03878c682a
uses a `ProofTreeVisitor` to look into nested goals when looking at the pending obligations during hir typeck. Used by closure signature inference, coercion, and for async functions.
21 lines
345 B
Rust
21 lines
345 B
Rust
//@ revisions: current next
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//@ ignore-compare-mode-next-solver (explicit revisions)
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//@[next] compile-flags: -Znext-solver
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//@ check-pass
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trait Foo {}
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fn needs_foo<T>(_: T)
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where
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Wrap<T>: Foo,
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{
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}
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struct Wrap<T>(T);
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impl<T> Foo for Wrap<T> where T: for<'a> Fn(&'a i32) {}
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fn main() {
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needs_foo(|x| {
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x.to_string();
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});
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}
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