Re: UTF8 crashes http-server (was Re: [Chicken-users] Spiffy is crashing)

[address@hidden]

On Wed, Apr 15, 2009 at 02:09:12PM +0200, address@hidden wrote:
> FWIW, I traced the problem to http-server.  Even the simple example on
> the wiki breaks when utf8 is loaded.  I will look deeper into this
> tonight (at work right now...), but I mention this in case anyone is
> reading along and wants to look at it.

The problem is in UTF8's string-search-positions procedure:

#;1> (use regex)
; loading library regex ...
#;2> (string-search-positions "a" "b" 0)
#f
#;3> (use utf8)
; loading /usr/pkg/lib/chicken/3/utf8.scm ...
; loading /usr/pkg/lib/chicken/3/utf8-support.so ...
; loading /usr/pkg/lib/chicken/3/utf8-lolevel.so ...
; loading /usr/pkg/lib/chicken/3/byte-string.so ...
#;4> (string-search-positions "a" "b" 0)
((-1 -1))

It's the -1 that's unexpected, since it's not a valid string index,
so trying to do anything with that causes it to fail big time.
It should just return #f on non-matching stuff.  Still not sure what
exactly causes this, though.

Cheers,
Peter
-- 
http://sjamaan.ath.cx
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