Update compiler guards for concurrency #1277
Merged
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Motivation:
The 'right' way to check if Swift concurrency is available is to use
#if compiler(>=5.5) && canImport(_Concurrency)
. We are missingcurrently missing the
canImport
check.Modifications:
Add check for
canImport(_Concurrency)
.Results:
We more correctly check whether concurrency is available.