Logging Source Generator fails with a InvalidCastException

[theit8514]

Description

Adding a SuppressMessageAttribute to a method marked with LoggerMessageAttribute results in a failed compilation

Reproduction Steps

1. Create a new Class Library
2. Add <PackageReference Include="Microsoft.Extensions.Logging" Version="6.0.1" />
3. Write the following code in Class1.cs

using System.Diagnostics.CodeAnalysis;
using Microsoft.Extensions.Logging;

namespace ClassLibrary1
{
    public partial class Class1
    {
        private ILogger _logger;
        public Class1(ILogger logger) => _logger = logger;

        [LoggerMessage(EventId = 1, Level = LogLevel.Error, Message = "Log Message {Name}")]
        [SuppressMessage("ReSharper", "InconsistentNaming")]
        private partial void LogError(string Name, Exception exception);
    }
}

4. Build

Expected behavior

The source generator should generate.

Actual behavior

The source generator fails with an error in the build log:

CSC : warning CS8785: Generator 'LoggerMessageGenerator' failed to generate source. It will not contribute to the output and compilation errors may occur as a result. Exception was of type 'InvalidCastException' with message 'Unable to cast object of type 'System.String' to type 'System.Int32'.'

Regression?

No response

Known Workarounds

No response

Configuration

dotnet SDK version: 6.0.103
OS: Manjaro Linux (x64)

Other information

No response

[ghost]

Tagging subscribers to this area: @dotnet/area-extensions-logging
See info in area-owners.md if you want to be subscribed.

Issue Details

---

Description

Adding a SuppressMessageAttribute to a method marked with LoggerMessageAttribute results in a failed compilation

Reproduction Steps

1. Create a new Class Library
2. Add <PackageReference Include="Microsoft.Extensions.Logging" Version="6.0.1" />
3. Write the following code in Class1.cs

using System.Diagnostics.CodeAnalysis;
using Microsoft.Extensions.Logging;

namespace ClassLibrary1
{
    public partial class Class1
    {
        private ILogger _logger;
        public Class1(ILogger logger) => _logger = logger;

        [LoggerMessage(EventId = 1, Level = LogLevel.Error, Message = "Log Message {Name}")]
        [SuppressMessage("ReSharper", "InconsistentNaming")]
        private partial void LogError(string Name, Exception exception);
    }
}

4. Build

Expected behavior

The source generator should generate.

Actual behavior

The source generator fails with an error in the build log:

CSC : warning CS8785: Generator 'LoggerMessageGenerator' failed to generate source. It will not contribute to the output and compilation errors may occur as a result. Exception was of type 'InvalidCastException' with message 'Unable to cast object of type 'System.String' to type 'System.Int32'.'

Regression?

No response

Known Workarounds

No response

Configuration

dotnet SDK version: 6.0.103
OS: Manjaro Linux (x64)

Other information

No response

Author:	theit8514
Assignees:	-
Labels:	untriaged, area-Extensions-Logging
Milestone:	-

[maryamariyan]

@theit8514 would you please try this with the newer preview version?

[theit8514]

Tested with sdk version 7.0.100-preview.2.22153.17 and targeting net7.0 and referencing package Microsoft.Extensions.Logging.Abstractions version 7.0.0-preview.2.22152.2. Same build error.

$ dotnet --info
.NET SDK (reflecting any global.json):
 Version:   7.0.100-preview.2.22153.17
 Commit:    9c52c56c13

Runtime Environment:
 OS Name:     manjaro
 OS Version:  
 OS Platform: Linux
 RID:         manjaro-x64
 Base Path:   /usr/share/dotnet/sdk/7.0.100-preview.2.22153.17/

Host (useful for support):
  Version: 7.0.0-preview.2.22152.2
  Commit:  e24f66dff0

.NET SDKs installed:
  6.0.103 [/usr/share/dotnet/sdk]
  7.0.100-preview.2.22153.17 [/usr/share/dotnet/sdk]

.NET runtimes installed:
  Microsoft.AspNetCore.App 6.0.3 [/usr/share/dotnet/shared/Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 7.0.0-preview.2.22153.2 [/usr/share/dotnet/shared/Microsoft.AspNetCore.App]
  Microsoft.NETCore.App 6.0.3 [/usr/share/dotnet/shared/Microsoft.NETCore.App]
  Microsoft.NETCore.App 7.0.0-preview.2.22152.2 [/usr/share/dotnet/shared/Microsoft.NETCore.App]

To install additional .NET runtimes or SDKs:
  https://aka.ms/dotnet-download
$ dotnet build

Welcome to .NET 7.0!
---------------------
SDK Version: 7.0.100-preview.2.22153.17

Telemetry
---------
The .NET tools collect usage data in order to help us improve your experience. It is collected by Microsoft and shared with the community. You can opt-out of telemetry by setting the DOTNET_CLI_TELEMETRY_OPTOUT environment variable to '1' or 'true' using your favorite shell.

Read more about .NET CLI Tools telemetry: https://aka.ms/dotnet-cli-telemetry

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--------------------------------------------------------------------------------------
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Copyright (C) Microsoft Corporation. All rights reserved.

  Determining projects to restore...
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CSC : warning CS8785: Generator 'LoggerMessageGenerator' failed to generate source. It will not contribute to the output and compilation errors may occur as a result. Exception was of type 'InvalidCastException' with message 'Unable to cast object of type 'System.String' to type 'System.Int32'.' [/mnt/src/Test/ClassLibrary1/ClassLibrary1.csproj]
/mnt/src/Test/ClassLibrary1/Class1.cs(18,30): error CS8795: Partial method 'Class1.LogError(string, Exception)' must have an implementation part because it has accessibility modifiers. [/mnt/src/Test/ClassLibrary1/ClassLibrary1.csproj]

Build FAILED.

CSC : warning CS8785: Generator 'LoggerMessageGenerator' failed to generate source. It will not contribute to the output and compilation errors may occur as a result. Exception was of type 'InvalidCastException' with message 'Unable to cast object of type 'System.String' to type 'System.Int32'.' [/mnt/src/Test/ClassLibrary1/ClassLibrary1.csproj]
/mnt/src/Test/ClassLibrary1/Class1.cs(18,30): error CS8795: Partial method 'Class1.LogError(string, Exception)' must have an implementation part because it has accessibility modifiers. [/mnt/src/Test/ClassLibrary1/ClassLibrary1.csproj]
    1 Warning(s)
    1 Error(s)

[maryamariyan]

Thanks will take a look

[maryamariyan]

@theit8514 thanks for the report, the fix should be available for preview 4.