Sync with the latest Gnulib code (177f525)

Signed-off-by: Thomas Guyot-Sionnest <dermoth@aei.ca>

1 files changed, 901 insertions, 368 deletions

diff --git a/gl/stdio.in.h b/gl/stdio.in.h
index cb273d7..dcb8ee5 100644
--- a/gl/stdio.in.h
+++ b/gl/stdio.in.h
@@ -1,6 +1,6 @@
 /* A GNU-like <stdio.h>.
 
-   Copyright (C) 2004, 2007-2008 Free Software Foundation, Inc.
+   Copyright (C) 2004, 2007-2010 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -36,489 +36,1022 @@
 #ifndef _GL_STDIO_H
 #define _GL_STDIO_H
 
+/* Get va_list.  Needed on many systems, including glibc 2.8.  */
 #include <stdarg.h>
+
 #include <stddef.h>
 
-#if (@GNULIB_FSEEKO@ && @REPLACE_FSEEKO@) \
-  || (@GNULIB_FTELLO@ && @REPLACE_FTELLO@) \
-  || (@GNULIB_GETDELIM@ && !@HAVE_DECL_GETDELIM@) \
-  || (@GNULIB_GETLINE@ && (!@HAVE_DECL_GETLINE@ || @REPLACE_GETLINE@))
-/* Get off_t and ssize_t.  */
-# include <sys/types.h>
-#endif
+/* Get off_t and ssize_t.  Needed on many systems, including glibc 2.8.  */
+#include <sys/types.h>
 
 #ifndef __attribute__
-/* This feature is available in gcc versions 2.5 and later.  */
-# if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 5)
-#  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.  */
+/* The __attribute__ feature is available in gcc versions 2.5 and later.
+   The __-protected variants of the attributes 'format' and 'printf' are
+   accepted by gcc versions 2.6.4 (effectively 2.7) and later.
+   We enable __attribute__ only if these are supported too, because
+   gnulib and libintl do '#define printf __printf__' when they override
+   the 'printf' function.  */
 # if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 7)
-#  define __format__ format
-#  define __printf__ printf
+#  define __attribute__(Spec)   /* empty */
 # endif
 #endif
 
 
-/* The definition of GL_LINK_WARNING is copied here.  */
+/* The definitions of _GL_FUNCDECL_RPL etc. are copied here.  */
 
+/* The definition of _GL_ARG_NONNULL is copied here.  */
 
-#ifdef __cplusplus
-extern "C" {
-#endif
+/* The definition of _GL_WARN_ON_USE is copied here.  */
 
 
-#if @GNULIB_FPRINTF_POSIX@
-# if @REPLACE_FPRINTF@
-#  define fprintf rpl_fprintf
-extern int fprintf (FILE *fp, const char *format, ...)
-       __attribute__ ((__format__ (__printf__, 2, 3)));
+#if @GNULIB_DPRINTF@
+# if @REPLACE_DPRINTF@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   define dprintf rpl_dprintf
+#  endif
+_GL_FUNCDECL_RPL (dprintf, int, (int fd, const char *format, ...)
+                                __attribute__ ((__format__ (__printf__, 2, 3)))
+                                _GL_ARG_NONNULL ((2)));
+_GL_CXXALIAS_RPL (dprintf, int, (int fd, const char *format, ...));
+# else
+#  if !@HAVE_DPRINTF@
+_GL_FUNCDECL_SYS (dprintf, int, (int fd, const char *format, ...)
+                                __attribute__ ((__format__ (__printf__, 2, 3)))
+                                _GL_ARG_NONNULL ((2)));
+#  endif
+_GL_CXXALIAS_SYS (dprintf, int, (int fd, const char *format, ...));
 # endif
-#elif @GNULIB_FPRINTF@ && @REPLACE_STDIO_WRITE_FUNCS@ && @GNULIB_STDIO_H_SIGPIPE@
-# define fprintf rpl_fprintf
-extern int fprintf (FILE *fp, const char *format, ...)
-       __attribute__ ((__format__ (__printf__, 2, 3)));
+_GL_CXXALIASWARN (dprintf);
 #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)
-       __attribute__ ((__format__ (__printf__, 2, 0)));
-# endif
-#elif @GNULIB_VFPRINTF@ && @REPLACE_STDIO_WRITE_FUNCS@ && @GNULIB_STDIO_H_SIGPIPE@
-# define vfprintf rpl_vfprintf
-extern int vfprintf (FILE *fp, const char *format, va_list args)
-       __attribute__ ((__format__ (__printf__, 2, 0)));
+# undef dprintf
+# if HAVE_RAW_DECL_DPRINTF
+_GL_WARN_ON_USE (dprintf, "dprintf is unportable - "
+                 "use gnulib module dprintf for portability");
+# endif
+#endif
+
+#if @GNULIB_FCLOSE@
+/* Close STREAM and its underlying file descriptor.  */
+# if @REPLACE_FCLOSE@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   define fclose rpl_fclose
+#  endif
+_GL_FUNCDECL_RPL (fclose, int, (FILE *stream) _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (fclose, int, (FILE *stream));
+# else
+_GL_CXXALIAS_SYS (fclose, int, (FILE *stream));
+# endif
+_GL_CXXALIASWARN (fclose);
 #elif defined GNULIB_POSIXCHECK
-# undef vfprintf
-# define vfprintf(s,f,a) \
-    (GL_LINK_WARNING ("vfprintf is not always POSIX compliant - " \
-                      "use gnulib module vfprintf-posix for portable " \
-                      "POSIX compliance"), \
-     vfprintf (s, f, a))
+# undef fclose
+/* Assume fclose is always declared.  */
+_GL_WARN_ON_USE (fclose, "fclose is not always POSIX compliant - "
+                 "use gnulib module fclose for portable POSIX compliance");
 #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)));
+#if @GNULIB_FFLUSH@
+/* Flush all pending data on STREAM according to POSIX rules.  Both
+   output and seekable input streams are supported.
+   Note! LOSS OF DATA can occur if fflush is applied on an input stream
+   that is _not_seekable_ or on an update stream that is _not_seekable_
+   and in which the most recent operation was input.  Seekability can
+   be tested with lseek(fileno(fp),0,SEEK_CUR).  */
+# if @REPLACE_FFLUSH@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   define fflush rpl_fflush
+#  endif
+_GL_FUNCDECL_RPL (fflush, int, (FILE *gl_stream));
+_GL_CXXALIAS_RPL (fflush, int, (FILE *gl_stream));
+# else
+_GL_CXXALIAS_SYS (fflush, int, (FILE *gl_stream));
 # endif
-#elif @GNULIB_PRINTF@ && @REPLACE_STDIO_WRITE_FUNCS@ && @GNULIB_STDIO_H_SIGPIPE@
-/* Don't break __attribute__((format(printf,M,N))).  */
-# define printf __printf__
-extern int printf (const char *format, ...)
-       __attribute__ ((__format__ (__printf__, 1, 2)));
+_GL_CXXALIASWARN (fflush);
 #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 @GNULIB_VPRINTF@ && @REPLACE_STDIO_WRITE_FUNCS@ && @GNULIB_STDIO_H_SIGPIPE@
-# define vprintf rpl_vprintf
-extern int vprintf (const char *format, va_list args)
-       __attribute__ ((__format__ (__printf__, 1, 0)));
+# undef fflush
+/* Assume fflush is always declared.  */
+_GL_WARN_ON_USE (fflush, "fflush is not always POSIX compliant - "
+                 "use gnulib module fflush for portable POSIX compliance");
+#endif
+
+/* It is very rare that the developer ever has full control of stdin,
+   so any use of gets warrants an unconditional warning.  Assume it is
+   always declared, since it is required by C89.  */
+#undef gets
+_GL_WARN_ON_USE (gets, "gets is a security hole - use fgets instead");
+
+#if @GNULIB_FOPEN@
+# if @REPLACE_FOPEN@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef fopen
+#   define fopen rpl_fopen
+#  endif
+_GL_FUNCDECL_RPL (fopen, FILE *, (const char *filename, const char *mode)
+                                 _GL_ARG_NONNULL ((1, 2)));
+_GL_CXXALIAS_RPL (fopen, FILE *, (const char *filename, const char *mode));
+# else
+_GL_CXXALIAS_SYS (fopen, FILE *, (const char *filename, const char *mode));
+# endif
+_GL_CXXALIASWARN (fopen);
 #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))
+# undef fopen
+/* Assume fopen is always declared.  */
+_GL_WARN_ON_USE (fopen, "fopen on Win32 platforms is not POSIX compatible - "
+                 "use gnulib module fopen for portability");
 #endif
 
