[llvm-dev] [cfe-dev] 3.8.1 Release Schedule

Renato Golin via llvm-dev
Sat, 23 Apr 2016 13:18:16 -0000

On 22 April 2016 at 23:33, Martin J. O'Riordan via llvm-dev
<llvm-dev at lists.llvm.org> wrote:
> What fixes are being proposed for 3.8.1 versus 3.8?

The biggest change is possibly not going in fully, so I'm CC'ing
cfe-dev for a clear picture.

This bug https://llvm.org/bugs/show_bug.cgi?id=23529 reported an issue
with the new GCC ABI for C++11 mangling that wasn't implemented in
Clang due to the complete lack of specification and stabilisation on
GCC's side, but many Linux distributions decided nevertheless to
enable it by default. More importantly, some of them were already
released with Clang 3.8 as the only release they'll ever have
(example, Ubuntu LTS), so if we don't back-port the ABI patches to
3.8.x (whatever x), Ubuntu LTS will not have a working Clang until the
next LTS comes along. AFAIK, many patches were accepted and committed
to implement the ABI change, but all of them are for 3.9, which will
hopefully be out in time for the next Ubuntu (October).

So far, to my knowledge, no ABI patch was proposed to 3.8 yet. Because
of the LTS nature of some Linux distros, this would be relevant even
if *after* 3.9.


> I carefully tracked 3.7 to 3.7.1 one changes, but 3.8 came so close on its
heels that it turned out I shipped 3.8 to my customers and not the 3.7.1 patch.

All the patches I've seem were pretty minimal. Worth of a 3.8.1, if
only early enough to not be made redundant by 3.9.

cheers,
--renato