FFI Report, CVS Id 1.11
Alastair David Reid
reid at cs.utah.edu
Fri Aug 24 14:20:41 EDT 2001
> | > PtrDiff
> I must say that I rather agree with Marcin here. Let's just use Int
> (but not Int32!). On machines with big address spaces, Ints will be
> big. Keep it simple. Oh, and efficient!
For all the reasons I've used in the past of avoiding future problems
(especially those associated with Int), I disagree. But I didn't seem
to make much headway last time so let me just make this suggestion:
Let's add some asserts to the affected code so that we'll get warnings
when we try to compile the code on a system that breaks these assumptions.
Something like this:
#if SIZEOF_INT != SIZEOF_PTR
#error "Pointer difference operation could overflow - please fix"
Alastair Reid reid at cs.utah.edu http://www.cs.utah.edu/~reid/
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