Re: address@hidden (Pavel Janík)] Re: crash in emacs-21.1

[Kenichi Handa]

address@hidden (Gerd Moellmann) writes:
> I guess I have it.  It just occurred to me that for the worst case of
> having to add LEADING_CODE_8_BIT_CONTROL for every byte in its source
> string, str_as_multibyte needs a buffer that's somwhere twice as large
> as the input string.  The function c-guess-basic-syntax has a large
> byte-code string of ~24K and that fits this observation nicely.

> When I make read_buffer at least 2 * nbytes large, things go well.
> I'll install that; issue settled.

As I wrote in the previous mail, the problem was that you
just doubled read_buffer_size, instead of setting it to
nbytes.

> It might be better to rewrite str_as_multibyte and maybe other similar
> functions in the future, or let them at least check for buffer
> overruns.

I agree.

---
Ken'ichi HANDA
address@hidden