[cfe-dev] Interest in a -Wusing-namespace-in-headers?

[Elliot Glaysher (Chromium)]

Attached is a new version, using Douglas's suggestion for a
-Wheader-hygiene flag, as I intend to add the anonymous namespace
warning next.

On Wed, Mar 16, 2011 at 4:51 PM, Daniel James <dnljms at gmail.com> wrote:
> But it doesn't really matter where it is or isn't used. What matters
> is that a properly scoped import is usually safe, and warning about
> one would be counter productive.

This version only warns in the global context and not warning when a
using declarative is done inside a namespace is covered by the tests.

Regards,

-- Elliot Glaysher
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