From 75ce5421464a2dc5bf41418e867de33fbacce83e Mon Sep 17 00:00:00 2001
From: Timo Heister <timo.heister@gmail.com>
Date: Sun, 5 Jul 2015 06:00:05 -0400
Subject: [PATCH] remove warning

gcc gives the nonsensical warning "comparison of unsigned expression < 0
is always false". Work around this.
---
 source/grid/grid_generator.cc | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/source/grid/grid_generator.cc b/source/grid/grid_generator.cc
index 65ee3b54be..25989ddb94 100644
--- a/source/grid/grid_generator.cc
+++ b/source/grid/grid_generator.cc
@@ -449,8 +449,8 @@ namespace GridGenerator
     if (dim>2)
       {
         // In 3D, we have some more edges to deal with
-        for (unsigned int i=0; i<dim-1; ++i)
-          points.push_back(0.5*(points[i]+points[i+2]));
+        for (unsigned int i=1; i<dim; ++i)
+          points.push_back(0.5*(points[i-1]+points[i+1]));
         // And we need face midpoints
         for (unsigned int i=0; i<=dim; ++i)
           points.push_back(1./3.*
-- 
2.39.5