22 lines
567 B
Rust
22 lines
567 B
Rust
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//! Check that we don't break orphan rules.
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//! The dependency may add an impl for `u8` later,
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//! which would break this crate. We want to avoid adding
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//! more ways in which adding an impl can be a breaking change.
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//! This test differs from `trivial_impl3` because there actually
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//! exists any impl for `Trait`, which has an effect on coherence.
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//@ aux-build:trivial4.rs
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extern crate trivial4;
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pub trait Foo {
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fn foo()
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where
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Self: trivial4::Trait;
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}
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impl Foo for u8 {}
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//~^ ERROR not all trait items implemented, missing: `foo`
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fn main() {}
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