[Bug c++/84497] link errors with trivial external thread_local variables

[nathan at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84497

Nathan Sidwell <nathan at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|---                         |FIXED

--- Comment #5 from Nathan Sidwell <nathan at gcc dot gnu.org> ---
Fixed r258244.

As the generator side of the compiler isn't changed, this isn't an ABI change. 
Just a fix for illformed code generation.