https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86354
Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |mpolacek at gcc dot gnu.org
--- Comment #1 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
The static_assert can be just
static_assert( (X*) &y != (X*) &z);
It ultimately comes down to symtab_node::equal_address_to, but due to the
extern y and z are interposable so it returns -1.
