

APAR Information

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

  PI61599

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

Modules/Macros

•    CCNEPP
  

Fix information

• Fixed component name

  C/C++ FOR MVS

• Fixed component ID

  56551210A

Applicable component levels

• R791 PSY UI40666

     UP16/09/22 P F609

Fix is available

• Select the PTF appropriate for your component level. You will be required to sign in. Distribution on physical media is not available in all countries.