From: Johannes Heinz <johannes.heinz@tuwien.ac.at>
Date: Fri, 9 Jun 2023 09:25:32 +0000 (+0200)
Subject: ensure distribute_local_to_global() is called with contiguous iterators
X-Git-Tag: v9.5.0-rc1~135^2
X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=131d9cce411c556de3ec0b74bd3f4122fe5f1590;p=dealii.git

ensure distribute_local_to_global() is called with contiguous iterators
---

diff --git a/include/deal.II/dofs/dof_accessor.templates.h b/include/deal.II/dofs/dof_accessor.templates.h
index f187b3eafb..984ca09b25 100644
--- a/include/deal.II/dofs/dof_accessor.templates.h
+++ b/include/deal.II/dofs/dof_accessor.templates.h
@@ -2829,6 +2829,12 @@ DoFCellAccessor<dimension_, space_dimension_, level_dof_access>::
 
   Assert(!this->has_children(), ExcMessage("Cell must be active"));
 
+  Assert(
+    internal::ArrayViewHelper::is_contiguous(local_source_begin,
+                                             local_source_end),
+    ExcMessage(
+      "This function can not be called with iterator types that do not point to contiguous memory."));
+
   const unsigned int n_dofs = local_source_end - local_source_begin;
 
   internal::DoFAccessorImplementation::Implementation::dof_index_vector_type