[boost] The noexcept Specifier & Block

http://www.open-std.org/JTC1/SC22/WG21/docs/papers/2009/n2855.html#noexcept I gather that noexcept void f() { throw 0; } is supposed to be ill-formed versus well-formed noexcept void f() { noexcept { throw 0; } } invoking undefined behaviour. Well, this is not helpful. Both forms shall be well-formed with defined behaviour: invocation of unexpected() at throw point. regards, alexander.