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37 lines
866 B
Rust
37 lines
866 B
Rust
use std::mem;
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struct Misc<T:?Sized>(T);
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fn check<T: Iterator, U: ?Sized>() {
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// suggest a where-clause, if needed
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mem::size_of::<U>();
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//~^ ERROR the size for values of type
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mem::size_of::<Misc<U>>();
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//~^ ERROR the size for values of type
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// ... even if T occurs as a type parameter
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<u64 as From<T>>::from;
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//~^ ERROR `u64: From<T>` is not satisfied
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<u64 as From<<T as Iterator>::Item>>::from;
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//~^ ERROR `u64: From<<T as Iterator>::Item>` is not satisfied
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// ... but not if there are inference variables
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<Misc<_> as From<T>>::from;
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//~^ ERROR `Misc<_>: From<T>` is not satisfied
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// ... and also not if the error is not related to the type
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mem::size_of::<[T]>();
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//~^ ERROR the size for values of type
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mem::size_of::<[&U]>();
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//~^ ERROR the size for values of type
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}
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fn main() {
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}
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