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C++ standards drafts

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[exec.snd.concepts] Misaligned comment Open

Difficulty 2/5 1-3 hours Newbie friendliness 35/100

cplusplus/draft#9339 · 1 comment · Opened Sep 18, 2026
[lex.charset], [lex.ccon], [re.synopt] Tables placed inside multi-page grammars and code blocks Open

P2-Bug

Difficulty 3/5 1-2 days Newbie friendliness 68/100

cplusplus/draft#9331 · 5 comments · Opened Sep 14, 2026
[expr.reflect] Last example assumes sizeof(int)!=1 without saying as such Open

Difficulty 1/5 Under an hour Newbie friendliness 86/100

cplusplus/draft#9330 · 3 comments · 2 reactions · Opened Sep 14, 2026
[checks] Check for `in \xrefc` Open

P3-Other

Difficulty 2/5 1-3 hours Newbie friendliness 72/100

cplusplus/draft#9319 · Opened Sep 6, 2026
[stdatomic.h.syn] not updated appropriately with P3248 Open

P2-Bug

Difficulty 2/5 1-3 hours Newbie friendliness 76/100

cplusplus/draft#9302 · 1 reaction · Opened Sep 3, 2026
[atomics.syn] Missing `// optional` comments for `atomic_intN_t` aliases Open

P2-Bug

Difficulty 1/5 Under an hour Newbie friendliness 85/100

cplusplus/draft#9301 · 1 comment · 1 reaction · Opened Sep 3, 2026
[expr.call]/2 Unclear specification for virtual function calls P4176 Open

Difficulty 2/5 1-3 hours Newbie friendliness 75/100

cplusplus/draft#9300 · 3 comments · Opened Sep 3, 2026
[diff.expr] Undocumented change of `0 == 0` type from `int` to `bool` Open

P2-Bug

Difficulty 2/5 1-3 hours Newbie friendliness 68/100

cplusplus/draft#9299 · 7 comments · Opened Sep 3, 2026
[atomics.types.operations]/[atomics.wait] Clarify the behavior of `constexpr` atomic `wait()` Open

cwg not-editorial P3-Other

Difficulty 5/5 Over a week Newbie friendliness 35/100

cplusplus/draft#9298 · 4 comments · Opened Sep 2, 2026
[expr.call]/1 Lacking `defnx` for "function call" Open

P2-Bug

Difficulty 2/5 1-3 hours Newbie friendliness 72/100

cplusplus/draft#9295 · 4 comments · Opened Sep 1, 2026
[atomics.wait], [atomics.nonmembers] `atomic_notify_*` and `atomic_wait` are not indexed Open

P2-Bug

Difficulty 3/5 1-2 days Newbie friendliness 35/100

cplusplus/draft#9293 · 1 comment · Opened Sep 1, 2026
[expr.prim.lambda.capture]/12 Lengthy but redundant wording Open

Difficulty 1/5 Under an hour Newbie friendliness 85/100

cplusplus/draft#9292 · Opened Sep 1, 2026
Rename [diff.stat] to [diff.stmt] Open

P3-Other

Difficulty 2/5 1-3 hours Newbie friendliness 78/100

cplusplus/draft#9291 · Opened Sep 1, 2026
[expr.prim.lambda.capture] bullet (10.2) "capture (noun)" is undefined, possibly *capture* the non-terminal instead Open

Difficulty 1/5 Under an hour Newbie friendliness 88/100

cplusplus/draft#9290 · Opened Sep 1, 2026
[expr.prim.id.qual]/9 “member” from nowhere Open

P1-Important

Difficulty 1/5 Under an hour Newbie friendliness 78/100

cplusplus/draft#9287 · 2 comments · Opened Aug 31, 2026
[expr.prim.id.unqual]/15 Could a variable be an object / reference? Open

Difficulty 2/5 1-3 hours Newbie friendliness 72/100

cplusplus/draft#9286 · 2 comments · Opened Aug 31, 2026
[expr.prim.id.unqual]/14 "sequenced before" with "postcondition assertion" Open

