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Merged
merged 10 commits into from
Nov 12, 2025
Merged

Describe V9 branches and PRs #1453

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d48dba5
Add new init-accessors
BillWagner Nov 6, 2025
48351dd
New PR for toplevel statements
BillWagner Nov 6, 2025
4f6e072
Add notes for nint
BillWagner Nov 7, 2025
65269b2
Update for records
BillWagner Nov 10, 2025
ec72baa
Add new PR for function pointers
BillWagner Nov 10, 2025
6670245
Add new patterns PR
BillWagner Nov 10, 2025
22b3317
feature branch for static anonymous functions
BillWagner Nov 11, 2025
ece7051
more new PRs
BillWagner Nov 11, 2025
233c9c1
update all branches for v9
BillWagner Nov 11, 2025
c9b02bd
Apply suggestions from code review
RexJaeschke Nov 12, 2025
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44 changes: 22 additions & 22 deletions admin/v9-feature-tracker.md
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Expand Up @@ -8,26 +8,26 @@ Rex started with a set of [MS proposals](https://github.com/dotnet/csharplang/tr

[Any work done by Rex that has not yet been turned into a Draft PR is stored in a Dropbox folder to which Bill, Mads, and Jon have access.]

Feature | PR | Status | Effort | Annotation | Notes
------- | -- | ------ | ------ | ---------- | ------
Init accessors ([MS Proposal](https://github.com/dotnet/csharplang/blob/main/proposals/csharp-9.0/init.md)) | [978](https://github.com/dotnet/csharpstandard/pull/978) | SPEC'D | medium | Done |
Top-level statements ([MS Proposal](https://github.com/dotnet/csharplang/blob/main/proposals/csharp-9.0/top-level-statements.md)) | [980](https://github.com/dotnet/csharpstandard/pull/980) | SPEC'D | small | Done |
Native sized integers ([MS Proposal](https://github.com/dotnet/csharplang/blob/main/proposals/csharp-9.0/native-integers.md)) | [1060](https://github.com/dotnet/csharpstandard/pull/1060) | SPEC'D | medium | Done |
Records ([MS Proposal](https://github.com/dotnet/csharplang/blob/main/proposals/csharp-9.0/records.md)) | [983](https://github.com/dotnet/csharpstandard/pull/983) | SPEC'D | large | Done | See open issues in the PR intro
Function pointers ([MS Proposal](https://github.com/dotnet/csharplang/blob/main/proposals/csharp-9.0/function-pointers.md)) | [984](https://github.com/dotnet/csharpstandard/pull/984) | SPEC'D | large | Done | See open issues in the PR intro
Pattern matching enhancements ([MS Proposal](https://github.com/dotnet/csharplang/blob/main/proposals/csharp-9.0/patterns3.md)) | [1026](https://github.com/dotnet/csharpstandard/pull/1026) | SPEC'D | medium | Done | Might need tweaking after V8 pattern-matching additions merged + open issues addressed
Feature | PR | Branch | Status | Effort | Annotation | Notes
------- | -- | ------ | ------ | ------ | ---------- | ------
Init accessors ([MS Proposal](https://github.com/dotnet/csharplang/blob/main/proposals/csharp-9.0/init.md)) | [#1452](https://github.com/dotnet/csharpstandard/pull/1492) | `v9-init-accessors` | SPEC'D | medium | Done. See review notes in [#978](https://github.com/dotnet/csharpstandard/pull/978) |
Top-level statements ([MS Proposal](https://github.com/dotnet/csharplang/blob/main/proposals/csharp-9.0/top-level-statements.md)) | [#1454](https://github.com/dotnet/csharpstandard/pull/1454) | `v9-top-level-statements` | SPEC'D | small | Done |
Native sized integers ([MS Proposal](https://github.com/dotnet/csharplang/blob/main/proposals/csharp-9.0/native-integers.md)) | [#1457](https://github.com/dotnet/csharpstandard/pull/1457) | `v9-native-sized-integers` | SPEC'D | medium | Done. See review notes in [#1060](https://github.com/dotnet/csharpstandard/pull/1060) |
Records ([MS Proposal](https://github.com/dotnet/csharplang/blob/main/proposals/csharp-9.0/records.md)) | [#1458](https://github.com/dotnet/csharpstandard/pull/1458) | `v9-records` | SPEC'D | large | Done | See open issues in the PR intro
