This is an unofficial snapshot of the ISO/IEC JTC1 SC22 WG21 Core Issues List revision 110c. See http://www.open-std.org/jtc1/sc22/wg21/ for the official list.
[Moved to DR at the November, 2014 meeting.]
Similarly to issue 1738, it is not clear whether it is permitted to explicitly instantiate or specialize the call operator of a polymorphic lambda (via decltype).
Proposed resolution (February, 2014):
Add the following as a new paragraph following 7.5.5 [expr.prim.lambda] paragraph 21:
The closure type associated with a lambda-expression has an implicitly-declared destructor (11.4.7 [class.dtor]).