Wasmtime GitHub notifications bot (Oct 19 2026 at 15:46): Wasmtime GitHub notifications bot (Oct 19 2026 at 15:46):alexcrichton opened issue #14812:
Right now the semantics of
map<K, V>mean that if duplicate keys are supplied then the last-specified key is the one present in the map. This is generally fine but this means that Wasmtime does not provide embedders the means to correctly operate with maps-of-handles because the embedder can't ever properly deallocate the handles it was given. For example if the host is given twoownhandles it'll only actually receive one of them, meaning the other effectively leaks.
Wasmtime GitHub notifications bot (Oct 19 2026 at 15:46):alexcrichton added the wasm-proposal:component-model-map label to Issue #14812.
Wasmtime GitHub notifications bot (Oct 22 2026 at 16:29):alexcrichton commented on issue #14812:
I've created an upstream issue to possibly close this by making
map<K, V>with handles an invalid component.
Last updated: Oct 31 2026 at 23:03 UTC