mskala@opal:~/xcmap$ gdb /usr/local/src/xconq-latest/xconq/sdl/xconq
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(gdb) run -g maptest.g
Starting program: /usr/local/src/xconq-latest/xconq/sdl/xconq -g maptest.g
[New Thread 16384 (LWP 28017)]

              Welcome to X11 Xconq version 7.5pre (November 2004)

Xconq is free software and you are welcome to distribute copies of it
under certain conditions; type "o copying" to see the conditions.
There is absolutely no warranty for Xconq; type "o warranty" for details.
Warning: maptest.g:230: Can't set unknown global named `bigicons'.
Making countries; done.
Growing countries; done.
Assigning players to sides; done.
Setting up AIs; done.

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 16384 (LWP 28017)]
0x0815771f in blacken_masked_area(a_image_family*, a_image*, int, int, int) (
    imf=0x825a9f0, img=0x846fb50, rd=65535, g=0, b=65535) at imf.c:1233
1233            img->rawpalette[4 * black + 0] = black;
(gdb) bt
#0  0x0815771f in blacken_masked_area(a_image_family*, a_image*, int, int, int)
    (imf=0x825a9f0, img=0x846fb50, rd=65535, g=0, b=65535) at imf.c:1233
#1  0x0805e3be in sdl_copy_color_image (imf=0x0, img=0x846fb50,
    surface=0x8473248) at sdlimf.cc:125
#2  0x0805e133 in sdl_interp_image_1 (imf=0x825a9f0, img=0x846fb50,
    subimg=0x846fb50, subi=0, force=0) at sdlimf.cc:107
#3  0x0805df77 in sdl_interp_image (imf=0x825a9f0, img=0x846fb50, force=0)
    at sdlimf.cc:58
#4  0x0805deac in sdl_interp_imf(a_image_family*, a_image*, int) (
    imf=0x825a9f0, img=0x846fb50, force=0) at sdlimf.cc:40
#5  0x08156821 in add_shrunken_image (imf=0x825a9f0) at imf.c:863
#6  0x08157176 in best_image(a_image_family*, int, int) (imf=0x825a9f0, w=0,
    h=1) at imf.c:1037
#7  0x0804f616 in init_terrain_images () at sdlinit.cc:179
#8  0x0804f32d in init_display() () at sdlinit.cc:77
#9  0x0804e0c5 in init_all_displays () at sdlmain.cc:2296
#10 0x0804ef8c in launch_game() () at sdlmain.cc:2854
#11 0x08049fd7 in main (argc=136732824, argv=0x1) at sdlunix.cc:115
#12 0x40414bb4 in __libc_start_main () from /lib/libc.so.6
(gdb) list
115                     launch_game();
116             }
117             if (!option_popup_new_game_dialog)
118                 print_instructions();
119             /* At this point we know we can use popups instead of stdio for
120             warnings and messages and such. */
121             use_stdio = FALSE;
122             /* Go into the main play loop. */
123             ui_mainloop();
124
(gdb) quit