Mechanically remove _IO_ name aliases for types and constants.

This patch mechanically removes all remaining uses, and the
definitions, of the following libio name aliases:

 name                         replaced with
 ----                         -------------
 _IO_FILE                     FILE
 _IO_fpos_t                   __fpos_t
 _IO_fpos64_t                 __fpos64_t
 _IO_size_t                   size_t
 _IO_ssize_t                  ssize_t or __ssize_t
 _IO_off_t                    off_t
 _IO_off64_t                  off64_t
 _IO_pid_t                    pid_t
 _IO_uid_t                    uid_t
 _IO_wint_t                   wint_t
 _IO_va_list                  va_list or __gnuc_va_list
 _IO_BUFSIZ                   BUFSIZ
 _IO_cookie_io_functions_t    cookie_io_functions_t
 __io_read_fn                 cookie_read_function_t
 __io_write_fn                cookie_write_function_t
 __io_seek_fn                 cookie_seek_function_t
 __io_close_fn                cookie_close_function_t

I used __fpos_t and __fpos64_t instead of fpos_t and fpos64_t because
the definitions of fpos_t and fpos64_t depend on the largefile mode.
I used __ssize_t and __gnuc_va_list in a handful of headers where
namespace cleanliness might be relevant even though they're
internal-use-only.  In all other cases, I used the public-namespace
name.

There are a tiny handful of places where I left a use of 'struct _IO_FILE'
alone, because it was being used together with 'struct _IO_FILE_plus'
or 'struct _IO_FILE_complete' in the same arithmetic expression.

Because this patch was almost entirely done with search and replace, I
may have introduced indentation botches.  I did proofread the diff,
but I may have missed something.

The ChangeLog below calls out all of the places where this was not a
pure search-and-replace change.

Installed stripped libraries and executables are unchanged by this patch,
except that some assertions in vfscanf.c change line numbers.

	* libio/libio.h (_IO_FILE): Delete; all uses changed to FILE.
	(_IO_fpos_t): Delete; all uses changed to __fpos_t.
	(_IO_fpos64_t): Delete; all uses changed to __fpos64_t.
	(_IO_size_t): Delete; all uses changed to size_t.
	(_IO_ssize_t): Delete; all uses changed to ssize_t or __ssize_t.
	(_IO_off_t): Delete; all uses changed to off_t.
	(_IO_off64_t): Delete; all uses changed to off64_t.
	(_IO_pid_t): Delete; all uses changed to pid_t.
	(_IO_uid_t): Delete; all uses changed to uid_t.
	(_IO_wint_t): Delete; all uses changed to wint_t.
	(_IO_va_list): Delete; all uses changed to va_list or __gnuc_va_list.
	(_IO_BUFSIZ): Delete; all uses changed to BUFSIZ.
	(_IO_cookie_io_functions_t): Delete; all uses changed to
	cookie_io_functions_t.
	(__io_read_fn): Delete; all uses changed to cookie_read_function_t.
	(__io_write_fn): Delete; all uses changed to cookie_write_function_t.
	(__io_seek_fn): Delete; all uses changed to cookie_seek_function_t.
	(__io_close_fn): Delete: all uses changed to cookie_close_function_t.

	* libio/iofopncook.c: Remove unnecessary forward declarations.
	* libio/iolibio.h: Correct outdated commentary.
	* malloc/malloc.c (__malloc_stats): Remove unnecessary casts.
	* stdio-common/fxprintf.c (__fxprintf_nocancel):
	Remove unnecessary casts.
	* stdio-common/getline.c: Use _IO_getdelim directly.
	Don't redefine ssize_t.
	* stdio-common/printf_fp.c, stdio_common/printf_fphex.c
	* stdio-common/printf_size.c: Don't redefine size_t or FILE.
	Remove outdated comments.
	* stdio-common/vfscanf.c: Don't redefine va_list.

