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-rw-r--r--libio/libio.h560
1 files changed, 191 insertions, 369 deletions
diff --git a/libio/libio.h b/libio/libio.h
index efd09f120b..00f9169613 100644
--- a/libio/libio.h
+++ b/libio/libio.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 1991-2016 Free Software Foundation, Inc.
+/* Copyright (C) 1991-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Written by Per Bothner <bothner@cygnus.com>.
@@ -25,151 +25,97 @@
This exception applies to code released by its copyright holders
in files containing the exception. */
-#ifndef _IO_STDIO_H
-#define _IO_STDIO_H
-
-#include <_G_config.h>
-/* ALL of these should be defined in _G_config.h */
-#define _IO_fpos_t _G_fpos_t
-#define _IO_fpos64_t _G_fpos64_t
-#define _IO_size_t size_t
-#define _IO_ssize_t __ssize_t
-#define _IO_off_t __off_t
-#define _IO_off64_t __off64_t
-#define _IO_pid_t __pid_t
-#define _IO_uid_t __uid_t
-#define _IO_iconv_t _G_iconv_t
-#define _IO_HAVE_ST_BLKSIZE _G_HAVE_ST_BLKSIZE
-#define _IO_BUFSIZ _G_BUFSIZ
-#define _IO_va_list _G_va_list
-#define _IO_wint_t wint_t
-
-/* This define avoids name pollution if we're using GNU stdarg.h */
-#define __need___va_list
-#include <stdarg.h>
-#ifdef __GNUC_VA_LIST
-# undef _IO_va_list
-# define _IO_va_list __gnuc_va_list
-#endif /* __GNUC_VA_LIST */
-
-#ifndef __P
-# include <sys/cdefs.h>
-#endif /*!__P*/
-
-#define _IO_UNIFIED_JUMPTABLES 1
-
-#ifndef EOF
-# define EOF (-1)
+#ifndef _LIBIO_H
+#define _LIBIO_H 1
+
+#ifndef _LIBC
+# error "libio.h should only be included when building glibc itself"
#endif
-#ifndef NULL
-# if defined __GNUG__ && \
- (__GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 8))
-# define NULL (__null)
-# else
-# if !defined(__cplusplus)
-# define NULL ((void*)0)
-# else
-# define NULL (0)
-# endif
-# endif
+#ifdef _ISOMAC
+# error "libio.h should not be included under _ISOMAC"
+#endif
+
+#include <stdio.h>
+
+#if defined _IO_MTSAFE_IO && !defined _IO_lock_t_defined
+# error "Someone forgot to include stdio-lock.h"
#endif
+#define __need_wchar_t
+#include <stddef.h>
+
+#include <bits/types/__mbstate_t.h>
+#include <bits/types/wint_t.h>
+#include <gconv.h>
+
+typedef union
+{
+ struct __gconv_info __cd;
+ struct
+ {
+ struct __gconv_info __cd;
+ struct __gconv_step_data __data;
+ } __combined;
+} _IO_iconv_t;
+
+#include <shlib-compat.h>
+
+/* _IO_seekoff modes */
#define _IOS_INPUT 1
#define _IOS_OUTPUT 2
-#define _IOS_ATEND 4
-#define _IOS_APPEND 8
-#define _IOS_TRUNC 16
-#define _IOS_NOCREATE 32
-#define _IOS_NOREPLACE 64
-#define _IOS_BIN 128
-
-/* Magic numbers and bits for the _flags field.
- The magic numbers use the high-order bits of _flags;
- the remaining bits are available for variable flags.
