From: Marc Fehling <mafehling.git@gmail.com>
Date: Fri, 20 May 2022 04:06:09 +0000 (-0600)
Subject: Merge pull request #13762 from bangerth/once_flag
X-Git-Tag: v9.4.0-rc1~192
X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9332e8610e524728e02c33b1d6d8cbf6da9b1284;p=dealii.git

Merge pull request #13762 from bangerth/once_flag

Use std::call_once() instead of hand-rolling a solution.
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9332e8610e524728e02c33b1d6d8cbf6da9b1284