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Re: valid_pointer_p

From: Andreas Schwab
Subject: Re: valid_pointer_p
Date: Sat, 12 Aug 2006 14:36:22 +0200
User-agent: Gnus/5.110006 (No Gnus v0.6) Emacs/22.0.50 (gnu/linux)

Eli Zaretskii <address@hidden> writes:

> ??? Don't we have macros, like INTEGERP, SUBRP, etc. to do that
> without dereferencing?  The length of the primitive Lisp types is
> known, right?

Try to find out the size of a vector object.

    /* Vector of Lisp objects, or something resembling it.
       XVECTOR (object) points to a struct Lisp_Vector, which contains
       the size and contents.  The size field also contains the type
       information, if it's not a real vector object.  */


Andreas Schwab, SuSE Labs, address@hidden
SuSE Linux Products GmbH, Maxfeldstraße 5, 90409 Nürnberg, Germany
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