- Note: The magic numbers must all be negative if stdio
- emulation is desired. */
-
-#define _IO_MAGIC 0xFBAD0000 /* Magic number */
-#define _OLD_STDIO_MAGIC 0xFABC0000 /* Emulate old stdio. */
-#define _IO_MAGIC_MASK 0xFFFF0000
-#define _IO_USER_BUF 1 /* User owns buffer; don't delete it on close. */
-#define _IO_UNBUFFERED 2
-#define _IO_NO_READS 4 /* Reading not allowed */
-#define _IO_NO_WRITES 8 /* Writing not allowd */
-#define _IO_EOF_SEEN 0x10
-#define _IO_ERR_SEEN 0x20
-#define _IO_DELETE_DONT_CLOSE 0x40 /* Don't call close(_fileno) on cleanup. */
-#define _IO_LINKED 0x80 /* Set if linked (using _chain) to streambuf::_list_all.*/
-#define _IO_IN_BACKUP 0x100
-#define _IO_LINE_BUF 0x200
-#define _IO_TIED_PUT_GET 0x400 /* Set if put and get pointer logicly tied. */
-#define _IO_CURRENTLY_PUTTING 0x800
-#define _IO_IS_APPENDING 0x1000
-#define _IO_IS_FILEBUF 0x2000
-#define _IO_BAD_SEEN 0x4000
-#define _IO_USER_LOCK 0x8000
+/* Magic number and bits for the _flags field. The magic number is
+ mostly vestigial, but preserved for compatibility. It occupies the
+ high 16 bits of _flags; the low 16 bits are actual flag bits. */
+
+#define _IO_MAGIC 0xFBAD0000 /* Magic number */
+#define _IO_MAGIC_MASK 0xFFFF0000
+#define _IO_USER_BUF 0x0001 /* Don't deallocate buffer on close. */
+#define _IO_UNBUFFERED 0x0002
+#define _IO_NO_READS 0x0004 /* Reading not allowed. */
+#define _IO_NO_WRITES 0x0008 /* Writing not allowed. */
+#define _IO_EOF_SEEN 0x0010
+#define _IO_ERR_SEEN 0x0020
+#define _IO_DELETE_DONT_CLOSE 0x0040 /* Don't call close(_fileno) on close. */
+#define _IO_LINKED 0x0080 /* In the list of all open files. */
+#define _IO_IN_BACKUP 0x0100
+#define _IO_LINE_BUF 0x0200
+#define _IO_TIED_PUT_GET 0x0400 /* Put and get pointer move in unison. */
+#define _IO_CURRENTLY_PUTTING 0x0800
+#define _IO_IS_APPENDING 0x1000
+#define _IO_IS_FILEBUF 0x2000
+ /* 0x4000 No longer used, reserved for compat. */
+#define _IO_USER_LOCK 0x8000
+
+/* Bits for the _flags2 field. */
#define _IO_FLAGS2_MMAP 1
#define _IO_FLAGS2_NOTCANCEL 2
-#ifdef _LIBC
-# define _IO_FLAGS2_FORTIFY 4
-#endif
+#define _IO_FLAGS2_FORTIFY 4
#define _IO_FLAGS2_USER_WBUF 8
-#ifdef _LIBC
-# define _IO_FLAGS2_SCANF_STD 16
-# define _IO_FLAGS2_NOCLOSE 32
-# define _IO_FLAGS2_CLOEXEC 64
-#endif
+#define _IO_FLAGS2_SCANF_STD 16
+#define _IO_FLAGS2_NOCLOSE 32
+#define _IO_FLAGS2_CLOEXEC 64
+#define _IO_FLAGS2_NEED_LOCK 128
-/* These are "formatting flags" matching the iostream fmtflags enum values. */
-#define _IO_SKIPWS 01
-#define _IO_LEFT 02
-#define _IO_RIGHT 04
-#define _IO_INTERNAL 010
-#define _IO_DEC 020
-#define _IO_OCT 040
-#define _IO_HEX 0100
-#define _IO_SHOWBASE 0200
-#define _IO_SHOWPOINT 0400
-#define _IO_UPPERCASE 01000
-#define _IO_SHOWPOS 02000
-#define _IO_SCIENTIFIC 04000
-#define _IO_FIXED 010000
-#define _IO_UNITBUF 020000
-#define _IO_STDIO 040000
-#define _IO_DONT_CLOSE 0100000
-#define _IO_BOOLALPHA 0200000
-
-
-struct _IO_jump_t; struct _IO_FILE;
-
-/* Handle lock. */
-#ifdef _IO_MTSAFE_IO
-/* _IO_lock_t defined in internal headers during the glibc build. */
-#else
-typedef void _IO_lock_t;
-#endif
+/* _IO_pos_BAD is an off64_t value indicating error, unknown, or EOF. */
+#define _IO_pos_BAD ((off64_t) -1)
+/* _IO_pos_adjust adjusts an off64_t by some number of bytes. */
+#define _IO_pos_adjust(pos, delta) ((pos) += (delta))
-/* A streammarker remembers a position in a buffer. */
+/* _IO_pos_0 is an off64_t value indicating beginning of file. */
+#define _IO_pos_0 ((off64_t) 0)
+struct _IO_jump_t;
+
+/* A streammarker remembers a position in a buffer. */
struct _IO_marker {
struct _IO_marker *_next;
- struct _IO_FILE *_sbuf;
+ FILE *_sbuf;
/* If _pos >= 0
it points to _buf->Gbase()+_pos. FIXME comment */
/* if _pos < 0, it points to _buf->eBptr()+_pos. FIXME comment */
