Fix JsonIgnore behavior on init-only properties in source generation mode #112924
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…n serializer source generator
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This was referenced Feb 26, 2025
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| @@ -132,5 +155,28 @@ public class Class_PropertyWith_ProtectedInitOnlySetter_WithAttribute | |||
| [JsonInclude] | |||
| public int MyInt { get; protected init; } | |||
| } | |||
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| public class Class_WithIgnoredInitOnlyProperty_WithDefaultValue | |||
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Why is having a default value important in this context? Shouldn't we also be testing for the non-default case?
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This change fixes #101877 where the
[JsonIgnore]attribute applied to init-only properties is ignored in source generation mode. In the current behavior, the generated object initializer mistakenly invokes the init for properties marked with[JsonIgnore], which causes the value provided by the constructor to be overwritten (or set to null) during deserialization.