From 698f8c2f01ea549d77d7dc3338a12e04c11057b9 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Wed, 17 Apr 2024 14:02:58 +0200 Subject: Adding upstream version 1.64.0+dfsg1. Signed-off-by: Daniel Baumann --- src/test/ui/objects-coerce-freeze-borrored.rs | 40 +++++++++++++++++++++++++++ 1 file changed, 40 insertions(+) create mode 100644 src/test/ui/objects-coerce-freeze-borrored.rs (limited to 'src/test/ui/objects-coerce-freeze-borrored.rs') diff --git a/src/test/ui/objects-coerce-freeze-borrored.rs b/src/test/ui/objects-coerce-freeze-borrored.rs new file mode 100644 index 000000000..704d77480 --- /dev/null +++ b/src/test/ui/objects-coerce-freeze-borrored.rs @@ -0,0 +1,40 @@ +// run-pass +// Test that we can coerce an `@Object` to an `&Object` + + +trait Foo { + fn foo(&self) -> usize; + fn bar(&mut self) -> usize; +} + +impl Foo for usize { + fn foo(&self) -> usize { + *self + } + + fn bar(&mut self) -> usize { + *self += 1; + *self + } +} + +fn do_it_mut(obj: &mut dyn Foo) { + let x = obj.bar(); + let y = obj.foo(); + assert_eq!(x, y); + + do_it_imm(obj, y); +} + +fn do_it_imm(obj: &dyn Foo, v: usize) { + let y = obj.foo(); + assert_eq!(v, y); +} + +pub fn main() { + let mut x: usize = 22; + let obj = &mut x as &mut dyn Foo; + do_it_mut(obj); + do_it_imm(obj, 23); + do_it_mut(obj); +} -- cgit v1.2.3