IJ21428: ERRANT DESTRUCTOR CALL AFTER OVERLOADED NEW FAILS TO ALLOCATE

APAR status

• Closed as program error.

Error description

• An invalid destructor call is performed on a non-existent
  object. The issue occurs when calling an object's overloaded
  new() operator:
  
  
     ObjectData* ObjectData::allocate(ObjectArg objarg)
     {
       return new ObjectData( objarg() );    // ***
     }
  
  
  If the new() returns NULL, no copy of the object should be
  constructed, however the generated code for this line is always
  automatically adding the bookend destructor for this conditional
  object creation, causing a bad destructor call if the object
  isn't actually initially constructed.
  

Local fix

Problem summary

• PROBLEM DESCRIPTION:
  Cleanup actions (on the normal program execution, not exception
  handling path) associated with the new expression
  initialization may incorrectly run if the allocation fails.
  
  USERS AFFECTED:
  C++ new expressions where allocation returns 0 from a
  non-throwing allocator.
  

Problem conclusion

• A fix was implemented to the exception handling instrumentation
  of the compiler when handling conditional expressions
  associated with new allocation checks.
  

Temporary fix

Comments

APAR Information

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

  IJ20459

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

Fix information

• Fixed component name

  XL C/C++ FOR AI

• Fixed component ID

  5725C7200

Applicable component levels