NullReferenceException in ConvertComImportToGeneratedComInterfaceAnalyzer #94968
Description
Description
Visual Studio reports AD0001 Analyzer 'Microsoft.Interop.Analyzers.ConvertComImportToGeneratedComInterfaceAnalyzer' threw an exception of type 'System.NullReferenceException' with message 'Object reference not set to an instance of an object.'.
Note that dotnet build doesn't report any warning.
Reproduction Steps
<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
<TargetFramework>net8.0</TargetFramework>
<ImplicitUsings>enable</ImplicitUsings>
<Nullable>enable</Nullable>
<AllowUnsafeBlocks>true</AllowUnsafeBlocks>
</PropertyGroup>
</Project>using System.Runtime.InteropServices;
namespace ClassLibrary1;
[ComImport()]
[Guid("42f85136-db7e-439c-85f1-e4075d135fc8")]
[InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
internal interface IFileDialog
{
[PreserveSig]
int Show([In] nint parent);
}
[ComImport()]
[Guid("d57c7288-d4ad-4768-be02-9d969532d960")]
[InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
internal interface IFileOpenDialog : IFileDialog
{
[PreserveSig]
new int Show([In] nint parent);
}
[ComImport]
[Guid("d57c7288-d4ad-4768-be02-9d969532d960")]
[CoClass(typeof(FileOpenDialogRCW))]
internal interface NativeFileOpenDialog : IFileOpenDialog
{
}
[ComImport]
[ClassInterface(ClassInterfaceType.None)]
[Guid("DC1C5A9C-E88A-4dde-A5A1-60F82A20AEF7")]
internal class FileOpenDialogRCW
{
}Expected behavior
No warning in Visual Studio
Actual behavior
Warning AD0001 Analyzer 'Microsoft.Interop.Analyzers.ConvertComImportToGeneratedComInterfaceAnalyzer' threw an exception of type 'System.NullReferenceException' with message 'Object reference not set to an instance of an object.'.
Exception occurred with following context:
Compilation: ClassLibrary1
ISymbol: NativeFileOpenDialog (NamedType)
System.NullReferenceException: Object reference not set to an instance of an object.
at Microsoft.Interop.Analyzers.ConvertComImportToGeneratedComInterfaceAnalyzer.<>c__DisplayClass3_0.<Initialize>b__2(SymbolAnalysisContext context)
at Microsoft.CodeAnalysis.Diagnostics.AnalyzerExecutor.ExecuteAndCatchIfThrows_NoLock[TArg](DiagnosticAnalyzer analyzer, Action`1 analyze, TArg argument, Nullable`1 info, CancellationToken cancellationToken)
Regression?
No response
Known Workarounds
No response
Configuration
Visual Studio version: 17.9.0 Preview 1.0
dotnet --info
.NET SDK:
Version: 8.0.100
Commit: 57efcf1350
Workload version: 8.0.100-manifests.71b9f198
Runtime Environment:
OS Name: Windows
OS Version: 10.0.22635
OS Platform: Windows
RID: win-x64
Base Path: C:\Program Files\dotnet\sdk\8.0.100\
.NET workloads installed:
Workload version: 8.0.100-manifests.71b9f198
There are no installed workloads to display.
Host:
Version: 8.0.0
Architecture: x64
Commit: 5535e31a71
.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 7.0.14 [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 6.0.25 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 7.0.14 [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 6.0.25 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Microsoft.WindowsDesktop.App 7.0.14 [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]
Other information
No response