Support `try_table` in Flatten

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#8,372 9 comments 0 reactions 0 assignees View on GitHub

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Assessment

Difficulty
4/5
Estimated time
3-5 days
Newbie friendliness
48/100
Issue type
Bug
Clarity
Mostly clear
Activity status
Active
Tech stack
wasm
Domain
compilers

Research direction

Start by reproducing the wasm-opt parse failure with a WASM module containing a try_table instruction and --enable-exception-handling enabled; use --debug to compare it with the preceding function and the working throw instruction. Trace the Flatten handling for try_table and verify that wasm-opt can parse and process the module successfully.

Written by the indexing model from the issue text.

Description

Parsing a WASM module using wasm-opt containing a try_table instruction yields the error [parse exception: bad node code 31 (at 0:9801)]. --debug prints the contents of the module up to the end of the function before the one containing the try_table. --enable-exception-handling is on and the throw instruction compiles perfectly fine.
I searched quite a lot but couldn't find any information regarding this, is there any way to get modern exceptions working with wasm-opt?

Dominant language
WebAssembly
Stars
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Forks
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Avg merge
1d 20h
Merged PRs (30d)
64

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