[patch] Don't mark 'extern "C" void f(void)' as having extern storage class

[Rafael Espíndola]

So, a problem with this patch is that hasBraces is implemented with
RBraceLoc.isValid(), so it returns the wrong result while we are
parsing it :-(

On 25 April 2013 00:43, Douglas Gregor <dgregor at apple.com> wrote:
> LGTM!
>
> On Apr 21, 2013, at 6:44 AM, Rafael Espíndola <rafael.espindola at gmail.com> wrote:
>
>> This hopefully completes the transition to having "as written"
>> semantics for hasExternalStorage.
>>
>> Cheers,
>> Rafael
>> <t.patch>
>