10 files changed, 25 insertions, 50 deletions

diff --git a/stdio-common/fxprintf.c b/stdio-common/fxprintf.c
index c1f02925fb..c4a1146b20 100644
--- a/stdio-common/fxprintf.c
+++ b/stdio-common/fxprintf.c
@@ -87,12 +87,12 @@ __fxprintf_nocancel (FILE *fp, const char *fmt, ...)
   va_list ap;
   va_start (ap, fmt);
   _IO_flockfile (fp);
-  int save_flags2 = ((_IO_FILE *)fp)->_flags2;
-  ((_IO_FILE *)fp)->_flags2 |= _IO_FLAGS2_NOTCANCEL;
+  int save_flags2 = fp->_flags2;
+  fp->_flags2 |= _IO_FLAGS2_NOTCANCEL;
 
   int res = locked_vfxprintf (fp, fmt, ap);
 
-  ((_IO_FILE *)fp)->_flags2 = save_flags2;
+  fp->_flags2 = save_flags2;
   _IO_funlockfile (fp);
   va_end (ap);
   return res;
diff --git a/stdio-common/getline.c b/stdio-common/getline.c
index a8b91ec62a..77f77c2400 100644
--- a/stdio-common/getline.c
+++ b/stdio-common/getline.c
@@ -17,19 +17,15 @@
 
 #include <stddef.h>
 #include <stdio.h>
+#include "../libio/libioP.h"
 
 #undef __getline
 
-#include "../libio/libioP.h"
-#undef ssize_t
-#define ssize_t _IO_ssize_t
-#define __getdelim _IO_getdelim
-
 /* Like getdelim, but always looks for a newline.  */
 ssize_t
 __getline (char **lineptr, size_t *n, FILE *stream)
 {
-  return __getdelim (lineptr, n, '\n', stream);
+  return _IO_getdelim (lineptr, n, '\n', stream);
 }
 
 weak_alias (__getline, getline)
diff --git a/stdio-common/isoc99_vfscanf.c b/stdio-common/isoc99_vfscanf.c
index 5d4389abdb..b80e05f8db 100644
--- a/stdio-common/isoc99_vfscanf.c
+++ b/stdio-common/isoc99_vfscanf.c
@@ -21,7 +21,7 @@
 /* Read formatted input from STREAM according to the format string FORMAT.  */
 /* VARARGS2 */
 int
-__isoc99_vfscanf (FILE *stream, const char *format, _IO_va_list args)
+__isoc99_vfscanf (FILE *stream, const char *format, va_list args)
 {
   int done;
 
diff --git a/stdio-common/isoc99_vscanf.c b/stdio-common/isoc99_vscanf.c
index 8b2b8af0b5..0b747f85ba 100644
--- a/stdio-common/isoc99_vscanf.c
+++ b/stdio-common/isoc99_vscanf.c
@@ -21,7 +21,7 @@
 /* Read formatted input from STDIN according to the format string FORMAT.  */
 /* VARARGS2 */
 int
-__isoc99_vscanf (const char *format, _IO_va_list args)
+__isoc99_vscanf (const char *format, va_list args)
 {
   int done;
 
diff --git a/stdio-common/isoc99_vsscanf.c b/stdio-common/isoc99_vsscanf.c
index ead4e551be..ac85ef2d0d 100644
--- a/stdio-common/isoc99_vsscanf.c
+++ b/stdio-common/isoc99_vsscanf.c
@@ -29,7 +29,7 @@
 #include "../libio/strfile.h"
 
 int
-__isoc99_vsscanf (const char *string, const char *format, _IO_va_list args)
+__isoc99_vsscanf (const char *string, const char *format, va_list args)
 {
   int ret;
   _IO_strfile sf;
diff --git a/stdio-common/printf_fp.c b/stdio-common/printf_fp.c
index 97f643af24..66ab59bad2 100644
--- a/stdio-common/printf_fp.c
+++ b/stdio-common/printf_fp.c
@@ -56,17 +56,12 @@
 #endif
 #include <assert.h>
 
