4 // A stable alternative to https://doc.rust-lang.org/stable/std/primitive.never.html
5 enum Never {}  enum
8     never: Never,  field
44         match self.never {}  in flush()
48         match self.never {}  in flush_async()
52         match self.never {}  in make_read_only()
56         match self.never {}  in make_exec()
60         match self.never {}  in make_mut()
65         match self.never {}  in ptr()
70         match self.never {}  in mut_ptr()
75         match self.never {}  in len()