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* [Bug c++/60786] New: In C++11 an explicit instantiation with an unqualified name must be in the right namespace
@ 2014-04-08 12:20 redi at gcc dot gnu.org
  2014-04-15 19:06 ` [Bug c++/60786] " redi at gcc dot gnu.org
                   ` (3 more replies)
  0 siblings, 4 replies; 5+ messages in thread
From: redi at gcc dot gnu.org @ 2014-04-08 12:20 UTC (permalink / raw)
  To: gcc-bugs

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60786

            Bug ID: 60786
           Summary: In C++11 an explicit instantiation with an unqualified
                    name must be in the right namespace
           Product: gcc
           Version: 4.9.0
            Status: UNCONFIRMED
          Keywords: accepts-invalid
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: redi at gcc dot gnu.org

This should not be accepted in C++11 mode:

namespace A {
  template<typename T> struct B { };
}

using A::B;
template class B<int>;


[temp.explicit] p3:
"An explicit instantiation shall appear in an enclosing namespace of its
template. If the name declared in the explicit instantiation is an unqualified
name, the explicit instantiation shall appear in the namespace where its
template is declared or, if that namespace is inline (7.3.1), any namespace
from its enclosing namespace set."

This is a change from C++03:

"A definition of a class template or class member template shall be in scope at
the point of the explicit instantiation of the class template or class member
template."


^ permalink raw reply	[flat|nested] 5+ messages in thread
end of thread, other threads:[~2021-08-04 20:42 UTC | newest]

Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2014-04-08 12:20 [Bug c++/60786] New: In C++11 an explicit instantiation with an unqualified name must be in the right namespace redi at gcc dot gnu.org
2014-04-15 19:06 ` [Bug c++/60786] " redi at gcc dot gnu.org
2014-04-15 19:08 ` redi at gcc dot gnu.org
2014-12-14 15:37 ` ville.voutilainen at gmail dot com
2021-08-04 20:42 ` pinskia at gcc dot gnu.org

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