#define SYSTEM_MALLOC
+/* SunOS 4.x cc <stdlib.h> declares abort and free to return int. */
+
+#ifndef __STDC__
+#define ABORT_RETURN_TYPE int
+#define FREE_RETURN_TYPE int
+#endif
+
#ifdef __GNUC__
/* We must define mkdir with this arg prototype
to match GCC's fixed stat.h. */