Re: address@hidden: redisplay abort if GLYPH_DEBUG turned on]

[Kim F. Storm]

Miles Bader <address@hidden> writes:

> address@hidden (Kim F. Storm) writes:
>> There are other places which set stop_charpos to 0, so
>> there is IT_CHARPOS <= stop_charpos is not an invariant.
>>
>> So Miles' change to the xassert is ok.  But the comment need to be modified 
>> as well. 
>
> The thing that makes me nervous is that there seem to also be other
> similar xasserts, e.g. [xdisp.c:2727]:
>
>   xassert (STRINGP (it->string)
>          || (it->stop_charpos >= BEGV
>              && it->stop_charpos >= IT_CHARPOS (*it)));
>
> and [xdisp.c:4068]:
>
>       xassert (it->stop_charpos >= BEGV
>              && it->stop_charpos <= it->end_charpos);
>
> implying that there _are_ some sorts of rules for stop_charpos, but I
> have no idea what they are.  [I haven't had any crashes involving these
> other xasserts.]

You may be right -- perhaps there is a different way to fix the original
problem...   I will look into it.

-- 
Kim F. Storm <address@hidden> http://www.cua.dk