WebAssembly / WebAssembly/wabt
table.get index truncation for table64
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- Dominant language
- C++
- Stars
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- Forks
- 827
- Avg merge
- 4d 6h
- Merged PRs (30d)
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Description
Build
Build wasm-interp in debug mode
Command
./wasm-interp --enable-memory64 poc.wasm --run-all-exports
Observed result
i32:1 (no trap)
Expected behavior
Trap because index >= table.size
Environment
- wabt 1.0.39
- OS: Linux x86_64 Ubuntu
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Build wasm-interp in debug mode and reproduce the issue with the attached poc.wasm using --enable-memory64 and --run-all-exports. Trace the table.get handling for the table64 index; done means the same case traps because the index is greater than or equal to table.size.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- cpp, wasm
- Domain
- compilers, devtools
- Issue type
- Bug
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Quiet
- Clarity
- Mostly clear
- Newbie friendliness
- 62/100