typeof() preserves address space information

The following testcase:

--cut here--
#ifdef __CHECKER__
# define __seg_gs        __attribute__((address_space(__seg_gs)))
# define __seg_fs        __attribute__((address_space(__seg_fs)))
#endif

#define __read(var) (*(volatile typeof(var) *)&(var))

extern int __seg_gs m;
int foo (void);

int foo (void)
{
  return __read (m);
}
--cut here--

compiles with GCC (15+) without warnings, but sparse warns:

_.c:13:10: warning: cast removes address space '__seg_gs' of expression

typeof () operator should preserve all qualifiers (const, volatile,
__seg_gs, etc). OTOH, typeof_unqual () operator strips all qualifiers
and returns unqualified type of what typeof () returns. Please see
notes of [1].

[1] https://en.cppreference.com/w/c/language/typeof.html

Uros.