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Don't create a COM weak reference if the object is an aggregated COMWrappers RCW. #61267

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merged 3 commits into from
Nov 6, 2021

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jkoritzinsky
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@jkoritzinsky jkoritzinsky commented Nov 5, 2021

This prevents us from trying to re-create a managed object that is a user-defined object deriving from an RCW type from a COM IWeakReference (which fails).

The included test crashes on main with an AV and passes with the changes in this PR.

Fixes microsoft/CsWinRT#1025

@AaronRobinsonMSFT
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@jkoritzinsky Let's start the port to .NET 6 ASAP.

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/backport to release/6.0

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github-actions bot commented Nov 6, 2021

Started backporting to release/6.0: https://github.com/dotnet/runtime/actions/runs/1429642390

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Taking a WeakReference to a C# object that inherits a native WinRT object crashes the app.
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