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//@ run-pass
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fn main() {
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struct X;
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trait Foo<T> {
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fn foo(&self) where (T, Option<T>): Ord {} //~ WARN methods `foo` and `bar` are never used
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fn bar(&self, x: &Option<T>) -> bool
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where Option<T>: Ord { *x < *x }
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}
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impl Foo<X> for () {}
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let _ = &() as &dyn Foo<X>;
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}
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