This has been supported since v1 but we don't have much test coverage.
C# is going to enable interfaces to have static members and static constructors so we better start testing it.
--- /dev/null
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+.assembly interfacestatics { }
+
+.assembly extern System.Runtime { }
+
+.class interface IFoo<T>
+{
+ .field public static class [System.Runtime]System.Type O
+
+ .method public static specialname rtspecialname void .cctor()
+ {
+ ldtoken !T[]
+ call class [System.Runtime]System.Type class [System.Runtime]System.Type::GetTypeFromHandle(valuetype [System.Runtime]System.RuntimeTypeHandle)
+ stsfld class [System.Runtime]System.Type class IFoo<!T>::O
+ ret
+ }
+
+ .method public static class [System.Runtime]System.Type GimmeT()
+ {
+ ldtoken !T[0...]
+ call class [System.Runtime]System.Type class [System.Runtime]System.Type::GetTypeFromHandle(valuetype [System.Runtime]System.RuntimeTypeHandle)
+ ret
+ }
+
+ .method public static class [System.Runtime]System.Type GimmeU<U>()
+ {
+ ldtoken !!U
+ call class [System.Runtime]System.Type class [System.Runtime]System.Type::GetTypeFromHandle(valuetype [System.Runtime]System.RuntimeTypeHandle)
+ ret
+ }
+
+ .method public static class [System.Runtime]System.Type GimmeU_T<U>()
+ {
+ call class [System.Runtime]System.Type class IFoo<!!U>::GimmeT()
+ ret
+ }
+}
+
+.method static hidebysig int32 Main()
+{
+ .entrypoint
+
+ ldsfld class [System.Runtime]System.Type class IFoo<object>::O
+ ldtoken object[]
+ call class [System.Runtime]System.Type class [System.Runtime]System.Type::GetTypeFromHandle(valuetype [System.Runtime]System.RuntimeTypeHandle)
+ ceq
+ brtrue IFoo_object_O_Okay
+ ldc.i4.1
+ ret
+
+IFoo_object_O_Okay:
+ ldsfld class [System.Runtime]System.Type class IFoo<string>::O
+ ldtoken string[]
+ call class [System.Runtime]System.Type class [System.Runtime]System.Type::GetTypeFromHandle(valuetype [System.Runtime]System.RuntimeTypeHandle)
+ ceq
+ brtrue IFoo_string_O_Okay
+ ldc.i4.2
+ ret
+
+IFoo_string_O_Okay:
+ call class [System.Runtime]System.Type class IFoo<object>::GimmeT()
+ ldtoken object[0...]
+ call class [System.Runtime]System.Type class [System.Runtime]System.Type::GetTypeFromHandle(valuetype [System.Runtime]System.RuntimeTypeHandle)
+ ceq
+ brtrue IFoo_object_Gimme_T_Okay
+ ldc.i4.3
+ ret
+
+IFoo_object_Gimme_T_Okay:
+ call class [System.Runtime]System.Type class IFoo<object>::GimmeU<string>()
+ ldtoken string
+ call class [System.Runtime]System.Type class [System.Runtime]System.Type::GetTypeFromHandle(valuetype [System.Runtime]System.RuntimeTypeHandle)
+ ceq
+ brtrue IFoo_object_Gimme_U_Okay
+ ldc.i4.4
+ ret
+
+IFoo_object_Gimme_U_Okay:
+ call class [System.Runtime]System.Type class IFoo<object>::GimmeU_T<string>()
+ ldtoken string[0...]
