diff options
| -rw-r--r-- | tvix/castore/src/refscan.rs | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/tvix/castore/src/refscan.rs b/tvix/castore/src/refscan.rs index 0b8af296bb50..8e6a81b2a4fe 100644 --- a/tvix/castore/src/refscan.rs +++ b/tvix/castore/src/refscan.rs @@ -192,7 +192,15 @@ where self: Pin<&mut Self>, cx: &mut std::task::Context<'_>, ) -> Poll<std::io::Result<&[u8]>> { - let overlap = self.scanner.pattern.longest_candidate() - 1; + #[allow(clippy::manual_saturating_arithmetic)] // for clarity + let overlap = self + .scanner + .pattern + .longest_candidate() + .checked_sub(1) + // If this overflows (longest_candidate = 0), that means there are no needles, + // so there is no need to have any overlap + .unwrap_or(0); let mut this = self.project(); // Still data in buffer if *this.consumed < this.buffer.len() { |