18 lines
377 B
Rust
18 lines
377 B
Rust
// compile-flags: -Ztrait-solver=next
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// check-pass
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// Test that selection prefers the builtin trait object impl for `Any`
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// instead of the user defined impl. Both impls apply to the trait
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// object.
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use std::any::Any;
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fn needs_usize(_: &usize) {}
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fn main() {
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let x: &dyn Any = &1usize;
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if let Some(x) = x.downcast_ref::<usize>() {
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needs_usize(x);
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}
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}
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