Bug#382904: Touching left edge with xjump theme causes segmentation fault

[Josh Triplett]

Bas Wijnen wrote:
> On Sun, Aug 13, 2006 at 08:16:45PM -0700, Josh Triplett wrote:
>> With the theme set to xjump, running into the left edge consistently
>> causes a segmentation fault.  ~/.sdljump.cfg attached.
> 
> I can't reproduce this.  Perhaps it has something to do with the openGL
> rendering.  Could you run it in gdb and send a stack backtrace?

Good call about OpenGL; backtrace:

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This GDB was configured as "i486-linux-gnu"...Using host libthread_db library "/lib/tls/i686/cmov/libthread_db.so.1".

(gdb) run
Starting program: /tmp/sdljump-0.91-1/src/sdljump
[Thread debugging using libthread_db enabled]
[New Thread -1484617504 (LWP 21564)]

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread -1484617504 (LWP 21564)]
GL2D_BlitLargeGLpart (src=0x823b1f0, sx=-2, sy=405, x=-2, y=405, w=16, h=16,
    alpha=255 'ÿ') at SDL_2dgl.c:478
478				GL2D_BlitGLpart(src->pics[i][j], sx2, sy2, x+xCount, y+yCount, w2, h2, alpha);
(gdb) bt
#0  GL2D_BlitLargeGLpart (src=0x823b1f0, sx=-2, sy=405, x=-2, y=405, w=16,
    h=16, alpha=255 'ÿ') at SDL_2dgl.c:478
#1  0x0804f333 in GL2D_BlitLargeSurfaceGL (src=0x823b1f0, src_r=0x0,
    dest_r=0x823b1f0, alpha=255 'ÿ') at SDL_2dgl.c:498
#2  0x0805599b in JPB_PrintSurface (src=0x823b1f0, src_r=0xafb07d90,
    dest_r=0x0) at surface.c:213
#3  0x08049f38 in drawBg (surf=0x81d6b48, x=-2, y=405, w=16, h=16) at game.c:45
#4  0x0804a031 in recoverScr (gfx=0xafb08020, game=0xafb07eb0, x=-1, y=288,
    w=45, h=45) at game.c:770
#5  0x0804a3b9 in undrawHero (heronum=0, gfx=0xafb08020, game=0xafb07eb0)
    at game.c:747
#6  0x0804bff7 in updateGame (game=0xafb07eb0, gfx=0xafb08020, ms=10)
    at game.c:462
#7  0x0804c23f in playGame (gfx=0xafb08020, numHeros=1) at game.c:261
#8  0x0804e241 in mainMenu (gfx=0xafb08020) at menu.c:249
#9  0x0804c8b3 in main (argc=1, argv=0xafb08354) at main.c:83
(gdb) The program is running.  Exit anyway? (y or n)

I can easily and consistently reproduce this, so let me know if you need
more information.

- Josh Triplett

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