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[wasm] fail fast if the delegate was collected prematurely #56523

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Jul 30, 2021
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[wasm] fail fast if the delegate was collected prematurely #56523

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6 changes: 6 additions & 0 deletions src/mono/wasm/runtime/binding_support.js
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Original file line number Diff line number Diff line change
Expand Up @@ -892,6 +892,12 @@ var BindingSupportLib = {
// It's possible the managed object corresponding to this JS object was collected,
// in which case we need to make a new one.
if (!result) {

if (typeof js_obj.__mono_delegate_alive__ !== "undefined") {
console.log("The delegate target that is being invoked is no longer available. Please check if it has been prematurely GC'd.");
return null;
}

delete js_obj.__mono_gchandle__;
delete js_obj.is_mono_bridged_obj;
}
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