-#if @GNULIB_SNPRINTF@
-# if @REPLACE_SNPRINTF@
-#  define snprintf rpl_snprintf
+#if @GNULIB_FPRINTF_POSIX@ || @GNULIB_FPRINTF@
+# if (@GNULIB_FPRINTF_POSIX@ && @REPLACE_FPRINTF@) \
+     || (@GNULIB_FPRINTF@ && @REPLACE_STDIO_WRITE_FUNCS@ && @GNULIB_STDIO_H_SIGPIPE@)
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   define fprintf rpl_fprintf
+#  endif
+#  define GNULIB_overrides_fprintf 1
+_GL_FUNCDECL_RPL (fprintf, int, (FILE *fp, const char *format, ...)
+                                __attribute__ ((__format__ (__printf__, 2, 3)))
+                                _GL_ARG_NONNULL ((1, 2)));
+_GL_CXXALIAS_RPL (fprintf, int, (FILE *fp, const char *format, ...));
+# else
+_GL_CXXALIAS_SYS (fprintf, int, (FILE *fp, const char *format, ...));
+# endif
+_GL_CXXALIASWARN (fprintf);
+#endif
+#if !@GNULIB_FPRINTF_POSIX@ && defined GNULIB_POSIXCHECK
+# if !GNULIB_overrides_fprintf
+#  undef fprintf
 # endif
-# if @REPLACE_SNPRINTF@ || !@HAVE_DECL_SNPRINTF@
-extern int snprintf (char *str, size_t size, const char *format, ...)
-       __attribute__ ((__format__ (__printf__, 3, 4)));
+/* Assume fprintf is always declared.  */
+_GL_WARN_ON_USE (fprintf, "fprintf is not always POSIX compliant - "
+                 "use gnulib module fprintf-posix for portable "
+                 "POSIX compliance");
+#endif
+
+#if @GNULIB_FPURGE@
+/* Discard all pending buffered I/O data on STREAM.
+   STREAM must not be wide-character oriented.
+   When discarding pending output, the file position is set back to where it
+   was before the write calls.  When discarding pending input, the file
+   position is advanced to match the end of the previously read input.
+   Return 0 if successful.  Upon error, return -1 and set errno.  */
+# if @REPLACE_FPURGE@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   define fpurge rpl_fpurge
+#  endif
+_GL_FUNCDECL_RPL (fpurge, int, (FILE *gl_stream) _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (fpurge, int, (FILE *gl_stream));
+# else
+#  if !@HAVE_DECL_FPURGE@
+_GL_FUNCDECL_SYS (fpurge, int, (FILE *gl_stream) _GL_ARG_NONNULL ((1)));
+#  endif
+_GL_CXXALIAS_SYS (fpurge, int, (FILE *gl_stream));
 # endif
+_GL_CXXALIASWARN (fpurge);
 #elif defined GNULIB_POSIXCHECK
-# undef snprintf
-# define snprintf \
-    (GL_LINK_WARNING ("snprintf is unportable - " \
-                      "use gnulib module snprintf for portability"), \
-     snprintf)
+# undef fpurge
+# if HAVE_RAW_DECL_FPURGE
+_GL_WARN_ON_USE (fpurge, "fpurge is not always present - "
+                 "use gnulib module fpurge for portability");
+# endif
 #endif
 
-#if @GNULIB_VSNPRINTF@
-# if @REPLACE_VSNPRINTF@
-#  define vsnprintf rpl_vsnprintf
+#if @GNULIB_FPUTC@
+# if @REPLACE_STDIO_WRITE_FUNCS@ && @GNULIB_STDIO_H_SIGPIPE@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef fputc
+#   define fputc rpl_fputc
+#  endif
+_GL_FUNCDECL_RPL (fputc, int, (int c, FILE *stream) _GL_ARG_NONNULL ((2)));
+_GL_CXXALIAS_RPL (fputc, int, (int c, FILE *stream));
+# else
+_GL_CXXALIAS_SYS (fputc, int, (int c, FILE *stream));
 # endif
-# if @REPLACE_VSNPRINTF@ || !@HAVE_DECL_VSNPRINTF@
-extern int vsnprintf (char *str, size_t size, const char *format, va_list args)
-       __attribute__ ((__format__ (__printf__, 3, 0)));
+_GL_CXXALIASWARN (fputc);
+#endif
+
+#if @GNULIB_FPUTS@
+# if @REPLACE_STDIO_WRITE_FUNCS@ && @GNULIB_STDIO_H_SIGPIPE@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef fputs
+#   define fputs rpl_fputs
+#  endif
+_GL_FUNCDECL_RPL (fputs, int, (const char *string, FILE *stream)
+                              _GL_ARG_NONNULL ((1, 2)));
+_GL_CXXALIAS_RPL (fputs, int, (const char *string, FILE *stream));
+# else
+_GL_CXXALIAS_SYS (fputs, int, (const char *string, FILE *stream));
 # endif
-#elif defined GNULIB_POSIXCHECK
-# undef vsnprintf
-# define vsnprintf(b,s,f,a) \
-    (GL_LINK_WARNING ("vsnprintf is unportable - " \
-                      "use gnulib module vsnprintf for portability"), \
-     vsnprintf (b, s, f, a))
+_GL_CXXALIASWARN (fputs);
 #endif
 
-#if @GNULIB_SPRINTF_POSIX@
-# if @REPLACE_SPRINTF@
-#  define sprintf rpl_sprintf
-extern int sprintf (char *str, const char *format, ...)
-       __attribute__ ((__format__ (__printf__, 2, 3)));
+#if @GNULIB_FREOPEN@
+# if @REPLACE_FREOPEN@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef freopen
+#   define freopen rpl_freopen
+#  endif
+_GL_FUNCDECL_RPL (freopen, FILE *,
+                  (const char *filename, const char *mode, FILE *stream)
+                  _GL_ARG_NONNULL ((2, 3)));
+_GL_CXXALIAS_RPL (freopen, FILE *,
+                  (const char *filename, const char *mode, FILE *stream));
+# else
+_GL_CXXALIAS_SYS (freopen, FILE *,
+                  (const char *filename, const char *mode, FILE *stream));
 # endif
+_GL_CXXALIASWARN (freopen);
 #elif defined GNULIB_POSIXCHECK
-# undef sprintf
-# define sprintf \
-    (GL_LINK_WARNING ("sprintf is not always POSIX compliant - " \
-                      "use gnulib module sprintf-posix for portable " \
-                      "POSIX compliance"), \
-     sprintf)
+# undef freopen
+/* Assume freopen is always declared.  */
+_GL_WARN_ON_USE (freopen, "freopen on Win32 platforms is not POSIX compatible - "
+                 "use gnulib module freopen for portability");
 #endif
 
