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Diffstat (limited to '')
-rw-r--r-- | src/test/ui/feature-gates/feature-gate-unsafe_pin_internals.rs | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/src/test/ui/feature-gates/feature-gate-unsafe_pin_internals.rs b/src/test/ui/feature-gates/feature-gate-unsafe_pin_internals.rs new file mode 100644 index 000000000..0680d2344 --- /dev/null +++ b/src/test/ui/feature-gates/feature-gate-unsafe_pin_internals.rs @@ -0,0 +1,17 @@ +// edition:2018 +#![forbid(incomplete_features, unsafe_code)] +#![feature(unsafe_pin_internals)] +//~^ ERROR the feature `unsafe_pin_internals` is incomplete and may not be safe to use + +use core::{marker::PhantomPinned, pin::Pin}; + +/// The `unsafe_pin_internals` is indeed unsound. +fn non_unsafe_pin_new_unchecked<T>(pointer: &mut T) -> Pin<&mut T> { + Pin { pointer } +} + +fn main() { + let mut self_referential = PhantomPinned; + let _: Pin<&mut PhantomPinned> = non_unsafe_pin_new_unchecked(&mut self_referential); + core::mem::forget(self_referential); // move and disable drop glue! +} |