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fix F_DUPFD_CLOEXEC usage
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@ -102,7 +102,7 @@ impl OwnedHandle {
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#[cfg(target_os = "linux")]
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pub(crate) fn dup_impl<F: AsRawFileDescriptor>(fd: &F) -> Fallible<Self> {
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let fd = fd.as_raw_file_descriptor();
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let duped = unsafe { libc::fcntl(fd, libc::F_DUPFD_CLOEXEC) };
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let duped = unsafe { libc::fcntl(fd, libc::F_DUPFD_CLOEXEC, 0) };
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if duped == -1 {
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let err = std::io::Error::last_os_error();
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if let Some(libc::EINVAL) = err.raw_os_error() {
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