WebAssembly / WebAssembly/spec
[spectec] Wasm 1.0: `$instantiate` missing premises
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Description
The Wasm 1.0 Specification PDF section 4.5.4 has the following three checks for $instantiate:
⊢ module : externtype_imⁿ → externtype_ex*
(S ⊢ externval : externtype)ⁿ
(⊢ externtype ≤ externtype_im)ⁿ
They are missing in Wasm 1.0 SpecTec.
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
Compare Wasm 1.0 Specification PDF section 4.5.4 with the SpecTec definition of $instantiate; the issue identifies three omitted premises. Trace the $instantiate entry point in SpecTec and represent all three checks, then verify that the formalization matches the PDF rule.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- wasm
- Domain
- compilers
- Issue type
- Bug
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Active
- Clarity
- Mostly clear
- Newbie friendliness
- 68/100