[release/7.0] Fix regression when serializing untyped polymorphic root-level custom converters. #77388
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… converters. Fix #77173.
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Tagging subscribers to this area: @dotnet/area-system-text-json, @gregsdennis Issue DetailsBackport of #77186 to release/7.0 /cc @eiriktsarpalis Customer ImpactTestingRiskIMPORTANT: Is this backport for a servicing release? If so and this change touches code that ships in a NuGet package, please make certain that you have added any necessary package authoring and gotten it explicitly reviewed.
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eiriktsarpalis
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Initial change LGTM.
Packaging diff looks correct. cc @carlossanlop
rbhanda
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I think this could be merged now? |
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The branch is open for changes now that we merged the branding PR. OOB package authoring changes look good. Congrats on being the first OOB servicing package we merge for 7.0.1 😄 . Approved by Tactics. Signed off by area owner. CI is green. Ready to merge. |
ghost
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Backport of #77186 to release/7.0
/cc @eiriktsarpalis
Customer Impact
Fixes a user reported regression from .NET 6 which impacts support for custom polymorphic converters when used in specific contexts (root-level untyped serialization).
Testing
Added regression testing covering the particular regression and other similar cases.
Risk
Low. Product code reinstates a change that was made in the context of a wider refactoring.