mirror of https://github.com/rust-lang/rust
28 lines
812 B
Rust
28 lines
812 B
Rust
// Regression test for #117151, this used to hang the compiler
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pub type ISO<A: 'static, B: 'static> = (Box<dyn Fn(A) -> B>, Box<dyn Fn(B) -> A>);
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pub fn iso<A: 'static, B: 'static, F1, F2>(a: F1, b: F2) -> ISO<A, B>
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where
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F1: 'static + Fn(A) -> B,
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F2: 'static + Fn(B) -> A,
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{
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(Box::new(a), Box::new(b))
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}
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pub fn iso_un_option<A: 'static, B: 'static>(i: ISO<Option<A>, Option<B>>) -> ISO<A, B> {
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let (ab, ba) = (i.ab, i.ba);
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//~^ ERROR no field `ab` on type
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//~| ERROR no field `ba` on type
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let left = move |o_a| match o_a {
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//~^ ERROR overflow assigning `_` to `Option<_>`
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None => panic!("absurd"),
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Some(a) => a,
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};
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let right = move |o_b| match o_b {
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None => panic!("absurd"),
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Some(b) => b,
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};
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iso(left, right)
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}
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fn main() {}
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