#include <stdio.h>
+#if GNULIB_FOPEN_SAFER
FILE *fopen_safer (char const *, char const *);
+#endif
+
+#if GNULIB_FREOPEN_SAFER
+FILE *freopen_safer (char const *, char const *, FILE *);
+#endif
+
+#if GNULIB_POPEN_SAFER
FILE *popen_safer (char const *, char const *);
+#endif
+
+#if GNULIB_TMPFILE_SAFER
FILE *tmpfile_safer (void);
+#endif