P1-Important

Difficulty 1/5 Under an hour Newbie friendliness 82/100

cplusplus/draft#9285 · 2 comments · 1 reaction · Opened Aug 31, 2026
[conv.array] Missing Core UB Open

ub-ifndr

Difficulty 3/5 1-2 days Newbie friendliness 48/100

cplusplus/draft#9284 · 3 comments · Opened Aug 31, 2026
[basic.compound] Weird and conflicting uses of `defnx` Open

P2-Bug

Difficulty 2/5 1-3 hours Newbie friendliness 74/100

cplusplus/draft#9282 · Opened Aug 29, 2026
[basic.start.term]/1 "sequenced before" followed by "function" Open

Difficulty 2/5 1-3 hours Newbie friendliness 78/100

cplusplus/draft#9280 · 1 comment · Opened Aug 29, 2026
[ub:basic.stc.alloc.dealloc.constraint] Irrelevant UB example Open

ub-ifndr

Difficulty 2/5 1-3 hours Newbie friendliness 76/100

cplusplus/draft#9276 · 6 comments · Opened Aug 27, 2026
[diff.iso] Some examples are out date in C23 Open

P2-Bug

Difficulty 3/5 1-2 days Newbie friendliness 55/100

cplusplus/draft#9266 · 2 reactions · Opened Aug 20, 2026
[diff.class] int bit-fields now must be signed in C2Y Open

Difficulty 3/5 1-2 days Newbie friendliness 48/100

cplusplus/draft#9265 · 1 comment · Opened Aug 20, 2026
CWG1670 makes the last paragraph of [class.conv.fct] unnecessary Open

Difficulty 2/5 1-3 hours Newbie friendliness 67/100

cplusplus/draft#9263 · 1 comment · Opened Aug 19, 2026
[organization.general] There is a missed subclause not mentioned in the General subclause Open

P2-Bug

Difficulty 1/5 Under an hour Newbie friendliness 82/100

cplusplus/draft#9261 · Opened Aug 18, 2026
[lex.name] The note could be clearer to say keywords are identifiers before phase 7. Open

Difficulty 1/5 Under an hour Newbie friendliness 78/100

cplusplus/draft#9260 · Opened Aug 18, 2026
[diff.expr] Paragraph added by CWG2875 is not correct for C23 Open

cplusplus/draft#9248 · 1 comment · 1 assignee · Opened Aug 9, 2026
[optional] Inconsistent indexing for "contain(s) a value". Open

P2-Bug

Difficulty 3/5 1-2 days Newbie friendliness 35/100

cplusplus/draft#9242 · Opened Aug 3, 2026
[meta.reflection.queries] [dcl.fct] Disagreement about whether `int()const` is const qualified Open

Difficulty 3/5 1-2 days Newbie friendliness 48/100

cplusplus/draft#9239 · 4 comments · 2 reactions · Opened Jul 31, 2026
[ifndr:basic.def.odr.definition.matches] wrong parity of negation, wrong example Open

P2-Bug ub-ifndr

Difficulty 1/5 Under an hour Newbie friendliness 92/100

cplusplus/draft#9238 · 7 comments · Opened Jul 28, 2026
[format], [input.output] Hallucinated reference to "Unicode Standard, Chapter 3.9 U+FFFD Substitution in Conversion" Open

P2-Bug

Difficulty 3/5 1-2 days Newbie friendliness 50/100

cplusplus/draft#9228 · 1 comment · Opened Jul 24, 2026
[rand.req.eng][rand.req.dist] What is `fmtflags`? LWG4618 Open

lwg not-editorial

Difficulty 2/5 1-3 hours Newbie friendliness 76/100

cplusplus/draft#9220 · 3 comments · 2 reactions · Opened Jul 21, 2026
[ub:expr.expr.eval] Description needs to be updated for arithmetic expressions Open