-#if @GNULIB_VSPRINTF_POSIX@
-# if @REPLACE_VSPRINTF@
-#  define vsprintf rpl_vsprintf
-extern int vsprintf (char *str, const char *format, va_list args)
-       __attribute__ ((__format__ (__printf__, 2, 0)));
+
+/* Set up the following warnings, based on which modules are in use.
+   GNU Coding Standards discourage the use of fseek, since it imposes
+   an arbitrary limitation on some 32-bit hosts.  Remember that the
+   fseek module depends on the fseeko module, so we only have three
+   cases to consider:
+
+   1. The developer is not using either module.  Issue a warning under
+   GNULIB_POSIXCHECK for both functions, to remind them that both
+   functions have bugs on some systems.  _GL_NO_LARGE_FILES has no
+   impact on this warning.
+
+   2. The developer is using both modules.  They may be unaware of the
+   arbitrary limitations of fseek, so issue a warning under
+   GNULIB_POSIXCHECK.  On the other hand, they may be using both
+   modules intentionally, so the developer can define
+   _GL_NO_LARGE_FILES in the compilation units where the use of fseek
+   is safe, to silence the warning.
+
+   3. The developer is using the fseeko module, but not fseek.  Gnulib
+   guarantees that fseek will still work around platform bugs in that
+   case, but we presume that the developer is aware of the pitfalls of
+   fseek and was trying to avoid it, so issue a warning even when
+   GNULIB_POSIXCHECK is undefined.  Again, _GL_NO_LARGE_FILES can be
+   defined to silence the warning in particular compilation units.
+   In C++ compilations with GNULIB_NAMESPACE, in order to avoid that
+   fseek gets defined as a macro, it is recommended that the developer
+   uses the fseek module, even if he is not calling the fseek function.
+
+   Most gnulib clients that perform stream operations should fall into
+   category 3.  */
+
+#if @GNULIB_FSEEK@
+# if defined GNULIB_POSIXCHECK && !defined _GL_NO_LARGE_FILES
+#  define _GL_FSEEK_WARN /* Category 2, above.  */
+#  undef fseek
+# endif
+# if @REPLACE_FSEEK@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef fseek
+#   define fseek rpl_fseek
+#  endif
+_GL_FUNCDECL_RPL (fseek, int, (FILE *fp, long offset, int whence)
+                              _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (fseek, int, (FILE *fp, long offset, int whence));
+# else
+_GL_CXXALIAS_SYS (fseek, int, (FILE *fp, long offset, int whence));
+# endif
+_GL_CXXALIASWARN (fseek);
+#endif
+
+#if @GNULIB_FSEEKO@
+# if !@GNULIB_FSEEK@ && !defined _GL_NO_LARGE_FILES
+#  define _GL_FSEEK_WARN /* Category 3, above.  */
+#  undef fseek
+# endif
+# if @REPLACE_FSEEKO@
+/* Provide an fseeko function that is aware of a preceding fflush(), and which
+   detects pipes.  */
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef fseeko
+#   define fseeko rpl_fseeko
+#  endif
+_GL_FUNCDECL_RPL (fseeko, int, (FILE *fp, off_t offset, int whence)
+                               _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (fseeko, int, (FILE *fp, off_t offset, int whence));
+# else
+#  if ! @HAVE_FSEEKO@
+_GL_FUNCDECL_SYS (fseeko, int, (FILE *fp, off_t offset, int whence)
+                               _GL_ARG_NONNULL ((1)));
+#  endif
+_GL_CXXALIAS_SYS (fseeko, int, (FILE *fp, off_t offset, int whence));
+# endif
+_GL_CXXALIASWARN (fseeko);
+# if (@REPLACE_FSEEKO@ || !@HAVE_FSEEKO@) && !@GNULIB_FSEEK@
+   /* Provide an fseek function that is consistent with fseeko.  */
+   /* In order to avoid that fseek gets defined as a macro here, the
+      developer can request the 'fseek' module.  */
+#  undef fseek
+#  define fseek rpl_fseek
+static inline int _GL_ARG_NONNULL ((1))
+rpl_fseek (FILE *fp, long offset, int whence)
+{
+#  if @REPLACE_FSEEKO@
+  return rpl_fseeko (fp, offset, whence);
+#  else
+  return fseeko (fp, offset, whence);
+#  endif
+}
 # endif
 #elif defined GNULIB_POSIXCHECK
-# undef vsprintf
-# define vsprintf(b,f,a) \
-    (GL_LINK_WARNING ("vsprintf is not always POSIX compliant - " \
-                      "use gnulib module vsprintf-posix for portable " \
-                      "POSIX compliance"), \
-     vsprintf (b, f, a))
+# define _GL_FSEEK_WARN /* Category 1, above.  */
+# undef fseek
+# undef fseeko
+# if HAVE_RAW_DECL_FSEEKO
+_GL_WARN_ON_USE (fseeko, "fseeko is unportable - "
+                 "use gnulib module fseeko for portability");
+# endif
 #endif
 
-#if @GNULIB_DPRINTF@
-# if @REPLACE_DPRINTF@
-#  define dprintf rpl_dprintf
+#ifdef _GL_FSEEK_WARN
+# undef _GL_FSEEK_WARN
+/* Here, either fseek is undefined (but C89 guarantees that it is
+   declared), or it is defined as rpl_fseek (declared above).  */
+_GL_WARN_ON_USE (fseek, "fseek cannot handle files larger than 4 GB "
+                 "on 32-bit platforms - "
+                 "use fseeko function for handling of large files");
+#endif
+
+
+/* ftell, ftello.  See the comments on fseek/fseeko.  */
+
+#if @GNULIB_FTELL@
+# if defined GNULIB_POSIXCHECK && !defined _GL_NO_LARGE_FILES
+#  define _GL_FTELL_WARN /* Category 2, above.  */
+#  undef ftell
+# endif
+# if @REPLACE_FTELL@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef ftell
+#   define ftell rpl_ftell
+#  endif
+_GL_FUNCDECL_RPL (ftell, long, (FILE *fp) _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (ftell, long, (FILE *fp));
+# else
+_GL_CXXALIAS_SYS (ftell, long, (FILE *fp));
+# endif
+_GL_CXXALIASWARN (ftell);
+#endif
+
+#if @GNULIB_FTELLO@
+# if !@GNULIB_FTELL@ && !defined _GL_NO_LARGE_FILES
+#  define _GL_FTELL_WARN /* Category 3, above.  */
+#  undef ftell
+# endif
+# if @REPLACE_FTELLO@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef ftello
+#   define ftello rpl_ftello
+#  endif
+_GL_FUNCDECL_RPL (ftello, off_t, (FILE *fp) _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (ftello, off_t, (FILE *fp));
+# else
+#  if ! @HAVE_FTELLO@
+_GL_FUNCDECL_SYS (ftello, off_t, (FILE *fp) _GL_ARG_NONNULL ((1)));
+#  endif
+_GL_CXXALIAS_SYS (ftello, off_t, (FILE *fp));
 # endif
-# if @REPLACE_DPRINTF@ || !@HAVE_DPRINTF@
-extern int dprintf (int fd, const char *format, ...)
-       __attribute__ ((__format__ (__printf__, 2, 3)));
+_GL_CXXALIASWARN (ftello);
+# if (@REPLACE_FTELLO@ || !@HAVE_FTELLO@) && !@GNULIB_FTELL@
+   /* Provide an ftell function that is consistent with ftello.  */
+   /* In order to avoid that ftell gets defined as a macro here, the
+      developer can request the 'ftell' module.  */
+#  undef ftell
+#  define ftell rpl_ftell
+static inline long _GL_ARG_NONNULL ((1))
+rpl_ftell (FILE *f)
+{
+#  if @REPLACE_FTELLO@
+  return rpl_ftello (f);
+#  else
+  return ftello (f);
+#  endif
+}
 # endif
 #elif defined GNULIB_POSIXCHECK
-# undef dprintf
-# define dprintf(d,f,a) \
-    (GL_LINK_WARNING ("dprintf is unportable - " \
-                      "use gnulib module dprintf for portability"), \
-     dprintf (d, f, a))
+# define _GL_FTELL_WARN /* Category 1, above.  */
+# undef ftell
+# undef ftello
+# if HAVE_RAW_DECL_FTELLO
+_GL_WARN_ON_USE (ftello, "ftello is unportable - "
+                 "use gnulib module ftello for portability");
+# endif
 #endif
 
