27 lines
920 B
Rust
27 lines
920 B
Rust
// Test that our leak-check is not smart enough to take implied bounds
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// into account (yet). Here we have two types that look like they
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// should not be equivalent, but because of the rules on implied
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// bounds we ought to know that, in fact, `'a = 'b` must always hold,
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// and hence they are.
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//
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// Rustc can't figure this out and hence it accepts the impls but
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// gives a future-compatibility warning (because we'd like to make
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// this an error someday).
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//
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// Note that while we would like to make this a hard error, we also
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// give the same warning for `coherence-wasm-bindgen.rs`, which ought
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// to be accepted.
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#![deny(coherence_leak_check)]
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trait Trait {}
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impl Trait for for<'a, 'b> fn(&'a &'b u32, &'b &'a u32) -> &'b u32 {}
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impl Trait for for<'c> fn(&'c &'c u32, &'c &'c u32) -> &'c u32 {
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//~^ ERROR conflicting implementations
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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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