From f188271d8a541dd4faf005f93ac875bcc1289e8a Mon Sep 17 00:00:00 2001
From: Julien Schueller <schueller@phimeca.com>
Date: Mon, 17 Feb 2025 18:03:23 +0100
Subject: [PATCH] slsqp: check p>n

Closes #592
---
 src/algs/slsqp/slsqp.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/algs/slsqp/slsqp.c b/src/algs/slsqp/slsqp.c
index f572c8f1..d75f4a9b 100644
--- a/src/algs/slsqp/slsqp.c
+++ b/src/algs/slsqp/slsqp.c
@@ -2459,6 +2459,12 @@ nlopt_result nlopt_slsqp(unsigned n, nlopt_func f, void *f_data,
      unsigned max_cdim;
      int want_grad = 1;
      
+     if (p > n)
+     {
+       nlopt_stop_msg(stop, "slsqp: more equality constraints than variables");
+       ret = NLOPT_INVALID_ARGS;
+     }
+
      max_cdim = MAX2(nlopt_max_constraint_dim(m, fc),
 		    nlopt_max_constraint_dim(p, h));
      length_work(&len_w, &len_jw, mpi, pi, ni);