[Bug c++/37972] static variables of template class not emitted if no initializer given

[rguenth at gcc dot gnu dot org]

------- Comment #3 from rguenth at gcc dot gnu dot org  2008-10-31 11:36 -------
Because you instantiate Base<int> which is not a specialization yet.  Then
you define foo for a specialization which is not instantiated.  You want

template <typename T>
int Base<T>::foo;


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37972