Fixes are available
XL C/C++ for AIX Fix Pack 4 (June 2013 PTF) for 12.1
XL C/C++ for AIX Fix Pack 5 (September 2013 PTF) for 12.1
XL C/C++ for AIX Fix Pack 7 (January 2014 PTF) for 12.1
XL C/C++ for AIX Fix Pack 8 (March 2014 PTF) for 12.1
XL C/C++ for AIX Fix Pack 11 (February 2015 PTF) for 12.1
XL C/C++ for AIX Fix Pack 12 (May 2015 PTF) for 12.1
XL C/C++ for AIX Fix Pack 13 (August 2015 Update) for 12.1
XL C/C++ for AIX Fix Pack 14 (December 2015 Update) for 12.1
XL C/C++ for AIX Fix Pack 15 (April 2016 Update) for 12.1
XL C/C++ for AIX Fix Pack 16 (July 2016 Update) for 12.1
XL C/C++ for AIX Fix Pack 17 (November 2016 Update) for 12.1
XL C/C++ for AIX Fix Pack 18 (February 2017 Update) for 12.1
XL C/C++ for AIX Fix Pack 19 (August 2017 Update) for 12.1
XL C/C++ for AIX Fix Pack 20 (March 2018 Update) for 12.1
XL C/C++ for AIX Fix Pack 6 (December 2013 PTF) for 12.1
XL C/C++ for AIX Fix Pack 9 (July 2014 PTF) for 12.1
XL C/C++ for AIX Fix Pack 10 (October 2014 PTF) for 12.1
XL C/C++ for AIX Fix Pack 21 (January 2019 Update) for 12.1
APAR status
Closed as program error.
Error description
Consider the following testcase: $cat test.cpp #include <iostream> class T { public: class D { public: const static int size = 0; }; template<typename minus_1, bool flag> class N { public: const static int size = minus_1::size + 1; }; }; int main() { typedef T::N<T::N<T::D,0>, 0> MyExample; std::cout << "MyExample::size = " << MyExample::size << "\n"; return 0; } The compiler incorrectly issues error message: "test.cpp", line 16.33: 1540-0062 (S) The incomplete class "N<T::D,0>" must not be used as a qualifier.
Local fix
Define the static member outside as in the example below: $cat test.cpp struct T { struct D { const static int size = 0; }; template<typename minus_1, bool flag> struct N { const static int size; }; }; template <typename X, bool Y> const int T::N<X,Y>::size = X::size+1; int main() { typedef T::N<T::N< T::D, 0>, 0> MyExample; int a = MyExample::size; return 0; }
Problem summary
PROBLEM DESCRIPTION: incomplete class error issued for member template USERS AFFECTED: An initializer for a static const member of a member template requires an instantiation of the same template. The compiler was processing the initializer before the instantiation, but the initializer requires the instantiation. The result was an incomplete class error for a missing instantiation.
Problem conclusion
Problem is fixed. The missing instantiation is completed before processing the initializer.
Temporary fix
Comments
APAR Information
APAR number
IV44274
Reported component name
XL C/C++ FOR AI
Reported component ID
5725C7200
Reported release
C10
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2013-06-17
Closed date
2013-06-17
Last modified date
2013-06-17
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 AI
Fixed component ID
5725C7200
Applicable component levels
Document Information
Modified date:
01 October 2021