-#if @GNULIB_VDPRINTF@
-# if @REPLACE_VDPRINTF@
-#  define vdprintf rpl_vdprintf
+#ifdef _GL_FTELL_WARN
+# undef _GL_FTELL_WARN
+/* Here, either ftell is undefined (but C89 guarantees that it is
+   declared), or it is defined as rpl_ftell (declared above).  */
+_GL_WARN_ON_USE (ftell, "ftell cannot handle files larger than 4 GB "
+                 "on 32-bit platforms - "
+                 "use ftello function for handling of large files");
+#endif
+
+
+#if @GNULIB_FWRITE@
+# if @REPLACE_STDIO_WRITE_FUNCS@ && @GNULIB_STDIO_H_SIGPIPE@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef fwrite
+#   define fwrite rpl_fwrite
+#  endif
+_GL_FUNCDECL_RPL (fwrite, size_t,
+                  (const void *ptr, size_t s, size_t n, FILE *stream)
+                  _GL_ARG_NONNULL ((1, 4)));
+_GL_CXXALIAS_RPL (fwrite, size_t,
+                  (const void *ptr, size_t s, size_t n, FILE *stream));
+# else
+_GL_CXXALIAS_SYS (fwrite, size_t,
+                  (const void *ptr, size_t s, size_t n, FILE *stream));
 # endif
-# if @REPLACE_VDPRINTF@ || !@HAVE_VDPRINTF@
-extern int vdprintf (int fd, const char *format, va_list args)
-       __attribute__ ((__format__ (__printf__, 2, 0)));
+_GL_CXXALIASWARN (fwrite);
+#endif
+
+#if @GNULIB_GETDELIM@
+/* Read input, up to (and including) the next occurrence of DELIMITER, from
+   STREAM, store it in *LINEPTR (and NUL-terminate it).
+   *LINEPTR is a pointer returned from malloc (or NULL), pointing to *LINESIZE
+   bytes of space.  It is realloc'd as necessary.
+   Return the number of bytes read and stored at *LINEPTR (not including the
+   NUL terminator), or -1 on error or EOF.  */
+# if @REPLACE_GETDELIM@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef getdelim
+#   define getdelim rpl_getdelim
+#  endif
+_GL_FUNCDECL_RPL (getdelim, ssize_t,
+                  (char **lineptr, size_t *linesize, int delimiter,
+                   FILE *stream)
+                  _GL_ARG_NONNULL ((1, 2, 4)));
+_GL_CXXALIAS_RPL (getdelim, ssize_t,
+                  (char **lineptr, size_t *linesize, int delimiter,
+                   FILE *stream));
+# else
+#  if !@HAVE_DECL_GETDELIM@
+_GL_FUNCDECL_SYS (getdelim, ssize_t,
+                  (char **lineptr, size_t *linesize, int delimiter,
+                   FILE *stream)
+                  _GL_ARG_NONNULL ((1, 2, 4)));
+#  endif
+_GL_CXXALIAS_SYS (getdelim, ssize_t,
+                  (char **lineptr, size_t *linesize, int delimiter,
+                   FILE *stream));
 # endif
+_GL_CXXALIASWARN (getdelim);
 #elif defined GNULIB_POSIXCHECK
-# undef vdprintf
-# define vdprintf(d,f,a) \
-    (GL_LINK_WARNING ("vdprintf is unportable - " \
-                      "use gnulib module vdprintf for portability"), \
-     vdprintf (d, f, a))
+# undef getdelim
+# if HAVE_RAW_DECL_GETDELIM
+_GL_WARN_ON_USE (getdelim, "getdelim is unportable - "
+                 "use gnulib module getdelim for portability");
+# endif
 #endif
 
-#if @GNULIB_VASPRINTF@
-# if @REPLACE_VASPRINTF@
-#  define asprintf rpl_asprintf
-#  define vasprintf rpl_vasprintf
+#if @GNULIB_GETLINE@
+/* Read a line, up to (and including) the next newline, from STREAM, store it
+   in *LINEPTR (and NUL-terminate it).
+   *LINEPTR is a pointer returned from malloc (or NULL), pointing to *LINESIZE
+   bytes of space.  It is realloc'd as necessary.
+   Return the number of bytes read and stored at *LINEPTR (not including the
+   NUL terminator), or -1 on error or EOF.  */
+# if @REPLACE_GETLINE@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef getline
+#   define getline rpl_getline
+#  endif
+_GL_FUNCDECL_RPL (getline, ssize_t,
+                  (char **lineptr, size_t *linesize, FILE *stream)
+                  _GL_ARG_NONNULL ((1, 2, 3)));
+_GL_CXXALIAS_RPL (getline, ssize_t,
+                  (char **lineptr, size_t *linesize, FILE *stream));
+# else
+#  if !@HAVE_DECL_GETLINE@
+_GL_FUNCDECL_SYS (getline, ssize_t,
+                  (char **lineptr, size_t *linesize, FILE *stream)
+                  _GL_ARG_NONNULL ((1, 2, 3)));
+#  endif
+_GL_CXXALIAS_SYS (getline, ssize_t,
+                  (char **lineptr, size_t *linesize, FILE *stream));
+# endif
+# if @HAVE_DECL_GETLINE@
+_GL_CXXALIASWARN (getline);
 # endif
-# if @REPLACE_VASPRINTF@ || !@HAVE_VASPRINTF@
-  /* Write formatted output to a string dynamically allocated with malloc().
-     If the memory allocation succeeds, store the address of the string in
-     *RESULT and return the number of resulting bytes, excluding the trailing
-     NUL.  Upon memory allocation error, or some other error, return -1.  */
-  extern int asprintf (char **result, const char *format, ...)
-    __attribute__ ((__format__ (__printf__, 2, 3)));
-  extern int vasprintf (char **result, const char *format, va_list args)
-    __attribute__ ((__format__ (__printf__, 2, 0)));
+#elif defined GNULIB_POSIXCHECK
+# undef getline
+# if HAVE_RAW_DECL_GETLINE
+_GL_WARN_ON_USE (getline, "getline is unportable - "
+                 "use gnulib module getline for portability");
 # endif
 #endif
 
