System.Text.Json source generator doesn't work with native AOT IlcDisableReflection #68093
Description
Description
System.Text.Json source generator generates code (that calls code) that uses reflection, hence incompatible with the IlcDisableReflection native AOT option.
Was expecting that source generator can eliminate reflection and work with IlcDisableReflection.
offending line seems to be this:
Reproduction Steps
- Follow native AOT sample app's readme to create the project
- replace
Program.cswith the following
using System.Text.Json;
using System.Text.Json.Serialization;
MyClass stuff = new() { Prop = "value" };
string json = JsonSerializer.Serialize( stuff, MyJsonContext.Default.MyClass );
Console.WriteLine( json );
internal record MyClass {
public string? Prop { get; set; }
}
[JsonSerializable( typeof( MyClass ) )]
internal partial class MyJsonContext : JsonSerializerContext { }- add
<IlcDisableReflection>true</IlcDisableReflection>to csproj file - run
dotnet publish -r <RID> - run the produced exe
Expected behavior
program prints {"Prop":"value"} on the console
Actual behavior
the following error shows up
Unhandled Exception: EETypeRva:0x002EFD88: Reflection_Disabled
at Internal.Reflection.RuntimeTypeInfo.get_Assembly() + 0x59
at System.Text.Json.Serialization.JsonConverter`1..ctor() + 0xc8
at System.Text.Json.Serialization.JsonResumableConverter`1..ctor() + 0x18
at System.Text.Json.Serialization.Converters.JsonMetadataServicesConverter`1..ctor(Func`1, ConverterStrategy) + 0x30
at System.Text.Json.Serialization.Metadata.SourceGenJsonTypeInfo`1.GetConverter(JsonObjectInfoValues`1) + 0x194
at System.Text.Json.Serialization.Metadata.SourceGenJsonTypeInfo`1..ctor(JsonSerializerOptions, JsonObjectInfoValues`1) + 0x78
at System.Text.Json.Serialization.Metadata.JsonMetadataServices.CreateObjectInfo[T](JsonSerializerOptions, JsonObjectInfoValues`1) + 0x67
at MyJsonContext.get_Stuff() + 0x2cd
at Program.<Main>$(String[]) + 0x73
Regression?
No response
Known Workarounds
No response
Configuration
.NET SDK 7.0.100-preview.3.22179.4, commit c48f2c30ee
Windows 10.0.18363, RID: win10-x64
Host version: 7.0.0-preview.3.22175.4, commit 162f836
Other information
No response