From 7ff653a4c4cabf33676aed849ee8242022e3fa04 Mon Sep 17 00:00:00 2001
From: Wolfgang Bangerth <bangerth@colostate.edu>
Date: Fri, 23 Apr 2021 09:49:32 -0600
Subject: [PATCH] Fix a static_assert to actually make sense.

More specifically, there is a specialization Tensor<0,dim,Number> so we should
reallly never get here with rank==0.
---
 include/deal.II/base/tensor.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/deal.II/base/tensor.h b/include/deal.II/base/tensor.h
index dfbbd3c510..f5894dc944 100644
--- a/include/deal.II/base/tensor.h
+++ b/include/deal.II/base/tensor.h
@@ -449,7 +449,7 @@ template <int rank_, int dim, typename Number>
 class Tensor
 {
 public:
-  static_assert(rank_ >= 0,
+  static_assert(rank_ >= 1,
                 "Tensors must have a rank greater than or equal to one.");
   static_assert(dim >= 0,
                 "Tensors must have a dimension greater than or equal to one.");
-- 
2.39.5