System.TypeLoadException occurred when there is static ReadOnlyMemory<> field #95544
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code: |
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Similar to #88030 |
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Got some more information about this, seems related. This runs fine. Console.WriteLine(new Foo());
struct Foo
{
public ReadOnlyMemory<Foo> Bar;
}This does not. Console.WriteLine(new Foo());
struct Bar
{
public Foo Foo;
}
struct Foo
{
public ReadOnlyMemory<Bar> Bar;
}
// System.TypeLoadException: Could not load type 'Foo' from assembly...And neither does this. Console.WriteLine(new Foo());
struct Foo
{
public ReadOnlyMemory<(Foo, object)> Bar;
}
// Could not load type 'Foo' from assembly [..] because of an invalid self-referential generic field.It is surprising to me that this succeeds in compiling but fails at runtime. Memory is just that, there should be no recursive instantiation of these struct types. |
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Description
dotnet runtime throws System.TypeLoadException when there is static field of ReadOnlyMemory<> with struct itself.
Reproduction Steps
1.new console project,
2.write code to Program.cs:
3.build and run
Expected behavior
no exception
Actual behavior
System.TypeLoadException occurred
Regression?
I don't know.This is my first time using ReadOnlyMemory.
Known Workarounds
No response
Configuration
.NET SDK:
Version: 8.0.100
Commit: 57efcf1350
Workload version: 8.0.100-manifests.8d38d0cc
运行时环境:
OS Name: Windows
OS Version: 10.0.19045
OS Platform: Windows
RID: win-x64
Base Path: C:\Program Files\dotnet\sdk\8.0.100\
已安装 .NET 工作负载:
Workload version: 8.0.100-manifests.8d38d0cc
没有要显示的已安装工作负载。
Host:
Version: 8.0.0
Architecture: x64
Commit: 5535e31
.NET SDKs installed:
8.0.100 [C:\Program Files\dotnet\sdk]
.NET runtimes installed:
Microsoft.AspNetCore.App 6.0.25 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 8.0.0 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.NETCore.App 3.1.32 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 5.0.17 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 6.0.25 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 8.0.0 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.WindowsDesktop.App 3.1.32 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Microsoft.WindowsDesktop.App 5.0.17 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Microsoft.WindowsDesktop.App 6.0.25 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Microsoft.WindowsDesktop.App 8.0.0 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Other architectures found:
x86 [C:\Program Files (x86)\dotnet]
registered at [HKLM\SOFTWARE\dotnet\Setup\InstalledVersions\x86\InstallLocation]
Environment variables:
Not set
global.json file:
Not found
Other information
The exception occurred when I using VS 17.7 with dotnet 7.0.
Then I upgrade VS to 17.8.2 with dotnet 8.0,but the exception still occurred.
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