Wasmtime GitHub notifications bot (Apr 28 2026 at 19:56): Wasmtime GitHub notifications bot (Apr 28 2026 at 19:56):alexcrichton opened PR #13223 from alexcrichton:remove-fuzz-async to bytecodealliance:main:
This fuzzer was added in #12119 with the hope of being a strong vector of fuzzing the component-model-async implementation. In the interim, however, we've discovered:
- This fuzzer has found no issues.
- Issues like #13196 have happened, but they're bugs in
wit-bindgen, not Wasmtime.- Many issues have been discovered which this fuzzer did not uncover.
- This fuzzer takes a long time and special care to run due to needing to compile a large module at startup.
Overall it just doesn't seem like this is pulling its weight. Designing a full fuzzer for component-async work I feel would need to start from scratch. I don't actually know how to build a fuzzer to discover the latent issues we've found via review/testing myself, but I'm hopeful someone in the future can be more clever than I.
Closes #13196
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Wasmtime GitHub notifications bot (Apr 28 2026 at 19:56):alexcrichton requested fitzgen for a review on PR #13223.
Wasmtime GitHub notifications bot (Apr 28 2026 at 19:56):alexcrichton requested wasmtime-fuzz-reviewers for a review on PR #13223.
Wasmtime GitHub notifications bot (Apr 28 2026 at 19:56):alexcrichton requested wasmtime-core-reviewers for a review on PR #13223.
Wasmtime GitHub notifications bot (Apr 28 2026 at 19:56):alexcrichton requested wasmtime-default-reviewers for a review on PR #13223.
Wasmtime GitHub notifications bot (Apr 28 2026 at 19:59)::thumbs_up: pchickey submitted PR review.
Wasmtime GitHub notifications bot (Apr 28 2026 at 20:05):alexcrichton has enabled auto merge for PR #13223.
Wasmtime GitHub notifications bot (Apr 28 2026 at 20:09):alexcrichton added PR #13223 Delete the component-async fuzzer to the merge queue.
Wasmtime GitHub notifications bot (Apr 28 2026 at 20:35)::check: alexcrichton merged PR #13223.
Wasmtime GitHub notifications bot (Apr 28 2026 at 20:35):alexcrichton removed PR #13223 Delete the component-async fuzzer from the merge queue.
Last updated: May 03 2026 at 22:13 UTC