/* Define ISO C stdio on top of C++ iostreams.
- Copyright (C) 1991-2014 Free Software Foundation, Inc.
+ Copyright (C) 1991-2020 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
- <http://www.gnu.org/licenses/>. */
+ <https://www.gnu.org/licenses/>. */
/*
* ISO C99 Standard: 7.19 Input/output <stdio.h>
*/
#ifndef _STDIO_H
+#define _STDIO_H 1
-#if !defined __need_FILE && !defined __need___FILE
-# define _STDIO_H 1
-# include <features.h>
+#define __GLIBC_INTERNAL_STARTING_HEADER_IMPLEMENTATION
+#include <bits/libc-header-start.h>
__BEGIN_DECLS
-# define __need_size_t
-# define __need_NULL
-# include <stddef.h>
+#define __need_size_t
+#define __need_NULL
+#include <stddef.h>
-# include <bits/types.h>
-# define __need_FILE
-# define __need___FILE
-#endif /* Don't need FILE. */
+#define __need___va_list
+#include <stdarg.h>
+#include <bits/types.h>
+#include <bits/types/__fpos_t.h>
+#include <bits/types/__fpos64_t.h>
+#include <bits/types/__FILE.h>
+#include <bits/types/FILE.h>
+#include <bits/types/struct_FILE.h>
-#if !defined __FILE_defined && defined __need_FILE
-
-/* Define outside of namespace so the C++ is happy. */
-struct _IO_FILE;
-
-__BEGIN_NAMESPACE_STD
-/* The opaque type of streams. This is the definition used elsewhere. */
-typedef struct _IO_FILE FILE;
-__END_NAMESPACE_STD
-#if defined __USE_LARGEFILE64 || defined __USE_POSIX \
- || defined __USE_ISOC99 || defined __USE_XOPEN \
- || defined __USE_POSIX2
-__USING_NAMESPACE_STD(FILE)
+#ifdef __USE_GNU
+# include <bits/types/cookie_io_functions_t.h>
#endif
-# define __FILE_defined 1
-#endif /* FILE not defined. */
-#undef __need_FILE
-
-
-#if !defined ____FILE_defined && defined __need___FILE
-
-/* The opaque type of streams. This is the definition used elsewhere. */
-typedef struct _IO_FILE __FILE;
-
-# define ____FILE_defined 1
-#endif /* __FILE not defined. */
-#undef __need___FILE
-
-
-#ifdef _STDIO_H
-#define _STDIO_USES_IOSTREAM
-
-#include <libio.h>
-
#if defined __USE_XOPEN || defined __USE_XOPEN2K8
# ifdef __GNUC__
# ifndef _VA_LIST_DEFINED
-typedef _G_va_list va_list;
+typedef __gnuc_va_list va_list;
# define _VA_LIST_DEFINED
# endif
# else
# endif
#endif
-#ifdef __USE_XOPEN2K8
+#if defined __USE_UNIX98 || defined __USE_XOPEN2K
# ifndef __off_t_defined
# ifndef __USE_FILE_OFFSET64
typedef __off_t off_t;
typedef __off64_t off64_t;
# define __off64_t_defined
# endif
+#endif
+#ifdef __USE_XOPEN2K8
# ifndef __ssize_t_defined
typedef __ssize_t ssize_t;
# define __ssize_t_defined
#endif
/* The type of the second argument to `fgetpos' and `fsetpos'. */
-__BEGIN_NAMESPACE_STD
#ifndef __USE_FILE_OFFSET64
-typedef _G_fpos_t fpos_t;
+typedef __fpos_t fpos_t;
#else
-typedef _G_fpos64_t fpos_t;
+typedef __fpos64_t fpos_t;
#endif
-__END_NAMESPACE_STD
#ifdef __USE_LARGEFILE64
-typedef _G_fpos64_t fpos64_t;
+typedef __fpos64_t fpos64_t;
#endif
/* The possibilities for the third argument to `setvbuf'. */
/* Default buffer size. */
-#ifndef BUFSIZ
-# define BUFSIZ _IO_BUFSIZ
-#endif
+#define BUFSIZ 8192
-/* End of file character.
