diff options
Diffstat (limited to 'tests/ui/traits/inductive-overflow/supertrait.rs')
-rw-r--r-- | tests/ui/traits/inductive-overflow/supertrait.rs | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/tests/ui/traits/inductive-overflow/supertrait.rs b/tests/ui/traits/inductive-overflow/supertrait.rs new file mode 100644 index 000000000..c7aa4d90f --- /dev/null +++ b/tests/ui/traits/inductive-overflow/supertrait.rs @@ -0,0 +1,15 @@ +// Regression test for #29859, supertrait version. This example +// allowed arbitrary trait bounds to be synthesized. + +trait Magic: Copy {} +impl<T: Magic> Magic for T {} + +fn copy<T: Magic>(x: T) -> (T, T) { (x, x) } + +#[derive(Debug)] +struct NoClone; + +fn main() { + let (a, b) = copy(NoClone); //~ ERROR E0275 + println!("{:?} {:?}", a, b); +} |