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20 lines
654 B
Rust
20 lines
654 B
Rust
//@ revisions: current next
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//@ ignore-compare-mode-next-solver (explicit revisions)
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//@[next] compile-flags: -Znext-solver
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// We should be able to instantiate a binder during trait upcasting.
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// This test could be `check-pass`, but we should make sure that we
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// do so in both trait solvers.
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#![feature(trait_upcasting)]
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#![crate_type = "rlib"]
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trait Supertrait<'a, 'b> {}
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trait Subtrait<'a, 'b>: Supertrait<'a, 'b> {}
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impl<'a> Supertrait<'a, 'a> for () {}
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impl<'a> Subtrait<'a, 'a> for () {}
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fn ok(x: &dyn for<'a, 'b> Subtrait<'a, 'b>) -> &dyn for<'a> Supertrait<'a, 'a> {
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x //~ ERROR mismatched types
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//[current]~^ ERROR mismatched types
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}
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