From: Wolfgang Bangerth <bangerth@colostate.edu>
Date: Wed, 28 Aug 2024 15:51:05 +0000 (-0600)
Subject: Reserve the necessary amount of space.
X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=refs%2Fpull%2F17624%2Fhead;p=dealii.git

Reserve the necessary amount of space.
---

diff --git a/include/deal.II/lac/affine_constraints.templates.h b/include/deal.II/lac/affine_constraints.templates.h
index d9ca0f1ff2..b95bf0c216 100644
--- a/include/deal.II/lac/affine_constraints.templates.h
+++ b/include/deal.II/lac/affine_constraints.templates.h
@@ -446,6 +446,7 @@ namespace internal
     IndexSet constrained_indices(locally_owned_dofs.size());
 
     std::vector<types::global_dof_index> constrained_indices_temp;
+    constrained_indices_temp.reserve(constraints_in.n_constraints());
     for (const auto &line : constraints_in.get_lines())
       constrained_indices_temp.push_back(line.index);
     std::sort(constrained_indices_temp.begin(), constrained_indices_temp.end());