Add errors for existing C# 14 themes #49669
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Add all newly created diagnostics that map to existing consolidated error files.
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Pull Request Overview
This PR documents several new C# compiler error codes (CS9327, CS9328, CS9332, CS9336, CS9339, CS9340, CS9341, CS9342) by moving them from the generic error page to their appropriate topical documentation pages.
- Moved CS9327 and CS9328 to the feature-version-errors documentation.
- Moved CS9332 to the array-declaration-errors documentation.
- Moved CS9336 to the pattern-matching-warnings documentation.
- Moved CS9339 to the extension-declarations documentation.
- Moved CS9340, CS9341, and CS9342 to the overloaded-operator-errors documentation.
Reviewed Changes
Copilot reviewed 7 out of 7 changed files in this pull request and generated 2 comments.
Show a summary per file
| File | Description |
|---|---|
| docs/csharp/misc/sorry-we-don-t-have-specifics-on-this-csharp-error.md | Removed error codes that now have specific documentation |
| docs/csharp/language-reference/toc.yml | Added error codes to displayName lists for appropriate topics |
| docs/csharp/language-reference/compiler-messages/pattern-matching-warnings.md | Added CS9336 to f1_keywords and helpviewer_keywords, combined with CS9335 in error list |
| docs/csharp/language-reference/compiler-messages/overloaded-operator-errors.md | Added CS9340, CS9341, CS9342 to frontmatter and error list |
| docs/csharp/language-reference/compiler-messages/feature-version-errors.md | Added CS9327 and CS9328 to frontmatter and error list |
| docs/csharp/language-reference/compiler-messages/extension-declarations.md | Added CS9339 to frontmatter and error list |
| docs/csharp/language-reference/compiler-messages/array-declaration-errors.md | Added CS9332 to frontmatter and error list |
docs/csharp/language-reference/compiler-messages/feature-version-errors.md
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docs/csharp/language-reference/compiler-messages/array-declaration-errors.md
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…tion-errors.md Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
After adding the final C# 14 updates, perform an edit pass to match the current format.
Add final errors introduced in C# 14 for extensions. Perform an edit pass to match the improved format.
After adding the final diagnostics for C# 14, update this file to match the more recent style.
gewarren
approved these changes
Nov 7, 2025
docs/csharp/language-reference/compiler-messages/pattern-matching-warnings.md
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docs/csharp/language-reference/compiler-messages/array-declaration-errors.md
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docs/csharp/language-reference/compiler-messages/array-declaration-errors.md
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Co-authored-by: Genevieve Warren <24882762+gewarren@users.noreply.github.com>
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Add all newly created diagnostics that map to existing consolidated error files.
Contributes to #49292
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