Add test for rust-lang#114912

[apekros]

Closes #114912

[rustbot]

r? @wesleywiser

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[vincenzopalazzo]

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?

[apekros]

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.

[vincenzopalazzo]

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

[apekros]

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

[vincenzopalazzo]

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 :)

[apekros]

Awesome, thanks mate.

[vincenzopalazzo]

I do no know if I am missing some context here :) so feel free to correct my review if needed 😸

[cjgillot]

@bors r+ rollup

[bors]

📌 Commit e71ee50 has been approved by cjgillot

It is now in the queue for this repository.

[bors]

⌛ Testing commit e71ee50 with merge 9372999...

[bors]

☀️ Test successful - checks-actions
Approved by: cjgillot
Pushing 9372999 to master...

[bors]

☀️ Test successful - checks-actions
Approved by: cjgillot
Pushing 9372999 to master...

[rust-timer]

Finished benchmarking commit (9372999): comparison URL.

Overall result: no relevant changes - no action needed

@rustbot label: -perf-regression

Instruction count

This benchmark run did not return any relevant results for this metric.

Max RSS (memory usage)

Results

This is a less reliable metric that may be of interest but was not used to determine the overall result at the top of this comment.

	mean	range	count
Regressions ❌ (primary)	3.0%	[3.0%, 3.0%]	1
Regressions ❌ (secondary)	3.4%	[3.4%, 3.4%]	1
Improvements ✅ (primary)	-2.4%	[-2.4%, -2.4%]	1
Improvements ✅ (secondary)	-	-	0
All ❌✅ (primary)	0.3%	[-2.4%, 3.0%]	2

Cycles

This benchmark run did not return any relevant results for this metric.

Binary size

This benchmark run did not return any relevant results for this metric.

Bootstrap: 631.246s -> 629.54s (-0.27%)
Artifact size: 304.08 MiB -> 304.12 MiB (0.01%)