-#if @GNULIB_OBSTACK_PRINTF@
+#if @GNULIB_OBSTACK_PRINTF@ || @GNULIB_OBSTACK_PRINTF_POSIX@
+struct obstack;
+/* Grow an obstack with formatted output.  Return the number of
+   bytes added to OBS.  No trailing nul byte is added, and the
+   object should be closed with obstack_finish before use.  Upon
+   memory allocation error, call obstack_alloc_failed_handler.  Upon
+   other error, return -1.  */
 # if @REPLACE_OBSTACK_PRINTF@
-#  define obstack_printf rpl_osbtack_printf
-#  define obstack_vprintf rpl_obstack_vprintf
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   define obstack_printf rpl_obstack_printf
+#  endif
+_GL_FUNCDECL_RPL (obstack_printf, int,
+                  (struct obstack *obs, const char *format, ...)
+                  __attribute__ ((__format__ (__printf__, 2, 3)))
+                  _GL_ARG_NONNULL ((1, 2)));
+_GL_CXXALIAS_RPL (obstack_printf, int,
+                  (struct obstack *obs, const char *format, ...));
+# else
+#  if !@HAVE_DECL_OBSTACK_PRINTF@
+_GL_FUNCDECL_SYS (obstack_printf, int,
+                  (struct obstack *obs, const char *format, ...)
+                  __attribute__ ((__format__ (__printf__, 2, 3)))
+                  _GL_ARG_NONNULL ((1, 2)));
+#  endif
+_GL_CXXALIAS_SYS (obstack_printf, int,
+                  (struct obstack *obs, const char *format, ...));
 # endif
-# if @REPLACE_OBSTACK_PRINTF@ || !@HAVE_DECL_OBSTACK_PRINTF@
-  struct obstack;
-  /* Grow an obstack with formatted output.  Return the number of
-     bytes added to OBS.  No trailing nul byte is added, and the
-     object should be closed with obstack_finish before use.  Upon
-     memory allocation error, call obstack_alloc_failed_handler.  Upon
-     other error, return -1.  */
-  extern int obstack_printf (struct obstack *obs, const char *format, ...)
-    __attribute__ ((__format__ (__printf__, 2, 3)));
-  extern int obstack_vprintf (struct obstack *obs, const char *format,
-                              va_list args)
-    __attribute__ ((__format__ (__printf__, 2, 0)));
+_GL_CXXALIASWARN (obstack_printf);
+# if @REPLACE_OBSTACK_PRINTF@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   define obstack_vprintf rpl_obstack_vprintf
+#  endif
+_GL_FUNCDECL_RPL (obstack_vprintf, int,
+                  (struct obstack *obs, const char *format, va_list args)
+                  __attribute__ ((__format__ (__printf__, 2, 0)))
+                  _GL_ARG_NONNULL ((1, 2)));
+_GL_CXXALIAS_RPL (obstack_vprintf, int,
+                  (struct obstack *obs, const char *format, va_list args));
+# else
+#  if !@HAVE_DECL_OBSTACK_PRINTF@
+_GL_FUNCDECL_SYS (obstack_vprintf, int,
+                  (struct obstack *obs, const char *format, va_list args)
+                  __attribute__ ((__format__ (__printf__, 2, 0)))
+                  _GL_ARG_NONNULL ((1, 2)));
+#  endif
+_GL_CXXALIAS_SYS (obstack_vprintf, int,
+                  (struct obstack *obs, const char *format, va_list args));
 # endif
+_GL_CXXALIASWARN (obstack_vprintf);
 #endif
 
-#if @GNULIB_FOPEN@
-# if @REPLACE_FOPEN@
-#  undef fopen
-#  define fopen rpl_fopen
-extern FILE * fopen (const char *filename, const char *mode);
+#if @GNULIB_PERROR@
+/* Print a message to standard error, describing the value of ERRNO,
+   (if STRING is not NULL and not empty) prefixed with STRING and ": ",
+   and terminated with a newline.  */
+# if @REPLACE_PERROR@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   define perror rpl_perror
+#  endif
+_GL_FUNCDECL_RPL (perror, void, (const char *string));
+_GL_CXXALIAS_RPL (perror, void, (const char *string));
+# else
+_GL_CXXALIAS_SYS (perror, void, (const char *string));
 # endif
+_GL_CXXALIASWARN (perror);
 #elif defined GNULIB_POSIXCHECK
-# undef fopen
-# define fopen(f,m) \
-   (GL_LINK_WARNING ("fopen on Win32 platforms is not POSIX compatible - " \
-                     "use gnulib module fopen for portability"), \
-    fopen (f, m))
+# undef perror
+/* Assume perror is always declared.  */
+_GL_WARN_ON_USE (perror, "perror is not always POSIX compliant - "
+                 "use gnulib module perror for portability");
 #endif
 
-#if @GNULIB_FREOPEN@
-# if @REPLACE_FREOPEN@
-#  undef freopen
-#  define freopen rpl_freopen
-extern FILE * freopen (const char *filename, const char *mode, FILE *stream);
+#if @GNULIB_POPEN@
+# if @REPLACE_POPEN@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef popen
+#   define popen rpl_popen
+#  endif
+_GL_FUNCDECL_RPL (popen, FILE *, (const char *cmd, const char *mode)
+                                 _GL_ARG_NONNULL ((1, 2)));
+_GL_CXXALIAS_RPL (popen, FILE *, (const char *cmd, const char *mode));
+# else
+_GL_CXXALIAS_SYS (popen, FILE *, (const char *cmd, const char *mode));
 # endif
+_GL_CXXALIASWARN (popen);
 #elif defined GNULIB_POSIXCHECK
-# undef freopen
-# define freopen(f,m,s) \
-   (GL_LINK_WARNING ("freopen on Win32 platforms is not POSIX compatible - " \
-                     "use gnulib module freopen for portability"), \
-    freopen (f, m, s))
+# undef popen
+# if HAVE_RAW_DECL_POPEN
+_GL_WARN_ON_USE (popen, "popen is buggy on some platforms - "
+                 "use gnulib module popen or pipe for more portability");
+# endif
 #endif
 
-#if @GNULIB_FSEEKO@
-# if @REPLACE_FSEEKO@
-/* Provide fseek, fseeko functions that are aware of a preceding
-   fflush(), and which detect pipes.  */
-#  define fseeko rpl_fseeko
-extern int fseeko (FILE *fp, off_t offset, int whence);
-#  define fseek(fp, offset, whence) fseeko (fp, (off_t)(offset), whence)
+#if @GNULIB_PRINTF_POSIX@ || @GNULIB_PRINTF@
+# if (@GNULIB_PRINTF_POSIX@ && @REPLACE_PRINTF@) \
+     || (@GNULIB_PRINTF@ && @REPLACE_STDIO_WRITE_FUNCS@ && @GNULIB_STDIO_H_SIGPIPE@)
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+/* Don't break __attribute__((format(printf,M,N))).  */
+#   define printf __printf__
+#  endif
+#  define GNULIB_overrides_printf 1
+_GL_FUNCDECL_RPL_1 (__printf__, int,
+                    (const char *format, ...)
+                    __attribute__ ((__format__ (__printf__, 1, 2)))
+                    _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL_1 (printf, __printf__, int, (const char *format, ...));
+# else
+_GL_CXXALIAS_SYS (printf, int, (const char *format, ...));
 # endif
-#elif defined GNULIB_POSIXCHECK
-# undef fseeko
-# define fseeko(f,o,w) \
-   (GL_LINK_WARNING ("fseeko is unportable - " \
-                     "use gnulib module fseeko for portability"), \
-    fseeko (f, o, w))
+_GL_CXXALIASWARN (printf);
+#endif
+#if !@GNULIB_PRINTF_POSIX@ && defined GNULIB_POSIXCHECK
+# if !GNULIB_overrides_printf
+#  undef printf
+# endif
+/* Assume printf is always declared.  */
+_GL_WARN_ON_USE (printf, "printf is not always POSIX compliant - "
+                 "use gnulib module printf-posix for portable "
+                 "POSIX compliance");
 #endif
 
-#if @GNULIB_FSEEK@ && @REPLACE_FSEEK@
-extern int rpl_fseek (FILE *fp, long offset, int whence);
-# undef fseek
-# if defined GNULIB_POSIXCHECK
-#  define fseek(f,o,w) \
-     (GL_LINK_WARNING ("fseek cannot handle files larger than 4 GB " \
-                       "on 32-bit platforms - " \
-                       "use fseeko function for handling of large files"), \
-      rpl_fseek (f, o, w))
+#if @GNULIB_PUTC@
+# if @REPLACE_STDIO_WRITE_FUNCS@ && @GNULIB_STDIO_H_SIGPIPE@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef putc
+#   define putc rpl_fputc
+#  endif
+_GL_FUNCDECL_RPL (fputc, int, (int c, FILE *stream) _GL_ARG_NONNULL ((2)));
+_GL_CXXALIAS_RPL_1 (putc, rpl_fputc, int, (int c, FILE *stream));
 # else
-#  define fseek rpl_fseek
+_GL_CXXALIAS_SYS (putc, int, (int c, FILE *stream));
 # endif
-#elif defined GNULIB_POSIXCHECK
-# ifndef fseek
-#  define fseek(f,o,w) \
-     (GL_LINK_WARNING ("fseek cannot handle files larger than 4 GB " \
-                       "on 32-bit platforms - " \
-                       "use fseeko function for handling of large files"), \
-      fseek (f, o, w))
+_GL_CXXALIASWARN (putc);
+#endif
+
+#if @GNULIB_PUTCHAR@
+# if @REPLACE_STDIO_WRITE_FUNCS@ && @GNULIB_STDIO_H_SIGPIPE@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef putchar
+#   define putchar rpl_putchar
+#  endif
+_GL_FUNCDECL_RPL (putchar, int, (int c));
+_GL_CXXALIAS_RPL (putchar, int, (int c));
+# else
+_GL_CXXALIAS_SYS (putchar, int, (int c));
 # endif
+_GL_CXXALIASWARN (putchar);
 #endif
 
