1 Introduction

This paper provides replacement wording for the following papers:

• [P3940R0]: Rename concept tags for C++26: sender_t to sender_tag
• [P4031R1]: Rename system_context_replaceability namespace

This resolves the following national body comment on the C++26 CD:

• US 205-320

and partially addresses the following national body comment on the C++26 CD:

• RO 4-395

Because there are multiple papers in flight targeting 33 [exec], LWG requested replacement wording for renames to minimize merge conflicts.

2 Wording

Instructions to the editor:

After applying all other papers moved during the Croydon meeting, please make the following replacements in 33 [exec]:

• Replace each instance of sender_t with sender_tag.
• Replace each instance of scheduler_t with scheduler_tag.
• Replace each instance of operation_state_t with operation_state_tag.
• Replace each instance of system_context_replaceability with parallel_scheduler_replacement.
• Replace each instance of sysctxrepl in a stable name with parschedrepl.
• Replace each instance of receiver_t outside [exec.continues.on]¹ with receiver_tag.
• In [exec.continues.on], replace using receiver_concept = receiver_t; with using receiver_concept = receiver_tag;.

3 References

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1. In particular, this cross-reference is after [P3826R5] has been applied (in the current working draft [N5032], the relevant wording is located in 33.9.12.7 [exec.schedule.from]).↩︎