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[Bug gdb/15011] unable to fetch function parameters
- From: "deeprtm3997 at gmail dot com" <sourceware-bugzilla at sourceware dot org>
- To: gdb-prs at sourceware dot org
- Date: Sat, 12 Jan 2013 09:31:16 +0000
- Subject: [Bug gdb/15011] unable to fetch function parameters
- Auto-submitted: auto-generated
- References: <bug-15011-4717@http.sourceware.org/bugzilla/>
http://sourceware.org/bugzilla/show_bug.cgi?id=15011
--- Comment #3 from Deep <deeprtm3997 at gmail dot com> 2013-01-12 09:31:16 UTC ---
(In reply to comment #1)
> From the source it appears that this happens if a DWARF
> location expression requests the CFA for the frame, but the
> frame was found using some other unwinder:
>
> if (!frame_unwinder_is (this_frame, &dwarf2_frame_unwind)
> && !frame_unwinder_is (this_frame, &dwarf2_tailcall_frame_unwind))
> error (_("can't compute CFA for this frame"));
>
> Offhand I am not sure under what circumstances this can happen.
> Maybe if you are somehow hitting the special epilogue frame unwinder.
>
> If the .o file from which 'exec' comes is not too big, maybe
> having it would help.
Well, I am using GDB for the first time(doing an OS course), so I don't know
what is "special epilogue frame unwinder". But I am attaching exec.o, if it
helps.
Thank You.
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