24 lines
820 B
Rust
24 lines
820 B
Rust
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//@ edition: 2021
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#![feature(async_closure)]
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struct DropMe;
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trait Impossible {}
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fn trait_error<T: Impossible>() {}
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pub fn main() {
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let b = DropMe;
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let async_closure = async move || {
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// Type error here taints the environment. This causes us to fallback all
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// variables to `Error`. This means that when we compute the upvars for the
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// *outer* coroutine-closure, we don't actually see any upvars since `MemCategorization`
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// and `ExprUseVisitor`` will bail early when it sees error. This means
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// that our underlying assumption that the parent and child captures are
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// compatible ends up being broken, previously leading to an ICE.
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trait_error::<()>();
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//~^ ERROR the trait bound `(): Impossible` is not satisfied
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let _b = b;
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};
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}
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