-#if @GNULIB_FTELLO@
-# if @REPLACE_FTELLO@
-#  define ftello rpl_ftello
-extern off_t ftello (FILE *fp);
-#  define ftell(fp) ftello (fp)
+#if @GNULIB_PUTS@
+# if @REPLACE_STDIO_WRITE_FUNCS@ && @GNULIB_STDIO_H_SIGPIPE@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef puts
+#   define puts rpl_puts
+#  endif
+_GL_FUNCDECL_RPL (puts, int, (const char *string) _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (puts, int, (const char *string));
+# else
+_GL_CXXALIAS_SYS (puts, int, (const char *string));
 # endif
-#elif defined GNULIB_POSIXCHECK
-# undef ftello
-# define ftello(f) \
-   (GL_LINK_WARNING ("ftello is unportable - " \
-                     "use gnulib module ftello for portability"), \
-    ftello (f))
+_GL_CXXALIASWARN (puts);
 #endif
 
-#if @GNULIB_FTELL@ && @REPLACE_FTELL@
-extern long rpl_ftell (FILE *fp);
-# undef ftell
-# if GNULIB_POSIXCHECK
-#  define ftell(f) \
-     (GL_LINK_WARNING ("ftell cannot handle files larger than 4 GB " \
-                       "on 32-bit platforms - " \
-                       "use ftello function for handling of large files"), \
-      rpl_ftell (f))
+#if @GNULIB_REMOVE@
+# if @REPLACE_REMOVE@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef remove
+#   define remove rpl_remove
+#  endif
+_GL_FUNCDECL_RPL (remove, int, (const char *name) _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (remove, int, (const char *name));
 # else
-#  define ftell rpl_ftell
+_GL_CXXALIAS_SYS (remove, int, (const char *name));
 # endif
+_GL_CXXALIASWARN (remove);
 #elif defined GNULIB_POSIXCHECK
-# ifndef ftell
-#  define ftell(f) \
-     (GL_LINK_WARNING ("ftell cannot handle files larger than 4 GB " \
-                       "on 32-bit platforms - " \
-                       "use ftello function for handling of large files"), \
-      ftell (f))
-# endif
+# undef remove
+/* Assume remove is always declared.  */
+_GL_WARN_ON_USE (remove, "remove cannot handle directories on some platforms - "
+                 "use gnulib module remove for more portability");
 #endif
 
-#if @GNULIB_FFLUSH@
-# if @REPLACE_FFLUSH@
-#  define fflush rpl_fflush
-  /* Flush all pending data on STREAM according to POSIX rules.  Both
-     output and seekable input streams are supported.
-     Note! LOSS OF DATA can occur if fflush is applied on an input stream
-     that is _not_seekable_ or on an update stream that is _not_seekable_
-     and in which the most recent operation was input.  Seekability can
-     be tested with lseek(fileno(fp),0,SEEK_CUR).  */
-  extern int fflush (FILE *gl_stream);
+#if @GNULIB_RENAME@
+# if @REPLACE_RENAME@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef rename
+#   define rename rpl_rename
+#  endif
+_GL_FUNCDECL_RPL (rename, int,
+                  (const char *old_filename, const char *new_filename)
+                  _GL_ARG_NONNULL ((1, 2)));
+_GL_CXXALIAS_RPL (rename, int,
+                  (const char *old_filename, const char *new_filename));
+# else
+_GL_CXXALIAS_SYS (rename, int,
+                  (const char *old_filename, const char *new_filename));
 # endif
+_GL_CXXALIASWARN (rename);
 #elif defined GNULIB_POSIXCHECK
-# undef fflush
-# define fflush(f) \
-   (GL_LINK_WARNING ("fflush is not always POSIX compliant - " \
-                     "use gnulib module fflush for portable " \
-                     "POSIX compliance"), \
-    fflush (f))
+# undef rename
+/* Assume rename is always declared.  */
+_GL_WARN_ON_USE (rename, "rename is buggy on some platforms - "
+                 "use gnulib module rename for more portability");
 #endif
 
-#if @GNULIB_FCLOSE@
-# if @REPLACE_FCLOSE@
-#  define fclose rpl_fclose
-  /* Close STREAM and its underlying file descriptor.  */
-extern int fclose (FILE *stream);
+#if @GNULIB_RENAMEAT@
+# if @REPLACE_RENAMEAT@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef renameat
+#   define renameat rpl_renameat
+#  endif
+_GL_FUNCDECL_RPL (renameat, int,
+                  (int fd1, char const *file1, int fd2, char const *file2)
+                  _GL_ARG_NONNULL ((2, 4)));
+_GL_CXXALIAS_RPL (renameat, int,
+                  (int fd1, char const *file1, int fd2, char const *file2));
+# else
+#  if !@HAVE_RENAMEAT@
+_GL_FUNCDECL_SYS (renameat, int,
+                  (int fd1, char const *file1, int fd2, char const *file2)
+                  _GL_ARG_NONNULL ((2, 4)));
+#  endif
+_GL_CXXALIAS_SYS (renameat, int,
+                  (int fd1, char const *file1, int fd2, char const *file2));
 # endif
+_GL_CXXALIASWARN (renameat);
 #elif defined GNULIB_POSIXCHECK
-# undef fclose
-# define fclose(f) \
-   (GL_LINK_WARNING ("fclose is not always POSIX compliant - " \
-                     "use gnulib module fclose for portable " \
-                     "POSIX compliance"), \
-    fclose (f))
+# undef renameat
+# if HAVE_RAW_DECL_RENAMEAT
+_GL_WARN_ON_USE (renameat, "renameat is not portable - "
+                 "use gnulib module renameat for portability");
+# endif
 #endif
 
-#if @GNULIB_FPUTC@ && @REPLACE_STDIO_WRITE_FUNCS@ && @GNULIB_STDIO_H_SIGPIPE@
-# undef fputc
-# define fputc rpl_fputc
-extern int fputc (int c, FILE *stream);
+#if @GNULIB_SNPRINTF@
+# if @REPLACE_SNPRINTF@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   define snprintf rpl_snprintf
+#  endif
+_GL_FUNCDECL_RPL (snprintf, int,
+                  (char *str, size_t size, const char *format, ...)
+                  __attribute__ ((__format__ (__printf__, 3, 4)))
+                  _GL_ARG_NONNULL ((3)));
+_GL_CXXALIAS_RPL (snprintf, int,
+                  (char *str, size_t size, const char *format, ...));
+# else
+#  if !@HAVE_DECL_SNPRINTF@
+_GL_FUNCDECL_SYS (snprintf, int,
+                  (char *str, size_t size, const char *format, ...)
+                  __attribute__ ((__format__ (__printf__, 3, 4)))
+                  _GL_ARG_NONNULL ((3)));
+#  endif
+_GL_CXXALIAS_SYS (snprintf, int,
+                  (char *str, size_t size, const char *format, ...));
+# endif
+_GL_CXXALIASWARN (snprintf);
+#elif defined GNULIB_POSIXCHECK
+# undef snprintf
+# if HAVE_RAW_DECL_SNPRINTF
+_GL_WARN_ON_USE (snprintf, "snprintf is unportable - "
+                 "use gnulib module snprintf for portability");
+# endif
 #endif
 
