cfallin opened PR #13603 from cfallin:exceptions-are-now-the-norm to bytecodealliance:main:
Following discussion in the most recent Wasmtime meeting, and following the enablement by default of garbage collection (#13594), we are now ready to ship Wasm exception handling as well. It has been fuzzed for a while now, has good test coverage, has not had a reported bug for quite a while, and in general meets our requirements for tier-1 features. This PR thus promotes it to tier 1 (on all platforms, with the Cranelift compiler backend) and enables it by default.
May exceptions be the norm!
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cfallin requested pchickey for a review on PR #13603.
cfallin requested wasmtime-core-reviewers for a review on PR #13603.
cfallin requested alexcrichton for a review on PR #13603.
cfallin requested wasmtime-default-reviewers for a review on PR #13603.
:thumbs_up: alexcrichton submitted PR review.
alexcrichton has enabled auto merge for PR #13603.
alexcrichton added PR #13603 Wasmtime: enable exception-handling by default. to the merge queue
github-merge-queue[bot] removed PR #13603 Wasmtime: enable exception-handling by default. from the merge queue
cfallin updated PR #13603.
cfallin has enabled auto merge for PR #13603.
cfallin added PR #13603 Wasmtime: enable exception-handling by default. to the merge queue
:check: cfallin merged PR #13603.
cfallin removed PR #13603 Wasmtime: enable exception-handling by default. from the merge queue
Last updated: Jul 29 2026 at 05:03 UTC