From: Wolfgang Bangerth <bangerth@colostate.edu>
Date: Mon, 12 Feb 2024 20:54:08 +0000 (-0700)
Subject: Add an assertion.
X-Git-Tag: relicensing~40^2~2
X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=cd2e8f9a54a9efb7b4d2fe141d02bd82d12fbfbd;p=dealii.git

Add an assertion.
---

diff --git a/include/deal.II/lac/trilinos_tpetra_vector.h b/include/deal.II/lac/trilinos_tpetra_vector.h
index c5d134e2b5..67bb9c42ee 100644
--- a/include/deal.II/lac/trilinos_tpetra_vector.h
+++ b/include/deal.II/lac/trilinos_tpetra_vector.h
@@ -1003,6 +1003,10 @@ namespace LinearAlgebra
                                      const size_type *indices,
                                      const Number    *values)
     {
+      // if we have ghost values, do not allow
+      // writing to this vector at all.
+      Assert(!has_ghost_elements(), ExcGhostsPresent());
+
       // First create an alias for the type of a view into our vectors.
       // The actual type is declared through several re-directions in
       // Tpetra, so instead of spelling it out, we get it via decltype: