Reflection regression - Type.GetType does not skip leading `.`

[AndriySvyryd]

Description

Type.GetType does not find the type when type name starts with . (dot)..

Reproduction Steps

class MyType
{
    static void Main() => Console.WriteLine(Type.GetType(".MyType"));
}

Expected behavior

Type is found

Actual behavior

Type is not found

Regression?

Yes, this used to work on SDK 8.0.100-preview.4.23171.22

Known Workarounds

No response

Configuration

SDK 8.0.100-preview.4.23210.1
macOS-11.6.7
x64

Other information

No response

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Issue Details

---

Description

GetProperty returns null for a static property on a class in the global namespace, only on OSX.

Reproduction Steps

Run the attached repro

Expected behavior

No exceptions thrown

Actual behavior

System.NullReferenceException : Object reference not set to an instance of an object.

Regression?

Yes, this used to work on SDK 8.0.100-preview.4.23171.22

Known Workarounds

No response

Configuration

SDK 8.0.100-preview.4.23210.1
macOS-11.6.7
x64

Other information

No response

Author:	AndriySvyryd
Assignees:	-
Labels:	area-System.Reflection, untriaged
Milestone:	-

[AaronRobinsonMSFT]

/cc @buyaa-n

[jkotas]

@EgorBo This is very recent regression. My guess is that it was introduced by #83911.

public partial class GlobalNamespaceContextModel : RuntimeModel
{
    static GlobalNamespaceContextModel()
    {
        var model = new GlobalNamespaceContextModel();
        ...
        _instance = model;
    }

    private static GlobalNamespaceContextModel _instance;
    public static IModel Instance => _instance; <- This returns null when invoked by reflection.
}

[EgorBo]

hm.. I can't repro no matter what I do - I tried the exact SDK version + played with R2R/TC modes - it still prints "Success!" on run for me

macOS-x64 13.2.1

[EgorBo]

@AndriySvyryd any extra steps I need to do, does it repro via dotnet run or in VSfM?

[EgorBo]

Also tried to run it in a loop (via bash) and with various stress modes - still no luck reproing

Tagging subscribers to this area: @JulieLeeMSFT, @jakobbotsch, @kunalspathak
See info in area-owners.md if you want to be subscribed.

Issue Details

---

Description

GetProperty returns null for a static property on a class in the global namespace, only on OSX.

Reproduction Steps

Run the attached repro

Expected behavior

No exceptions thrown

Actual behavior

System.NullReferenceException : Object reference not set to an instance of an object.

Regression?

Yes, this used to work on SDK 8.0.100-preview.4.23171.22

Known Workarounds

No response

Configuration

SDK 8.0.100-preview.4.23210.1
macOS-11.6.7
x64

Other information

No response

Author:	AndriySvyryd
Assignees:	EgorBo
Labels:	area-CodeGen-coreclr, untriaged
Milestone:	-