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qcow: use std::mem::size_of_val()

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Rather than manually calculate the size of the slice in bytes. This
fixes a beta clippy issue.

Signed-off-by: Rob Bradford <rbradford@rivosinc.com>
This commit is contained in:
Rob Bradford 2023-04-22 08:21:44 +01:00 committed by Rob Bradford
parent 036af673e6
commit 2554f2a8d4
1 changed files with 3 additions and 2 deletions
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5
qcow/src/qcow_raw_file.rs
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@ -66,7 +66,7 @@ impl QcowRawFile {
non_zero_flags: u64,
) -> io::Result<()> {
self.file.seek(SeekFrom::Start(offset))?;
let mut buffer = BufWriter::with_capacity(table.len() * size_of::<u64>(), &mut self.file);
let mut buffer = BufWriter::with_capacity(std::mem::size_of_val(table), &mut self.file);
for addr in table {
let val = if *addr == 0 {
0
@ -91,7 +91,8 @@ impl QcowRawFile {
/// Writes a refcount block to the file.
pub fn write_refcount_block(&mut self, offset: u64, table: &[u16]) -> io::Result<()> {
self.file.seek(SeekFrom::Start(offset))?;
let mut buffer = BufWriter::with_capacity(table.len() * size_of::<u16>(), &mut self.file);
let mut buffer = BufWriter::with_capacity(std::mem::size_of_val(table), &mut self.file);
for count in table {
buffer.write_u16::<BigEndian>(*count)?;
}