Access to a private member - Rebuild of the Debian archive with clang

"Access to a private member" build failure(s)
clang 11.0.0

This code is accepted by g++ but refused by clang.
gcc bug #52373 has been reported, which is a duplicate of the bug #41437.

class A
{
    struct st
    {
        static void f();
    };
};

template <typename t> void foo()
{
    A::st::f();
}

Versions: 2.9 - 3.0 - 3.1 - 3.2 - 3.3 - 3.4 - 3.4.2 - 3.5.0 - 3.6.0 - 3.8.1 - 3.9.1 - 4.0.1 - 5.0 - 6.0 - 8.0.1 - 9.0.1 - 10.0.0 - 11.0.0 - 12.0.1 - 13.0.0

Package	Version	Supposed error message	Full log	Bug report
openfoam	1906.191111+dfsg1-2	lnInclude/IListStream.H:161:13: error: 'List' is a private member of 'Foam::List'	Log

1 errors

Debian Package rebuild