Re: Lisp object that refers to a C struct

[Paul Eggert]

On 10/17/2012 09:50 PM, Eli Zaretskii wrote:
>> Won't this have problems on platforms where
>> > (EMACS_INT) pwatch < MOST_NEGATIVE_FIXNUM,
>> > or where MOST_POSITIVE_FIXNUM < (EMACS_INT) pwatch?

> Given what XLI does, I don't see how this could happen

To be honest I haven't followed all the back-and-forth on this,
but in general it's not safe to convert a pointer to
an Emacs fixnum, as this can lose information: the payload
of an Emacs fixnum is typically narrower than a pointer.