From: Timo Heister <timo.heister@gmail.com>
Date: Mon, 16 Nov 2015 13:36:03 +0000 (-0500)
Subject: fix trilinos warning
X-Git-Tag: v8.4.0-rc2~226^2
X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=refs%2Fpull%2F1874%2Fhead;p=dealii.git

fix trilinos warning
---

diff --git a/source/lac/trilinos_precondition_ml.cc b/source/lac/trilinos_precondition_ml.cc
index df79ff867b..0b7d96eee9 100644
--- a/source/lac/trilinos_precondition_ml.cc
+++ b/source/lac/trilinos_precondition_ml.cc
@@ -183,6 +183,7 @@ namespace TrilinosWrappers
     if (constant_modes_dimension > 0)
       {
         const size_type global_size = n_global_rows(matrix);
+        (void)global_length; // work around compiler warning about unused function in release mode
         Assert (global_size ==
                 static_cast<size_type>(global_length(distributed_constant_modes)),
                 ExcDimensionMismatch(global_size,