Function pointers ([MS Proposal](https://github.com/dotnet/csharplang/blob/main/proposals/csharp-9.0/function-pointers.md)) | [#1459](https://github.com/dotnet/csharpstandard/pull/1459) |`v9-function-pointers` | SPEC'D | large | Done | See open issues in the PR intro
Pattern matching enhancements ([MS Proposal](https://github.com/dotnet/csharplang/blob/main/proposals/csharp-9.0/patterns3.md)) | [#1460](https://github.com/dotnet/csharpstandard/pull/1460) | `v9-patterns` | SPEC'D | medium | Done | Might need tweaking after V8 pattern-matching additions merged + open issues addressed
Suppress emitting localsinit flag ([MS Proposal](https://github.com/dotnet/csharplang/blob/main/proposals/csharp-9.0/skip-localsinit.md)) | | N/A | | | **This is a compiler feature and not a language feature**
static anonymous functions ([MS Proposal](https://github.com/dotnet/csharplang/blob/main/proposals/csharp-9.0/static-anonymous-functions.md)) | [988](https://github.com/dotnet/csharpstandard/pull/988) | SPEC'D | small | N/A |
Target-typed conditional expressions ([MS Proposal](https://github.com/dotnet/csharplang/blob/main/proposals/csharp-9.0/target-typed-conditional-expression.md)) | [1071](https://github.com/dotnet/csharpstandard/pull/1071)| SPEC'D | small | N/A |
Covariant return types ([MS Proposal](https://github.com/dotnet/csharplang/blob/main/proposals/csharp-9.0/covariant-returns.md)) | | partially SPEC'D | small | | waiting on adoption of V8 "impl. in interfaces"
Extension GetEnumerator support for foreach loops ([MS Proposal](https://github.com/dotnet/csharplang/blob/main/proposals/csharp-9.0/extension-getenumerator.md)) | [989](https://github.com/dotnet/csharpstandard/pull/989)| SPEC'D | small | N/A |
Lambda discard parameters ([MS Proposal](https://github.com/dotnet/csharplang/blob/main/proposals/csharp-9.0/lambda-discard-parameters.md)) | [995](https://github.com/dotnet/csharpstandard/pull/995) | SPEC'D | small | N/A |
Attributes and extern on local functions ([MS Proposal](https://github.com/dotnet/csharplang/blob/main/proposals/csharp-9.0/local-function-attributes.md)) | [994](https://github.com/dotnet/csharpstandard/pull/994)| SPEC'D | small | Done |
Module initializers ([MS Proposal](https://github.com/dotnet/csharplang/blob/main/proposals/csharp-9.0/module-initializers.md)) | [992](https://github.com/dotnet/csharpstandard/pull/992)| SPEC'D | small | Done |
New features for partial methods ([MS Proposal](https://github.com/dotnet/csharplang/blob/main/proposals/csharp-9.0/extending-partial-methods.md)) | [991](https://github.com/dotnet/csharpstandard/pull/991) | SPEC'D | small | Done |
Target-typed new expressions ([MS Proposal](https://github.com/dotnet/csharplang/blob/main/proposals/csharp-9.0/target-typed-new.md)) | [990](https://github.com/dotnet/csharpstandard/pull/990) | SPEC'D | small | N/A |
Unconstrained type parameter annotations ([MS Proposal](https://github.com/dotnet/csharplang/blob/main/proposals/csharp-9.0/unconstrained-type-parameter-annotations.md)) | [1326](https://github.com/dotnet/csharpstandard/pull/1326) | SPEC'D | small | N/A |
Variance safety for static interface members ([MS Proposal](https://github.com/dotnet/csharplang/blob/main/proposals/csharp-9.0/variance-safety-for-static-interface-members.md)) | [1343](https://github.com/dotnet/csharpstandard/pull/1343) | SPEC'D | small | N/A |
Nullable reference types ([MS Proposal](https://github.com/dotnet/csharplang/blob/main/proposals/csharp-9.0/nullable-reference-types-specification.md)) | [1221](https://github.com/dotnet/csharpstandard/pull/1221)| SPEC'D | small | Done | The `default` constraint part is handled by PR #[1326](https://github.com/dotnet/csharpstandard/pull/1326)
Nullable constructor analysis ([MS Proposal](https://github.com/dotnet/csharplang/blob/main/proposals/csharp-9.0/nullable-constructor-analysis.md)) | None | | | | Contains implementation details only; no spec changes necessary
