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Add test for rust-lang#114912 #116256

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Oct 22, 2023
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Add test for rust-lang#114912 #116256

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10 changes: 10 additions & 0 deletions tests/ui/async-await/debug-ice-attempted-to-add-with-overflow.rs
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// check-fail
// edition:2021

// test for issue-114912 - debug ice: attempted to add with overflow

async fn main() {
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Suggested change
async fn main() {
fn main() {

We do not support async main so we can remote it? of there is any reason that I am missing to add it?

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I was just following the issue, which I presume wanted to be tested for with the async/await if not the await itself would have to removed too.

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Ah I see, ok it is fine for me.

another way to write the same thing is

fn main() {
   let _ = async { 
      [0usize; 0xffff_ffff_ffff_ffff].await;
   };
}

In this way, you have no longer the problem of the async fn main

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Would you prefer it this way, or okay with how it is now? Thanks for the tip :)

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Would you prefer it this way, or okay with how it is now? Thanks for the tip :)

for me, it is fine either way, with the second way you avoid just to generate a second error

error[E0752]: main function is not allowed to be async

but maybe a t-compiler member will have some preference, for me there is no problem :)

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Awesome, thanks mate.

//~^ ERROR `main` function is not allowed to be `async`
[0usize; 0xffff_ffff_ffff_ffff].await;
//~^ ERROR `[usize; usize::MAX]` is not a future
}
23 changes: 23 additions & 0 deletions tests/ui/async-await/debug-ice-attempted-to-add-with-overflow.stderr
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error[E0277]: `[usize; usize::MAX]` is not a future
--> $DIR/debug-ice-attempted-to-add-with-overflow.rs:8:37
|
LL | [0usize; 0xffff_ffff_ffff_ffff].await;
| -^^^^^
| ||
| |`[usize; usize::MAX]` is not a future
| help: remove the `.await`
|
= help: the trait `Future` is not implemented for `[usize; usize::MAX]`
= note: [usize; usize::MAX] must be a future or must implement `IntoFuture` to be awaited
= note: required for `[usize; usize::MAX]` to implement `IntoFuture`

error[E0752]: `main` function is not allowed to be `async`
--> $DIR/debug-ice-attempted-to-add-with-overflow.rs:6:1
|
LL | async fn main() {
| ^^^^^^^^^^^^^^^ `main` function is not allowed to be `async`

error: aborting due to 2 previous errors

Some errors have detailed explanations: E0277, E0752.
For more information about an error, try `rustc --explain E0277`.
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