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chore: String impl - copy_into_slice #162

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Merged
cpubot merged 1 commit into from
Feb 9, 2026
Merged

chore: String impl - copy_into_slice #162

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6 changes: 4 additions & 2 deletions wincode/src/schema/impls.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -1039,8 +1039,10 @@ unsafe impl<'de, C: Config> SchemaRead<'de, C> for String {
#[inline]
fn read(mut reader: impl Reader<'de>, dst: &mut MaybeUninit<Self::Dst>) -> ReadResult<()> {
let len = C::LengthEncoding::read_prealloc_check::<u8>(&mut reader)?;
let bytes = reader.fill_exact(len)?.to_vec();
unsafe { reader.consume_unchecked(len) };
let mut bytes: Vec<u8> = Vec::with_capacity(len);
reader.copy_into_slice(bytes.spare_capacity_mut())?;
// SAFETY: `copy_into_slice` ensures we fill the entire `bytes.spare_capacity_mut()` slice.
unsafe { bytes.set_len(len) };
match String::from_utf8(bytes) {
Ok(s) => {
dst.write(s);
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