Nullable parameter default value analysis ([MS Proposal](https://github.com/dotnet/csharplang/blob/main/proposals/csharp-9.0/nullable-parameter-default-value-analysis.md)) | None | | | | Contains implementation details only; no spec changes necessary
static anonymous functions ([MS Proposal](https://github.com/dotnet/csharplang/blob/main/proposals/csharp-9.0/static-anonymous-functions.md)) | [#1461](https://github.com/dotnet/csharpstandard/pull/1461) | `v9-static-anonymous-functions`| SPEC'D | small | N/A |
Target-typed conditional expressions ([MS Proposal](https://github.com/dotnet/csharplang/blob/main/proposals/csharp-9.0/target-typed-conditional-expression.md)) | [#1465](https://github.com/dotnet/csharpstandard/pull/1465) | `v9-target-typed-conditional-expression` | SPEC'D | small | N/A |
Covariant return types ([MS Proposal](https://github.com/dotnet/csharplang/blob/main/proposals/csharp-9.0/covariant-returns.md)) | [#1462](https://github.com/dotnet/csharpstandard/pull/1462) | `v9-covariant-return-types` | partially SPEC'D | small | | waiting on adoption of V8 "impl. in interfaces"
Extension GetEnumerator support for foreach loops ([MS Proposal](https://github.com/dotnet/csharplang/blob/main/proposals/csharp-9.0/extension-getenumerator.md)) | [#1463](https://github.com/dotnet/csharpstandard/pull/1463) | `v9-extension-foreach` | SPEC'D | small | N/A |
Lambda discard parameters ([MS Proposal](https://github.com/dotnet/csharplang/blob/main/proposals/csharp-9.0/lambda-discard-parameters.md)) | [#1464](https://github.com/dotnet/csharpstandard/pull/1464) | `v9-lambda-discards` | SPEC'D | small | N/A |
Attributes and extern on local functions ([MS Proposal](https://github.com/dotnet/csharplang/blob/main/proposals/csharp-9.0/local-function-attributes.md)) | [#1466](https://github.com/dotnet/csharpstandard/pull/9914664) | `v9-attribute-locations` | SPEC'D | small | Done |
Module initializers ([MS Proposal](https://github.com/dotnet/csharplang/blob/main/proposals/csharp-9.0/module-initializers.md)) | [#1462](https://github.com/dotnet/csharpstandard/pull/1462)| | `v9-module-initializers` | SPEC'D | small | Done |
New features for partial methods ([MS Proposal](https://github.com/dotnet/csharplang/blob/main/proposals/csharp-9.0/extending-partial-methods.md)) | [#1468](https://github.com/dotnet/csharpstandard/pull/1468) | `v9-more-partial-methods` | SPEC'D | small | Done |
Target-typed new expressions ([MS Proposal](https://github.com/dotnet/csharplang/blob/main/proposals/csharp-9.0/target-typed-new.md)) | [#1469](https://github.com/dotnet/csharpstandard/pull/1469) | `v9-target-typed-new` | SPEC'D | small | N/A |
Unconstrained type parameter annotations ([MS Proposal](https://github.com/dotnet/csharplang/blob/main/proposals/csharp-9.0/unconstrained-type-parameter-annotations.md)) | [#1470](https://github.com/dotnet/csharpstandard/pull/1470) | `v9-unconstrained-type-parameters` | SPEC'D | small | N/A |
Variance safety for static interface members ([MS Proposal](https://github.com/dotnet/csharplang/blob/main/proposals/csharp-9.0/variance-safety-for-static-interface-members.md)) | [#1471](https://github.com/dotnet/csharpstandard/pull/1471) | `v9-static-interface-variance-safetys` | SPEC'D | small | N/A |
Nullable reference types ([MS Proposal](https://github.com/dotnet/csharplang/blob/main/proposals/csharp-9.0/nullable-reference-types-specification.md)) | [#1221](https://github.com/dotnet/csharpstandard/pull/1221) | `add-v9-nullable-attributes` | SPEC'D | small | Done | The `default` constraint part is handled by PR #[1326](https://github.com/dotnet/csharpstandard/pull/1326)
Nullable constructor analysis ([MS Proposal](https://github.com/dotnet/csharplang/blob/main/proposals/csharp-9.0/nullable-constructor-analysis.md)) | None | | | | | | Contains implementation details only; no spec changes necessary
Nullable parameter default value analysis ([MS Proposal](https://github.com/dotnet/csharplang/blob/main/proposals/csharp-9.0/nullable-parameter-default-value-analysis.md)) | None | | | | | | Contains implementation details only; no spec changes necessary