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-rw-r--r--tvix/store/src/blobservice/dumb_seeker.rs12
1 files changed, 11 insertions, 1 deletions
diff --git a/tvix/store/src/blobservice/dumb_seeker.rs b/tvix/store/src/blobservice/dumb_seeker.rs
index 5548ea0bd33d..8629394d21bc 100644
--- a/tvix/store/src/blobservice/dumb_seeker.rs
+++ b/tvix/store/src/blobservice/dumb_seeker.rs
@@ -80,7 +80,17 @@ impl<R: io::Read> io::Seek for DumbSeeker<R> {
                 Err(e) => return Err(e),
             }
         }
-        debug_assert_eq!(bytes_to_skip, bytes_skipped);
+
+        // This will fail when seeking past the end of self.r
+        if bytes_to_skip != bytes_skipped {
+            return Err(std::io::Error::new(
+                std::io::ErrorKind::UnexpectedEof,
+                format!(
+                    "tried to skip {} bytes, but only was able to skip {} until reaching EOF",
+                    bytes_to_skip, bytes_skipped
+                ),
+            ));
+        }
 
         self.pos = absolute_offset;