Add feature-test macro changes section to P2300

cplusplus / sender-receiver

Issues list for P2300

Apache License 2.0

18 stars 3 forks source link

Open lewissbaker opened 3 months ago

lewissbaker commented 3 months ago

Probably need to at least bump the following macros:

__cpp_lib_execution
__cpp_lib_jthread (for new stop-token facilities - stop_token doesn't have its own macro, should it?)

What else should we allow code-bases to detect features independently on?

queryable concept
run_loop
individual algorithms (the ranges library seems to be adding new feature-test macros for each algorithm)

lewissbaker commented 3 weeks ago

The __cpp_lib_senders feature-test macro was added in P2300R10 in 59268fae941ce4f11ce52c811ed52ca9800c7031.

However, we should perhaps still also bump the __cpp_lib_jthread macro for the stop-token facilities? Need to ping LWG about this.

jwakely commented 3 days ago

individual algorithms (the ranges library seems to be adding new feature-test macros for each algorithm)

That's the case when adding new algorithms after the initial merge of The One Ranges Proposal, but we didn't do that for the initial set of algos.