From: Martin Kronbichler <kronbichler@lnm.mw.tum.de>
Date: Fri, 18 May 2018 13:13:47 +0000 (+0200)
Subject: Fix out-of-range access with GLIBCXX_DEBUG.
X-Git-Tag: v9.1.0-rc1~1124^2~4
X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3a0e82ad933acfa9c77d0d58ac4f581585b79798;p=dealii.git

Fix out-of-range access with GLIBCXX_DEBUG.
---

diff --git a/include/deal.II/matrix_free/matrix_free.templates.h b/include/deal.II/matrix_free/matrix_free.templates.h
index 5a53486862..b70ca7b93f 100644
--- a/include/deal.II/matrix_free/matrix_free.templates.h
+++ b/include/deal.II/matrix_free/matrix_free.templates.h
@@ -1174,7 +1174,8 @@ void MatrixFree<dim,Number>::initialize_indices
 
       std::vector<bool> hard_vectorization_boundary(task_info.face_partition_data.size(),
                                                     false);
-      if (task_info.scheme == internal::MatrixFreeFunctions::TaskInfo::none)
+      if (task_info.scheme == internal::MatrixFreeFunctions::TaskInfo::none &&
+          task_info.partition_row_index[2] < task_info.face_partition_data.size())
         hard_vectorization_boundary[task_info.partition_row_index[2]] = true;
       else
         for (unsigned int i=0; i<hard_vectorization_boundary.size(); ++i)