#include <stdarg.h>
#include <stddef.h>
+#ifndef __attribute__
+/* This feature is available in gcc versions 2.5 and later. */
+# if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 5) || __STRICT_ANSI__
+# define __attribute__(Spec) /* empty */
+# endif
+/* The __-protected variants of `format' and `printf' attributes
+ are accepted by gcc versions 2.6.4 (effectively 2.7) and later. */
+# if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 7)
+# define __format__ format
+# define __printf__ printf
+# endif
+#endif
+
/* The definition of GL_LINK_WARNING is copied here. */
#endif
+#if @GNULIB_FPRINTF_POSIX@
+# if @REPLACE_FPRINTF@
+# define fprintf rpl_fprintf
+extern int fprintf (FILE *fp, const char *format, ...)
+ __attribute__ ((__format__ (__printf__, 2, 3)));
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef fprintf
+# define fprintf \
+ (GL_LINK_WARNING ("fprintf is not always POSIX compliant - " \
+ "use gnulib module fprintf-posix for portable " \
+ "POSIX compliance"), \
+ fprintf)
+#endif
+
#if @GNULIB_VFPRINTF_POSIX@
# if @REPLACE_VFPRINTF@
# define vfprintf rpl_vfprintf
-extern int vfprintf (FILE *fp, const char *format, va_list args);
+extern int vfprintf (FILE *fp, const char *format, va_list args)
+ __attribute__ ((__format__ (__printf__, 2, 0)));
# endif
#elif defined GNULIB_POSIXCHECK
# undef vfprintf
vfprintf (s, f, a))
#endif
+#if @GNULIB_PRINTF_POSIX@
+# if @REPLACE_PRINTF@
+/* Don't break __attribute__((format(printf,M,N))). */
+# define printf __printf__
+extern int printf (const char *format, ...)
+ __attribute__ ((__format__ (__printf__, 1, 2)));
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef printf
+# define printf \
+ (GL_LINK_WARNING ("printf is not always POSIX compliant - " \
+ "use gnulib module printf-posix for portable " \
+ "POSIX compliance"), \
+ printf)
+/* Don't break __attribute__((format(printf,M,N))). */
+# define format(kind,m,n) format (__##kind##__, m, n)
+# define __format__(kind,m,n) __format__ (__##kind##__, m, n)
+# define ____printf____ __printf__
+# define ____scanf____ __scanf__
+# define ____strftime____ __strftime__
+# define ____strfmon____ __strfmon__
+#endif
+
+#if @GNULIB_VPRINTF_POSIX@
+# if @REPLACE_VPRINTF@
+# define vprintf rpl_vprintf
+extern int vprintf (const char *format, va_list args)
+ __attribute__ ((__format__ (__printf__, 1, 0)));
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef vprintf
+# define vprintf(f,a) \
+ (GL_LINK_WARNING ("vprintf is not always POSIX compliant - " \
+ "use gnulib module vprintf-posix for portable " \
+ "POSIX compliance"), \
+ vprintf (f, a))
+#endif
+
#if @GNULIB_SNPRINTF@
# if @REPLACE_SNPRINTF@
# define snprintf rpl_snprintf
# endif
# if @REPLACE_SNPRINTF@ || !@HAVE_DECL_SNPRINTF@
-extern int snprintf (char *str, size_t size, const char *format, ...);
+extern int snprintf (char *str, size_t size, const char *format, ...)
+ __attribute__ ((__format__ (__printf__, 3, 4)));
# endif
#elif defined GNULIB_POSIXCHECK
# undef snprintf
# define vsnprintf rpl_vsnprintf
# endif
# if @REPLACE_VSNPRINTF@ || !@HAVE_DECL_VSNPRINTF@
-extern int vsnprintf (char *str, size_t size, const char *format, va_list args);
+extern int vsnprintf (char *str, size_t size, const char *format, va_list args)
+ __attribute__ ((__format__ (__printf__, 3, 0)));
# endif
#elif defined GNULIB_POSIXCHECK
# undef vsnprintf
#if @GNULIB_SPRINTF_POSIX@
# if @REPLACE_SPRINTF@
# define sprintf rpl_sprintf
-extern int sprintf (char *str, const char *format, ...);
+extern int sprintf (char *str, const char *format, ...)
+ __attribute__ ((__format__ (__printf__, 2, 3)));
# endif
#elif defined GNULIB_POSIXCHECK
# undef sprintf
#if @GNULIB_VSPRINTF_POSIX@
# if @REPLACE_VSPRINTF@
# define vsprintf rpl_vsprintf
-extern int vsprintf (char *str, const char *format, va_list args);
+extern int vsprintf (char *str, const char *format, va_list args)
+ __attribute__ ((__format__ (__printf__, 2, 0)));
# endif
#elif defined GNULIB_POSIXCHECK
# undef vsprintf