What's the deal with __thread?

[Sean Kelly]

On Nov 14, 2012, at 6:26 AM, Don Clugston <dac at nospam.com> wrote:

> IIRC it was used prior to 2.030. In the spec, it is in the keyword list, and it's also listed in the "Migrating to shared" article. That's all. There are a small number of uses of it in the DMD test suite.
> 
> Is it still valid? Is it useful? Or has everyone forgotten that it still exists?

I think __thread was for explicit TLS before TLS became the default.  I don't see a continued use for it.