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WIP :: Bugfix :: Fix F# exception serialization to preserve fields#19342

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WIP :: Bugfix :: Fix F# exception serialization to preserve fields#19342
T-Gro wants to merge 1 commit intomainfrom
codegen/fix-exception-serialization

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@T-Gro T-Gro commented Feb 20, 2026

Fixes F# exceptions losing their field values during serialization.

Exceptions with fields now emit a GetObjectData override and a deserialization constructor that save/restore the fields via SerializationInfo, enabling correct ISerializable roundtrips.

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github-actions bot commented Feb 20, 2026

❗ Release notes required


✅ Found changes and release notes in following paths:

Change path Release notes path Description
src/Compiler docs/release-notes/.FSharp.Compiler.Service/10.0.300.md

@T-Gro T-Gro force-pushed the codegen/fix-exception-serialization branch 3 times, most recently from c9b17c0 to f6f7424 Compare February 20, 2026 17:31
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T-Gro commented Feb 20, 2026

/azp run fsharp-ci

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@T-Gro T-Gro force-pushed the codegen/fix-exception-serialization branch from f6f7424 to 675d541 Compare February 20, 2026 19:29
Fixes #878

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
@T-Gro T-Gro force-pushed the codegen/fix-exception-serialization branch from 675d541 to 4b0a72e Compare February 20, 2026 19:29
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Serialization of F#-defined exception variants doesn't serialize fields

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