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21 lines
351 B
Rust
21 lines
351 B
Rust
#![feature(min_specialization)]
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#![feature(const_trait_impl)]
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trait From<T> {
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fn from(t: T) -> Self;
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}
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impl<T> From<T> for T {
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fn from(t: T) -> T { t }
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}
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struct S;
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impl From<S> for S {
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fn from(s: S) -> S { //~ ERROR `from` specializes an item from a parent `impl`, but that item is not marked `default`
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s
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}
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}
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fn main() {}
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