21 lines
493 B
Rust
21 lines
493 B
Rust
//@ run-pass
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// regression test for #147964:
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// constification of these traits resulted in inference errors due to additional where clauses
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use std::borrow::{Cow, Borrow};
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pub fn generic_deref<'a, T: ToOwned<Owned = U>, U>(cow: Cow<'a, T>) {
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let _: &T = &cow;
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}
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pub fn generic_borrow<'a, T: ToOwned<Owned = U>, U>(cow: Cow<'a, T>) {
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let _: &T = cow.borrow();
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}
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pub fn generic_as_ref<'a, T: ToOwned<Owned = U>, U>(cow: Cow<'a, T>) {
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let _: &T = cow.as_ref();
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}
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fn main() {}
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