Include for size_t

require-ess/src/require.c

@@ -34,6 +34,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#include <stddef.h>
 #include <sys/stat.h>
 /* This prototype is missing in older EPICS versions */
 DBCORE_API int epicsStdCall iocshCmd(const char *cmd);