-/* This defines make it possible to use the same code for GNU C library and
-   the GNU I/O library.	 */
 #define PUT(f, s, n) _IO_sputn (f, s, n)
 #define PAD(f, c, n) (wide ? _IO_wpadn (f, c, n) : _IO_padn (f, c, n))
-/* We use this file GNU C library and GNU I/O library.	So make
-   names equal.	 */
 #undef putc
 #define putc(c, f) (wide \
 		    ? (int)_IO_putwc_unlocked (c, f) : _IO_putc_unlocked (c, f))
-#define size_t     _IO_size_t
-#define FILE	     _IO_FILE
+
 
 /* Macros for doing the actual output.  */
 
diff --git a/stdio-common/printf_fphex.c b/stdio-common/printf_fphex.c
index 002a7e1fec..df3956316d 100644
--- a/stdio-common/printf_fphex.c
+++ b/stdio-common/printf_fphex.c
@@ -43,18 +43,13 @@
 /* #define NDEBUG 1*/		/* Undefine this for debugging assertions.  */
 #include <assert.h>
 
-/* This defines make it possible to use the same code for GNU C library and
-   the GNU I/O library.	 */
 #include <libioP.h>
 #define PUT(f, s, n) _IO_sputn (f, s, n)
 #define PAD(f, c, n) (wide ? _IO_wpadn (f, c, n) : _IO_padn (f, c, n))
-/* We use this file GNU C library and GNU I/O library.	So make
-   names equal.	 */
 #undef putc
 #define putc(c, f) (wide \
 		     ? (int)_IO_putwc_unlocked (c, f) : _IO_putc_unlocked (c, f))
-#define size_t     _IO_size_t
-#define FILE	     _IO_FILE
+
 
 /* Macros for doing the actual output.  */
 
diff --git a/stdio-common/printf_size.c b/stdio-common/printf_size.c
index 520b6b1e9a..7e073c50d4 100644
--- a/stdio-common/printf_size.c
+++ b/stdio-common/printf_size.c
@@ -24,18 +24,12 @@
 #include <printf.h>
 #include <libioP.h>
 
-
-/* This defines make it possible to use the same code for GNU C library and
-   the GNU I/O library.	 */
 #define PUT(f, s, n) _IO_sputn (f, s, n)
 #define PAD(f, c, n) (wide ? _IO_wpadn (f, c, n) : _IO_padn (f, c, n))
-/* We use this file GNU C library and GNU I/O library.	So make
-   names equal.	 */
 #undef putc
 #define putc(c, f) (wide \
 		    ? (int)_IO_putwc_unlocked (c, f) : _IO_putc_unlocked (c, f))
-#define size_t	_IO_size_t
-#define FILE	_IO_FILE
+
 
 /* Macros for doing the actual output.  */
 
diff --git a/stdio-common/vfprintf.c b/stdio-common/vfprintf.c
index a2cab30685..27d3a2c1bf 100644
--- a/stdio-common/vfprintf.c
+++ b/stdio-common/vfprintf.c
@@ -92,7 +92,7 @@ typedef const char *THOUSANDS_SEP_T;
   do {									      \
     if (width > 0)							      \
       {									      \
-	_IO_ssize_t written = _IO_padn (s, (Padchar), width);		      \
+	ssize_t written = _IO_padn (s, (Padchar), width);		      \
 	if (__glibc_unlikely (written != width))			      \
 	  {								      \
 	    done = -1;							      \
@@ -122,7 +122,7 @@ typedef wchar_t THOUSANDS_SEP_T;
   do {									      \
     if (width > 0)							      \
       {									      \
-	_IO_ssize_t written = _IO_wpadn (s, (Padchar), width);		      \
+	ssize_t written = _IO_wpadn (s, (Padchar), width);		      \
 	if (__glibc_unlikely (written != width))			      \
 	  {								      \
 	    done = -1;							      \
@@ -1218,7 +1218,7 @@ static int buffered_vfprintf (FILE *stream, const CHAR_T *fmt, va_list)
      __THROW __attribute__ ((noinline));
 
