diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/bytes_mut.rs | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/src/bytes_mut.rs b/src/bytes_mut.rs index 0ea0272..35e1900 100644 --- a/src/bytes_mut.rs +++ b/src/bytes_mut.rs @@ -1066,6 +1066,14 @@ impl Buf for BytesMut { #[inline] fn advance(&mut self, cnt: usize) { + // Advancing by the length is the same as resetting the length to 0, + // except this way we get to reuse the full capacity. + if cnt == self.remaining() { + // SAFETY: Zero is not greater than the capacity. + unsafe { self.set_len(0) }; + return; + } + assert!( cnt <= self.remaining(), "cannot advance past `remaining`: {:?} <= {:?}", |