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https://github.com/rust-lang/rust
synced 2024-10-01 06:14:33 +00:00
29 lines
1 KiB
Rust
29 lines
1 KiB
Rust
struct S1<T>(T) where (T): ?Sized;
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//~^ ERROR `?Trait` bounds are only permitted at the point where a type parameter is declared
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struct S2<T>(T) where u8: ?Sized;
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//~^ ERROR `?Trait` bounds are only permitted at the point where a type parameter is declared
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struct S3<T>(T) where &'static T: ?Sized;
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//~^ ERROR `?Trait` bounds are only permitted at the point where a type parameter is declared
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trait Trait<'a> {}
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struct S4<T>(T) where for<'a> T: ?Trait<'a>;
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//~^ ERROR `?Trait` bounds are only permitted at the point where a type parameter is declared
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//~| WARN relaxing a default bound only does something for `?Sized`
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struct S5<T>(*const T) where T: ?Trait<'static> + ?Sized;
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//~^ ERROR type parameter has more than one relaxed default bound
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//~| WARN relaxing a default bound only does something for `?Sized`
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impl<T> S1<T> {
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fn f() where T: ?Sized {}
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//~^ ERROR `?Trait` bounds are only permitted at the point where a type parameter is declared
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}
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fn main() {
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let u = vec![1, 2, 3];
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let _s: S5<[u8]> = S5(&u[..]); // OK
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}
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