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| author | Kivooeo <Kivooeo123@gmail.com> | 2025-07-01 00:41:51 +0500 |
|---|---|---|
| committer | Kivooeo <Kivooeo123@gmail.com> | 2025-07-05 00:39:50 +0500 |
| commit | 9ad98f78d4485f6f7f9615c1961bb75b281bfceb (patch) | |
| tree | daadbde2637ad72e2b6a55e61b2870110c55c16e /tests/ui/nullable-pointer-iotareduction.rs | |
| parent | 5ca574e85b67cec0a6fc3fddfe398cbe676c9c69 (diff) | |
| download | rust-9ad98f78d4485f6f7f9615c1961bb75b281bfceb.tar.gz rust-9ad98f78d4485f6f7f9615c1961bb75b281bfceb.zip | |
moved tests
Diffstat (limited to 'tests/ui/nullable-pointer-iotareduction.rs')
| -rw-r--r-- | tests/ui/nullable-pointer-iotareduction.rs | 73 |
1 files changed, 0 insertions, 73 deletions
diff --git a/tests/ui/nullable-pointer-iotareduction.rs b/tests/ui/nullable-pointer-iotareduction.rs deleted file mode 100644 index 1b73164c9fc..00000000000 --- a/tests/ui/nullable-pointer-iotareduction.rs +++ /dev/null @@ -1,73 +0,0 @@ -//@ run-pass - -// Iota-reduction is a rule in the Calculus of (Co-)Inductive Constructions, -// which "says that a destructor applied to an object built from a constructor -// behaves as expected". -- https://coq.inria.fr/doc/language/core/conversion.html#iota-reduction -// -// It's a little more complicated here, because of pointers and regions and -// trying to get assert failure messages that at least identify which case -// failed. - -#![allow(unpredictable_function_pointer_comparisons)] - -enum E<T> { Thing(isize, T), #[allow(dead_code)] Nothing((), ((), ()), [i8; 0]) } -impl<T> E<T> { - fn is_none(&self) -> bool { - match *self { - E::Thing(..) => false, - E::Nothing(..) => true - } - } - fn get_ref(&self) -> (isize, &T) { - match *self { - E::Nothing(..) => panic!("E::get_ref(Nothing::<{}>)", stringify!(T)), - E::Thing(x, ref y) => (x, y) - } - } -} - -macro_rules! check_option { - ($e:expr, $T:ty) => {{ - check_option!($e, $T, |ptr| assert_eq!(*ptr, $e)); - }}; - ($e:expr, $T:ty, |$v:ident| $chk:expr) => {{ - assert!(None::<$T>.is_none()); - let e = $e; - let s_ = Some::<$T>(e); - let $v = s_.as_ref().unwrap(); - $chk - }} -} - -macro_rules! check_fancy { - ($e:expr, $T:ty) => {{ - check_fancy!($e, $T, |ptr| assert_eq!(*ptr, $e)); - }}; - ($e:expr, $T:ty, |$v:ident| $chk:expr) => {{ - assert!(E::Nothing::<$T>((), ((), ()), [23; 0]).is_none()); - let e = $e; - let t_ = E::Thing::<$T>(23, e); - match t_.get_ref() { - (23, $v) => { $chk } - _ => panic!("Thing::<{}>(23, {}).get_ref() != (23, _)", - stringify!($T), stringify!($e)) - } - }} -} - -macro_rules! check_type { - ($($a:tt)*) => {{ - check_option!($($a)*); - check_fancy!($($a)*); - }} -} - -pub fn main() { - check_type!(&17, &isize); - check_type!(Box::new(18), Box<isize>); - check_type!("foo".to_string(), String); - check_type!(vec![20, 22], Vec<isize>); - check_type!(main, fn(), |pthing| { - assert_eq!(main as fn(), *pthing as fn()) - }); -} |
