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-rw-r--r--user_call/user_io.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/user_call/user_io.c b/user_call/user_io.c
index d8f95a1..c486e46 100644
--- a/user_call/user_io.c
+++ b/user_call/user_io.c
@@ -1,4 +1,5 @@
#include <stdlib.h>
+#include <string.h>
#include <errno.h>
#include <sys/time.h>
#include <sys/types.h>