int _pos;
-#if 0
- void set_streampos(streampos sp) { _spos = sp; }
- void set_offset(int offset) { _pos = offset; _spos = (streampos)(-2); }
- public:
- streammarker(streambuf *sb);
- ~streammarker();
- int saving() { return _spos == -2; }
- int delta(streammarker&);
- int delta();
-#endif
};
/* This is the structure from the libstdc++ codecvt class. */
@@ -181,7 +127,6 @@ enum __codecvt_result
__codecvt_noconv
};
-#if defined _LIBC || defined _GLIBCPP_USE_WCHAR_T
/* The order of the elements in the following struct must match the order
of the virtual functions in the libstdc++ codecvt class. */
struct _IO_codecvt
@@ -204,7 +149,7 @@ struct _IO_codecvt
int (*__codecvt_do_encoding) (struct _IO_codecvt *);
int (*__codecvt_do_always_noconv) (struct _IO_codecvt *);
int (*__codecvt_do_length) (struct _IO_codecvt *, __mbstate_t *,
- const char *, const char *, _IO_size_t);
+ const char *, const char *, size_t);
int (*__codecvt_do_max_length) (struct _IO_codecvt *);
_IO_iconv_t __cd_in;
@@ -236,260 +181,108 @@ struct _IO_wide_data
const struct _IO_jump_t *_wide_vtable;
};
-#endif
-
-struct _IO_FILE {
- int _flags; /* High-order word is _IO_MAGIC; rest is flags. */
-#define _IO_file_flags _flags
-
- /* The following pointers correspond to the C++ streambuf protocol. */
- /* Note: Tk uses the _IO_read_ptr and _IO_read_end fields directly. */
- char* _IO_read_ptr; /* Current read pointer */
- char* _IO_read_end; /* End of get area. */
- char* _IO_read_base; /* Start of putback+get area. */
- char* _IO_write_base; /* Start of put area. */
- char* _IO_write_ptr; /* Current put pointer. */
- char* _IO_write_end; /* End of put area. */
- char* _IO_buf_base; /* Start of reserve area. */
- char* _IO_buf_end; /* End of reserve area. */
- /* The following fields are used to support backing up and undo. */
- char *_IO_save_base; /* Pointer to start of non-current get area. */
- char *_IO_backup_base; /* Pointer to first valid character of backup area */
- char *_IO_save_end; /* Pointer to end of non-current get area. */
-
- struct _IO_marker *_markers;
-
- struct _IO_FILE *_chain;
-
- int _fileno;
-#if 0
- int _blksize;
-#else
- int _flags2;
-#endif
- _IO_off_t _old_offset; /* This used to be _offset but it's too small. */
-
-#define __HAVE_COLUMN /* temporary */
- /* 1+column number of pbase(); 0 is unknown. */
- unsigned short _cur_column;
- signed char _vtable_offset;
- char _shortbuf[1];
-
- /* char* _save_gptr; char* _save_egptr; */
-
- _IO_lock_t *_lock;
-#ifdef _IO_USE_OLD_IO_FILE
-};
-
-struct _IO_FILE_complete
-{
- struct _IO_FILE _file;
-#endif
-#if defined _G_IO_IO_FILE_VERSION && _G_IO_IO_FILE_VERSION == 0x20001
- _IO_off64_t _offset;
-# if defined _LIBC || defined _GLIBCPP_USE_WCHAR_T
- /* Wide character stream stuff. */
- struct _IO_codecvt *_codecvt;
- struct _IO_wide_data *_wide_data;
- struct _IO_FILE *_freeres_list;
- void *_freeres_buf;
-# else
- void *__pad1;
- void *__pad2;
- void *__pad3;
- void *__pad4;
-# endif
- size_t __pad5;
- int _mode;
- /* Make sure we don't get into trouble again. */
- char _unused2[15 * sizeof (int) - 4 * sizeof (void *) - sizeof (size_t)];
-#endif
-};
-
-#ifndef __cplusplus
-typedef struct _IO_FILE _IO_FILE;
-#endif
struct _IO_FILE_plus;
extern struct _IO_FILE_plus _IO_2_1_stdin_;
extern struct _IO_FILE_plus _IO_2_1_stdout_;
extern struct _IO_FILE_plus _IO_2_1_stderr_;
-#ifndef _LIBC
-#define _IO_stdin ((_IO_FILE*)(&_IO_2_1_stdin_))
-#define _IO_stdout ((_IO_FILE*)(&_IO_2_1_stdout_))
-#define _IO_stderr ((_IO_FILE*)(&_IO_2_1_stderr_))
-#else
-extern _IO_FILE *_IO_stdin attribute_hidden;
-extern _IO_FILE *_IO_stdout attribute_hidden;
-extern _IO_FILE *_IO_stderr attribute_hidden;
-#endif
-
-
-/* Functions to do I/O and file management for a stream. */
-
-/* Read NBYTES bytes from COOKIE into a buffer pointed to by BUF.