- Some things throughout the library rely on this being -1. */
-#ifndef EOF
-# define EOF (-1)
-#endif
+/* The value returned by fgetc and similar functions to indicate the
+ end of the file. */
+#define EOF (-1)
/* The possibilities for the third argument to `fseek'.
/* Standard streams. */
-extern struct _IO_FILE *stdin; /* Standard input stream. */
-extern struct _IO_FILE *stdout; /* Standard output stream. */
-extern struct _IO_FILE *stderr; /* Standard error output stream. */
+extern FILE *stdin; /* Standard input stream. */
+extern FILE *stdout; /* Standard output stream. */
+extern FILE *stderr; /* Standard error output stream. */
/* C89/C99 say they're macros. Make them happy. */
#define stdin stdin
#define stdout stdout
#define stderr stderr
-__BEGIN_NAMESPACE_STD
/* Remove file FILENAME. */
extern int remove (const char *__filename) __THROW;
/* Rename file OLD to NEW. */
extern int rename (const char *__old, const char *__new) __THROW;
-__END_NAMESPACE_STD
#ifdef __USE_ATFILE
/* Rename file OLD relative to OLDFD to NEW relative to NEWFD. */
const char *__new) __THROW;
#endif
-__BEGIN_NAMESPACE_STD
+#ifdef __USE_GNU
+/* Flags for renameat2. */
+# define RENAME_NOREPLACE (1 << 0)
+# define RENAME_EXCHANGE (1 << 1)
+# define RENAME_WHITEOUT (1 << 2)
+
+/* Rename file OLD relative to OLDFD to NEW relative to NEWFD, with
+ additional flags. */
+extern int renameat2 (int __oldfd, const char *__old, int __newfd,
+ const char *__new, unsigned int __flags) __THROW;
+#endif
+
/* Create a temporary file and open it read/write.
This function is a possible cancellation point and therefore not
/* Generate a temporary filename. */
extern char *tmpnam (char *__s) __THROW __wur;
-__END_NAMESPACE_STD
#ifdef __USE_MISC
/* This is the reentrant variant of `tmpnam'. The only difference is
#endif
-__BEGIN_NAMESPACE_STD
/* Close STREAM.
This function is a possible cancellation point and therefore not
This function is a possible cancellation point and therefore not
marked with __THROW. */
extern int fflush (FILE *__stream);
-__END_NAMESPACE_STD
#ifdef __USE_MISC
/* Faster versions when locking is not required.
#endif
-__BEGIN_NAMESPACE_STD
#ifndef __USE_FILE_OFFSET64
/* Open a file and create a new stream for it.
# define freopen freopen64
# endif
#endif
-__END_NAMESPACE_STD
#ifdef __USE_LARGEFILE64
extern FILE *fopen64 (const char *__restrict __filename,
const char *__restrict __modes) __wur;
and uses the given functions for input and output. */
extern FILE *fopencookie (void *__restrict __magic_cookie,
const char *__restrict __modes,
- _IO_cookie_io_functions_t __io_funcs) __THROW __wur;
+ cookie_io_functions_t __io_funcs) __THROW __wur;
#endif
-#ifdef __USE_XOPEN2K8
+#if defined __USE_XOPEN2K8 || __GLIBC_USE (LIB_EXT2)
/* Create a new stream that refers to a memory buffer. */
extern FILE *fmemopen (void *__s, size_t __len, const char *__modes)
__THROW __wur;
#endif
-__BEGIN_NAMESPACE_STD
/* If BUF is NULL, make STREAM unbuffered.
Else make it use buffer BUF, of size BUFSIZ. */
extern void setbuf (FILE *__restrict __stream, char *__restrict __buf) __THROW;
else allocate an internal buffer N bytes long. */
extern int setvbuf (FILE *__restrict __stream, char *__restrict __buf,
int __modes, size_t __n) __THROW;
-__END_NAMESPACE_STD
#ifdef __USE_MISC
/* If BUF is NULL, make STREAM unbuffered.
#endif
-__BEGIN_NAMESPACE_STD
/* Write formatted output to STREAM.
