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Bradley T. Hughes authored
When using clang's libc++, unistd.h is not pulled in automatically anymore (like libstdc++ does). Include unistd.h on UNIX explicitly instead. Change-Id: I21dae6ab2446aca258877e9a2ebe1f7d0a4ef59f Reviewed-by: Konstantin Tokarev <annulen@yandex.ru> Reviewed-by: Eike Ziller <eike.ziller@nokia.com>
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