add repro case

rust/src/sans_io/read.rs

@@ -1101,4 +1101,25 @@ mod tests {
         }
         Ok(())
     }
+
+    #[test]
+    fn test_decompression_does_not_fail() {
+        let mut f = std::fs::File::open("tests/data/break_zstd_decompression.mcap")
+            .expect("failed to open file");
+        let blocksize: usize = 1024;
+        let mut reader = LinearReader::new();
+        while let Some(action) = reader.next_action() {
+            match action.expect("failed to get next action") {
+                ReadAction::GetRecord { data: _, opcode } => {
+                    print!("{},", opcode);
+                }
+                ReadAction::NeedMore(_) => {
+                    let read = f
+                        .read(reader.insert(blocksize))
+                        .expect("failed to read from file");
+                    reader.set_written(read);
+                }
+            }
+        }
+    }
 }