+ call class [System.Runtime]System.Type class [System.Runtime]System.Type::GetTypeFromHandle(valuetype [System.Runtime]System.RuntimeTypeHandle)
+ ceq
+ brtrue IFoo_object_Gimme_U_T_Okay
+ ldc.i4.5
+ ret
+
+IFoo_object_Gimme_U_T_Okay:
+
+ ldc.i4 100
+ ret
+}
\ No newline at end of file
--- /dev/null
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+ <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+ <PropertyGroup>
+ <AssemblyName>interfacestatics</AssemblyName>
+ <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+ <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+ <SchemaVersion>2.0</SchemaVersion>
+ <ProjectGuid>{85DFC527-4DB1-595E-A7D7-E94EE1F8140D}</ProjectGuid>
+ <FileAlignment>512</FileAlignment>
+ <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+ <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+ <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
+ <ReferenceLocalMscorlib>true</ReferenceLocalMscorlib>
+ <OutputType>Exe</OutputType>
+ <CLRTestKind>BuildAndRun</CLRTestKind>
+ <CLRTestPriority>0</CLRTestPriority>
+ </PropertyGroup>
+
+ <ItemGroup>
+ <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+ <Visible>False</Visible>
+ </CodeAnalysisDependentAssemblyPaths>
+ </ItemGroup>
+
+ <ItemGroup>
+ <Compile Include="interfacestatics.il" />
+ </ItemGroup>
+
+
+ <ItemGroup>
+ <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+ </ItemGroup>
+ <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+</Project>
--- /dev/null
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System;
+using System.Reflection;
+
+class Program
+{
+ static int Main()
+ {
+ {
+ FieldInfo fi = typeof(IFoo<object>).GetField("O");
+ object val = fi.GetValue(null);
+ if (!object.ReferenceEquals(val, typeof(object[])))
+ throw new Exception();
+ }
+
+ {
+ MethodInfo mi = typeof(IFoo<string>).GetMethod("GimmeT");
+ object val = mi.Invoke(null, Array.Empty<object>());
+ if (!object.ReferenceEquals(val, typeof(string)))
+ throw new Exception();
+ }
+
+ {
+ MethodInfo mi = typeof(IFoo<object>).GetMethod("GimmeU").MakeGenericMethod(typeof(string));
+ object val = mi.Invoke(null, Array.Empty<object>());
+ if (!object.ReferenceEquals(val, typeof(string)))
+ throw new Exception();
+ }
+
+ return 100;
+ }
+}
\ No newline at end of file
--- /dev/null
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+ <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+ <PropertyGroup>
+ <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+ <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+ <SchemaVersion>2.0</SchemaVersion>
+ <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+ <OutputType>Exe</OutputType>
+ <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+ <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+ <CLRTestKind>BuildAndRun</CLRTestKind>
+ <CLRTestPriority>0</CLRTestPriority>
+ </PropertyGroup>
+ <!-- Default configurations to help VS understand the configurations -->
+ <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' "></PropertyGroup>
+ <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' "></PropertyGroup>
+ <ItemGroup>
+ <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+ <Visible>False</Visible>
+ </CodeAnalysisDependentAssemblyPaths>
+ </ItemGroup>
+ <ItemGroup>
+ <!-- Add Compile Object Here -->
+ <Compile Include="consumer.cs" />
+ </ItemGroup>
+ <ItemGroup>
+ <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+ </ItemGroup>
+ <ItemGroup>
+ <ProjectReference Include="provider.ilproj" />
+ </ItemGroup>
+ <ItemGroup>
+ <NoWarn Include="42016,42020,42025,42024" />
+ </ItemGroup>
+ <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+ <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' "></PropertyGroup>
+</Project>
\ No newline at end of file
--- /dev/null
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+.assembly provider { }
+
+.assembly extern mscorlib { }
+
+.class interface public IFoo<T>
+{
+ .field public static class [mscorlib]System.Type O
+
+ .method public static specialname rtspecialname void .cctor()
+ {
+ ldtoken !T[]
+ call class [mscorlib]System.Type class [mscorlib]System.Type::GetTypeFromHandle(valuetype [mscorlib]System.RuntimeTypeHandle)
+ stsfld class [mscorlib]System.Type class IFoo<!T>::O
+ ret
+ }
+
+ .method public static class [mscorlib]System.Type GimmeT()
+ {
+ ldtoken !T
+ call class [mscorlib]System.Type class [mscorlib]System.Type::GetTypeFromHandle(valuetype [mscorlib]System.RuntimeTypeHandle)
+ ret
+ }
+
+ .method public static class [mscorlib]System.Type GimmeU<U>()
+ {
+ ldtoken !!U
+ call class [mscorlib]System.Type class [mscorlib]System.Type::GetTypeFromHandle(valuetype [mscorlib]System.RuntimeTypeHandle)
+ ret
+ }
+}
--- /dev/null
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+ <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+ <PropertyGroup>
+ <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+ <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+ <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+ <SchemaVersion>2.0</SchemaVersion>
+ <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+ <OutputType>Library</OutputType>
+ <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+ <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+ </PropertyGroup>
+ <!-- Default configurations to help VS understand the configurations -->
+ <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+ </PropertyGroup>
+ <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+ </PropertyGroup>
+ <ItemGroup>
+ <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+ <Visible>False</Visible>
+ </CodeAnalysisDependentAssemblyPaths>
+ </ItemGroup>
+ <PropertyGroup>
+
+ </PropertyGroup>
+ <ItemGroup>
+ <Compile Include="provider.il" />
+ </ItemGroup>
+ <ItemGroup>
+ <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+ </ItemGroup>
+ <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+ <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+ </PropertyGroup>
+</Project>