-#if @GNULIB_PUTC@ && @REPLACE_STDIO_WRITE_FUNCS@ && @GNULIB_STDIO_H_SIGPIPE@
-# undef putc
-# define putc rpl_fputc
-extern int putc (int c, FILE *stream);
-#endif
+/* Some people would argue that sprintf should be handled like gets
+   (for example, OpenBSD issues a link warning for both functions),
+   since both can cause security holes due to buffer overruns.
+   However, we believe that sprintf can be used safely, and is more
+   efficient than snprintf in those safe cases; and as proof of our
+   belief, we use sprintf in several gnulib modules.  So this header
+   intentionally avoids adding a warning to sprintf except when
+   GNULIB_POSIXCHECK is defined.  */
 
-#if @GNULIB_PUTCHAR@ && @REPLACE_STDIO_WRITE_FUNCS@ && @GNULIB_STDIO_H_SIGPIPE@
-# undef putchar
-# define putchar rpl_putchar
-extern int putchar (int c);
+#if @GNULIB_SPRINTF_POSIX@
+# if @REPLACE_SPRINTF@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   define sprintf rpl_sprintf
+#  endif
+_GL_FUNCDECL_RPL (sprintf, int, (char *str, const char *format, ...)
+                                __attribute__ ((__format__ (__printf__, 2, 3)))
+                                _GL_ARG_NONNULL ((1, 2)));
+_GL_CXXALIAS_RPL (sprintf, int, (char *str, const char *format, ...));
+# else
+_GL_CXXALIAS_SYS (sprintf, int, (char *str, const char *format, ...));
+# endif
+_GL_CXXALIASWARN (sprintf);
+#elif defined GNULIB_POSIXCHECK
+# undef sprintf
+/* Assume sprintf is always declared.  */
+_GL_WARN_ON_USE (sprintf, "sprintf is not always POSIX compliant - "
+                 "use gnulib module sprintf-posix for portable "
+                 "POSIX compliance");
 #endif
 
-#if @GNULIB_FPUTS@ && @REPLACE_STDIO_WRITE_FUNCS@ && @GNULIB_STDIO_H_SIGPIPE@
-# undef fputs
-# define fputs rpl_fputs
-extern int fputs (const char *string, FILE *stream);
+#if @GNULIB_TMPFILE@
+# if @REPLACE_TMPFILE@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   define tmpfile rpl_tmpfile
+#  endif
+_GL_FUNCDECL_RPL (tmpfile, FILE *, (void));
+_GL_CXXALIAS_RPL (tmpfile, FILE *, (void));
+# else
+_GL_CXXALIAS_SYS (tmpfile, FILE *, (void));
+# endif
+_GL_CXXALIASWARN (tmpfile);
+#elif defined GNULIB_POSIXCHECK
+# undef tmpfile
+# if HAVE_RAW_DECL_TMPFILE
+_GL_WARN_ON_USE (tmpfile, "tmpfile is not usable on mingw - "
+                 "use gnulib module tmpfile for portability");
+# endif
 #endif
 
-#if @GNULIB_PUTS@ && @REPLACE_STDIO_WRITE_FUNCS@ && @GNULIB_STDIO_H_SIGPIPE@
-# undef puts
-# define puts rpl_puts
-extern int puts (const char *string);
+#if @GNULIB_VASPRINTF@
+/* Write formatted output to a string dynamically allocated with malloc().
+   If the memory allocation succeeds, store the address of the string in
+   *RESULT and return the number of resulting bytes, excluding the trailing
+   NUL.  Upon memory allocation error, or some other error, return -1.  */
+# if @REPLACE_VASPRINTF@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   define asprintf rpl_asprintf
+#  endif
+_GL_FUNCDECL_RPL (asprintf, int,
+                  (char **result, const char *format, ...)
+                  __attribute__ ((__format__ (__printf__, 2, 3)))
+                  _GL_ARG_NONNULL ((1, 2)));
+_GL_CXXALIAS_RPL (asprintf, int,
+                  (char **result, const char *format, ...));
+# else
+#  if !@HAVE_VASPRINTF@
+_GL_FUNCDECL_SYS (asprintf, int,
+                  (char **result, const char *format, ...)
+                  __attribute__ ((__format__ (__printf__, 2, 3)))
+                  _GL_ARG_NONNULL ((1, 2)));
+#  endif
+_GL_CXXALIAS_SYS (asprintf, int,
+                  (char **result, const char *format, ...));
+# endif
+_GL_CXXALIASWARN (asprintf);
+# if @REPLACE_VASPRINTF@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   define vasprintf rpl_vasprintf
+#  endif
+_GL_FUNCDECL_RPL (vasprintf, int,
+                  (char **result, const char *format, va_list args)
+                  __attribute__ ((__format__ (__printf__, 2, 0)))
+                  _GL_ARG_NONNULL ((1, 2)));
+_GL_CXXALIAS_RPL (vasprintf, int,
+                  (char **result, const char *format, va_list args));
+# else
+#  if !@HAVE_VASPRINTF@
+_GL_FUNCDECL_SYS (vasprintf, int,
+                  (char **result, const char *format, va_list args)
+                  __attribute__ ((__format__ (__printf__, 2, 0)))
+                  _GL_ARG_NONNULL ((1, 2)));
+#  endif
+_GL_CXXALIAS_SYS (vasprintf, int,
+                  (char **result, const char *format, va_list args));
+# endif
+_GL_CXXALIASWARN (vasprintf);
 #endif
 
-#if @GNULIB_FWRITE@ && @REPLACE_STDIO_WRITE_FUNCS@ && @GNULIB_STDIO_H_SIGPIPE@
-# undef fwrite
-# define fwrite rpl_fwrite
-extern size_t fwrite (const void *ptr, size_t s, size_t n, FILE *stream);
+#if @GNULIB_VDPRINTF@
+# if @REPLACE_VDPRINTF@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   define vdprintf rpl_vdprintf
+#  endif
+_GL_FUNCDECL_RPL (vdprintf, int, (int fd, const char *format, va_list args)
+                                 __attribute__ ((__format__ (__printf__, 2, 0)))
+                                 _GL_ARG_NONNULL ((2)));
+_GL_CXXALIAS_RPL (vdprintf, int, (int fd, const char *format, va_list args));
+# else
+#  if !@HAVE_VDPRINTF@
+_GL_FUNCDECL_SYS (vdprintf, int, (int fd, const char *format, va_list args)
+                                 __attribute__ ((__format__ (__printf__, 2, 0)))
+                                 _GL_ARG_NONNULL ((2)));
+#  endif
+/* Need to cast, because on Solaris, the third parameter will likely be
+                                                    __va_list args.  */
+_GL_CXXALIAS_SYS_CAST (vdprintf, int,
+                       (int fd, const char *format, va_list args));
+# endif
+_GL_CXXALIASWARN (vdprintf);
+#elif defined GNULIB_POSIXCHECK
+# undef vdprintf
+# if HAVE_RAW_DECL_VDPRINTF
+_GL_WARN_ON_USE (vdprintf, "vdprintf is unportable - "
+                 "use gnulib module vdprintf for portability");
+# endif
 #endif
 
