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crash decoding SIGMA DP1 .X3F image

The application I am working on (Luminance HDR) crashes trying to decode a RAW image from SIGMA DP1 camera (file extension .X3F).

Library version is LibRaw-0.12.0-Beta4 with LibRaw-demosaic-pack-GPL2-0.12.0-Beta4

Here is the gdb output:

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7fffeab37710 (LWP 21659)]
LibRaw::foveon_interpolate (this=0x7fffeab09ad0) at ../LibRaw-demosaic-pack-GPL2-0.12.0-Beta4/dcraw_foveon.c:389
389 FORC3 ddft[i+1]

[1] += (short) image[row*width+col][c];
Hope this can help you
Franco Comida (Luminance HDR developer)