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--- a/src/common/unacpp.cpp
+++ b/src/common/unacpp.cpp
@@ -121,6 +121,8 @@
 
 #else // not testing
 
+#include <stdio.h>
+#include <stdlib.h>
 #include <unistd.h>
 #include <fcntl.h>
 #include <errno.h>