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Rollup merge of #96329 - aliemjay:fixed-by-90887, r=jackh726
Add a couple tests for #90887 fixes closes #56556 closes #90875 These are confirmed fixes by #90887, so r? ``@jackh726``
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31 changes: 31 additions & 0 deletions
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src/test/ui/higher-rank-trait-bounds/normalize-under-binder/issue-90875.rs
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// check-pass | ||
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trait Variable<'a> { | ||
type Type; | ||
} | ||
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impl Variable<'_> for () { | ||
type Type = (); | ||
} | ||
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fn check<F, T>(_: F) | ||
where | ||
F: Fn(T), // <- if removed, all fn_* then require type annotations | ||
F: for<'a> Fn(<T as Variable<'a>>::Type), | ||
T: for<'a> Variable<'a>, | ||
{ | ||
} | ||
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fn test(arg: impl Fn(())) { | ||
fn fn_1(_: ()) {} | ||
let fn_2 = |_: ()| (); | ||
let fn_3 = |a| fn_1(a); | ||
let fn_4 = arg; | ||
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check(fn_1); // Error | ||
check(fn_2); // Ok | ||
check(fn_3); // Ok | ||
check(fn_4); // Error | ||
} | ||
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fn main() {} |