[lldb-dev] DWARF v5 unit headers

[Tamas Berghammer via lldb-dev]

As far as I know the only dwarf v5 functionality currently implemented in
LLDB is the split dwarf support so I don't expect it to work with the new
dwarf v5 data but as long as clang emits dwarf v4 (or older) by default it
shouldn't cause any immediate problem with the test suite (we will still
have to teach LLDB to handle dwarf v5).

For the future changes, when you start to emit the new dwarf v5 tag and
form values instead of the current GNU extension tag and form values for
split dwarf and for the related new data form-s we will have to teach LLDB
to understand them (currently we expect only the GNU versions) so a heads
up for that change would be appreciated. Other then this I expect no issue
regarding the addition of dwarf v5 support for LLDB.

Tamas

On Tue, Feb 28, 2017 at 5:25 AM Robinson, Paul via lldb-dev <
lldb-dev at lists.llvm.org> wrote:

> I'm planning to commit a patch (http://reviews.llvm.org/D30206) which will
> cause Clang/LLVM to emit correct unit headers if you ask for version 5.
> I've run the lldb tests and I *think* I pointed to my modified Clang
> correctly (cmake with -DLLDB_TEST_COMPILER=/my/clang) and AFAICT it does
> not introduce new problems.
> I saw 3 Failure and 12 Error with or without the patch.
> (One Expected Failure seems to have become an Unexpected Success. Haven't
> tried to decipher logs to figure out which one yet.)
>
> If anybody can predict a problem with my patch, please let me know by
> noon Pacific time (2000 GMT) tomorrow (28th).
>
> We're going to be doing more work implementing various bits of DWARF v5
> in the coming months.  If anybody thinks they can predict that there are
> particular bits that would be especially problematic for LLDB, it would
> be useful to know up front which bits those are.
>
> Thanks
> --paulr
>
> _______________________________________________
> lldb-dev mailing list
> lldb-dev at lists.llvm.org
> http://lists.llvm.org/cgi-bin/mailman/listinfo/lldb-dev
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.llvm.org/pipermail/lldb-dev/attachments/20170228/6af22a95/attachment.html>