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Debug problems with SVN 3486

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Raistlin:
Hi,

i encounter sporadic program crashes with SVN version 3846. So i wanted to generate a backtrace with gdb, but when starting the game in gdb i got the following message and the start was aborted.

=======================================================
(gdb) run +set vid_fullscreen 0 +set vid_grabmouse 0 +set developer 1
Starting program: /home/tron/Entwicklung/ufoai/ufo +set vid_fullscreen 0 +set vid_grabmouse 0 +set developer 1
[Thread debugging using libthread_db enabled]
[New Thread 47903566773424 (LWP 5065)]
Adding game dir: ./base
using /home/tron/.ufoai/base for writing
Adding game dir: /home/tron/.ufoai/base
execing default.cfg
execing config.cfg
execing keys.cfg
Console initialized.

------- sound initialization -------
Loading snd_sdl sound driver
Soundsystem: SDL.
SDL version: 1.2.9
SDL audio driver is "alsa".
Bits: 16
Frequency: 48000
Samples: 4096
Channels: 2
[New Thread 1082132800 (LWP 5070)]
sound sampling rate: 48000
------- Loading ref_glx.so -------

Program received signal SIG33, Real-time event 33.
[Switching to Thread 1082132800 (LWP 5070)]
0x00002b9169e705c7 in sem_post () from /lib64/libpthread.so.0

================================================

What is the error?
____________________
-Raistlin

Raistlin:
Hi,

i tried it under windows and i had the same problem.
here is the corresponding backtrace.


Building to ensure sources are up-to-date
Build succeeded
Selecting target: default
Adding source dir: C:\Entwicklung\ufoai\src\
Adding source dir: C:\Entwicklung\ufoai\src\
Changing directory to: ../../ufoai
Adding file: ..\ufo.exe
Starting debugger: done
Registered new type: wxString
Registered new type: STL String
Registered new type: STL Vector
Setting breakpoints
Debugger name and version: GNU gdb 5.2.1
Program received signal SIGSEGV, Segmentation fault.
In _libwinmm_a_iname () ()
#0  0x7c911010 in _libwinmm_a_iname ()
No symbol table info available.
#1  0x77c0b90d in _libwinmm_a_iname ()
No symbol table info available.
#2  0x77c120e7 in _libwinmm_a_iname ()
No symbol table info available.
#3  0x003d659b in ?? ()
No symbol table info available.
#4  0x003d65f9 in ?? ()
No symbol table info available.
#5  0x611cecc0 in R_BeginFrame ()
No symbol table info available.
#6  0x00432efe in SCR_UpdateScreen () at client/cl_scrn.c:682
   numframes = 1
   i = 0
   separation = {0, 0}
#7  0x0041d927 in CL_Frame (msec=1) at client/cl_main.c:1604
   extratime = 0
   lasttimecalled = 0
#8  0x004594b9 in Qcommon_Frame (msec=1) at qcommon/common.c:1536
   s = 0x0
   time_before = 0
   time_between = 0
   time_after = 0
#9  0x0044e841 in WinMain (hInstance=0x400000, hPrevInstance=0x0, lpCmdLine=0x241f04 "", nCmdShow=10) at ports/win32/sys_win.c:622
   msg = {hwnd = 0x640380, message = 512, wParam = 0, lParam = 2031856, time = 4545375, pt = {x = 243, y = 60}}
   time = 1
   oldtime = 23389
   newtime = 23390
   timescale = 1
#10 0x00482efa in main ()
No symbol table info available.

________________________
-Raistlin

Bandobras:
You are running SVN trunk, I suppose? Could you revert to somewhat earlier revisions and tell from revision the problem starts? Bisection is your friend...

ubequitz:
It is possible the two errors you are seeing on Windows and Linux are different (I'm not sure). Can you try trunk SVN 3498 under Windows? A change I made to  src/client/cl_menu.c has a (very small) chance of fixing your issue.

Can you also try reproducing your crash under Linux in gdb and get a backtrace?

EDIT: oh I see you already tried getting a bt under Linux :(
very odd behavior crashing at such an early stage...  are you sure your Linux video card drivers are setup ok (generally you have to use the proprietry binary drivers)

Kerner:

--- Code: ---
Program received signal SIG33, Real-time event 33.
[Switching to Thread 1082132800 (LWP 5070)]
0x00002b9169e705c7 in sem_post () from /lib64/libpthread.so.0
================================================
What is the error?
____________________

--- End code ---

This is a position where gdb stops here to(SuSE 10.1),but if i enter "continue" it simply goes on.

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