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-rw-r--r--usr.bin/m4/trace.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/usr.bin/m4/trace.c b/usr.bin/m4/trace.c
index 90e913d..cce4c79 100644
--- a/usr.bin/m4/trace.c
+++ b/usr.bin/m4/trace.c
@@ -1,5 +1,7 @@
/* $OpenBSD: trace.c,v 1.16 2010/09/07 19:58:09 marco Exp $ */
/*
+ * SPDX-License-Identifier: BSD-2-Clause
+ *
* Copyright (c) 2001 Marc Espie.
*
* Redistribution and use in source and binary forms, with or without
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