mirror of https://github.com/rust-lang/rust
20 lines
515 B
Rust
20 lines
515 B
Rust
// Test that two distinct impls which match subtypes of one another
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// yield coherence errors (or not) depending on the variance.
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//
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// Note: This scenario is currently accepted, but as part of the
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// universe transition (#56105) may eventually become an error.
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struct Foo<T> {
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t: T,
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}
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impl Foo<for<'a, 'b> fn(&'a u8, &'b u8) -> &'a u8> {
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fn method1(&self) {} //~ ERROR duplicate definitions with name `method1`
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}
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impl Foo<for<'a> fn(&'a u8, &'a u8) -> &'a u8> {
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fn method1(&self) {}
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}
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fn main() {}
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