PM05682: CG:Class:Def needed for Standard Op with C++ templates

APAR status

• Closed as program error.

Error description

• for templates it only works if both
  CG:Class:...Declaration and CG:Class:...Definition are defined,
  whereas for
  simple classes CG:Class:...Declaration is sufficient to get the
  declaration
  generated. As consequence, it still does not work for us, becaus
  e we want
  to use it for the declaration of forbidden operations, for which
   we have
  set
  
  Subject CG
     Metaclass Class
     Property NoImplicitAssignDeclaration MultiLine 'private: $Nam
  e?
     operator=(const $Name? right); // No implicit assignment oper
  ator'
     Property NoImplicitCopyDeclaration   MultiLine 'private: $Nam
  e(const
     $Name? right); // No implicit copy constructor'
     Property NoImplicitCtorDeclaration   MultiLine 'private: $Nam
  e(); // No
     implicit default constructor'
     end
  end
  
  If we define the definition, too, e.g.
     Property NoImplicitCtorDefinition    MultiLine 'blah'
  then the declarations are being generated correctly. However, th
  en also an
  invalid implementation is generated:
  
  //#[ ignore
      template ?class T? blah
  //#]
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:                                              *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  Incorrect code generated when using standard operations with
  C++ templates.
  

Problem conclusion

• In 7.5.2.1, a new keyword, $NameWithTemplateParams, was
  added for use in the declaration and definition properties
  for standard operations. Use of this keyword is demonstrated
  in the following property definitions, which can be used to
  generate template-compatible copy constructors.
  Subject CG
   Metaclass Class
    Property CopyCtorDeclaration MultiLine
  "$Name(const $NameWithTemplateParams ? x);"
    Property CopyCtorDefinition MultiLine
  "$NameWithTemplateParams::$Name(const
  $NameWithTemplateParams ? x) { /* some code */ }"
     end
  

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 RHAPSODY

• Fixed component ID

  5724V74RP

Applicable component levels

• R740 PSN

     UP