[release/11.0] Remove open delegate Equals fastpath - #134267
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The fastpath was not correct in face of virtual methods. Fixes #134218.
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This was referenced Sep 19, 2026
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Backport of #134224 to release/11.0
/cc @jkotas @MichalPetryka
Customer Impact
Delegate.Equals returns true instead of false when the delegate targets are two different virtual methods that happen to point to the same slot.
Regression
Regression introduced by delegate performance improvements.
Testing
Regression test
Risk
Low