- Return number of bytes read. */
-typedef __ssize_t __io_read_fn (void *__cookie, char *__buf, size_t __nbytes);
-
-/* Write N bytes pointed to by BUF to COOKIE. Write all N bytes
- unless there is an error. Return number of bytes written. If
- there is an error, return 0 and do not write anything. If the file
- has been opened for append (__mode.__append set), then set the file
- pointer to the end of the file and then do the write; if not, just
- write at the current file pointer. */
-typedef __ssize_t __io_write_fn (void *__cookie, const char *__buf,
- size_t __n);
-
-/* Move COOKIE's file position to *POS bytes from the
- beginning of the file (if W is SEEK_SET),
- the current position (if W is SEEK_CUR),
- or the end of the file (if W is SEEK_END).
- Set *POS to the new file position.
- Returns zero if successful, nonzero if not. */
-typedef int __io_seek_fn (void *__cookie, _IO_off64_t *__pos, int __w);
-
-/* Close COOKIE. */
-typedef int __io_close_fn (void *__cookie);
-
-
-#ifdef _GNU_SOURCE
-/* User-visible names for the above. */
-typedef __io_read_fn cookie_read_function_t;
-typedef __io_write_fn cookie_write_function_t;
-typedef __io_seek_fn cookie_seek_function_t;
-typedef __io_close_fn cookie_close_function_t;
-
-/* The structure with the cookie function pointers. */
-typedef struct
-{
- __io_read_fn *read; /* Read bytes. */
- __io_write_fn *write; /* Write bytes. */
- __io_seek_fn *seek; /* Seek/tell file position. */
- __io_close_fn *close; /* Close file. */
-} _IO_cookie_io_functions_t;
-typedef _IO_cookie_io_functions_t cookie_io_functions_t;
+extern FILE *_IO_stdin attribute_hidden;
+extern FILE *_IO_stdout attribute_hidden;
+extern FILE *_IO_stderr attribute_hidden;
struct _IO_cookie_file;
/* Initialize one of those. */
extern void _IO_cookie_init (struct _IO_cookie_file *__cfile, int __read_write,
- void *__cookie, _IO_cookie_io_functions_t __fns);
-#endif
+ void *__cookie, cookie_io_functions_t __fns);
+
+extern int __underflow (FILE *);
+extern wint_t __wunderflow (FILE *);
+extern wint_t __wuflow (FILE *);
+extern wint_t __woverflow (FILE *, wint_t);
+
+#define _IO_getc_unlocked(_fp) __getc_unlocked_body (_fp)
+#define _IO_peekc_unlocked(_fp) \
+ (__glibc_unlikely ((_fp)->_IO_read_ptr >= (_fp)->_IO_read_end) \
+ && __underflow (_fp) == EOF \
+ ? EOF \
+ : *(unsigned char *) (_fp)->_IO_read_ptr)
+#define _IO_putc_unlocked(_ch, _fp) __putc_unlocked_body (_ch, _fp)
+
+# define _IO_getwc_unlocked(_fp) \
+ (__glibc_unlikely ((_fp)->_wide_data == NULL \
+ || ((_fp)->_wide_data->_IO_read_ptr \
+ >= (_fp)->_wide_data->_IO_read_end)) \
+ ? __wuflow (_fp) : (wint_t) *(_fp)->_wide_data->_IO_read_ptr++)
+# define _IO_putwc_unlocked(_wch, _fp) \
+ (__glibc_unlikely ((_fp)->_wide_data == NULL \
