Re: oops? read/write vs type of length parameter

[David Kastrup]

Jim Meyering <address@hidden> writes:

> What about when EMACS_INT is defined to "int"?
>
> Someone will inevitably call your write-like function
> with a length of type size_t -- many existing uses do just that --
> and by using a signed type, you will have converted their long
> yet valid (2-4GiB), buffer length, into a negative number.

Resulting in an error or nothing happening.  In contrast, if a negative
number is turned into a long yet valid (2-4GiB) number, it is very
likely that unintended memory areas will get stomped over.

-- 
David Kastrup