[Concurrency] Don't use getenv() unless SWIFT_STDLIB_HAS_ENVIRON is set. #42110
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We don't necessarily have environment variables, which is why we have SWIFT_STDLIB_HAS_ENVIRON. Calling getenv() outside of a check of this means Concurrency won't work in environments where getenv() cannot be used. rdar://91050064
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mikeash
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Mar 31, 2022
kubamracek
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Mar 31, 2022
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We don't necessarily have environment variables, which is why we have
SWIFT_STDLIB_HAS_ENVIRON. Callinggetenv()outside of a check of this means Concurrency won't work in environments wheregetenv()cannot be used.rdar://91050064