+ || ((_fp)->_wide_data->_IO_write_ptr \
+ >= (_fp)->_wide_data->_IO_write_end)) \
+ ? __woverflow (_fp, _wch) \
+ : (wint_t) (*(_fp)->_wide_data->_IO_write_ptr++ = (_wch)))
+#define _IO_feof_unlocked(_fp) __feof_unlocked_body (_fp)
+#define _IO_ferror_unlocked(_fp) __ferror_unlocked_body (_fp)
-#ifdef __cplusplus
-extern "C" {
-#endif
+extern int _IO_getc (FILE *__fp);
+extern int _IO_putc (int __c, FILE *__fp);
+extern int _IO_feof (FILE *__fp) __THROW;
+extern int _IO_ferror (FILE *__fp) __THROW;
-extern int __underflow (_IO_FILE *);
-extern int __uflow (_IO_FILE *);
-extern int __overflow (_IO_FILE *, int);
-#if defined _LIBC || defined _GLIBCPP_USE_WCHAR_T
-extern _IO_wint_t __wunderflow (_IO_FILE *);
-extern _IO_wint_t __wuflow (_IO_FILE *);
-extern _IO_wint_t __woverflow (_IO_FILE *, _IO_wint_t);
-#endif
+extern int _IO_peekc_locked (FILE *__fp);
-#if __GNUC__ >= 3
-# define _IO_BE(expr, res) __builtin_expect ((expr), res)
-#else
-# define _IO_BE(expr, res) (expr)
-#endif
+/* This one is for Emacs. */
+#define _IO_PENDING_OUTPUT_COUNT(_fp) \
+ ((_fp)->_IO_write_ptr - (_fp)->_IO_write_base)
-#define _IO_getc_unlocked(_fp) \
- (_IO_BE ((_fp)->_IO_read_ptr >= (_fp)->_IO_read_end, 0) \
- ? __uflow (_fp) : *(unsigned char *) (_fp)->_IO_read_ptr++)
-#define _IO_peekc_unlocked(_fp) \
- (_IO_BE ((_fp)->_IO_read_ptr >= (_fp)->_IO_read_end, 0) \
- && __underflow (_fp) == EOF ? EOF \
- : *(unsigned char *) (_fp)->_IO_read_ptr)
-#define _IO_putc_unlocked(_ch, _fp) \
- (_IO_BE ((_fp)->_IO_write_ptr >= (_fp)->_IO_write_end, 0) \
- ? __overflow (_fp, (unsigned char) (_ch)) \
- : (unsigned char) (*(_fp)->_IO_write_ptr++ = (_ch)))
-
-#if defined _LIBC || defined _GLIBCPP_USE_WCHAR_T
-# define _IO_getwc_unlocked(_fp) \
- (_IO_BE ((_fp)->_wide_data == NULL \
- || ((_fp)->_wide_data->_IO_read_ptr \
- >= (_fp)->_wide_data->_IO_read_end), 0) \
- ? __wuflow (_fp) : (_IO_wint_t) *(_fp)->_wide_data->_IO_read_ptr++)
-# define _IO_putwc_unlocked(_wch, _fp) \
- (_IO_BE ((_fp)->_wide_data == NULL \
- || ((_fp)->_wide_data->_IO_write_ptr \
- >= (_fp)->_wide_data->_IO_write_end), 0) \
- ? __woverflow (_fp, _wch) \
- : (_IO_wint_t) (*(_fp)->_wide_data->_IO_write_ptr++ = (_wch)))
+extern void _IO_flockfile (FILE *) __THROW;
+extern void _IO_funlockfile (FILE *) __THROW;
+extern int _IO_ftrylockfile (FILE *) __THROW;
+
+#define _IO_peekc(_fp) _IO_peekc_unlocked (_fp)
+#define _IO_flockfile(_fp) /**/
+#define _IO_funlockfile(_fp) /**/
+#define _IO_ftrylockfile(_fp) /**/
+#ifndef _IO_cleanup_region_start
+#define _IO_cleanup_region_start(_fct, _fp) /**/
+#endif
+#ifndef _IO_cleanup_region_end
+#define _IO_cleanup_region_end(_Doit) /**/
#endif
-#define _IO_feof_unlocked(__fp) (((__fp)->_flags & _IO_EOF_SEEN) != 0)
-#define _IO_ferror_unlocked(__fp) (((__fp)->_flags & _IO_ERR_SEEN) != 0)
