CWG Poll 1: P3921R0 DR issues #8485

eisenwave · 2025-11-09T09:59:12Z

Fixes NB CA 041 (C++26 CD).
Fixes NB CA 092 (C++26 CD).
Fixes NB US 29-062 (C++26 CD).
Fixes NB US 35-066 (C++26 CD).
Fixes NB US 34-067 (C++26 CD).
Fixes NB US 60-110 (C++26 CD).
Fixes NB US 43-080 (C++26 CD).
Fixes NB US 15-032 (C++26 CD).
Fixes NB AT 4-099 (C++26 CD).
Fixes NB CA 045 (C++26 CD).
Fixes NB FR 155 (C++26 CD).

eisenwave · 2025-11-09T19:25:40Z

@jensmaurer how does the referencing of editorial submissions and NB comments work on these types of PRs?

Should I add a Fixes cplusplus/CWG/... for each?
Should I add a Fixes cplusplus/nbballot/... for each closed NB comment?
Should I add a Fixes NB ... (C++26 CD). to the respective commit messages?

jensmaurer · 2025-11-12T21:53:20Z

Should I add a Fixes NB ... (C++26 CD). to the respective commit messages?

Yes, please. We want a permanent record of those.

The "(Also) fixes" for /CWG/ and /nbballot/ goes into the pull request (initial comment) only, but please do add these (you did, apparently) so that when Thomas merges this, all related issues are auto-closed. This is github-level org only, so doesn't go into the commit message.

jensmaurer · 2025-11-12T21:54:20Z

Please fix

! Undefined control sequence.
2025-11-09T15:18:20.7047350Z l.7572 followed by \tocde
2025-11-09T15:18:20.7047500Z                          {dt}, and

Also, please check why this has merge conflicts.

source/basic.tex

tkoeppe · 2025-12-13T11:39:22Z

@eisenwave I don't seem to have permissions to push into this PR branch. Would you be willing to change that, or shall I just move the branch elsewhere?

eisenwave · 2025-12-13T11:41:25Z

Yeah sure, I don't know why you wouldn't have permission; I never uncheck the permission on these things.

eisenwave · 2025-12-13T11:45:38Z

@tkoeppe I have invited you as a collaborator to both my forks. This should give you permission to make any change you want on all my PRs.

tkoeppe · 2025-12-13T11:46:09Z

Thanks, that works too!

…h indirection/address operators Fixes NB US 267-401 (C++26 CD). Editorial notes: * [diff.expr] Use "example" environment as is our new style.

tkoeppe · 2025-12-13T14:47:00Z

I think CWG3001 is missing? I'll add it (but just to check that that's indeed the case).

…ects

Fixes NB CA 041 (C++26 CD).

…of-lifetime objects

Fixes NB US 29-062 (C++26 CD).

Fixes NB US 35-066 (C++26 CD).

Fixes NB US 34-067 (C++26 CD).

Fixes NB US 60-110 (C++26 CD).

Fixes NB US 43-080 (C++26 CD).

Fixes NB US 15-032 (C++26 CD).

…dependent initializer Fixes NB AT 4-099 (C++26 CD).

Fixes NB AT 4-099 (C++26 CD).

Fixes NB CA 045 (C++26 CD).

eisenwave · 2025-12-13T16:11:05Z

I may have slipped up because CWG3101 is excluded. If CWG3001 is missing, that's simply an accident on my part.

Editorial note: * Changed "requires expression" to \grammarterm{requires-expression}. Only the latter form seems to be in use.

Fixes NB FR 155 (C++26 CD).

tkoeppe · 2025-12-13T16:34:06Z

Yep, got it, thanks!

Done.

eisenwave added this to the post-2025-11 milestone Nov 9, 2025

eisenwave changed the title ~~CWG2555 Ineffective redeclaration prevention for using-declarators~~ P3921R0 DR issues Nov 9, 2025

eisenwave force-pushed the motions-2025-11-cwg-1 branch from ba92856 to ef2b72c Compare November 9, 2025 11:41

eisenwave marked this pull request as ready for review November 9, 2025 15:17

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eisenwave added the changes requested Changes to the wording or approach have been requested and not yet applied. label Nov 13, 2025

tkoeppe changed the title ~~P3921R0 DR issues~~ CWG Poll 1: P3921R0 DR issues Nov 15, 2025

eisenwave force-pushed the motions-2025-11-cwg-1 branch from a87b471 to 5ac1488 Compare November 23, 2025 07:11

eisenwave removed the changes requested Changes to the wording or approach have been requested and not yet applied. label Nov 23, 2025

eisenwave requested a review from jensmaurer November 23, 2025 07:18

jensmaurer previously requested changes Nov 23, 2025

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eisenwave requested a review from jensmaurer November 24, 2025 05:51

eisenwave added 2 commits December 13, 2025 11:36

CWG2555 Ineffective redeclaration prevention for using-declarators

dc89619

CWG2677 Replacing union subobjects

37d12fd

tkoeppe force-pushed the motions-2025-11-cwg-1 branch from 3ce24ee to 47fa3cb Compare December 13, 2025 11:46

