From: Wolfgang Bangerth <bangerth@colostate.edu>
Date: Thu, 8 Jun 2023 21:04:18 +0000 (-0600)
Subject: Enable make_array_view() also for C++20-style contiguous iterators.
X-Git-Tag: v9.5.0-rc1~132^2~1
X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=072f2fe9262449b7a6152117beaa8d41e38a3491;p=dealii.git

Enable make_array_view() also for C++20-style contiguous iterators.
---

diff --git a/include/deal.II/base/array_view.h b/include/deal.II/base/array_view.h
index 67e69e6c2d..568ee71b12 100644
--- a/include/deal.II/base/array_view.h
+++ b/include/deal.II/base/array_view.h
@@ -705,7 +705,13 @@ make_array_view(const Iterator begin, const Iterator end)
 {
   static_assert(
     std::is_same<typename std::iterator_traits<Iterator>::iterator_category,
-                 typename std::random_access_iterator_tag>::value,
+                 typename std::random_access_iterator_tag>::value
+#ifdef DEAL_II_HAVE_CXX20
+      ||
+      std::is_same<typename std::iterator_traits<Iterator>::iterator_category,
+                   typename std::contiguous_iterator_tag>::value
+#endif
+    ,
     "The provided iterator needs to be a random access iterator.");
   Assert(begin <= end,
          ExcMessage(