 /* Handle positional format specifiers.  */
-static int printf_positional (_IO_FILE *s,
+static int printf_positional (FILE *s,
 			      const CHAR_T *format, int readonly_format,
 			      va_list ap, va_list *ap_savep, int done,
 			      int nspecs_done, const UCHAR_T *lead_str_end,
@@ -1695,7 +1695,7 @@ do_positional:
 }
 
 static int
-printf_positional (_IO_FILE *s, const CHAR_T *format, int readonly_format,
+printf_positional (FILE *s, const CHAR_T *format, int readonly_format,
 		   va_list ap, va_list *ap_savep, int done, int nspecs_done,
 		   const UCHAR_T *lead_str_end,
 		   CHAR_T *work_buffer, int save_errno,
@@ -2201,22 +2201,21 @@ struct helper_file
 #ifdef COMPILE_WPRINTF
     struct _IO_wide_data _wide_data;
 #endif
-    _IO_FILE *_put_stream;
+    FILE *_put_stream;
 #ifdef _IO_MTSAFE_IO
     _IO_lock_t lock;
 #endif
   };
 
 static int
-_IO_helper_overflow (_IO_FILE *s, int c)
+_IO_helper_overflow (FILE *s, int c)
 {
-  _IO_FILE *target = ((struct helper_file*) s)->_put_stream;
+  FILE *target = ((struct helper_file*) s)->_put_stream;
 #ifdef COMPILE_WPRINTF
   int used = s->_wide_data->_IO_write_ptr - s->_wide_data->_IO_write_base;
   if (used)
     {
-      _IO_size_t written = _IO_sputn (target, s->_wide_data->_IO_write_base,
-				      used);
+      size_t written = _IO_sputn (target, s->_wide_data->_IO_write_base, used);
       if (written == 0 || written == WEOF)
 	return WEOF;
       __wmemmove (s->_wide_data->_IO_write_base,
@@ -2228,7 +2227,7 @@ _IO_helper_overflow (_IO_FILE *s, int c)
   int used = s->_IO_write_ptr - s->_IO_write_base;
   if (used)
     {
-      _IO_size_t written = _IO_sputn (target, s->_IO_write_base, used);
+      size_t written = _IO_sputn (target, s->_IO_write_base, used);
       if (written == 0 || written == EOF)
 	return EOF;
       memmove (s->_IO_write_base, s->_IO_write_base + written,
@@ -2286,12 +2285,11 @@ static const struct _IO_jump_t _IO_helper_jumps libio_vtable =
 #endif
 
 static int
-buffered_vfprintf (_IO_FILE *s, const CHAR_T *format,
-		   _IO_va_list args)
+buffered_vfprintf (FILE *s, const CHAR_T *format, va_list args)
 {
-  CHAR_T buf[_IO_BUFSIZ];
+  CHAR_T buf[BUFSIZ];
   struct helper_file helper;
-  _IO_FILE *hp = (_IO_FILE *) &helper._f;
+  FILE *hp = (FILE *) &helper._f;
   int result, to_flush;
 
   /* Orient the stream.  */
diff --git a/stdio-common/vfscanf.c b/stdio-common/vfscanf.c
index 099dfeac9e..a519a57b8f 100644
--- a/stdio-common/vfscanf.c
+++ b/stdio-common/vfscanf.c
@@ -73,9 +73,6 @@
 #include <locale/localeinfo.h>
 #include <libioP.h>
 
-#undef va_list
-#define va_list	_IO_va_list
-
 #ifdef COMPILE_WSCANF
 # define ungetc(c, s)	((void) (c == WEOF				      \
 				 || (--read_in,				      \
@@ -270,11 +267,11 @@ char_buffer_add (struct char_buffer *buffer, CHAR_T ch)
    Return the number of assignments made, or -1 for an input error.  */
 #ifdef COMPILE_WSCANF
 int
-_IO_vfwscanf (_IO_FILE *s, const wchar_t *format, _IO_va_list argptr,
+_IO_vfwscanf (FILE *s, const wchar_t *format, va_list argptr,
 	      int *errp)
 #else
 int
-_IO_vfscanf_internal (_IO_FILE *s, const char *format, _IO_va_list argptr,
+_IO_vfscanf_internal (FILE *s, const char *format, va_list argptr,
 		      int *errp)
 #endif
 {