This function is a possible cancellation point and therefore not
This function is a possible cancellation point and therefore not
marked with __THROW. */
extern int vfprintf (FILE *__restrict __s, const char *__restrict __format,
- _G_va_list __arg);
+ __gnuc_va_list __arg);
/* Write formatted output to stdout from argument list ARG.
This function is a possible cancellation point and therefore not
marked with __THROW. */
-extern int vprintf (const char *__restrict __format, _G_va_list __arg);
+extern int vprintf (const char *__restrict __format, __gnuc_va_list __arg);
/* Write formatted output to S from argument list ARG. */
extern int vsprintf (char *__restrict __s, const char *__restrict __format,
- _G_va_list __arg) __THROWNL;
-__END_NAMESPACE_STD
+ __gnuc_va_list __arg) __THROWNL;
#if defined __USE_ISOC99 || defined __USE_UNIX98
-__BEGIN_NAMESPACE_C99
/* Maximum chars of output to write in MAXLEN. */
extern int snprintf (char *__restrict __s, size_t __maxlen,
const char *__restrict __format, ...)
__THROWNL __attribute__ ((__format__ (__printf__, 3, 4)));
extern int vsnprintf (char *__restrict __s, size_t __maxlen,
- const char *__restrict __format, _G_va_list __arg)
+ const char *__restrict __format, __gnuc_va_list __arg)
__THROWNL __attribute__ ((__format__ (__printf__, 3, 0)));
-__END_NAMESPACE_C99
#endif
-#ifdef __USE_GNU
+#if __GLIBC_USE (LIB_EXT2)
/* Write formatted output to a string dynamically allocated with `malloc'.
Store the address of the string in *PTR. */
extern int vasprintf (char **__restrict __ptr, const char *__restrict __f,
- _G_va_list __arg)
+ __gnuc_va_list __arg)
__THROWNL __attribute__ ((__format__ (__printf__, 2, 0))) __wur;
extern int __asprintf (char **__restrict __ptr,
const char *__restrict __fmt, ...)
#ifdef __USE_XOPEN2K8
/* Write formatted output to a file descriptor. */
extern int vdprintf (int __fd, const char *__restrict __fmt,
- _G_va_list __arg)
+ __gnuc_va_list __arg)
__attribute__ ((__format__ (__printf__, 2, 0)));
extern int dprintf (int __fd, const char *__restrict __fmt, ...)
__attribute__ ((__format__ (__printf__, 2, 3)));
#endif
-__BEGIN_NAMESPACE_STD
/* Read formatted input from STREAM.
This function is a possible cancellation point and therefore not
extern int sscanf (const char *__restrict __s,
const char *__restrict __format, ...) __THROW;
-#if defined __USE_ISOC99 && !defined __USE_GNU \
- && (!defined __LDBL_COMPAT || !defined __REDIRECT) \
- && (defined __STRICT_ANSI__ || defined __USE_XOPEN2K)
+/* For historical reasons, the C99-compliant versions of the scanf
+ functions are at alternative names. When __LDBL_COMPAT or
+ __LDOUBLE_REDIRECTS_TO_FLOAT128_ABI are in effect, this is handled in
+ bits/stdio-ldbl.h. */
+#include <bits/floatn.h>
+#if !__GLIBC_USE (DEPRECATED_SCANF) && !defined __LDBL_COMPAT \
+ && __LDOUBLE_REDIRECTS_TO_FLOAT128_ABI == 0
# ifdef __REDIRECT
-/* For strict ISO C99 or POSIX compliance disallow %as, %aS and %a[
- GNU extension which conflicts with valid %a followed by letter
- s, S or [. */
extern int __REDIRECT (fscanf, (FILE *__restrict __stream,
const char *__restrict __format, ...),
__isoc99_fscanf) __wur;
# endif
#endif
-__END_NAMESPACE_STD
-
#ifdef __USE_ISOC99
-__BEGIN_NAMESPACE_C99
/* Read formatted input from S into argument list ARG.
This function is a possible cancellation point and therefore not
marked with __THROW. */
extern int vfscanf (FILE *__restrict __s, const char *__restrict __format,
- _G_va_list __arg)
+ __gnuc_va_list __arg)
__attribute__ ((__format__ (__scanf__, 2, 0))) __wur;
/* Read formatted input from stdin into argument list ARG.
