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-rw-r--r--components/utilities/ulog/ulog.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/components/utilities/ulog/ulog.c b/components/utilities/ulog/ulog.c
index 4918a68339..8f8782f4c0 100644
--- a/components/utilities/ulog/ulog.c
+++ b/components/utilities/ulog/ulog.c
@@ -9,6 +9,7 @@
*/
#include <stdarg.h>
+#include <stdlib.h>
#include "ulog.h"
#include "rthw.h"