[cfe-commits] [PATCH] Re: [cfe-dev] Interest in a -Wusing-namespace-in-headers?

[Elliot Glaysher (Chromium)]

On Sat, Mar 19, 2011 at 3:55 PM, Douglas Gregor <dgregor at apple.com> wrote:
> On Mar 19, 2011, at 3:27 AM, Sebastian Redl <sebastian.redl at getdesigned.at> wrote:
>> Do we want to warn about this?
>>
>> extern "C++" {
>>  using namespace foo;
>> }
>>
>> Because the fact that extern blocks are decl contexts has bitten me before, and the above suggestion would fall prey to the same issue.
>
> Good point! Yes, we do want to warn about that.

Is the attached patch sufficient, or are there other cases I should be
checking for?

-- Elliot
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