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Add --disableLanguageFeature CLI switch and MSBuild property to selectively disable language features #19167

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Add --disableLanguageFeature CLI switch and MSBuild property to selectively disable language features #19167

Refactor to use immutable LanguageVersion with reflection-based featu…
cc29923
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Azure Pipelines / fsharp-ci (Build Source-Build (Managed)) failed Dec 16, 2025 in 8m 6s

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Check failure on line 443 in src/Compiler/Facilities/LanguageFeatures.fs

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@azure-pipelines azure-pipelines / fsharp-ci (Build Source-Build (Managed))

src/Compiler/Facilities/LanguageFeatures.fs#L443 

src/Compiler/Facilities/LanguageFeatures.fs(443,36): error FS3264: (NETCORE_ENGINEERING_TELEMETRY=Build) Nullness warning: Downcasting from 'objnull' into 'LanguageFeature' can introduce unexpected null values. Cast to 'LanguageFeature|null' instead or handle the null before downcasting.
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