This is an unofficial snapshot of the ISO/IEC JTC1 SC22 WG21 Core Issues List revision 112c. See http://www.open-std.org/jtc1/sc22/wg21/ for the official list.
According to 11.4.7 [class.dtor] paragraph 5,
A destructor is trivial if it is not user-provided and if:
the destructor is not virtual,
It is not clear why this restriction is needed, and it should be removed if it is not needed.
Rationale (February, 2014):
A trivial destructor is known to perform no actions and thus need not be invoked. A virtual destructor, however, might be member of a base class of an unknown derived class; it must therefore be called virtually in case an overriding virtual function performs some actions.