Add ExtendedLayoutAttribute support for F# compiler#19194

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copilot/add-extended-layout-attribute-support

Commits on Apr 21, 2026

Initial plan

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T-Gro
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Add ExtendedLayoutAttribute support - IL layer, infrastructure, and validation

Copilot
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T-Gro
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Fix indentation in IlxGen.fs for ExtendedLayout support

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T-Gro
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Add comprehensive tests for ExtendedLayoutAttribute support

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T-Gro
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Fix test files with mock ExtendedLayoutAttribute for testing

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T-Gro
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Address code review feedback - add comments for magic numbers and fix IL test

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T-Gro
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Clarify source of extendedLayoutKind value with runtime issue reference

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T-Gro
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Fix CI: rebase onto main, adapt to WellKnownEntityAttributes, fix tests

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Fix CI: renumber error codes 3885-3888, move release notes to 11.0.100

T-Gro
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Review fixes: correct ECMA-335 comment, clarify hasLayout and dead code

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Add missing noExtendedLayoutAttributeCheck for unions, records, enums, and other type kinds

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Remove unused error 3886, improve release notes

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Remove duplicate release notes entry

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Review fixes: add missing noExtendedLayoutAttributeCheck for type abbreviations, update comments

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Commits on May 12, 2026

Merge origin/main into copilot/add-extended-layout-attribute-support

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Copilot
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