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.
According to 11.6 [class.local] paragraph 1,
Declarations in a local class shall not odr-use (6.3 [basic.def.odr]) a variable with automatic storage duration from an enclosing scope.
This restriction should apply as well to the this pointer when the class is local to a non-static member function.
Rationale (January, 2014):
The restrictions in _N4567_.5.1.1 [expr.prim.general] limiting the locations in which this may appear already prevent uses of the containing member function's this where the local class's this does not hide it.