[release/10.0] Avoid marking types as reflected on in CreateSpan #118908
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This seems to be at least one of the reasons why Hello World on Linux still needs support for boxed enums. `CreateSpan` is used with an enum type in Unix System.Console, which brings a boxed enum into whole program view and we can't undo the damage this causes to the whole program view during compilation anymore (even though we no longer need the `typeof` then because RyuJIT always expands `CreateSpan`).
…erServices/RuntimeHelpers.cs
jeffschwMSFT
approved these changes
Aug 26, 2025
|
@dotnet/ilc-contrib could someone have a look please? |
jkotas
approved these changes
Aug 26, 2025
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Backport of #118832 to release/10.0
/cc @MichalStrehovsky
Customer Impact
We're significantly improving publish AOT size for small apps in 10.0. Linux didn't see the same size savings due to the issue fixed here.
Regression
Testing
rt-sz size tests, outerloop run.
Risk
The risk is low, calls to this method get expanded by RyuJIT and the body is generally not looked at. Instead of doing work and then throwing an exception, we skip the work and throw exception directly.
IMPORTANT: If this backport is for a servicing release, please verify that:
release/X.0-staging, notrelease/X.0.Package authoring no longer needed in .NET 9
IMPORTANT: Starting with .NET 9, you no longer need to edit a NuGet package's csproj to enable building and bump the version.
Keep in mind that we still need package authoring in .NET 8 and older versions.