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13 lines
449 B
Rust
13 lines
449 B
Rust
// Regression test for ICE from issue #140545
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// The error message is confusing and wrong, but that's a different problem (#139350)
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//@ edition:2018
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trait Foo {}
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fn a(x: impl Foo) -> impl Foo {
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if true { x } else { a(a(x)) }
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//~^ ERROR: expected generic type parameter, found `impl Foo` [E0792]
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//~| ERROR: type parameter `impl Foo` is part of concrete type but not used in parameter list for the `impl Trait` type alias
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}
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fn main(){}
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