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-rw-r--r--tools/build/tests/ex/ex.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/tools/build/tests/ex/ex.c b/tools/build/tests/ex/ex.c
index 57de6074d252..3c02756ef912 100644
--- a/tools/build/tests/ex/ex.c
+++ b/tools/build/tests/ex/ex.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
int a(void);
int b(void);