Fixes are available
APAR status
Closed as program error.
Error description
When creating an instantiation of a normal template class that uses a static member function from a different, explicit specialization template class, the compiler is incorrectly generating an error. This incorrect behaviour is demonstrated in the following test case, where the explicitly specialized template class's primary template class does not have a definition, but the explicit specialization does. This is valid, because the definition of an explicitly specialized template class is unrelated to the definition of the primary template. The primary template is not required to be defined in order to define the specialization. ===== TEST CASE ===== template <class T> class MyClass { private: static int const value; }; template <class T> struct ExpSpec; //template<class T> struct ExpSpec { }; // primary template // Uncomment the primary definition, and the test case passes template<> // explicit specialization template struct ExpSpec<unsigned int> { static int getvalue() { return 7; } }; template <class T> int const MyClass<T>::value = ExpSpec<T>::getvalue(); template class MyClass<unsigned int>; // instantiation ===== Compile ===== $ xlC -c test.cpp "test.cpp", line 19.31: 1540-0062 (S) The incomplete class "ExpSpec" must not be used as a qualifier. $
Local fix
Add a stub definition for the primary template class.
Problem summary
PROBLEM DESCRIPTION: A compiler parsing error on an initializer for an out-of-line definition of a template member variable. USERS AFFECTED: The problem will only affect initializers which have a template name in the qualifier.
Problem conclusion
The problem has been resolved, and the compiler no longer emits the error.
Temporary fix
Comments
APAR Information
APAR number
LI76253
Reported component name
XL C/C++ FOR LI
Reported component ID
5724X1400
Reported release
B10
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2011-07-12
Closed date
2011-10-24
Last modified date
2011-10-24
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
XL C/C++ FOR LI
Fixed component ID
5724X1400
Applicable component levels
RB10 PSY
UP
[{"Business Unit":{"code":"BU058","label":"IBM Infrastructure w\/TPS"},"Product":{"code":"SSXVZZ","label":"XL C\/C++ for Linux"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"B10","Line of Business":{"code":"LOB57","label":"Power"}}]
Document Information
Modified date:
17 October 2021