In AsyncSocketTest.SendMessageFlags test use folly::test::TemporaryFile object instead of directly creating a file with O_TMPFILE flag
In AsyncSocketTest.SendMessageFlags test use folly::test::TemporaryFile object instead of directly creating a file with O_TMPFILE flag

Summary: O_TMPFILE flag is not available on older Linux systems (supported starting Linux 3.11). Got complains about it on GitHub (https://fburl.com/9d848m7i) Will use folly::test::TemporaryFile instead.

Reviewed By: yfeldblum

Differential Revision: D4729733

fbshipit-source-id: 903563825c5b939e35c61725da559e33d21212c4

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