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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:19:13 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:19:13 +0000 |
commit | 218caa410aa38c29984be31a5229b9fa717560ee (patch) | |
tree | c54bd55eeb6e4c508940a30e94c0032fbd45d677 /tests/ui/overloaded/overloaded-deref.rs | |
parent | Releasing progress-linux version 1.67.1+dfsg1-1~progress7.99u1. (diff) | |
download | rustc-218caa410aa38c29984be31a5229b9fa717560ee.tar.xz rustc-218caa410aa38c29984be31a5229b9fa717560ee.zip |
Merging upstream version 1.68.2+dfsg1.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tests/ui/overloaded/overloaded-deref.rs')
-rw-r--r-- | tests/ui/overloaded/overloaded-deref.rs | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/tests/ui/overloaded/overloaded-deref.rs b/tests/ui/overloaded/overloaded-deref.rs new file mode 100644 index 000000000..73d8232a3 --- /dev/null +++ b/tests/ui/overloaded/overloaded-deref.rs @@ -0,0 +1,43 @@ +// run-pass +use std::cell::RefCell; +use std::rc::Rc; +use std::string::String; + +#[derive(PartialEq, Debug)] +struct Point { + x: isize, + y: isize +} + +pub fn main() { + assert_eq!(*Rc::new(5), 5); + assert_eq!(***Rc::new(Box::new(Box::new(5))), 5); + assert_eq!(*Rc::new(Point {x: 2, y: 4}), Point {x: 2, y: 4}); + + let i = Rc::new(RefCell::new(2)); + let i_value = *(*i).borrow(); + *(*i).borrow_mut() = 5; + assert_eq!((i_value, *(*i).borrow()), (2, 5)); + + let s = Rc::new("foo".to_string()); + assert_eq!(*s, "foo".to_string()); + assert_eq!((*s), "foo"); + + let mut_s = Rc::new(RefCell::new(String::from("foo"))); + (*(*mut_s).borrow_mut()).push_str("bar"); + // assert_eq! would panic here because it stores the LHS and RHS in two locals. + assert_eq!((*(*mut_s).borrow()), "foobar"); + assert_eq!((*(*mut_s).borrow_mut()), "foobar"); + + let p = Rc::new(RefCell::new(Point {x: 1, y: 2})); + (*(*p).borrow_mut()).x = 3; + (*(*p).borrow_mut()).y += 3; + assert_eq!(*(*p).borrow(), Point {x: 3, y: 5}); + + let v = Rc::new(RefCell::new(vec![1, 2, 3])); + (*(*v).borrow_mut())[0] = 3; + (*(*v).borrow_mut())[1] += 3; + assert_eq!(((*(*v).borrow())[0], + (*(*v).borrow())[1], + (*(*v).borrow())[2]), (3, 5, 3)); +} |