JSON serializer source generator produces warnings for types with nullable generic parameters #61734
Description
Description
When the model type has a constructor with a generic type that has a nullable type argument, that nullability is not reproduced in the source-generated code for the JSON serializer and produces a nullability warning
Reproduction Steps
In a net6.0 classlib project:
using System.Text.Json.Serialization;
namespace JsonSerializerNullability;
public class Model
{
public Model(Dictionary<string, object?> property) => Property = property;
public Dictionary<string, object?> Property { get; }
}
[JsonSerializable(typeof(Model))]
internal partial class MyJsonSerializerContext : JsonSerializerContext
{ }Expected behavior
No warnings should be produced
Actual behavior
Warning CS8620 Argument of type 'Dictionary<string, object>' cannot be used for parameter 'property' of type 'Dictionary<string, object?>' in 'Model.Model(Dictionary<string, object?> property)' due to differences in the nullability of reference types. JsonSerializerNullability …\MyJsonSerializerContext.Model.g.cs 25 Active
Regression?
No response
Known Workarounds
No response
Configuration
net6.0 on version 6.0.0
Other information
No response