Stream: git-wasmtime

Topic: wasmtime / issue #13507 Timer regression v44 => v45?

view this post on Zulip Wasmtime GitHub notifications bot (May 29 2026 at 09:48):

ignatz opened issue #13507:

Test Case

Sorry for not offering a trivial repro, my setup is a bit more convoluted :hide:

I'm using wstd to write async WASM code, which hasn't changed lately. However upgrading to v45, my async rust code:

Timer::after(Duration::from_nanos(0)).wait().await;

used to work on v44. Now the continuation never runs. Just waiting for 1 nanosecond instead of 0 fixes the issue.

I suspect this is a regression in wasmtime itself.

Steps to Reproduce

yield for a 0-delay

Expected Results

continuation runs right away or after completing some other tasks firs..., as long as it runs eventually

Actual Results

crickets

Versions and Environment

v45

Operating system: TODO

lunix

view this post on Zulip Wasmtime GitHub notifications bot (May 29 2026 at 09:48):

ignatz added the bug label to Issue #13507.

Last updated: Jun 01 2026 at 09:49 UTC