mirror of https://github.com/rust-lang/rust
31 lines
728 B
Rust
31 lines
728 B
Rust
//@ run-pass
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#![allow(unused_variables)]
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// This code was creating an ICE in the MIR type checker. The reason
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// is that we are reifying a reference to a function (`foo::<'x>`),
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// which involves extracting its signature, but we were not
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// normalizing the signature afterwards. As a result, we sometimes got
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// errors around the `<u32 as Foo<'x>>::Value`, which can be
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// normalized to `f64`.
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#![allow(dead_code)]
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trait Foo<'x> {
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type Value;
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}
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impl<'x> Foo<'x> for u32 {
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type Value = f64;
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}
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struct Providers<'x> {
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foo: for<'y> fn(x: &'x u32, y: &'y u32) -> <u32 as Foo<'x>>::Value,
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}
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fn foo<'y, 'x: 'x>(x: &'x u32, y: &'y u32) -> <u32 as Foo<'x>>::Value {
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*x as f64
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}
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fn main() {
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Providers { foo };
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}
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