[lldb-dev] Support for Error Strings in remote protocol

[Stephane Sezer via lldb-dev]

True, but the error strings would be only available with lldb-server as
well. Keeping a common table of error numbers seems like a good solution.

On Wed, Jun 21, 2017 at 4:33 PM Jim Ingham <jingham at apple.com> wrote:

> Because the gdb remote protocol docs explicitly state:
>
> The error response returned for some packets includes a two character
> error number. That number is not well defined.
>
> we don't put much stock in the actual error numbers.
>
> If you can determine that you are talking to lldb-server, then we could
> actually make these meaningful by keeping a common table.  But that would
> only work for lldbserver.
>
> Jim
>
>
> > On Jun 21, 2017, at 4:18 PM, Stephane Sezer via lldb-dev <
> lldb-dev at lists.llvm.org> wrote:
> >
> > What's the specific use case that you're trying to support with error
> messages in the protocol? My initial thought on this is that it's not
> really the debug server's job to generate human-readable error messages and
> that the debugger is better suited to do the job.
> >
> > Can this problem be solved by extending the current integer list used
> for errors?
> >
> > On Wed, Jun 21, 2017 at 8:31 AM Ravitheja Addepally via lldb-dev <
> lldb-dev at lists.llvm.org> wrote:
> > Hello all,
> >        Currently the remote protocol in LLDB does not allow sending
> Error Strings in response to remote packets, it only allows for "ENN"
> format where N is a hex integer. In our current ongoing work, we would like
> to have support for Sending Error Strings from lldb-server. I would like to
> invite any opinions or suggestions in this matter ?
> >
> > A very simple proposal would be to just attach an error string maybe as
> a Name:Value Pair ? like so ->
> >
> > EXX;"Error String"
> >  or
> > EXX;M"Error String"
> >
> > I guess removing EXX would make it incompatible with gdb-server. Also
> adding new packets to query errors might not be desired ?
> >
> >
> > Regards,
> > A Ravi Theja
> >
> >
> > _______________________________________________
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> > lldb-dev at lists.llvm.org
> > http://lists.llvm.org/cgi-bin/mailman/listinfo/lldb-dev
> > --
> > --
> > Stephane Sezer
> > _______________________________________________
> > lldb-dev mailing list
> > lldb-dev at lists.llvm.org
> > http://lists.llvm.org/cgi-bin/mailman/listinfo/lldb-dev
>
> --
-- 
Stephane Sezer
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