Viewing file:  alias-decl-10.C (1.12 KB) -rw-r--r--
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// { dg-do compile { target c++11 } }
template <class T> using Ptr = T*;
Ptr<unsigned>; // { dg-error "does not declare anything" }
Ptr<char><int>; // { dg-error "not a template|does not declare anything" }
template class Ptr<int>;//{ dg-error "alias template specialization\[^\n\r\]*after\[^\n\r\]*class" }
template <class T> using Arg = T;
struct A {};
template class Arg<A>;// { dg-error "alias templ\[^\n\r\]*specialization\[^\n\r\]*Arg<A>\[^\n\r\]*after\[^\n\r\]*class" }
template <template <class> class TT, class T> using Instantiate = TT<T>;
template <class> struct Vector {};
// The below is not OK, because of [dcl.type.elab]:
//
// If the identifier resolves to a typedef-name or the
// simple-template-id resolves to an alias template
// specialization, the elaborated-type-specifier is ill-formed.
//
template class Instantiate<Vector, int>;//{ dg-error "alias template specialization\[^\n\r\]*after\[^\n\r\]*class" }
template <class T> struct S {};
template<class T> using SFor = S<T>;
// Likewise, this is not OK.
template class SFor<int>; //{ dg-error "alias template specialization\[^\n\r\]*after\[^\n\r\]*class" }
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