300                 let iovecs = $crate::file_traits::lib::VolatileSlice::as_iobufs(bufs);  localVariable
302                 if iovecs.is_empty() {
311                         iovecs.as_ptr(),
312                         iovecs.len() as std::os::raw::c_int,
346                 let iovecs = $crate::file_traits::lib::VolatileSlice::as_iobufs(bufs);  localVariable
348                 if iovecs.is_empty() {
357                         iovecs.as_ptr(),
358                         iovecs.len() as std::os::raw::c_int,
403                 let iovecs = $crate::file_traits::lib::VolatileSlice::as_iobufs(bufs);  localVariable
405                 if iovecs.is_empty() {
414                         iovecs.as_ptr(),
415                         iovecs.len() as std::os::raw::c_int,
454                 let iovecs = $crate::file_traits::lib::VolatileSlice::as_iobufs(bufs);  localVariable
456                 if iovecs.is_empty() {
465                         iovecs.as_ptr(),
466                         iovecs.len() as std::os::raw::c_int,