From: Wolfgang Bangerth <bangerth@colostate.edu>
Date: Sun, 9 Jan 2022 19:02:22 +0000 (-0700)
Subject: Augment the documentation of a member variable.
X-Git-Tag: v9.4.0-rc1~597^2~6
X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6d0c5eb0507399603dce625025d2400831c8dffa;p=dealii.git

Augment the documentation of a member variable.
---

diff --git a/include/deal.II/base/mpi_consensus_algorithms.h b/include/deal.II/base/mpi_consensus_algorithms.h
index 814bc1610e..62beefe7ef 100644
--- a/include/deal.II/base/mpi_consensus_algorithms.h
+++ b/include/deal.II/base/mpi_consensus_algorithms.h
@@ -329,7 +329,11 @@ namespace Utilities
         std::vector<MPI_Request> recv_requests;
 
         /**
-         * Buffers for sending answers to requests.
+         * Buffers for sending answers to requests. We use a vector of
+         * pointers because that guarantees that the buffers themselves
+         * are newer moved around in memory, even if the vector is
+         * resized and consequently its elements (the pointers) are moved
+         * around.
          */
         std::vector<std::unique_ptr<std::vector<T2>>> request_buffers;