From 4d2587c26136952ba2b2c42d7b7e4a68571492ea Mon Sep 17 00:00:00 2001
From: Daniel Arndt <arndtd@ornl.gov>
Date: Tue, 13 Jun 2023 09:01:19 -0400
Subject: [PATCH] Fox unused-but-set-variable warning

---
 source/opencascade/utilities.cc | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/source/opencascade/utilities.cc b/source/opencascade/utilities.cc
index 6b8b7a19e0..cd522b7028 100644
--- a/source/opencascade/utilities.cc
+++ b/source/opencascade/utilities.cc
@@ -710,7 +710,11 @@ namespace OpenCASCADE
     double minDistance = 1e7;
     gp_Pnt tmp_proj(0.0, 0.0, 0.0);
 
-    unsigned int counter      = 0;
+#  ifdef DEAL_II_HAVE_CXX17
+    [[maybe_unused]] unsigned int counter = 0;
+#  else
+    unsigned int     counter = 0;
+#  endif
     unsigned int face_counter = 0;
 
     TopoDS_Shape out_shape;
-- 
2.39.5