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don't leak file descriptors <3 #22678

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don't leak file descriptors <3 #22678

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14 changes: 5 additions & 9 deletions src/libstd/sys/unix/fd.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -60,14 +60,10 @@ impl AsInner<c_int> for FileDesc {

impl Drop for FileDesc {
fn drop(&mut self) {
// closing stdio file handles makes no sense, so never do it. Also, note
// that errors are ignored when closing a file descriptor. The reason
// for this is that if an error occurs we don't actually know if the
// file descriptor was closed or not, and if we retried (for something
// like EINTR), we might close another valid file descriptor (opened
// after we closed ours.
if self.fd > libc::STDERR_FILENO {
let _ = unsafe { libc::close(self.fd) };
}
// Note that errors are ignored when closing a file descriptor. The reason for
// this is that if an error occurs we don't actually know if the file descriptor
// was closed or not, and if we retried (for something like EINTR), we might close
// another valid file descriptor (opened after we closed ours.
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Could you add the missing ) while you're here?

unsafe { libc::close(self.fd); }
}
}