diff options
Diffstat (limited to 'src/test/ui/type-alias-impl-trait/not_a_defining_use.rs')
-rw-r--r-- | src/test/ui/type-alias-impl-trait/not_a_defining_use.rs | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/src/test/ui/type-alias-impl-trait/not_a_defining_use.rs b/src/test/ui/type-alias-impl-trait/not_a_defining_use.rs new file mode 100644 index 000000000..fa47d13f5 --- /dev/null +++ b/src/test/ui/type-alias-impl-trait/not_a_defining_use.rs @@ -0,0 +1,36 @@ +#![feature(type_alias_impl_trait)] + +use std::fmt::Debug; + +fn main() {} + +type Two<T, U> = impl Debug; + +fn three<T: Debug, U>(t: T) -> Two<T, U> { + (t, 5i8) + //~^ ERROR `T` doesn't implement `Debug` +} + +trait Bar { + type Blub: Debug; + const FOO: Self::Blub; +} + +impl Bar for u32 { + type Blub = i32; + const FOO: i32 = 42; +} + +fn four<T: Debug, U: Bar>(t: T) -> Two<T, U> { + (t, <U as Bar>::FOO) + //~^ ERROR `U: Bar` is not satisfied + //~| ERROR `T` doesn't implement `Debug` +} + +fn is_sync<T: Sync>() {} + +fn asdfl() { + //FIXME(oli-obk): these currently cause cycle errors + //is_sync::<Two<i32, u32>>(); + //is_sync::<Two<i32, *const i32>>(); +} |