[GRASS-dev] [bug #4725] (grass) nviz crashed while volume visualisation

[Harmish Bowman via RT]

[ https://intevation.de/rt/webrt?serial_num=4725 ]

Hi,

"nviz volume=map3d" segfaults.. see bug report for spearfish example.


I've traced it back to incorrect mode in  nviz/src/volume.c
slice_get_drawmode()

mode=1969841253 (or so)
when it should be like DM_GOURAUD=256 or DM_FLAT=512

actual segfault seems to happen after slice_get_drawmode()'s
return (TCL_ERROR);
???

called from scripts/panel_vol.tcl line ~450:
    set Nv_(ShadeStyle) [Nvol$curr slice get_drawmode]



I followed "mode" into lib/ogsf/GVL2.c GVL_slice_get_drawmode()
and then *gvl to gvl_get_vol() in lib/ogsf/gvl.c, but then I get lost.


uninit'd variable?


Hamish


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