-#if @GNULIB_GETDELIM@
-# if !@HAVE_DECL_GETDELIM@
-/* Read input, up to (and including) the next occurrence of DELIMITER, from
-   STREAM, store it in *LINEPTR (and NUL-terminate it).
-   *LINEPTR is a pointer returned from malloc (or NULL), pointing to *LINESIZE
-   bytes of space.  It is realloc'd as necessary.
-   Return the number of bytes read and stored at *LINEPTR (not including the
-   NUL terminator), or -1 on error or EOF.  */
-extern ssize_t getdelim (char **lineptr, size_t *linesize, int delimiter,
-                         FILE *stream);
+#if @GNULIB_VFPRINTF_POSIX@ || @GNULIB_VFPRINTF@
+# if (@GNULIB_VFPRINTF_POSIX@ && @REPLACE_VFPRINTF@) \
+     || (@GNULIB_VFPRINTF@ && @REPLACE_STDIO_WRITE_FUNCS@ && @GNULIB_STDIO_H_SIGPIPE@)
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   define vfprintf rpl_vfprintf
+#  endif
+#  define GNULIB_overrides_vfprintf 1
+_GL_FUNCDECL_RPL (vfprintf, int, (FILE *fp, const char *format, va_list args)
+                                 __attribute__ ((__format__ (__printf__, 2, 0)))
+                                 _GL_ARG_NONNULL ((1, 2)));
+_GL_CXXALIAS_RPL (vfprintf, int, (FILE *fp, const char *format, va_list args));
+# else
+/* Need to cast, because on Solaris, the third parameter is
+                                                      __va_list args
+   and GCC's fixincludes did not change this to __gnuc_va_list.  */
+_GL_CXXALIAS_SYS_CAST (vfprintf, int,
+                       (FILE *fp, const char *format, va_list args));
 # endif
-#elif defined GNULIB_POSIXCHECK
-# undef getdelim
-# define getdelim(l, s, d, f)                                       \
-  (GL_LINK_WARNING ("getdelim is unportable - "                     \
-                    "use gnulib module getdelim for portability"),  \
-   getdelim (l, s, d, f))
+_GL_CXXALIASWARN (vfprintf);
+#endif
+#if !@GNULIB_VFPRINTF_POSIX@ && defined GNULIB_POSIXCHECK
+# if !GNULIB_overrides_vfprintf
+#  undef vfprintf
+# endif
+/* Assume vfprintf is always declared.  */
+_GL_WARN_ON_USE (vfprintf, "vfprintf is not always POSIX compliant - "
+                 "use gnulib module vfprintf-posix for portable "
+                      "POSIX compliance");
 #endif
 
-#if @GNULIB_GETLINE@
-# if @REPLACE_GETLINE@
-#  undef getline
-#  define getline rpl_getline
+#if @GNULIB_VPRINTF_POSIX@ || @GNULIB_VPRINTF@
+# if (@GNULIB_VPRINTF_POSIX@ && @REPLACE_VPRINTF@) \
+     || (@GNULIB_VPRINTF@ && @REPLACE_STDIO_WRITE_FUNCS@ && @GNULIB_STDIO_H_SIGPIPE@)
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   define vprintf rpl_vprintf
+#  endif
+#  define GNULIB_overrides_vprintf 1
+_GL_FUNCDECL_RPL (vprintf, int, (const char *format, va_list args)
+                                __attribute__ ((__format__ (__printf__, 1, 0)))
+                                _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (vprintf, int, (const char *format, va_list args));
+# else
+/* Need to cast, because on Solaris, the second parameter is
+                                                          __va_list args
+   and GCC's fixincludes did not change this to __gnuc_va_list.  */
+_GL_CXXALIAS_SYS_CAST (vprintf, int, (const char *format, va_list args));
 # endif
-# if !@HAVE_DECL_GETLINE@ || @REPLACE_GETLINE@
-/* Read a line, up to (and including) the next newline, from STREAM, store it
-   in *LINEPTR (and NUL-terminate it).
-   *LINEPTR is a pointer returned from malloc (or NULL), pointing to *LINESIZE
-   bytes of space.  It is realloc'd as necessary.
-   Return the number of bytes read and stored at *LINEPTR (not including the
-   NUL terminator), or -1 on error or EOF.  */
-extern ssize_t getline (char **lineptr, size_t *linesize, FILE *stream);
+_GL_CXXALIASWARN (vprintf);
+#endif
+#if !@GNULIB_VPRINTF_POSIX@ && defined GNULIB_POSIXCHECK
+# if !GNULIB_overrides_vprintf
+#  undef vprintf
 # endif
-#elif defined GNULIB_POSIXCHECK
-# undef getline
-# define getline(l, s, f)                                               \
-  (GL_LINK_WARNING ("getline is unportable - "                          \
-                    "use gnulib module getline for portability"),       \
-   getline (l, s, f))
+/* Assume vprintf is always declared.  */
+_GL_WARN_ON_USE (vprintf, "vprintf is not always POSIX compliant - "
+                 "use gnulib module vprintf-posix for portable "
+                 "POSIX compliance");
 #endif
 
-#if @GNULIB_PERROR@
-# if @REPLACE_PERROR@
-#  define perror rpl_perror
-/* Print a message to standard error, describing the value of ERRNO,
-   (if STRING is not NULL and not empty) prefixed with STRING and ": ",
-   and terminated with a newline.  */
-extern void perror (const char *string);
+#if @GNULIB_VSNPRINTF@
+# if @REPLACE_VSNPRINTF@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   define vsnprintf rpl_vsnprintf
+#  endif
+_GL_FUNCDECL_RPL (vsnprintf, int,
+                  (char *str, size_t size, const char *format, va_list args)
+                  __attribute__ ((__format__ (__printf__, 3, 0)))
+                  _GL_ARG_NONNULL ((3)));
+_GL_CXXALIAS_RPL (vsnprintf, int,
+                  (char *str, size_t size, const char *format, va_list args));
+# else
+#  if !@HAVE_DECL_VSNPRINTF@
+_GL_FUNCDECL_SYS (vsnprintf, int,
+                  (char *str, size_t size, const char *format, va_list args)
+                  __attribute__ ((__format__ (__printf__, 3, 0)))
+                  _GL_ARG_NONNULL ((3)));
+#  endif
+_GL_CXXALIAS_SYS (vsnprintf, int,
+                  (char *str, size_t size, const char *format, va_list args));
 # endif
+_GL_CXXALIASWARN (vsnprintf);
 #elif defined GNULIB_POSIXCHECK
-# undef perror
-# define perror(s) \
-    (GL_LINK_WARNING ("perror is not always POSIX compliant - " \
-                      "use gnulib module perror for portability"), \
-     perror (s))
+# undef vsnprintf
+# if HAVE_RAW_DECL_VSNPRINTF
+_GL_WARN_ON_USE (vsnprintf, "vsnprintf is unportable - "
+                 "use gnulib module vsnprintf for portability");
+# endif
 #endif
 
-#ifdef __cplusplus
-}
+#if @GNULIB_VSPRINTF_POSIX@
+# if @REPLACE_VSPRINTF@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   define vsprintf rpl_vsprintf
+#  endif
+_GL_FUNCDECL_RPL (vsprintf, int,
+                  (char *str, const char *format, va_list args)
+                  __attribute__ ((__format__ (__printf__, 2, 0)))
+                  _GL_ARG_NONNULL ((1, 2)));
+_GL_CXXALIAS_RPL (vsprintf, int,
+                  (char *str, const char *format, va_list args));
+# else
+/* Need to cast, because on Solaris, the third parameter is
+                                                       __va_list args
+   and GCC's fixincludes did not change this to __gnuc_va_list.  */
+_GL_CXXALIAS_SYS_CAST (vsprintf, int,
+                       (char *str, const char *format, va_list args));
+# endif
+_GL_CXXALIASWARN (vsprintf);
+#elif defined GNULIB_POSIXCHECK
+# undef vsprintf
+/* Assume vsprintf is always declared.  */
+_GL_WARN_ON_USE (vsprintf, "vsprintf is not always POSIX compliant - "
+                 "use gnulib module vsprintf-posix for portable "
+                      "POSIX compliance");
 #endif
 
+
 #endif /* _GL_STDIO_H */
 #endif /* _GL_STDIO_H */
 #endif