winedbg question

[Jeremy Shaw]

Hello,

I don't have any answer to your question, but I do know "why" wine is crashing. It is indeed crashing inside of jack_activate() in libjack. If you look in that function, the first thing to does is allocate a 1MB array (which it never uses). I am not really sure why they do this -- there is a comment in the file that half explains it. In any case, if you make it a 0.5 meg array, then it should work okay.

Hopefully someone can think of a better solution than modifying the libjack library. I am not really sure why it crashes in the first place.

You will likely find that the current winejack driver is not that reliable. I have fixed a few major bugs in the winejack waveout code, and am about 95% done implementing wave in. I am going on vacation on thursday, so I won't be submitting a formal patch until early next year. If you want a preliminary copy I would be glad to send you a patch. It should be reliable, its just missing stereo input (currently only supports mono) and has some extra debug code, etc.

Jeremy Shaw.


On Dec 16, 2003 7:53 PM, Chris Morgan <cmorgan at alum.wpi.edu> wrote:

> Should winedbg be able to load symbols up for non-wine libraries?  After the  
> export WINELOADER idea I've got wine symbols but I'm still trying to debug a  
> bizzare crash in winejack where I get: 
>  
> ~/c$ wine sndrec32.exe 
> Could not stat /mnt/fd0 (No such file or directory), ignoring drive A: 
> Segmentation fault 
>  
>  
> and when running under winedbg: 
>  
>  
> *** Invalid address 0x40017f40 (_end+0x2ff03f40) 
> Loaded debug information from ELF '/usr/local/lib/wine/ 
> midimap.drv.so' (0x41090000) 
> In 32-bit mode. 
> Wine-dbg>cont 
> Stopped on breakpoint 1 at 0x0100d32e (sndrec32.exe.EntryPoint in  
> sndrec32.exe) 
> Wine-dbg>cont 
> Invalid address for breakpoint 1, disabling it 
> Invalid address for breakpoint 2, disabling it 
> Process of pid=0000000a has terminated 
> Wine-dbg> 
>  
>  
> From single stepping I've found the function where the segfault appears to  
> occur but its inside of jack_activate() in libjack.so.0 but symbols for this  
> library don't appear to be loaded: 
>  
> *** Invalid address 0x40017f40 (_end+0x2ff03f40) 
> No debug information in ELF '/usr/local/lib/libjack.so.0' (0x40f56000) 
> No debug information in ELF '/lib/tls/librt.so.1' (0x40f62000) 
>  
> nm libjack.so.0 lists a bunch of symbols and I'm able to set a breakpoint on  
> jack_activate() using gdb on a native linux app so it looks like debug  
> information is built into libjack.so.0. 
>  
> Thanks, 
> Chris 
>  
>  
>