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

[Andreas Schwab]

David Kastrup <address@hidden> writes:

> Not really sure about that.
>
> + looking_at_literally (Lisp_Object string)
> + {
> +   int start_byte = CHAR_TO_BYTE (PT);
                       PT_BYTE
> +   int end_byte, end = PT + SCHARS (string);
>
> PT + SCHARS (string) can overflow here.  Better check first rather than
> later whether ZV - PT < SCHARS (string).
>
> Yes, I know that most-positive-fixnum <= MAX_INT/2

How do you "know" that?

Andreas.

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Andreas Schwab, address@hidden
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