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[exec] Cast the return value of the comma expression to void? #7222
Description
Activity
Does the return value of
execution::start(execution::start_t::operator()) even make sense? If not, perhaps we should just submit an LWG issue to specify thatexecution::startalways returnsvoid.FWIW, stdexec's
startis already always returningvoid.Please submit as an LWG issue. The discussion around LWG3755 indicates there are some non-trivial considerations floating around.
Reacted by A. Jiang
There are two (perhaps more) places in [exec] where fold-expression is used to expand the function: [exec.when.all] and [exec.snd.expos]:
Do we need to convert the return result to
voidas LWG 3755 does to conform to the current best practice of the standard? Is this editorial, or does it require an LWG? Or maybe this is not necessary at all?