44 lines
685 B
Rust
44 lines
685 B
Rust
//@ compile-flags: -Znext-solver=coherence
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//@ check-pass
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// A regression test for #124791. Computing ambiguity causes
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// for the overlap of the `ToString` impls caused an ICE.
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#![crate_type = "lib"]
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#![feature(min_specialization)]
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trait Display {}
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trait ToOwned {
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type Owned;
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}
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impl<T> ToOwned for T {
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type Owned = T;
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}
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struct Cow<B: ?Sized>(B);
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impl<B: ?Sized> Display for Cow<B>
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where
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B: ToOwned,
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B::Owned: Display,
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{
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}
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impl Display for () {}
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trait ToString {
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fn to_string();
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}
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impl<T: Display + ?Sized> ToString for T {
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default fn to_string() {}
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}
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impl ToString for Cow<str> {
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fn to_string() {}
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}
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impl ToOwned for str {
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type Owned = ();
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}
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