fix slice

crates/polars-core/src/frame/mod.rs

@@ -326,6 +326,8 @@ impl DataFrame {
             .filter(|l| *l != 1)
             .max()
             .unwrap_or(1);
+
+        dbg!(broadcast_len);
 
         for col in &mut columns {
             // Length not equal to the broadcast len, needs broadcast or is an error.
@@ -343,8 +345,12 @@ impl DataFrame {
             }
         }
 
+        dbg!(&columns);
+
         let length = if columns.is_empty() { 0 } else { broadcast_len };
 
+        dbg!(length);
+
         Ok(unsafe { DataFrame::new_no_checks(length, columns) })
     }
 
@@ -2479,6 +2485,7 @@ impl DataFrame {
         let height = if let Some(fst) = col.first() {
             fst.len()
         } else {
+            let (_, length) = slice_offsets(offset, length, self.height());
             length
         };