[Bug c++/95428] ABI breakage for "base object constructor" for final classes

[P at draigBrady dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95428

--- Comment #2 from Pádraig Brady <P at draigBrady dot com> ---
The test case is in bug #70462.
Copying here...

g++ -std=c++11 -c -o t.o -x c++ - << EOF
struct Bar final
{
    Bar();
};
Bar::Bar()
{}
EOF

$ nm t.o | grep C2 || echo ABI issue