diff options
Diffstat (limited to 'tests/ui/rfc-2632-const-trait-impl/const-drop-fail.rs')
-rw-r--r-- | tests/ui/rfc-2632-const-trait-impl/const-drop-fail.rs | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/tests/ui/rfc-2632-const-trait-impl/const-drop-fail.rs b/tests/ui/rfc-2632-const-trait-impl/const-drop-fail.rs new file mode 100644 index 000000000..d36c7f81c --- /dev/null +++ b/tests/ui/rfc-2632-const-trait-impl/const-drop-fail.rs @@ -0,0 +1,62 @@ +// revisions: stock precise +#![feature(const_trait_impl)] +#![feature(const_mut_refs)] +#![cfg_attr(precise, feature(const_precise_live_drops))] + +use std::marker::{Destruct, PhantomData}; + +struct NonTrivialDrop; + +impl Drop for NonTrivialDrop { + fn drop(&mut self) { + println!("Non trivial drop"); + } +} + +struct ConstImplWithDropGlue(NonTrivialDrop); + +impl const Drop for ConstImplWithDropGlue { + fn drop(&mut self) {} +} + +#[const_trait] +trait A { fn a() { } } + +impl A for NonTrivialDrop {} + +struct ConstDropImplWithBounds<T: ~const A>(PhantomData<T>); + +impl<T: ~const A> const Drop for ConstDropImplWithBounds<T> { + fn drop(&mut self) { + T::a(); + } +} + +const fn check<T: ~const Destruct>(_: T) {} + +macro_rules! check_all { + ($($exp:expr),*$(,)?) => {$( + const _: () = check($exp); + )*}; +} + +check_all! { + NonTrivialDrop, + //~^ ERROR can't drop + ConstImplWithDropGlue(NonTrivialDrop), + //~^ ERROR can't drop + ConstDropImplWithBounds::<NonTrivialDrop>(PhantomData), + //~^ ERROR the trait bound + //~| ERROR the trait bound +} + +struct ConstDropImplWithNonConstBounds<T: A>(PhantomData<T>); + +impl<T: ~const A> const Drop for ConstDropImplWithNonConstBounds<T> { +//~^ ERROR `Drop` impl requires `T: ~const A` but the struct it is implemented for does not + fn drop(&mut self) { + T::a(); + } +} + +fn main() {} |