Fix generated bindings for list-of-borrows #670
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This commit fixes an issue for imported functions taking `list<borrow<T>>` arguments. Previously they were erroneously passed through as lists-of-pointers and now they're correctly mapped to list-of-handle-indexes in the ABI. This required rejiggering a bit how types are generated and what's considered owned when, namely requiring that all own handles use `Vec<T>` at the boundary since they need to take ownership.
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I'll note that testing-wise the existing codegen tests cover a good deal, and otherwise tests for resources are not present at the moment as this requires wasmtime support which is still nascent. |
sunfishcode
reviewed
Sep 18, 2023
sunfishcode
approved these changes
Sep 18, 2023
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I tested this by copying the bindings generated with this patch into bytecodealliance/wasmtime#7029 and it fixes the bug I was seeing. |
sunfishcode
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to sunfishcode/wit-abi-up-to-date
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Sep 29, 2023
In particular, this has bytecodealliance/wit-bindgen#670, which fixes a bug hit by `poll-list`.
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This commit fixes an issue for imported functions taking
list<borrow<T>>arguments. Previously they were erroneously passed through as lists-of-pointers and now they're correctly mapped to list-of-handle-indexes in the ABI. This required rejiggering a bit how types are generated and what's considered owned when, namely requiring that all own handles useVec<T>at the boundary since they need to take ownership.