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-rw-r--r--src/basic/barrier.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/basic/barrier.c b/src/basic/barrier.c
index 0c44e47b12..cd3638b676 100644
--- a/src/basic/barrier.c
+++ b/src/basic/barrier.c
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: LGPL-2.1+ */
/***
This file is part of systemd.