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21 lines
555 B
Rust
21 lines
555 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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//@ check-pass
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trait TheTrait {
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fn foo(&self) {}
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}
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impl TheTrait for for<'a, 'b> fn(&'a u8, &'b u8) -> &'a u8 {}
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impl TheTrait for for<'a> fn(&'a u8, &'a u8) -> &'a u8 {
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//~^ WARN conflicting implementation
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//~| WARN the behavior may change in a future release
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}
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fn main() {}
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