This is an unofficial snapshot of the ISO/IEC JTC1 SC22 WG21 Core Issues List revision 112e. See http://www.open-std.org/jtc1/sc22/wg21/ for the official list.
[Voted into the WP at the March, 2011 meeting as part of paper N3262.]
The ellipsis for a parameter pack enters the normal declarator grammar as part of the declarator-id nonterminal. In contrast, however, the abstract-declarator grammar has no counterpart to declarator-id; instead, the ellipsis is one of the productions for the abstract-declarator nonterminal itself. It is thus impossible to declare a parameter pack for a pointer or reference using an abstract declarator, e.g.,
template<typename... T> void f(T& ...t); // t is a parameter pack template<typename... T> void f(T& ...); // equivalent to void f(T&, ...)