[Dwarf-discuss] Duplicate frames?

[Steve O'Neill]

Well, I've forced myself to have to respond to my own post, sorry.

In looking at the code once again I see that there is no prohibition 
against having both an eh_frame and a debug frame.  I could have sworn 
that this was a problem in the past but I see now that it isn't.

However the multiple debug_frames is still a problem where I could use 
some information...

Thanks again,
Steve

Steve O'Neill wrote:
> Hello,
> 
> I am working on an application which uses libdwarf to extract symbol 
> information from executable images.  A problem that I have seen lately 
> is that when analyzing some images I get a DW_DLE_DEBUG_FRAME_DUPLICATE 
> error message followed by an immediate exit.
> 
> Experimenting with this a bit I've found that for the most part these 
> problem applications contain a .eh_frame as well as a .debug_frame.  In 
> some cases I find an .eh_frame and two .debug_frames.  I've also found 
> through experimentation that, although most likely a Bad Thing, by 
> simply ignoring the error and continuing on I am able to achieve the 
> results that I need.
> 
> Is there anywhere that I can get some background on
> 1) what the eh_frame is and why it can't co-exist with a debug frame?
> 2) how and why am I seeing multiple debug frames?
> 3) is there a linker option that can avoid the multiple frame problem?
> 
> Any information and/or pointers would be appreciated.  Note - I am 
> working with the 20060614 release of libdwarf on an Octane2 running Irix 
> 6.5.23.
> 
> Thanks,
> Steve
> 
> 
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