Debugging a Vlc dll with GDB.

Hello,
 
 
I am currently using GDB v.6.5.50.20060706. One of my
colleague built an application (VLCTest.exe) by using
Visual Studio C++ 6.0 and used the MFC. His
application uses the libvlc.dll of an open source
application called Vlc. Unfortunately, Vlc has some
bug(s) and we want to find them, correct them and
suggest patches to the maintainers. So, our work will
help the open source community.
 
It tried to put a breakpoint into VLCTest.exe but it
did not work:
 
gdb -silent -e VLCTest.exe -s VLCTest.exe == "no
debugging symbols found"
 
 
Instead of it I can put a breakpoint into libvlc.dll
(let's say function libvlc_new()). I tried but it did
not work:
 
gdb -silent -e VLCTest.exe -s VLCTest.exe == "no
debugging symbols found"
file libvlc.dll          == reading symbols from
libvlc.dll ... done 
break libvlc_new   == breakpoint 1 at bla bla bla
run VLCTest.exe  == error creating process
/cygdrive/c/cygwin/myapp/libvlc.dll
 
 
As you can see my goal is to step into the libvlc.dll.
Can you suggest me a method?
I tought about creating a new project under Eclipse to
build VLCTest.exe but it seems
to be an overkill.
 
 
Best regards,
 
abraxis



     
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On Thu, Dec 06, 2007 at 09:38:10AM -0800, personel personel
wrote:
> I am currently using GDB v.6.5.50.20060706. One of my
> colleague built an application (VLCTest.exe) by using
> Visual Studio C++ 6.0 and used the MFC.

As Dave mentioned, we can not do source level debugging of
MSVC++
compiled applications.

> Instead of it I can put a breakpoint into libvlc.dll
> (let's say function libvlc_new()). I tried but it did
> not work:
>  
> gdb -silent -e VLCTest.exe -s VLCTest.exe == "no
> debugging symbols found"
> file libvlc.dll          == reading symbols from
> libvlc.dll ... done 
> break libvlc_new   == breakpoint 1 at bla bla bla
> run VLCTest.exe  == error creating process
> /cygdrive/c/cygwin/myapp/libvlc.dll

Skip the "file" command.  Say yes when GDB asks if
the breakpoint
should be created pending.

-- 
Daniel Jacobowitz
CodeSourcery