Code review comment for lp:~vanvugt/mir/clang

616 - Displacement const disp;
617 + Displacement disp;
... and Point and Rectangle

The error is "default initialization of an object of const type '...' requires a user-provided default constructor"

I'd rather we didn't drop const and value initialize instead:

Displacement const disp{};

Alternatively we could provide appropriate constructors:

Displacement() {}
Displacement(DeltaX const& dx, DeltaY const& dy) : dx{dx}, dy{dy} {}

Note that in gcc we don't see this because gcc "allows const objects with no initializer or user-provided default constructor if the defaulted constructor initializes all the subobjects.", which IMHO, is what should have been in the standard in the first place... (see http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42844)