[release/11.0-rc1] Fix crossgen2 rejecting input files with uppercase .DLL/.EXE extensions - #132894
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[release/11.0-rc1] Fix crossgen2 rejecting input files with uppercase .DLL/.EXE extensions#132894github-actions[bot] wants to merge 1 commit into
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…ns (#132857) `crossgen2` rejected input assemblies whose on-disk extension is uppercase (`.DLL`/`.EXE`), which occurs on filesystems/network shares that normalize casing (e.g. WinFsp/virtiofs). This is a regression from `Microsoft.NETCore.App.Crossgen2` 10.0.5 → 10.0.9, breaking `PublishReadyToRun` builds on affected volumes. ## Root Cause `RunSingleCompilation` in `src/coreclr/tools/aot/crossgen2/Program.cs` matched `Path.GetExtension(inFilePath)` against `.dll`/`.exe` using a case-sensitive switch expression, throwing `CommandLineException` for any other casing. ## Fix - Replaced the switch expression with cascading `if`/`else if` statements comparing the extension via `StringComparison.OrdinalIgnoreCase`, so `.dll`, `.DLL`, `.Dll`, `.exe`, `.EXE`, etc. are all accepted. - Fixes #132554 --------- Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com> Co-authored-by: jtschuster <36744439+jtschuster@users.noreply.github.com>
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Backport of #132857 to release/11.0-rc1
/cc @jtschuster @copilot
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IMPORTANT: If this backport is for a servicing release, please verify that:
release/X.0-staging, notrelease/X.0.release/X.0(no-stagingsuffix).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.