This function is a possible cancellation point and therefore not
marked with __THROW. */
-extern int vscanf (const char *__restrict __format, _G_va_list __arg)
+extern int vscanf (const char *__restrict __format, __gnuc_va_list __arg)
__attribute__ ((__format__ (__scanf__, 1, 0))) __wur;
/* Read formatted input from S into argument list ARG. */
extern int vsscanf (const char *__restrict __s,
- const char *__restrict __format, _G_va_list __arg)
+ const char *__restrict __format, __gnuc_va_list __arg)
__THROW __attribute__ ((__format__ (__scanf__, 2, 0)));
-# if !defined __USE_GNU \
- && (!defined __LDBL_COMPAT || !defined __REDIRECT) \
- && (defined __STRICT_ANSI__ || defined __USE_XOPEN2K)
-# ifdef __REDIRECT
-/* For strict ISO C99 or POSIX compliance disallow %as, %aS and %a[
- GNU extension which conflicts with valid %a followed by letter
- s, S or [. */
+/* Same redirection as above for the v*scanf family. */
+# if !__GLIBC_USE (DEPRECATED_SCANF)
+# if defined __REDIRECT && !defined __LDBL_COMPAT \
+ && __LDOUBLE_REDIRECTS_TO_FLOAT128_ABI == 0
extern int __REDIRECT (vfscanf,
(FILE *__restrict __s,
- const char *__restrict __format, _G_va_list __arg),
+ const char *__restrict __format, __gnuc_va_list __arg),
__isoc99_vfscanf)
__attribute__ ((__format__ (__scanf__, 2, 0))) __wur;
extern int __REDIRECT (vscanf, (const char *__restrict __format,
- _G_va_list __arg), __isoc99_vscanf)
+ __gnuc_va_list __arg), __isoc99_vscanf)
__attribute__ ((__format__ (__scanf__, 1, 0))) __wur;
extern int __REDIRECT_NTH (vsscanf,
(const char *__restrict __s,
const char *__restrict __format,
- _G_va_list __arg), __isoc99_vsscanf)
+ __gnuc_va_list __arg), __isoc99_vsscanf)
__attribute__ ((__format__ (__scanf__, 2, 0)));
-# else
+# elif !defined __REDIRECT
extern int __isoc99_vfscanf (FILE *__restrict __s,
const char *__restrict __format,
- _G_va_list __arg) __wur;
+ __gnuc_va_list __arg) __wur;
extern int __isoc99_vscanf (const char *__restrict __format,
- _G_va_list __arg) __wur;
+ __gnuc_va_list __arg) __wur;
extern int __isoc99_vsscanf (const char *__restrict __s,
const char *__restrict __format,
- _G_va_list __arg) __THROW;
+ __gnuc_va_list __arg) __THROW;
# define vfscanf __isoc99_vfscanf
# define vscanf __isoc99_vscanf
# define vsscanf __isoc99_vsscanf
# endif
# endif
-
-__END_NAMESPACE_C99
#endif /* Use ISO C9x. */
-__BEGIN_NAMESPACE_STD
/* Read a character from STREAM.
These functions are possible cancellation points and therefore not
This function is a possible cancellation point and therefore not
marked with __THROW. */
extern int getchar (void);
-__END_NAMESPACE_STD
-/* The C standard explicitly says this is a macro, so we always do the
- optimization for it. */
-#define getc(_fp) _IO_getc (_fp)
-
-#ifdef __USE_POSIX
+#ifdef __USE_POSIX199506
/* These are defined in POSIX.1:1996.
These functions are possible cancellation points and therefore not
#endif /* Use MISC. */
-__BEGIN_NAMESPACE_STD
/* Write a character to STREAM.
These functions are possible cancellation points and therefore not
This function is a possible cancellation point and therefore not
marked with __THROW. */
extern int putchar (int __c);
-__END_NAMESPACE_STD
-
-/* The C standard explicitly says this can be a macro,
- so we always do the optimization for it. */
-#define putc(_ch, _fp) _IO_putc (_ch, _fp)
#ifdef __USE_MISC
/* Faster version when locking is not necessary.
extern int fputc_unlocked (int __c, FILE *__stream);
#endif /* Use MISC. */
-#ifdef __USE_POSIX
+#ifdef __USE_POSIX199506
/* These are defined in POSIX.1:1996.
