Native AOT compatibility

[EvanMulawski]

In a .NET 8 app with Native AOT enabled (<PublishAot>true</PublishAot>), I'm getting an exception when attempting to parse:

System.InvalidProgramException: Common Language Runtime detected an invalid program.
         at Thunk1ret_MyType_TextFindHelper&(Func`2, TextFindHelper&)
         at RecordParser.Parsers.VariableLengthReader`1.Parse(ReadOnlySpan`1 line)

where MyType is the tuple/class/record/struct type name.

Version: 2.3.0

[leandromoh]

Hi @EvanMulawski

I made a few tests with expression tree in console application and got the same error.

seems the problems only happens if the parameter of the function is a ReadOnlySpan<char> AND if building using dotnet 8. If I change any of these things (replace span by string or building using dotnet 7) everything work as expected.

to help me investigate, could you please check if your code works when building using dotnet 7 ?

[EvanMulawski]

Hi @leandromoh, changing the target framework to .NET 7 with no other changes results in the parsing working as expected.

This looks like a regression in AOT compilation in .NET 8. Might want to open an issue in dotnet/runtime.

[leandromoh]

Opened: dotnet/runtime#96160

[Esperadoce]

Same problem here

[leandromoh]

hello @Esperadoce, for now, RecordParse does not support Native AOT because of the mentioned dotnet issue. in the coversation looks like they dont plan to fix the issue, so probably we will only support AOT using source-generators, which is not in the plans for now.