+#define _IO_need_lock(_fp) \
+ (((_fp)->_flags2 & _IO_FLAGS2_NEED_LOCK) != 0)
-extern int _IO_getc (_IO_FILE *__fp);
-extern int _IO_putc (int __c, _IO_FILE *__fp);
-extern int _IO_feof (_IO_FILE *__fp) __THROW;
-extern int _IO_ferror (_IO_FILE *__fp) __THROW;
+extern int _IO_vfscanf (FILE * __restrict, const char * __restrict,
+ __gnuc_va_list, int *__restrict);
+extern int _IO_vfprintf (FILE *__restrict, const char *__restrict,
+ __gnuc_va_list);
+extern __ssize_t _IO_padn (FILE *, int, __ssize_t);
+extern size_t _IO_sgetn (FILE *, void *, size_t);
-extern int _IO_peekc_locked (_IO_FILE *__fp);
+extern off64_t _IO_seekoff (FILE *, off64_t, int, int);
+extern off64_t _IO_seekpos (FILE *, off64_t, int);
-/* This one is for Emacs. */
-#define _IO_PENDING_OUTPUT_COUNT(_fp) \
- ((_fp)->_IO_write_ptr - (_fp)->_IO_write_base)
+extern void _IO_free_backup_area (FILE *) __THROW;
-extern void _IO_flockfile (_IO_FILE *) __THROW;
-extern void _IO_funlockfile (_IO_FILE *) __THROW;
-extern int _IO_ftrylockfile (_IO_FILE *) __THROW;
-#ifdef _IO_MTSAFE_IO
-# define _IO_peekc(_fp) _IO_peekc_locked (_fp)
-# define _IO_flockfile(_fp) \
- if (((_fp)->_flags & _IO_USER_LOCK) == 0) _IO_flockfile (_fp)
-# define _IO_funlockfile(_fp) \
- if (((_fp)->_flags & _IO_USER_LOCK) == 0) _IO_funlockfile (_fp)
-#else
-# define _IO_peekc(_fp) _IO_peekc_unlocked (_fp)
-# define _IO_flockfile(_fp) /**/
-# define _IO_funlockfile(_fp) /**/
-# define _IO_ftrylockfile(_fp) /**/
-# define _IO_cleanup_region_start(_fct, _fp) /**/
-# define _IO_cleanup_region_end(_Doit) /**/
-#endif /* !_IO_MTSAFE_IO */
-
-extern int _IO_vfscanf (_IO_FILE * __restrict, const char * __restrict,
- _IO_va_list, int *__restrict);
-extern int _IO_vfprintf (_IO_FILE *__restrict, const char *__restrict,
- _IO_va_list);
-extern _IO_ssize_t _IO_padn (_IO_FILE *, int, _IO_ssize_t);
-extern _IO_size_t _IO_sgetn (_IO_FILE *, void *, _IO_size_t);
-
-extern _IO_off64_t _IO_seekoff (_IO_FILE *, _IO_off64_t, int, int);
-extern _IO_off64_t _IO_seekpos (_IO_FILE *, _IO_off64_t, int);
-
-extern void _IO_free_backup_area (_IO_FILE *) __THROW;
-
-#if defined _LIBC || defined _GLIBCPP_USE_WCHAR_T
-extern _IO_wint_t _IO_getwc (_IO_FILE *__fp);
-extern _IO_wint_t _IO_putwc (wchar_t __wc, _IO_FILE *__fp);
-extern int _IO_fwide (_IO_FILE *__fp, int __mode) __THROW;
-# if __GNUC__ >= 2
-/* While compiling glibc we have to handle compatibility with very old
- versions. */
-# if defined _LIBC && defined SHARED
-# include <shlib-compat.h>
-# if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_1)
-# define _IO_fwide_maybe_incompatible \
- (__builtin_expect (&_IO_stdin_used == NULL, 0))
+extern wint_t _IO_getwc (FILE *__fp);
+extern wint_t _IO_putwc (wchar_t __wc, FILE *__fp);
