[GRASS5] r.slope.aspect crash - libes/gis/null_data.c

[Markus Neteler]

(cc RT)

On Fri, Jan 18, 2002 at 11:09:36AM -0500, Helena Mitasova wrote:
> Markus
> 
> I used r.slope.aspect for curvatures quite a bit and did not have a problem
> (except that it does not write the custom color table as the rst programs do
> which is annoying)
> - I will test it too, but I want to ask whether you had a mask set, because I
> might not have used it with a mask.
> Helena

...no, I didn't:

GRASS:~ >g.list rast |grep MASK
GRASS:~ >

It can be even replicated with the Spearfish data.

Markus


> 
> (If you are computing it to visualize the waves along contours, I am covering
> that in the applications, so do not worry about that right now)
> 
> Neteler wrote:
> 
> > Hi,
> >
> > today we realized a nice crash of r.slope.aspect:
> >
> > r.slope.aspect elev pc=z.rsa.pcurf
> > percent complete: Segmentation fault (core dumped)
> >
> > If you try the spearfish data:
> > r.slope.aspect elevation.dem pc=z.rsa.pcurf
> > percent complete: Segmentation fault (core dumped)
> >
> > The debugger tells us that there is something strange in
> > libes/gis/null_data.c
> > Program received signal SIGSEGV, Segmentation fault.
> > 0x8056635 in G_set_f_null_value (fcellVals=0x0, numVals=1) at null_val.c:295
> > /ssi0/ssi/neteler/cvsgrass/src/libes/gis/null_val.c:295:9157:beg:0x8056635
> > (gdb)
> >
> > Unfortunately this doesn't tell me anything? Probably the NULL
> > implemenation is weird in null_val.c?
> >
> > To our surprise the aspect/slope calculation runs well.
> >
> > It would be nice to have that fixed...
> >
> > Thanks,
> >
> >  Markus