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LibraryImport methods should be implicitly RequiresUnsafe #125801
Description
Methods attributed with LibraryImportAttribute are implicitly unsafe. Although the marshalling logic could be analyzed to be considered memory-safe, the compiler cannot validate that the underlying extern DllImport is targeting a method with a valid signature.
Today, the stubs generated by LibraryImportGenerator will not generate the RequiresUnsafeAttribute on the produced stubs. This causes inconsistency with stubs that have no marshalling (they are just a raw DllImport, which is extern).
The LibraryImportGenerator should add the RequiresUnsafeAttribute to all generated stubs to provide a consistent experience.
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dotnet-policy-service commentedon Mar 19, 2026
Tagging subscribers to this area: @dotnet/interop-contrib
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dotnet-policy-service commentedon Apr 13, 2026
Tagging subscribers to this area: @dotnet/interop-contrib
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AaronRobinsonMSFT commentedon Jul 15, 2026
Moved this to .NET 12. @jkoritzinsky if you can do this in .NET 11 that is also fine.
jkoritzinsky commentedon Jul 20, 2026
Closing this as we're taking a different approach (see dotnet/roslyn#84555)