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Diffstat (limited to '')
-rw-r--r-- | src/test/ui/issues/issue-67039-unsound-pin-partialeq.rs | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/src/test/ui/issues/issue-67039-unsound-pin-partialeq.rs b/src/test/ui/issues/issue-67039-unsound-pin-partialeq.rs new file mode 100644 index 000000000..a496e58a7 --- /dev/null +++ b/src/test/ui/issues/issue-67039-unsound-pin-partialeq.rs @@ -0,0 +1,27 @@ +// Pin's PartialEq implementation allowed to access the pointer allowing for +// unsoundness by using Rc::get_mut to move value within Rc. +// See https://internals.rust-lang.org/t/unsoundness-in-pin/11311/73 for more details. + +use std::ops::Deref; +use std::pin::Pin; +use std::rc::Rc; + +struct Apple; + +impl Deref for Apple { + type Target = Apple; + fn deref(&self) -> &Apple { + &Apple + } +} + +impl PartialEq<Rc<Apple>> for Apple { + fn eq(&self, _rc: &Rc<Apple>) -> bool { + unreachable!() + } +} + +fn main() { + let _ = Pin::new(Apple) == Rc::pin(Apple); + //~^ ERROR type mismatch resolving +} |