[postgis-users] itemnquery limitation

[Daniel Morissette]

David Blasby wrote:
> 
> Looks like the problem is in msReturnQuery(), msReturnPage(), or 
> regcomp() - not in the postgis connector.
> 
> DANIEL - do you see any reason why there would be a problem here?
> 

Hard to tell what's wrong without being able to run this in tghe 
debugger myself.  The problem seems to appear here:

 > #19 0x08057006 in msReturnPage (msObj=0x80c2008,
 >     html=0x1 <Address 0x1 out of bounds>, mode=0, papszBuffer=0x0)
 >     at maptemplate.c:2259
 > #20 0x080577e7 in msReturnQuery (msObj=0x80c2008,
 >     pszMimeType=0x80a83d1 "text/html", papszBuffer=0x0) at
 > maptemplate.c:2549


msReturnPage() is passed 'html=0x1' ... this should be the HTML 
template, so it should be a pointer to a valid string buffer.

Since the line numbers don't match either the 4.0 or the 3.6.6 source I 
couldn't tell exactly which call to msReturnPage() inside 
msReturnQuery() fails (there are several calls).  And anyway, even if 
the problem manifests itself there, it is quite likely happening because 
a layer or map object has been freed or corrupted somewhere else in the 
code.

If you guys can package a reproduceable test case for this then perhaps 
you can file it in the MapServer bugzilla and I can try to reproduce it.

Daniel
-- 
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  Daniel Morissette               morissette at dmsolutions.ca
  DM Solutions Group              http://www.dmsolutions.ca/
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