These functions are possible cancellation points and therefore not
#endif
-__BEGIN_NAMESPACE_STD
/* Get a newline-terminated string of finite length from STREAM.
This function is a possible cancellation point and therefore not
marked with __THROW. */
extern char *fgets (char *__restrict __s, int __n, FILE *__restrict __stream)
- __wur;
+ __wur __attr_access ((__write_only__, 1, 2));
-#if !defined __USE_ISOC11 \
- || (defined __cplusplus && __cplusplus <= 201103L)
+#if __GLIBC_USE (DEPRECATED_GETS)
/* Get a newline-terminated string from stdin, removing the newline.
- DO NOT USE THIS FUNCTION!! There is no limit on how much it will read.
- The function has been officially removed in ISO C11. This opportunity
- is used to also remove it from the GNU feature list. It is now only
- available when explicitly using an old ISO C, Unix, or POSIX standard.
- GCC defines _GNU_SOURCE when building C++ code and the function is still
- in C++11, so it is also available for C++.
+ This function is impossible to use safely. It has been officially
+ removed from ISO C11 and ISO C++14, and we have also removed it
+ from the _GNU_SOURCE feature list. It remains available when
+ explicitly using an old ISO C, Unix, or POSIX standard.
This function is a possible cancellation point and therefore not
marked with __THROW. */
extern char *gets (char *__s) __wur __attribute_deprecated__;
#endif
-__END_NAMESPACE_STD
#ifdef __USE_GNU
/* This function does the same as `fgets' but does not lock the stream.
or due to the implementation it is a cancellation point and
therefore not marked with __THROW. */
extern char *fgets_unlocked (char *__restrict __s, int __n,
- FILE *__restrict __stream) __wur;
+ FILE *__restrict __stream) __wur
+ __attr_access ((__write_only__, 1, 2));
#endif
-#ifdef __USE_XOPEN2K8
+#if defined __USE_XOPEN2K8 || __GLIBC_USE (LIB_EXT2)
/* Read up to (and including) a DELIMITER from STREAM into *LINEPTR
(and null-terminate it). *LINEPTR is a pointer returned from malloc (or
NULL), pointing to *N characters of space. It is realloc'd as
cancellation point. But due to similarity with an POSIX interface
or due to the implementation they are cancellation points and
therefore not marked with __THROW. */
-extern _IO_ssize_t __getdelim (char **__restrict __lineptr,
- size_t *__restrict __n, int __delimiter,
- FILE *__restrict __stream) __wur;
-extern _IO_ssize_t getdelim (char **__restrict __lineptr,
- size_t *__restrict __n, int __delimiter,
- FILE *__restrict __stream) __wur;
+extern __ssize_t __getdelim (char **__restrict __lineptr,
+ size_t *__restrict __n, int __delimiter,
+ FILE *__restrict __stream) __wur;
+extern __ssize_t getdelim (char **__restrict __lineptr,
+ size_t *__restrict __n, int __delimiter,
+ FILE *__restrict __stream) __wur;
/* Like `getdelim', but reads up to a newline.
cancellation point. But due to similarity with an POSIX interface
or due to the implementation it is a cancellation point and
therefore not marked with __THROW. */
-extern _IO_ssize_t getline (char **__restrict __lineptr,
- size_t *__restrict __n,
- FILE *__restrict __stream) __wur;
+extern __ssize_t getline (char **__restrict __lineptr,
+ size_t *__restrict __n,
+ FILE *__restrict __stream) __wur;
#endif
-__BEGIN_NAMESPACE_STD
/* Write a string to STREAM.
This function is a possible cancellation point and therefore not
marked with __THROW. */
extern size_t fwrite (const void *__restrict __ptr, size_t __size,
size_t __n, FILE *__restrict __s);
-__END_NAMESPACE_STD
#ifdef __USE_GNU
/* This function does the same as `fputs' but does not lock the stream.
