6 pub struct Cfg<'a> {  struct
236 pub static mut CFG: Cfg = Cfg {
244 impl<'a> Debug for Cfg<'a> {  implementation
264 pub use self::r#impl::Cfg::CFG;
319         static CONST_DEREFS: RefCell<Map<Handle, Box<super::Cfg<'static>>>> = RefCell::default();
323     struct Handle(*const Cfg<'static>);
325     impl<'a> Cfg<'a> {  implementation
326         fn current() -> super::Cfg<'a> {  in current()
332             super::Cfg {  in current()
341         const fn handle(self: &Cfg<'a>) -> Handle {  in handle()
342             Handle(<*const Cfg>::cast(self))  in handle()  constant
348     pub enum Cfg<'a> {  enum
349         Mut(super::Cfg<'a>),
353     impl<'a> Debug for Cfg<'a> {  implementation
355             if let Cfg::Mut(cfg) = self {  in fmt()
358                 Debug::fmt(&Cfg::current(), formatter)  in fmt()
363     impl<'a> Deref for Cfg<'a> {  implementation
364         type Target = super::Cfg<'a>;
367             if let Cfg::Mut(cfg) = self {  in deref()
370                 let cfg = CONST_DEREFS.with(|derefs| -> *mut super::Cfg {  in deref()
374                         .or_insert_with(|| Box::new(Cfg::current()))  in deref()
381     impl<'a> DerefMut for Cfg<'a> {  implementation
383             if let Cfg::CFG = self {  in deref_mut()
385                 *self = Cfg::Mut(Cfg::current());  in deref_mut()
388                 Cfg::Mut(cfg) => cfg,  in deref_mut()
389                 Cfg::CFG => unreachable!(),  in deref_mut()
394     impl<'a> Drop for Cfg<'a> {  implementation
396             if let Cfg::Mut(cfg) = self {  in drop()