Fix weak handling with GCC 3.4+

[Richard Henderson]

On Fri, Jan 03, 2003 at 02:53:53PM -0800, Geoff Keating wrote:
> Another underspecified GCC extension!

No it isn't.

> I would expect that in
> 
> __thread int foo = 0;
> extern __typeof (foo) foo;
> 
> the second declaration would have no effect, just as in
> 
> static int foo = 0;
> extern __typeof (foo) foo;
> 
> because 'extern' is not a storage class specifier.

Please re-read the documentation I wrote for __thread.
It contains rationale for why all declarations of foo
must specify __thread.


r~