P2-Bug ub-ifndr

Difficulty 2/5 1-3 hours Newbie friendliness 68/100

cplusplus/draft#9189 · Opened Jul 16, 2026
[dcl.type.decltype] What type does decltype of a splice specialization denote? Open

Difficulty 4/5 3-5 days Newbie friendliness 42/100

cplusplus/draft#9173 · 1 comment · Opened Jul 3, 2026
[expr.prim.splice] Should variable-template splice specializations be constified in contract predicates? Open

Difficulty 5/5 Over a week Newbie friendliness 38/100

cplusplus/draft#9172 · 1 comment · Opened Jul 3, 2026
[sequence.reqmts], [associative.reqmts.general]: Grammatical corrections for a.erase(q) Open

P3-Other

Difficulty 2/5 1-3 hours Newbie friendliness 72/100

cplusplus/draft#9166 · 2 comments · Opened Jun 29, 2026
[cmp.categories.pre] Anonymous parameter or unnamed parameter? Open

Difficulty 2/5 1-3 hours Newbie friendliness 64/100

cplusplus/draft#9062 · 2 comments · 2 reactions · Opened Jun 11, 2026
[diff.library] Entry for `abs` incompatibility Open

P2-Bug

Difficulty 2/5 1-3 hours Newbie friendliness 68/100

cplusplus/draft#9035 · 8 comments · Opened May 25, 2026
[hardware.interference] Bad examples of using alignas Open

lwg

Difficulty 4/5 3-5 days Newbie friendliness 45/100

cplusplus/draft#9007 · 4 comments · Opened Apr 29, 2026
[variant] A better name for `GET` Open

P3-Other

Difficulty 5/5 Over a week Newbie friendliness 35/100

cplusplus/draft#9003 · 1 comment · Opened Apr 27, 2026
[func.wrap.ref.class] Rename the parameter `c` in `constant_wrapper<c, F>`? Open

P3-Other

Difficulty 1/5 1-3 hours Newbie friendliness 55/100

cplusplus/draft#8980 · 9 comments · Opened Apr 22, 2026
[const.wrap.class] The deleted `operator,` overload has meaningless `constexpr` and `noexcept` Open

P3-Other

Difficulty 2/5 1-3 hours Newbie friendliness 55/100

cplusplus/draft#8951 · 2 comments · Opened Apr 18, 2026
[round.style] Unclear whether the specification is complete and unambiguous Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

cplusplus/draft#8942 · 3 comments · Opened Apr 12, 2026
"potentially evaluated expression" vs "potentially-evaluated subexpression" Open

P2-Bug

Difficulty 2/5 1-3 hours Newbie friendliness 48/100

cplusplus/draft#8937 · 1 comment · Opened Apr 9, 2026
Inconsistent parameter names for erase members of unordered containers Open

P2-Bug

Difficulty 2/5 1-3 hours Newbie friendliness 68/100

cplusplus/draft#8904 · 2 comments · Opened Apr 1, 2026
[basic.fundamental] Remove "integer type" Open

P3-Other

Difficulty 3/5 1-2 days Newbie friendliness 68/100

cplusplus/draft#8891 · 1 reaction · Opened Mar 30, 2026
[numerics.defns] ISO does not like "Definitions" for subclause titles Open

P2-Bug

Difficulty 2/5 1-3 hours Newbie friendliness 35/100

cplusplus/draft#8815 · Opened Mar 26, 2026
[checks] Add checks for indexing of some operators Open

P3-Other

Difficulty 3/5 1-2 days Newbie friendliness 62/100

cplusplus/draft#8813 · Opened Mar 25, 2026
[tuple], [variant] Use pack indexing Open

P3-Other

Difficulty 2/5 1-3 hours Newbie friendliness 68/100

cplusplus/draft#8795 · 4 comments · 1 reaction · Opened Mar 18, 2026
[variant] Mandates and Constraints in the wrong order Open

P2-Bug

Difficulty 2/5 1-3 hours Newbie friendliness 50/100

cplusplus/draft#8794 · Opened Mar 18, 2026

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