From a5665eb7945bd77846b6f25ff3bfdfbdfc20f072 Mon Sep 17 00:00:00 2001
From: Nao Pross <np@0hm.ch>
Date: Wed, 8 May 2024 12:10:35 +0200
Subject: Raise error when SOS problem is unconstrained

---
 sumofsquares/cvxopt.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/sumofsquares/cvxopt.py b/sumofsquares/cvxopt.py
index 12f8e44..4cd803c 100644
--- a/sumofsquares/cvxopt.py
+++ b/sumofsquares/cvxopt.py
@@ -141,6 +141,9 @@ def solve_sos_cone(prob: Problem, verbose: bool = False, *args, **kwargs) -> tup
 
     cvxopt.solvers.options['show_progress'] = verbose
 
+    if not any((G, h, A, b)):
+        raise ValueError("Optimization problem is unconstrained!")
+
     if is_qp:
         P = cvxopt.matrix(P)
         info = cvxopt.solvers.coneqp(P=P, q=q, G=G, h=h, A=A, b=b,
-- 
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