r246548 - Add a new frontend warning for referencing members from the handler of a constructor or destructor function-try-block, which is UB in C++.

[Aaron Ballman via cfe-commits]

On Tue, Sep 1, 2015 at 2:10 PM, Renato Golin <renato.golin at linaro.org> wrote:
> On 1 September 2015 at 18:17, Renato Golin <renato.golin at linaro.org> wrote:
>> Ok, I cleared the stage2 build directory, let's see how this build goes...
>>
>> http://lab.llvm.org:8011/builders/clang-cmake-armv7-a15-selfhost-neon/builds/3248
>
> Nah, there is something definitely wrong with that. I'll bisect here
> to make sure it wasn't your patch.
>
> For now, the other buildbots should cover for the other breakages, so
> we can keep this one failing until we're sure of it.

I just got a notice for a similar failure:
http://lab.llvm.org:8011/builders/clang-cmake-thumbv7-a15-full-sh/builds/2130

Could this be some ARM-specific issue?

What's really weird is, the only practical change in this was to
Sema::BuildMemberReferenceExpr() to issue a warning diagnostic (and
not early return, continue as-normal). The rest of the changes were to
thread Scope * from the parser into Sema to accommodate. Very strange.

~Aaron