[Bug c++/71215] New: Compile error when using in-class initialization of template class attributes (c++11)

[markprediger at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71215

            Bug ID: 71215
           Summary: Compile error when using in-class initialization of
                    template class attributes (c++11)
           Product: gcc
           Version: 5.3.0
            Status: UNCONFIRMED
          Severity: blocker
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: markprediger at gmail dot com
  Target Milestone: ---

I can reproduce the bug on any gcc from version 4.7.3 to 5.3.0. gcc 6 seems not
to be affected.

Code (test.cpp):

class x {};

template<class, class>
class Member {};

class Object {
        Member<x, x> str = Member<x, x>(); // <- line 7
};

int main()
{
}


Command line:

g++ test.cpp -std=c++11


Error:

test.cpp:7:31: error: expected ';' at end of member declaration
  Member<x, x> str = Member<x, x>();
                               ^
test.cpp:7:32: error: expected unqualified-id before '>' token
  Member<x, x> str = Member<x, x>();
                                ^
test.cpp:7:28: error: wrong number of template arguments (1, should be 2)
  Member<x, x> str = Member<x, x>();
                            ^
test.cpp:4:7: note: provided for 'template<class, class> class Member'
 class Member {};


If you replace x with a primitive type, no error occures.
Also compiles with gcc 6.