CWG2875 Missing support for round-tripping null pointer values throug…

9e6cdd3

…h indirection/address operators Fixes NB US 267-401 (C++26 CD). Editorial notes: * [diff.expr] Use "example" environment as is our new style.

tkoeppe force-pushed the motions-2025-11-cwg-1 branch from 47fa3cb to 90908ed Compare December 13, 2025 13:56

eisenwave and others added 5 commits December 13, 2025 15:12

CWG2900 Deduction of non-type template arguments with placeholder types

a9cc880

CWG2929 Lifetime of trivially-destructible static or thread-local obj…

9d2bc91

…ects

CWG2941 Lifetime extension for function-style cast to reference type

c46d6e7

Fixes NB CA 041 (C++26 CD).

CWG3001 Inconsistent restrictions for static_cast on pointers to out-…

560c6aa

…of-lifetime objects

CWG3002 Template parameter/argument confusion

bc34c21

eisenwave added 17 commits December 13, 2025 15:50

CWG3072 Incorrect examples for lambda SFINAE

41c5c55

CWG3073 Dependence of R on T2 is unclear

68c6635

CWG3075 Unclear matching of import directive

3243d8e

CWG3076 Remove unnecessary IFNDR for malformed header-name-tokens

4fc3903

CWG3077 Undesirable formation of import directive with string-literal

a4bc63f

CWG3078 Different treatment of #include pp-tokens and header-name-tokens

3140e5f

CWG3079 Allow empty-declarations in anonymous unions

5b61c71

CWG3080 Clarify kinds of permitted template template arguments

ae227c7

CWG3081 Require glvalue when splicing direct base class relationship

73dcbe2

Fixes NB US 29-062 (C++26 CD).

CWG3083 Remove redundant restrictions on class and enum definitions

c41620c

Fixes NB US 35-066 (C++26 CD).

CWG3085 Apply restriction inside for-range-declaration

fb6d393

Fixes NB US 34-067 (C++26 CD).

CWG3086 Destringizing should consider all sorts of encoding-prefixes

5850cd5

Fixes NB US 60-110 (C++26 CD).

CWG3090 Internal linkage from header units

2c581e9

Fixes NB US 43-080 (C++26 CD).

CWG3091 Linking of translation units as sequences of tokens

aa9f285

Fixes NB US 15-032 (C++26 CD).

CWG3096 Value-dependence of size of structured binding pack with non-…

1968418

…dependent initializer Fixes NB AT 4-099 (C++26 CD).

CWG3097 Lambda expression introduces a scope

dc9b135

Fixes NB AT 4-099 (C++26 CD).

CWG3100 Destruction order for objects with static storage duration

441eeba

Fixes NB CA 045 (C++26 CD).

tkoeppe force-pushed the motions-2025-11-cwg-1 branch from 90908ed to a091de6 Compare December 13, 2025 16:04

eisenwave added 7 commits December 13, 2025 16:31

CWG3102 Update list of void contexts

fa5bfc7

Editorial note: * Changed "requires expression" to \grammarterm{requires-expression}. Only the latter form seems to be in use.

CWG3105 Consteval destructor through immediate escalation

fa0e563

CWG3106 Redundant exclusion of (non-existent) UCNs in r-char-sequences

0312df9

CWG3107 Misleading note "An alias template name is never deduced."

3800851

CWG3111 Template parameter objects of array type

a64ab84

CWG3112 Introduce a term for C-style variadic functions

ee16c7f

Fixes NB FR 155 (C++26 CD).

CWG3116 First element of an array

5bfe790

tkoeppe force-pushed the motions-2025-11-cwg-1 branch from a091de6 to 5bfe790 Compare December 13, 2025 16:40

tkoeppe merged commit cd27e1f into cplusplus:main Dec 13, 2025
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CWG Poll 1: P3921R0 DR issues #8485

CWG Poll 1: P3921R0 DR issues #8485

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