AFAIK that can break because of the strict aliasing rules (although it might work in practice). Even if char can alias anything, the reverse is not true and you can't legally store other types in a static array of char type. You should be able to use anonymous memory though, so for example if you get your storeag via mmap or some other allocator it should be fine.
There isn't anything called mmap in the C standard. That's what I mean by it not being possible to implement in standard C. It is possible in some implementations of C.
