resolve the function call on an async trait cause a compiler crash #102918
Labels
A-async-await
Area: Async & Await
C-bug
Category: This is a bug.
T-compiler
Relevant to the compiler team, which will review and decide on the PR/issue.
Comments
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@rustbot label +A-async-await +T-compiler |
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In the meanwhile, I will try to swim inside the codebase to catch the problem! @rustbot claim |
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@vincenzopalazzo, this is fixed by #102334. |
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Minimized so it doesn't depend on rio: #![feature(async_fn_in_trait)]
trait AsyncTrait {
async fn foo(&self) -> Result<(), ()>;
}
struct AsyncStruct;
impl AsyncTrait for AsyncStruct {
async fn foo(&self) -> Result<(), ()> {
Ok(())
}
}
async fn run_async_workflow(a: &impl AsyncTrait) -> Result<(), ()> {
a.foo().await
}
fn main() {
let _ = async {
let obj = AsyncStruct;
let _ = run_async_workflow(&obj).await;
};
} |
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Cool @compiler-errors great work :) |
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While working on an experimental runtime rio and using a couple of experimental features I found that the compiler while in resolving the async call on a trait crash badly.
This is a minimal reproducible example
and this is the stacktrace generated
N.B: I guess this happens with any runtime? BTW also if happens only with rio the compiler should not crash, but I do not think this is related to a specific runtime, but I guess instead, the runtime triggers the resolution of the futures
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