[release/8.0] Avoid marking property/event attributes multiple times #92153
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NativeAot requires a call to GetCustomAttribute for the attributes to be kept.
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Tagging subscribers to 'linkable-framework': @eerhardt, @vitek-karas, @LakshanF, @sbomer, @joperezr, @marek-safar Issue DetailsBackport of #92094 to release/8.0 /cc @sbomer Customer ImpactTestingRiskIMPORTANT: If this backport is for a servicing release, please verify that:
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@vitek-karas can you please review and sign-off this backport too? @jeffschwMSFT can we get your seal of approval? |
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Backport of #92094 to release/8.0
/cc @sbomer
Customer Impact
Specific patterns of attribute usages on properties or events could result in ILLink crashing (with stack overflow). This was reported by a customer publishing a MAUI iOS app in #92064.
As a side effect, this also fixes a (less impactful) bug where duplicate warnings were being produced: #83581.
Testing
Added test coverage for the pattern that causes recursion, for properties (the reported issue) and events (which can also exhibit the same problem).
Risk
Low risk. The change adds some extra tracking for properties and events, but this approach has been proven because we do something similar for methods/fields and other metadata entities.