[Qgis-developer] Re: [GRASS5] QGIS GRASS digitizer new crash

[Markus Neteler]

On Wed, Aug 17, 2005 at 02:30:39PM -0500, Daniel Calvelo Aros wrote:
> [me]
> > > Have you got any idea of where in the QGIS code the update is triggered?
> [Maciek]
> > I completely useles here, sorry. Radim?
> > 
> > > I'm pretty sure this is a problem with interpreting an update statement.
> > > Also, what does an empty char column stand for? NULL? 0-length string ""?
> > 
> > I don't know what blank char entry is filled with indeed. The funny 
> > thing is that QGIS crashes only when I leave the char column blank 
> > but fill the numerical entry. If I leave both blank, all is OK.
> 
> Is there a debugging facility in QGIS, such as a compiler option or an
> environment variable that you could use to gather more information referring
> to the error?

Yes, this should help to enable QGIS debug:

./configure --help | grep debug
  --enable-debug          Enable debuging messages [default=no]

Markus