Marcus Clyne skrev: > I am assuming that the 'exact' (that is relative in the stack) > location of the str.len is used, rather than an offset from the > beginning of the 'str' variable, with the position of str.len > calculated at runtime each time it's accessed. Is this correct? That is correct as far as I know. The offsets inside a struct are known at compile time, so nothing like that should be calculated at runtime. You could check the assembly output of the 2 versions to be certain.
