Re: ptrdiff_t misuse [was :Re: (empty)]

[Stefan Monnier]

>> if someone ever bumps into a problem
>> because of such an overflow, I'll be*super*  happy, because it means
>> that all the performance problems we get with long lines have
>> been fixed.
> No, if the overflow happens to generate a small integer,
> Emacs will run quickly and incorrectly
> without the patch in question.

But "fixing" the code like you have will just make it run "correctly"
and so super-extra slow that the user will just think it's frozen.
So, better keep the code clean since in any case it won't work,


        Stefan