From: Wolfgang Bangerth <bangerth@colostate.edu>
Date: Thu, 2 Sep 2021 19:26:44 +0000 (-0600)
Subject: Add a static_assert to DataOutStack.
X-Git-Tag: v9.4.0-rc1~1008^2
X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b8cd4146ef1a09c62fa1550d6752f6485d4ccf38;p=dealii.git

Add a static_assert to DataOutStack.
---

diff --git a/include/deal.II/numerics/data_out_stack.h b/include/deal.II/numerics/data_out_stack.h
index 9a64917597..ea5c5f1881 100644
--- a/include/deal.II/numerics/data_out_stack.h
+++ b/include/deal.II/numerics/data_out_stack.h
@@ -134,7 +134,12 @@ template <int dim, int spacedim>
 class DataOutStack<dim, spacedim, void>
   : public DataOutInterface<dim + 1, spacedim + 1>
 {
-  static_assert(dim == spacedim, "Not implemented for dim != spacedim.");
+  static_assert(dim < 3,
+                "Because this class stacks data into the (dim+1)st "
+                "dimension to create graphical output, it only works for "
+                "dim<3.");
+  static_assert(dim == spacedim,
+                "This class is not implemented for dim != spacedim.");
 
 public:
   /**