#endif
-__BEGIN_NAMESPACE_STD
/* Seek to a certain position on STREAM.
This function is a possible cancellation point and therefore not
This function is a possible cancellation point and therefore not
marked with __THROW. */
extern void rewind (FILE *__stream);
-__END_NAMESPACE_STD
/* The Single Unix Specification, Version 2, specifies an alternative,
more adequate interface for the two functions above which deal with
# endif
#endif
-__BEGIN_NAMESPACE_STD
#ifndef __USE_FILE_OFFSET64
/* Get STREAM's position.
# define fsetpos fsetpos64
# endif
#endif
-__END_NAMESPACE_STD
#ifdef __USE_LARGEFILE64
extern int fseeko64 (FILE *__stream, __off64_t __off, int __whence);
extern int fsetpos64 (FILE *__stream, const fpos64_t *__pos);
#endif
-__BEGIN_NAMESPACE_STD
/* Clear the error and EOF indicators for STREAM. */
extern void clearerr (FILE *__stream) __THROW;
/* Return the EOF indicator for STREAM. */
extern int feof (FILE *__stream) __THROW __wur;
/* Return the error indicator for STREAM. */
extern int ferror (FILE *__stream) __THROW __wur;
-__END_NAMESPACE_STD
#ifdef __USE_MISC
/* Faster versions when locking is not required. */
#endif
-__BEGIN_NAMESPACE_STD
/* Print a message describing the meaning of the value of errno.
This function is a possible cancellation point and therefore not
marked with __THROW. */
extern void perror (const char *__s);
-__END_NAMESPACE_STD
/* Provide the declarations for `sys_errlist' and `sys_nerr' if they
are available on this system. Even if available, these variables
#endif /* Use POSIX. */
-#ifdef __USE_XOPEN
+#if (defined __USE_XOPEN && !defined __USE_XOPEN2K) || defined __USE_GNU
/* Return the name of the current user. */
extern char *cuserid (char *__s);
#endif /* Use X/Open, but not issue 6. */
__THROWNL __attribute__ ((__format__ (__printf__, 2, 3)));
extern int obstack_vprintf (struct obstack *__restrict __obstack,
const char *__restrict __format,
- _G_va_list __args)
+ __gnuc_va_list __args)
__THROWNL __attribute__ ((__format__ (__printf__, 2, 0)));
#endif /* Use GNU. */
-#ifdef __USE_POSIX
+#ifdef __USE_POSIX199506
/* These are defined in POSIX.1:1996. */
/* Acquire ownership of STREAM. */
#endif /* POSIX */
#if defined __USE_XOPEN && !defined __USE_XOPEN2K && !defined __USE_GNU
-/* The X/Open standard requires some functions and variables to be
- declared here which do not belong into this header. But we have to
- follow. In GNU mode we don't do this nonsense. */
-# define __need_getopt
-# include <getopt.h>
-#endif /* X/Open, but not issue 6 and not for GNU. */
+/* X/Open Issues 1-5 required getopt to be declared in this
+ header. It was removed in Issue 6. GNU follows Issue 6. */
+# include <bits/getopt_posix.h>
+#endif
+
+/* Slow-path routines used by the optimized inline functions in
+ bits/stdio.h. */
+extern int __uflow (FILE *);
+extern int __overflow (FILE *, int);
/* If we are compiling with optimizing read this file. It contains
several optimizing inline functions and macros. */
#ifdef __USE_EXTERN_INLINES
# include <bits/stdio.h>
#endif
-#if __USE_FORTIFY_LEVEL > 0 && defined __extern_always_inline
+#if __USE_FORTIFY_LEVEL > 0 && defined __fortify_function
# include <bits/stdio2.h>
#endif
-#ifdef __LDBL_COMPAT
+
+#include <bits/floatn.h>
+#if defined __LDBL_COMPAT || __LDOUBLE_REDIRECTS_TO_FLOAT128_ABI == 1
# include <bits/stdio-ldbl.h>
#endif
__END_DECLS
#endif /* <stdio.h> included. */
-
-#endif /* !_STDIO_H */
projects / thirdparty / glibc.git / blobdiff