Re: Compiling Elisp to a native code with a GCC plugin

[Lars Magne Ingebrigtsen <larsi@gnus.org>]

David Kastrup <dak@gnu.org> writes:

> +   end_byte = CHAR_TO_BYTE (end);
> + 
> +   if (! memcmp (SDATA (string), BYTE_POS_ADDR (start_byte),
> + 		end_byte - start_byte))
>
> That is assuming that both string and buffer are identically encoded
> (nowadays that likely means both have the same multibyteness).

Which brings me back to the other question I had, about buffer
internals.  :-)

It was a guess based on Fbuffer_substring doing this:

  memcpy (SDATA (result), BYTE_POS_ADDR (start_byte), end_byte - start_byte);

So I thought that if you could create a string by just memcpy()-ing data
from the buffer, then it seemed likely that you could compare them with
memcmp().  But that's probably wrong?  

-- 
(domestic pets only, the antidote for overdose, milk.)
  larsi@gnus.org * Lars Magne Ingebrigtsen