Fuzzer: Only run one handler at a time#8643
Merged
kripken merged 1 commit intoWebAssembly:mainfrom Apr 23, 2026
Merged
Conversation
aheejin
approved these changes
Apr 23, 2026
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
2 participants
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
Rather than generate one wasm and run it on a few handlers, each wasm
gets one handler run on it.
This is simpler, in particular during reduction, where only the thing being
reduced is run.
It is a tradeoff in efficiency. Running the old way vs this for 5 minutes, we
generate almost 2x more wasm files per second (good for variety) but
run 34% fewer handlers (bad for coverage). This seems reasonable to
me.
Replaces #8621
Diff without whitespace is smaller.