https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80417
Bug ID: 80417
Summary: GCC does not accept a well-formed code of using
declaration with pack expansion results inheriting
constructor
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: boostcpp at gmail dot com
Target Milestone: ---
GCC does not accept a well-formed code of using declaration with pack expansion
results inheriting constructor.
Following code shall be well-formed but GCC reject it.
struct A
{
A( int ) { }
} ;
template < typename ... Types >
struct B : Types ...
{
// Inheriting Constructor
// GCC reject it
/// Clang accept it
using Types::Types... ;
} ;
int main()
{
B<A> obj(0) ;
}
Although I have no practical application for this code, I see no wording in the
standard prohibit this so this shall be well-formed.
