Analyzer

Diagnostic ID: CA1416: Validate platform compatibility

Analyzer source

• https://github.com/dotnet/roslyn-analyzers/blob/5ed336762c6260a83ece35cd1f6749251452bad0/src/NetAnalyzers/Core/Microsoft.NetCore.Analyzers/InteropServices/PlatformCompatibilityAnalyzer.cs

Describe the bug

For Android, we have an API such as:

[SupportedOSPlatform("android22.0")]
public virtual int AccessibilityTraversalAfter { get; set; }

Using the API with SupportedOSPlatformVersion=21.0 does not result in a CA1416 warning.

We first noticed this here, getting the Android workload on a .NET 10 SDK:

• [main] Update dependencies from dotnet/sdk android#9395

In the following integration test:

• https://github.com/dotnet/android/blob/208c52986a9369b0dab196eb6ab0618b521e2f98/src/Xamarin.Android.Build.Tasks/Tests/Xamarin.Android.Build.Tests/ManifestTest.cs#L1071

Steps To Reproduce

• dotnet new android
• Use button.AccessibilityTraversalAfter
• Observe no warnings

Here is a .binlog if that is helpful: supportedosplatformversion.zip

Expected behavior

Using the API with SupportedOSPlatformVersion=21.0 results in a CA1416 warning.

Actual behavior

Using the API with SupportedOSPlatformVersion=21.0 does not result in a CA1416 warning.

Additional context

I'm guessing the code here would not work as expected for TargetFramework=net10.0, as it has 1 more digit: