facebook/hhvm — pull request #2321 by Aatch (2014-04-04 03:09:35+00:00)
Title: Allow for anonymous namespaces

Currently Hack doesn't accept this as a valid parse:

```php
namespace foo {
function bar() {}
}

namespace {
function baz() {}
}
```

This patch allows for anonymous namespaces, treated like the global namespace, which are accepted by HHVM.