Publishing a blazor wasm app throws a Mono Linker exception in .NET 7.0 Preview 6 #2903
Description
Is there an existing issue for this?
- I have searched the existing issues
Describe the bug
Link to a repository that demonstrates the bug:
https://github.com/Stamo-Gochev/blazor-linker-issue
Publishing a blazor wasm app with a custom component rendered in a RenderFragment throws a Mono Linker exception.
The setup has the following specifics:
- The blazor wasm app that is used for testing is the standard .NET 7.0 project template - nothing specific here
- A Razor Class Library is added as a dependency to the blazor wasm app
- A custom component from the Razor Class Library is rendered in the sample page in the blazor wasm app.
- The custom component renders itself in another component that itself just renders its ChildContent fragment.
The blazor wasm app is runnable without errors, the problem is reproducible when the app is published (when linker trimming is executed).
Expected Behavior
No exception is thrown.
Steps To Reproduce
- Clone https://github.com/Stamo-Gochev/blazor-linker-issue
- Navigate to https://github.com/Stamo-Gochev/blazor-linker-issue/tree/master/BlazorLinkerIssue/BlazorLinkerIssue/Server
- Run
dotnet publish -c Release BlazorLinkerIssue.Server.csproj
Note: A global.json file explicitly targets .NET 7.0 Preview 6. If the project is built with .NET 7.0 Preview 5, i.e. if you use:
{
"sdk": {
"version": "7.0.100-preview.5.22307.18"
}
}
instead, then the project is published successfully.
Here are the logs of the publish output:
- .NET 7.0 Preview 6 log - the error is thrown
- .NET 7.0 Preview 5 log - no error is thrown
Exceptions (if any)
An error is thrown:
MSBuild version 17.3.0-preview-22329-01+77c72dd0f for .NET
Determining projects to restore...
All projects are up-to-date for restore.
C:\Program Files\dotnet\sdk\7.0.100-preview.6.22352.1\Sdks\Microsoft.NET.Sdk\targets\Microsoft.NET.RuntimeIdentifierInference.targets(219,5): message NETSDK1057: You are using a preview version of .NET. See: https://aka.ms/dotnet-support-policy [D:\...\blazor-linker-issue\BlazorLinkerIssue\BlazorLinkerIssue\Server\BlazorLinkerIssue.Server.csproj]
C:\Program Files\dotnet\sdk\7.0.100-preview.6.22352.1\Sdks\Microsoft.NET.Sdk\targets\Microsoft.NET.RuntimeIdentifierInference.targets(219,5): message NETSDK1057: You are using a preview version of .NET. See: https://aka.ms/dotnet-support-policy [D:\...\blazor-linker-issue\BlazorLinkerIssue\CustomComponents\CustomComponents.csproj]
C:\Program Files\dotnet\sdk\7.0.100-preview.6.22352.1\Sdks\Microsoft.NET.Sdk\targets\Microsoft.NET.RuntimeIdentifierInference.targets(219,5): message NETSDK1057: You are using a preview version of .NET. See: https://aka.ms/dotnet-support-policy [D:\...\blazor-linker-issue\BlazorLinkerIssue\BlazorLinkerIssue\Shared\BlazorLinkerIssue.Shared.csproj]
CustomComponents -> D:\...\blazor-linker-issue\BlazorLinkerIssue\CustomComponents\bin\Release\net7.0\CustomComponents.dll
BlazorLinkerIssue.Shared -> D:\...\blazor-linker-issue\BlazorLinkerIssue\BlazorLinkerIssue\Shared\bin\Release\net7.0\BlazorLinkerIssue.Shared.dll
BlazorLinkerIssue.Client -> D:\...\blazor-linker-issue\BlazorLinkerIssue\BlazorLinkerIssue\Client\bin\Release\net7.0\BlazorLinkerIssue.Client.dll
BlazorLinkerIssue.Client (Blazor output) -> D:\...\blazor-linker-issue\BlazorLinkerIssue\BlazorLinkerIssue\Client\bin\Release\net7.0\wwwroot
BlazorLinkerIssue.Server -> D:\...\blazor-linker-issue\BlazorLinkerIssue\BlazorLinkerIssue\Server\bin\Release\net7.0\BlazorLinkerIssue.Server.dll
Optimizing assemblies for size may change the behavior of the app. Be sure to test after publishing. See: https://aka.ms/dotnet-illink
Optimizing assemblies for size. This process might take a while.
Stack overflow.
at Mono.Linker.Steps.MarkStep.MarkType(Mono.Cecil.TypeReference, Mono.Linker.DependencyInfo, System.Nullable`1<Mono.Linker.MessageOrigin>)
at Mono.Linker.Steps.MarkStep.MarkGenericArguments(Mono.Cecil.IGenericInstance)
Full log can be fount at:
https://github.com/Stamo-Gochev/blazor-linker-issue/blob/master/BlazorLinkerIssue/BlazorLinkerIssue/Server/publish-output-net7-preview6.txt
.NET Version
7.0.100-preview.6.22352.1
Anything else?
No response