+extern int _IO_fwide (FILE *__fp, int __mode) __THROW;
+
+#if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_1)
+# define _IO_fwide_maybe_incompatible \
+ (__glibc_unlikely (&_IO_stdin_used == NULL))
extern const int _IO_stdin_used;
weak_extern (_IO_stdin_used);
-# endif
-# endif
-# ifndef _IO_fwide_maybe_incompatible
-# define _IO_fwide_maybe_incompatible (0)
-# endif
+#else
+# define _IO_fwide_maybe_incompatible (0)
+#endif
+
/* A special optimized version of the function above. It optimizes the
case of initializing an unoriented byte stream. */
-# define _IO_fwide(__fp, __mode) \
+#define _IO_fwide(__fp, __mode) \
({ int __result = (__mode); \
if (__result < 0 && ! _IO_fwide_maybe_incompatible) \
{ \
@@ -503,22 +296,51 @@ weak_extern (_IO_stdin_used);
else \
__result = _IO_fwide (__fp, __result); \
__result; })
-# endif
-extern int _IO_vfwscanf (_IO_FILE * __restrict, const wchar_t * __restrict,
- _IO_va_list, int *__restrict);
-extern int _IO_vfwprintf (_IO_FILE *__restrict, const wchar_t *__restrict,
- _IO_va_list);
-extern _IO_ssize_t _IO_wpadn (_IO_FILE *, wint_t, _IO_ssize_t);
-extern void _IO_free_wbackup_area (_IO_FILE *) __THROW;
-#endif
+extern int _IO_vfwscanf (FILE * __restrict, const wchar_t * __restrict,
+ __gnuc_va_list, int *__restrict);
+extern int _IO_vfwprintf (FILE *__restrict, const wchar_t *__restrict,
+ __gnuc_va_list);
+extern __ssize_t _IO_wpadn (FILE *, wint_t, __ssize_t);
+extern void _IO_free_wbackup_area (FILE *) __THROW;
#ifdef __LDBL_COMPAT
-# include <bits/libio-ldbl.h>
+__LDBL_REDIR_DECL (_IO_vfscanf)
+__LDBL_REDIR_DECL (_IO_vfprintf)
#endif
-#ifdef __cplusplus
-}
-#endif
+libc_hidden_proto (__overflow)
+libc_hidden_proto (__underflow)
+libc_hidden_proto (__uflow)
+libc_hidden_proto (__woverflow)
+libc_hidden_proto (__wunderflow)
+libc_hidden_proto (__wuflow)
+libc_hidden_proto (_IO_free_backup_area)
+libc_hidden_proto (_IO_free_wbackup_area)
+libc_hidden_proto (_IO_padn)
+libc_hidden_proto (_IO_putc)
+libc_hidden_proto (_IO_sgetn)
+libc_hidden_proto (_IO_vfprintf)
+libc_hidden_proto (_IO_vfscanf)
+
+#ifdef _IO_MTSAFE_IO
+# undef _IO_peekc
+# undef _IO_flockfile
+# undef _IO_funlockfile
+# undef _IO_ftrylockfile
+
+# define _IO_peekc(_fp) _IO_peekc_locked (_fp)
+# if _IO_lock_inexpensive
+# define _IO_flockfile(_fp) \
+ if (((_fp)->_flags & _IO_USER_LOCK) == 0) _IO_lock_lock (*(_fp)->_lock)
+# define _IO_funlockfile(_fp) \
+ if (((_fp)->_flags & _IO_USER_LOCK) == 0) _IO_lock_unlock (*(_fp)->_lock)
+# else
+# define _IO_flockfile(_fp) \
+ if (((_fp)->_flags & _IO_USER_LOCK) == 0) _IO_flockfile (_fp)
+# define _IO_funlockfile(_fp) \
+ if (((_fp)->_flags & _IO_USER_LOCK) == 0) _IO_funlockfile (_fp)
+# endif
+#endif /* _IO_MTSAFE_IO */
-#endif /* _IO_STDIO_H */
+#endif /* _LIBIO_H */