dotnet/csharpstandard

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Working space for ECMA-TC49-TG2, the C# standard committee.

Stars: 815
Forks: 99
Open beginner issues: 0
Indexed issues: 249
Avg merge: 1d 14h
Merged PRs (30d): 16

Dominant language: C#
License: CC-BY-4.0
Last GitHub push: Sep 14, 2026
Latest indexed: Sep 15, 2026
Contributing guide: Contributing guide
Code of conduct: Code of conduct
Beginner labels: help wanted

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249 open issues indexed

The special names op_Exponent and op_Exponentiation are not reserved for interop. Open

dotnet/csharpstandard#1302 · 8 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
IndexerNameAttribute should affect reserved member names Open

dotnet/csharpstandard#1303 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
IndexerNameAttribute identifier syntax requirement Open

dotnet/csharpstandard#1305 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Reserved member names for non-methods Open

dotnet/csharpstandard#1307 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Static constructor not triggered by inherited static method Open

dotnet/csharpstandard#1315 · 0 comments · 1 reaction · 0 assignees · Indexed Sep 15, 2026
Property & indexer access not fully updated for ref get accessors Open

dotnet/csharpstandard#1371 · 18 comments · 0 reactions · 1 assignee · Indexed Sep 15, 2026
namespace_or_type_name is not permitted to reference a static class in a using_directive Open

dotnet/csharpstandard#1388 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Review ordering of top-level clauses Open

dotnet/csharpstandard#1399 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Semantics for required standard library API that is not defined in ISO/IEC 23271:2012 Open

dotnet/csharpstandard#1400 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Should a distinct array/string be required when an empty array/string is created? Open

dotnet/csharpstandard#1403 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Lifted operators and default Open

dotnet/csharpstandard#1405 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
"Expansion" vs. "Semantic equivalent" Open

dotnet/csharpstandard#1409 · 0 comments · 0 reactions · 1 assignee · Indexed Sep 15, 2026
Perhaps `value` should not be a contextual keyword Open

dotnet/csharpstandard#1411 · 10 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Saying as much as possible in grammar rules vs. saying less there and augmenting with semantic rules in narrative Open

dotnet/csharpstandard#1423 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Revisiting the name of the term "pattern input value” Open

dotnet/csharpstandard#1424 · 0 comments · 0 reactions · 1 assignee · Indexed Sep 15, 2026
Define "has no body" to mean `;`, and "has a body" to mean either block body or expression body Open

dotnet/csharpstandard#1430 · 0 comments · 0 reactions · 1 assignee · Indexed Sep 15, 2026
"Block body" needs updates in light of expression bodied members Open

type: bug

dotnet/csharpstandard#1434 · 7 comments · 0 reactions · 1 assignee · Indexed Sep 15, 2026
Unclear what is the (ref) safe context of an assignment expression Open

dotnet/csharpstandard#1444 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Evaluation order of (simple) assignments (incl. field assignment, property setter, indexer setter, array element assignment, byref property, byref indexers) Open

dotnet/csharpstandard#1478 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Normative use of a .NET constant not required by this C# spec Open

type: clarity

dotnet/csharpstandard#1479 · 2 comments · 0 reactions · 1 assignee · Indexed Sep 15, 2026
Concern about the definition of `IFormattable` Open

dotnet/csharpstandard#1481 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Conformance and new members Open

dotnet/csharpstandard#1490 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Clarify the situation with `ref` variables referring to `null` Open

dotnet/csharpstandard#1498 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Discards and ref assignment Open

dotnet/csharpstandard#1499 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Retroactive compiler bugfix allowing null conditionals to evaluate to pointer types Open

dotnet/csharpstandard#1513 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
[Tools] Update tools to .NET 10 Open

dotnet/csharpstandard#1514 · 0 comments · 0 reactions · 1 assignee · Indexed Sep 15, 2026
Attribute type list does not contain decimal Open

dotnet/csharpstandard#1522 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Review spec regarding expressions without types Open

dotnet/csharpstandard#1533 · 5 comments · 0 reactions · 1 assignee · Indexed Sep 15, 2026
Lack of clarity between compile-time and runtime processing of user-defined conversions Open

dotnet/csharpstandard#1541 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Incorrect/unclear description of explicit conversions involving user-defined conversions Open

dotnet/csharpstandard#1542 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
CallerMemberNameAttribute on non-function member Open

dotnet/csharpstandard#1549 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
CallerMemberNameAttribute on parameter of attribute constructor referenced by a local function or its type parameter Open

dotnet/csharpstandard#1553 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Create a note around preferring named elements in tuples Open

dotnet/csharpstandard#1574 · 0 comments · 0 reactions · 1 assignee · Indexed Sep 15, 2026
12.6.6 function member invocation lacks specification of timing of reading receiver Open

dotnet/csharpstandard#1584 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Add examples of deconstructor element restrictions Open

dotnet/csharpstandard#1629 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Check semantics of nested contexts in patterns in v9 Open

dotnet/csharpstandard#1648 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Review whether there needs to be some syncing up between §11.2.2 and §9.2.9 *Local variables*, §9.4 *Definite assignment* Open

meeting: discuss

dotnet/csharpstandard#1662 · 14 comments · 0 reactions · 1 assignee · Indexed Sep 15, 2026
Refactor pattern description? Open

dotnet/csharpstandard#1668 · 0 comments · 0 reactions · 1 assignee · Indexed Sep 15, 2026
Come up with a model w.r.t derived interfaces Open

dotnet/csharpstandard#1676 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Add doc comments to all C.3 types Open

status: in-progress

dotnet/csharpstandard#1677 · 0 comments · 0 reactions · 1 assignee · Indexed Sep 15, 2026
Reorganize how record structs are spec'd Open

type: clarity

dotnet/csharpstandard#1697 · 0 comments · 0 reactions · 1 assignee · Indexed Sep 15, 2026
Clarify array initializers and give examples for complex situations Open

dotnet/csharpstandard#1705 · 4 comments · 0 reactions · 1 assignee · Indexed Sep 15, 2026
Apply discard-related changes to deconstructing foreach Open

dotnet/csharpstandard#1711 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
dynamic – missing contextual resolution rules Open

dotnet/csharpstandard#1714 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
`foreach` expansions, value collections. Open

status: needs triaging

dotnet/csharpstandard#1720 · 5 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
[Version 14.0] Support optional and named arguments in Expression trees Open

type: feature

dotnet/csharpstandard#1799 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Implementation-defined and implementation-specific Open

dotnet/csharpstandard#1802 · 2 comments · 0 reactions · 1 assignee · Indexed Sep 15, 2026
return-by or returns-by – consistency needed Open

dotnet/csharpstandard#1803 · 2 comments · 0 reactions · 1 assignee · Indexed Sep 15, 2026
Nigel to update the grammar checker for C# 8 Open

dotnet/csharpstandard#1805 · 0 comments · 0 reactions · 1 assignee · Indexed Sep 15, 2026

dotnet/csharpstandard

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