Commits on Oct 15, 2022

1. gcc12's regex header file relies on a std::vector<int> instance, expo… …

   …rt it.
   
   The C++ modules marks the std::vector<int> instantiation as not visible because
   it came from the `regex` header file which we did not explicitly include.
   
   root-project/root@a785402 introduces checks if certain declaration is visible
   in dictionary generation time which was intending to semantically improve the
   coherence by what the user "allowed" (or requested) rootcling to see vs what
   it can see globally. While this model works well it seems to not work for
   template instantiations as they won't be re-instantiated with visible modifier.
   
   This patch works around the current issue seen with libstdc++ 12 but a better
   solution would be to implement a finer grained control over the implicit template
   instatiations when generating a dictionary.
   
   Fixes root-project#11329

   

   vgvassilev committed Oct 15, 2022
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