var internal/poll.dupCloexecUnsupported

3 uses

	internal/poll (current package)
		fd_unix.go#L648: var dupCloexecUnsupported atomic.Bool
		fd_unix.go#L652: 	if syscall.F_DUPFD_CLOEXEC != 0 && !dupCloexecUnsupported.Load() {
		fd_unix.go#L662: 			dupCloexecUnsupported.Store(true)

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