[GRASS-dev] [bug #5037] (grass) GRASS 6.3: d.graph

[Hamish]

> > this bug's URL: http://intevation.de/rt/webrt?serial_num=5037
> > -------------------------------------------------------------------
> > 
> > Subject: GRASS 6.3: d.graph segfault
> > 
> > d.graph segfaults on startup. (GRASS 6.3-cvs only)
..
Glynn:
> It segfaults because trans is NULL, because R_RGB_color()
> is called before R_open_driver().
> 
> R_open_driver() or R__open_quiet() must be called before almost any
> other R_* functions are called. The only exceptions are:
>
> 	R_parse_monitorcap
> 	R_set_update_function
> 	R_call_update_function
> 	R_has_update_function
> 	R_set_cancel
> 	R_get_cancel
> 	R_pad_freelist
> 	R_pad_perror
> 
> The old library would silently ignore any operations performed while
> not connected to a driver.


There's another problem, G_str_to_color() [lib/gis/color_str.c] returns
an error if a color is given as a R:G:B triplet.

It seems to work fine with triplets from other modules (d.vect).

e.g.:

G63> echo "symbol basic/box 16 50 50 green 50:50:50" | d.graph
WARNING: [50:50:50]: No such color


sscanf() fills red,green,blue with garbage? [which fails >255 test]

    ret = sscanf (buf, "%d%[,:; ]%d%[,:; ]%d", red, temp, green, temp, blue);


I'm having no luck debugging this. R,G,B getting cast to another type
somehwhere????

?

thanks,
Hamish