From 3dcdbca81faf2e6365074de9c1513c8e8ee05e29 Mon Sep 17 00:00:00 2001
From: bangerth <bangerth@0785d39b-7218-0410-832d-ea1e28bc413d>
Date: Thu, 2 May 2013 15:25:44 +0000
Subject: [PATCH] Do not use std::numeric_limits on enum types -- max() is
 always zero in that case...

git-svn-id: https://svn.dealii.org/trunk@29431 0785d39b-7218-0410-832d-ea1e28bc413d
---
 deal.II/source/fe/fe_system.cc | 33 +++++++++++++++++++++------------
 1 file changed, 21 insertions(+), 12 deletions(-)

diff --git a/deal.II/source/fe/fe_system.cc b/deal.II/source/fe/fe_system.cc
index 88b5f3666a..6bb7de8489 100644
--- a/deal.II/source/fe/fe_system.cc
+++ b/deal.II/source/fe/fe_system.cc
@@ -2677,18 +2677,27 @@ FESystem<dim,spacedim>::multiply_dof_numbers (
         summed_multiplicities += multiplicities[i];
       }
 
-  // assume maximal conformity and then take away bits
-  // as indicated by the base elements
-  typename FiniteElementData<dim>::Conformity
-    total_conformity
-    = std::numeric_limits<typename FiniteElementData<dim>::Conformity>::max();
-
-  for (unsigned int i=0; i<fes.size(); i++)
-    if (multiplicities[i]>0)
-      total_conformity =
-	typename FiniteElementData<dim>::Conformity(total_conformity
-						    &
-						    fes[i]->conforming_space);
+  // assume conformity of the first finite element and then take away
+  // bits as indicated by the base elements. if all multiplicities
+  // happen to be zero, then it doesn't matter what we set it to.
+  typename FiniteElementData<dim>::Conformity total_conformity
+    = typename FiniteElementData<dim>::Conformity();
+  {
+    unsigned int index = 0;
+    for (unsigned int index=0; index<fes.size(); ++index)
+      if (multiplicities[index]>0)
+	{
+	  total_conformity = fes[index]->conforming_space;
+	  break;
+	}
+
+    for (; index<fes.size(); ++index)
+      if (multiplicities[index]>0)
+	total_conformity =
+	  typename FiniteElementData<dim>::Conformity(total_conformity
+						      &
+						      fes[index]->conforming_space);
+  }
 
   std::vector<unsigned int> dpo;
   dpo.push_back(multiplied_dofs_per_vertex);
-- 
2.39.5