#727: Rast_get_d_color() segfault in trunk
------------------------------------------+---------------------------------
Reporter: hamish | Owner: grass-dev@lists.osgeo.org
Type: defect | Status: new
Priority: normal | Milestone: 7.0.0
Component: Raster | Version: svn-trunk
Keywords: r.what, Rast_is_null_value() | Platform: Linux
Cpu: x86-64 |
------------------------------------------+---------------------------------
Hi,
I'm getting a segfault in grass7's r.what if I give it an out-of-region
coordinate.
e.g.
{{{
#spearfish
r.what -n -r input=elevation.dem east_north=1,2
}}}
happens for both CELL, FCELL, and DCELL maps.
gdb:
{{{
(gdb) run -n -r input=elevation.dem east_north=1,2
easting|northing|site_name|elevation.dem|elevation.dem_color
** note ** 1 2 is outside your current window
[New Thread 0x7fedabfd06e0 (LWP 19658)]
Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7fedabfd06e0 (LWP 19658)]
0x00007fedab7836c6 in Rast_is_c_null_value (cellVal=0x184ef68) at
null_val.c:211
211 return *cellVal == (CELL) 0x80000000;
(gdb) l
206 \return FALSE otherwise
207 */
208 int Rast_is_c_null_value(const CELL * cellVal)
209 {
210 /* Check if the CELL value matches the null pattern */
211 return *cellVal == (CELL) 0x80000000;
212 }
213
214 /*!
215 \brief To check if a FCELL raster value is set to NULL
(gdb) bt
#0 0x00007f937bf6b6c6 in Rast_is_c_null_value (cellVal=0x127df68) at
null_val.c:211
#1 0x00007f937bf6b67c in Rast_is_null_value (rast=0x127df68, data_type=0)
at null_val.c:183
#2 0x00007f937bf722ac in Rast_get_d_value (rast=0x127df68, data_type=0)
at raster.c:271
#3 0x00007f937bf5f984 in Rast__lookup_colors (raster=0x127df68,
red=0x7fff847c559f "", grn=0x7fff847c559e "",
blu=0x7fff847c559d "\177", set=0x7fff847c559c "", n=0,
colors=0x7fff847c6a10, mod=0, rules_only=0, data_type=0) at
color_look.c:261
#4 0x00007f937bf5f55d in Rast_lookup_colors (raster=0x127df68,
red=0x7fff847c559f "", grn=0x7fff847c559e "", blu=0x7fff847c559d "\177",
set=0x7fff847c559c "", n=1, colors=0x7fff847c6a10, map_type=0) at
color_look.c:90
#5 0x00007f937bf5e546 in Rast_get_color (rast=0x127df68,
red=0x7fff847c573c, grn=0x7fff847c5738, blu=0x7fff847c5734,
colors=0x7fff847c6a10, map_type=0) at color_get.c:44
#6 0x00007f937bf5e5b4 in Rast_get_c_color (rast=0x127df68,
red=0x7fff847c573c, grn=0x7fff847c5738, blu=0x7fff847c5734,
colors=0x7fff847c6a10) at color_get.c:71
#7 0x0000000000402783 in main (argc=5, argv=0x7fff847d8c98) at main.c:384
}}}
DCELL is the same but different:
{{{
0x00007f630db80709 in Rast_is_d_null_value (dcellVal=0x22deb60) at
null_val.c:258
258 return *dcellVal != *dcellVal;
(gdb) l
253 \return TRUE if DCELL raster value is NULL
254 \return FALSE otherwise
255 */
256 int Rast_is_d_null_value(const DCELL * dcellVal)
257 {
258 return *dcellVal != *dcellVal;
259 }
260
261 /*!
262 \brief To insert null values into a map.
(gdb) bt
#0 0x00007f630db80709 in Rast_is_d_null_value (dcellVal=0x22deb60) at
null_val.c:258
#1 0x00007f630db80698 in Rast_is_null_value (rast=0x22deb60, data_type=2)
at null_val.c:189
#2 0x00007f630db872ac in Rast_get_d_value (rast=0x22deb60, data_type=2)
at raster.c:271
}}}
thanks,
Hamish
--
Ticket URL: <https://trac.osgeo.org/grass/ticket/727>
GRASS GIS <http://grass.osgeo.org>