From 9101e79aa5b97ad2bc524f122027299b9fa97d9f Mon Sep 17 00:00:00 2001
From: Shahram Najm <masn@ecmwf.int>
Date: Fri, 28 Oct 2022 13:24:17 +0100
Subject: [PATCH] C++ compilation

---
 tools/grib_to_netcdf.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tools/grib_to_netcdf.c b/tools/grib_to_netcdf.c
index 3b2fdb3e7..e20b74213 100644
--- a/tools/grib_to_netcdf.c
+++ b/tools/grib_to_netcdf.c
@@ -1657,6 +1657,7 @@ static void cube_indexes(
         }
         indexes[i] = j;
     }
+    (void)index;
 }
 
 /*********************************/