https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66350
Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
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CC| |msebor at gcc dot gnu.org
--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
Here's a reduced test case compiled with -Wall in C++ 98 mode:
$ cat t.cpp && ~/bin/gcc-5.1.0/bin/g++ -Wall -std=c++98 -c t.cpp
template <class T> struct A { A (T) { } };
template <class T> struct B: A<T> {
using typename A<T>::A;
};
B<int> b (0);
t.cpp:3:26: warning: inheriting constructors only available with -std=c++11
or -std=gnu++11
using typename A<T>::A;
^
I don't think gcc is incorrect in accepting the code either in C++ 98 mode as
an extension, or in C++ 11 mode. In the latter mode, accepting it is in
keeping with the resolution of DR 147. Naming the constructor (Clang accepts
the test case above in C++ 11 mode). That is, when 'A<T>::A' nominates class
template A the name is instead taken to name the ctor of A.
