On 10/26/22 14:10, 0xEAB wrote: > I guess, this fancy behavior is inherited from C.
Yes. It is called integer promotions: https://dlang.org/spec/type.html#integer-promotions (The next section is related as well.) > I know this is advanced stuff, but the compiler *could* even prove that > the calculation(s) won’t go beyond `ubyte.max`. Apparently it does not go that far but there is Value Range Propagation: https://www.digitalmars.com/articles/b62.html That article links to this forum post: https://www.digitalmars.com/d/archives/digitalmars/D/Value_Preservation_and_Polysemy_80224.html#N80293 Ali
