Package: openglad
Version: 0.98-3
Followup-For: Bug #463158
I have the same problem as Guus Sliepen. When I start openglad, it opens a
blank window and then segfaults.
I compiled it myself with just -g, and found that it crashes here:
#0 0x000000000045bde5 in Scale_SuperEagle (src=0x733f30 "", srcx=0, srcy=0,
srcw=320, srch=200, src_pitch=320, src_height=200, dst=0x2b493fd69000 "",
dstx=0, dsty=0, dst_pitch=640) at sai2x.cpp:472
#1 0x000000000045d245 in Screen::RenderAndReturn (this=0x6c2380, x=0, y=0,
w=320, h=200) at sai2x.cpp:810
#2 0x0000000000441033 in video::buffer_to_screen (this=0x679710,
viewstartx=0, viewstarty=0, viewwidth=320, viewheight=200)
at video.cpp:1212
#3 0x0000000000434840 in screen (this=0x679710, howmany=1) at screen.cpp:127
#4 0x0000000000405b3c in main (argc=1, argv=0x7fff6e32ad78) at glad.cpp:71
468 }
469
470 *dP = product1a;
471 *(dP+1) = product1b;
472 *(dP+dst_pitch) = product2a;
473 *(dP+dst_pitch+1) = product2b;
474
475 bP += 1;
476 dP += 2;
However, I can't figure out why. The function Scale_SuperEagle enlarges
the 320x200 surface 'screen' onto the 640x400 surface 'render'. I poked
around but it all checks out -- the pointer dP points into a pixel array
that should be large enough to do what it's doing.
I suspect this is a side effect of some earlier bug, because when I
tried to run it under valgrind it didn't crash there and actually continued
to the title screen.
You might have to be on an amd64 system to reproduce this.
Richard Braakman
-- System Information:
Debian Release: lenny/sid
APT prefers unstable
APT policy: (500, 'unstable')
Architecture: amd64 (x86_64)
Kernel: Linux 2.6.22.6
Locale: LANG=en_US, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash
Versions of packages openglad depends on:
ii libc6 2.7-9 GNU C Library: Shared libraries
ii libgcc1 1:4.3.0-1 GCC support library
ii libsdl-mixer1.2 1.2.8-3 mixer library for Simple DirectMed
ii libsdl1.2debian 1.2.13-2 Simple DirectMedia Layer
ii libstdc++6 4.3.0-1 The GNU Standard C++ Library v3
openglad recommends no packages.
-- no debconf information
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