https://issues.dlang.org/show_bug.cgi?id=12944
--- Comment #1 from Kapps <opantm2+db...@gmail.com> --- Also worth noting that fixing this would require all peek and operations that alter the value (i.e., opIndexAssign) to allocate if storing a reference to another Variant. https://github.com/D-Programming-Language/phobos/pull/2188#issuecomment-44763385 has some discussion on this. It could get somewhat expensive, but would only be in the rare situations where this bug could be observed. --