[Bug c++/77388] Reference to a packed structure member

[andre.simoesdiasvieira at arm dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77388

--- Comment #5 from Andre Vieira <andre.simoesdiasvieira at arm dot com> ---
I see, thank you! 

Oh and leaving out the const yields an error:
t.cpp:28:16: error: cannot bind packed field '((B*)this)->B::s->test_struct::c'
to 'short int&'
   return A (s->c);