From 39f7b1aa8c5d0e21cc610bb0eac8497e02746495 Mon Sep 17 00:00:00 2001
From: coastalwhite <me@gburghoorn.com>
Date: Wed, 18 Sep 2024 15:10:59 +0200
Subject: [PATCH] fix: Throw error for comparison of unequal length series

---
 crates/polars-core/src/series/comparison.rs | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/crates/polars-core/src/series/comparison.rs b/crates/polars-core/src/series/comparison.rs
index 6ccb4db7c219..b632880b50d4 100644
--- a/crates/polars-core/src/series/comparison.rs
+++ b/crates/polars-core/src/series/comparison.rs
@@ -10,6 +10,8 @@ macro_rules! impl_compare {
         let (lhs, rhs) = ($self, $rhs);
         validate_types(lhs.dtype(), rhs.dtype())?;
 
+        polars_ensure!(lhs.len() == rhs.len(), ShapeMismatch: "could not compare between two series of different length ({} != {})", lhs.len(), rhs.len());
+
         #[cfg(feature = "dtype-categorical")]
         match (lhs.dtype(), rhs.dtype()) {
             (Categorical(_, _) | Enum(_, _), Categorical(_, _) | Enum(_, _)) => {