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.
Issue 226 removed the original prohibition on default template-arguments for function templates. However, the note in 22.214.171.124 [temp.deduct.type] paragraph 19 still reflects that prohibition. It should be revised or removed.
Rationale (February, 2010):
The problematic note was removed as a by-product of the changes for variadic templates, document N2284.