diff options
Diffstat (limited to 'tests/ui/traits/next-solver/alias-bound-unsound.rs')
-rw-r--r-- | tests/ui/traits/next-solver/alias-bound-unsound.rs | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/tests/ui/traits/next-solver/alias-bound-unsound.rs b/tests/ui/traits/next-solver/alias-bound-unsound.rs new file mode 100644 index 000000000..4e279a84a --- /dev/null +++ b/tests/ui/traits/next-solver/alias-bound-unsound.rs @@ -0,0 +1,32 @@ +// compile-flags: -Znext-solver + +// Makes sure that alias bounds are not unsound! + +#![feature(trivial_bounds)] + +trait Foo { + type Item: Copy + where + <Self as Foo>::Item: Copy; + + fn copy_me(x: &Self::Item) -> Self::Item { + *x + } +} + +impl Foo for () { + type Item = String where String: Copy; + //~^ ERROR overflow evaluating the requirement `<() as Foo>::Item: Copy` +} + +fn main() { + let x = String::from("hello, world"); + drop(<() as Foo>::copy_me(&x)); + //~^ ERROR overflow evaluating the requirement `<() as Foo>::Item: Sized` + //~| ERROR overflow evaluating the requirement `<() as Foo>::Item == _` + //~| ERROR overflow evaluating the requirement `<() as Foo>::Item well-formed` + //~| ERROR overflow evaluating the requirement `String <: <() as Foo>::Item` + //~| ERROR overflow evaluating the requirement `&<() as Foo>::Item well-formed` + //~| ERROR overflow evaluating the requirement `<() as Foo>::Item normalizes-to _` + println!("{x}"); +} |