From 134af1c5279d0b75479cbb199e8fd932c292b9bd Mon Sep 17 00:00:00 2001
From: Jishnu Bhattacharya <jishnub.github@gmail.com>
Date: Wed, 30 Apr 2025 23:01:40 +0530
Subject: [PATCH] Require square matrices in UpperHessenberg

---
 src/hessenberg.jl | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/hessenberg.jl b/src/hessenberg.jl
index 056b97e3..df7a075e 100644
--- a/src/hessenberg.jl
+++ b/src/hessenberg.jl
@@ -46,6 +46,7 @@ struct UpperHessenberg{T,S<:AbstractMatrix{T}} <: AbstractMatrix{T}
 
     function UpperHessenberg{T,S}(data) where {T,S<:AbstractMatrix{T}}
         require_one_based_indexing(data)
+        checksquare(data)
         new{T,S}(data)
     end
 end