add disallowing start fn as a config option#2
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sappenin
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Jul 10, 2026
| WASMI_CONFIG_PROP(void, ignore_custom_sections, bool) | ||
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| /** | ||
| * \brief Whether or not Wasm modules that declare a `start` function are allowed. |
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What's the motivation behind this config flag? Maybe something like this:
Wasm's start function executes automatically when a module is instantiated, before any explicit entry
point is called. This PR closes a potential execution gap by letting the embedder reject any module that
declares a start function outright, rather than allowing it to run code the instant it's loaded.
- If that's accurate, can you update the PR description?
- Is this something that should be proposed in the upstream project?
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