[Mapserver-users] Error message getting eaten in 4.0?

[Frank Warmerdam]

David Blasby wrote:
> I've had several people ask me about getting an error like:
> 
> msDrawMap(): Image handling error. Failed to draw layer named 'test'.
> 
> I've traced back through the code, and I've verified that I'm 
> (mappostgis.c) calling msSetError(..), then returning MS_FAILURE. But, I 
> still get this error message.
> 
> This is causing no end of confusion for the postgis connection users. 
> The error messages it tries to give would be extreamly helpful to people 
> with problems.

Dave,

I agree, this is causing a crazy amount of frustration and wheel spinning.
We have "error stacking" now don't we?  Is there a problem with making
4.0 actually report the whole error stack by default?  Alternatively, could
the msDrawMap() function *not* call msSetError() if there is already an
error message set?  Daniel?  Steve?  I am willing to hack on this if you guys
think it is a good idea, but don't have time to work on it.

While I am nervous about changes just before a 4.0 release, I think it could
make a substantial difference in the perceieved (and real!) usability of the
4.0 release.

Best regards,

-- 
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I set the clouds in motion - turn up   | Frank Warmerdam, warmerdam at pobox.com
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and watch the world go round - Rush    | Geospatial Programmer for Rent