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Edit File : stdio2.h \| Size : 12.25 KB
/* Checking macros for stdio functions. Copyright (C) 2004-2018 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 modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. The GNU C Library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. 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/>. / #ifndef _BITS_STDIO2_H #define _BITS_STDIO2_H 1 #ifndef _STDIO_H # error "Never include <bits/stdio2.h> directly; use <stdio.h> instead." #endif extern int __sprintf_chk (char __restrict __s, int __flag, size_t __slen, const char __restrict __format, ...) __THROW; extern int __vsprintf_chk (char __restrict __s, int __flag, size_t __slen, const char __restrict __format, __gnuc_va_list __ap) __THROW; #ifdef __va_arg_pack __fortify_function int __NTH (sprintf (char __restrict __s, const char __restrict __fmt, ...)) { return __builtin___sprintf_chk (__s, __USE_FORTIFY_LEVEL - 1, __glibc_objsize (__s), __fmt, __va_arg_pack ()); } #elif !defined __cplusplus # define sprintf(str, ...) \ __builtin___sprintf_chk (str, __USE_FORTIFY_LEVEL - 1, \ __glibc_objsize (str), __VA_ARGS__) #endif __fortify_function int __NTH (vsprintf (char __restrict __s, const char __restrict __fmt, __gnuc_va_list __ap)) { return __builtin___vsprintf_chk (__s, __USE_FORTIFY_LEVEL - 1, __glibc_objsize (__s), __fmt, __ap); } #if defined __USE_ISOC99 \|\| defined __USE_UNIX98 extern int __snprintf_chk (char __restrict __s, size_t __n, int __flag, size_t __slen, const char __restrict __format, ...) __THROW; extern int __vsnprintf_chk (char __restrict __s, size_t __n, int __flag, size_t __slen, const char __restrict __format, __gnuc_va_list __ap) __THROW; # ifdef __va_arg_pack __fortify_function int __NTH (snprintf (char __restrict __s, size_t __n, const char __restrict __fmt, ...)) { return __builtin___snprintf_chk (__s, __n, __USE_FORTIFY_LEVEL - 1, __glibc_objsize (__s), __fmt, __va_arg_pack ()); } # elif !defined __cplusplus # define snprintf(str, len, ...) \ __builtin___snprintf_chk (str, len, __USE_FORTIFY_LEVEL - 1, \ __glibc_objsize (str), __VA_ARGS__) # endif __fortify_function int __NTH (vsnprintf (char __restrict __s, size_t __n, const char __restrict __fmt, __gnuc_va_list __ap)) { return __builtin___vsnprintf_chk (__s, __n, __USE_FORTIFY_LEVEL - 1, __glibc_objsize (__s), __fmt, __ap); } #endif #if __USE_FORTIFY_LEVEL > 1 extern int __fprintf_chk (FILE __restrict __stream, int __flag, const char __restrict __format, ...); extern int __printf_chk (int __flag, const char __restrict __format, ...); extern int __vfprintf_chk (FILE __restrict __stream, int __flag, const char __restrict __format, __gnuc_va_list __ap); extern int __vprintf_chk (int __flag, const char __restrict __format, __gnuc_va_list __ap); # ifdef __va_arg_pack __fortify_function int fprintf (FILE __restrict __stream, const char __restrict __fmt, ...) { return __fprintf_chk (__stream, __USE_FORTIFY_LEVEL - 1, __fmt, __va_arg_pack ()); } __fortify_function int printf (const char __restrict __fmt, ...) { return __printf_chk (__USE_FORTIFY_LEVEL - 1, __fmt, __va_arg_pack ()); } # elif !defined __cplusplus # define printf(...) \ __printf_chk (__USE_FORTIFY_LEVEL - 1, __VA_ARGS__) # define fprintf(stream, ...) \ __fprintf_chk (stream, __USE_FORTIFY_LEVEL - 1, __VA_ARGS__) # endif __fortify_function int vprintf (const char __restrict __fmt, __gnuc_va_list __ap) { #ifdef __USE_EXTERN_INLINES return __vfprintf_chk (stdout, __USE_FORTIFY_LEVEL - 1, __fmt, __ap); #else return __vprintf_chk (__USE_FORTIFY_LEVEL - 1, __fmt, __ap); #endif } __fortify_function int vfprintf (FILE __restrict __stream, const char __restrict __fmt, __gnuc_va_list __ap) { return __vfprintf_chk (__stream, __USE_FORTIFY_LEVEL - 1, __fmt, __ap); } # ifdef __USE_XOPEN2K8 extern int __dprintf_chk (int __fd, int __flag, const char __restrict __fmt, ...) __attribute__ ((__format__ (__printf__, 3, 4))); extern int __vdprintf_chk (int __fd, int __flag, const char __restrict __fmt, __gnuc_va_list __arg) __attribute__ ((__format__ (__printf__, 3, 0))); # ifdef __va_arg_pack __fortify_function int dprintf (int __fd, const char __restrict __fmt, ...) { return __dprintf_chk (__fd, __USE_FORTIFY_LEVEL - 1, __fmt, __va_arg_pack ()); } # elif !defined __cplusplus # define dprintf(fd, ...) \ __dprintf_chk (fd, __USE_FORTIFY_LEVEL - 1, __VA_ARGS__) # endif __fortify_function int vdprintf (int __fd, const char __restrict __fmt, __gnuc_va_list __ap) { return __vdprintf_chk (__fd, __USE_FORTIFY_LEVEL - 1, __fmt, __ap); } # endif # ifdef __USE_GNU extern int __asprintf_chk (char __restrict __ptr, int __flag, const char __restrict __fmt, ...) __THROW __attribute__ ((__format__ (__printf__, 3, 4))) __wur; extern int __vasprintf_chk (char *__restrict __ptr, int __flag, const char __restrict __fmt, __gnuc_va_list __arg) __THROW __attribute__ ((__format__ (__printf__, 3, 0))) __wur; extern int __obstack_printf_chk (struct obstack __restrict __obstack, int __flag, const char __restrict __format, ...) __THROW __attribute__ ((__format__ (__printf__, 3, 4))); extern int __obstack_vprintf_chk (struct obstack __restrict __obstack, int __flag, const char __restrict __format, __gnuc_va_list __args) __THROW __attribute__ ((__format__ (__printf__, 3, 0))); # ifdef __va_arg_pack __fortify_function int __NTH (asprintf (char *__restrict __ptr, const char __restrict __fmt, ...)) { return __asprintf_chk (__ptr, __USE_FORTIFY_LEVEL - 1, __fmt, __va_arg_pack ()); } __fortify_function int __NTH (__asprintf (char *__restrict __ptr, const char __restrict __fmt, ...)) { return __asprintf_chk (__ptr, __USE_FORTIFY_LEVEL - 1, __fmt, __va_arg_pack ()); } __fortify_function int __NTH (obstack_printf (struct obstack __restrict __obstack, const char __restrict __fmt, ...)) { return __obstack_printf_chk (__obstack, __USE_FORTIFY_LEVEL - 1, __fmt, __va_arg_pack ()); } # elif !defined __cplusplus # define asprintf(ptr, ...) \ __asprintf_chk (ptr, __USE_FORTIFY_LEVEL - 1, __VA_ARGS__) # define __asprintf(ptr, ...) \ __asprintf_chk (ptr, __USE_FORTIFY_LEVEL - 1, __VA_ARGS__) # define obstack_printf(obstack, ...) \ __obstack_printf_chk (obstack, __USE_FORTIFY_LEVEL - 1, __VA_ARGS__) # endif __fortify_function int __NTH (vasprintf (char *__restrict __ptr, const char __restrict __fmt, __gnuc_va_list __ap)) { return __vasprintf_chk (__ptr, __USE_FORTIFY_LEVEL - 1, __fmt, __ap); } __fortify_function int __NTH (obstack_vprintf (struct obstack __restrict __obstack, const char __restrict __fmt, __gnuc_va_list __ap)) { return __obstack_vprintf_chk (__obstack, __USE_FORTIFY_LEVEL - 1, __fmt, __ap); } # endif #endif #if __GLIBC_USE (DEPRECATED_GETS) extern char __gets_chk (char __str, size_t) __wur; extern char __REDIRECT (__gets_warn, (char __str), gets) __wur __warnattr ("please use fgets or getline instead, gets can't " "specify buffer size"); __fortify_function __wur char * gets (char __str) { if (__glibc_objsize (__str) != (size_t) -1) return __gets_chk (__str, __glibc_objsize (__str)); return __gets_warn (__str); } #endif extern char __fgets_chk (char __restrict __s, size_t __size, int __n, FILE __restrict __stream) __wur; extern char __REDIRECT (__fgets_alias, (char __restrict __s, int __n, FILE __restrict __stream), fgets) __wur; extern char __REDIRECT (__fgets_chk_warn, (char __restrict __s, size_t __size, int __n, FILE __restrict __stream), __fgets_chk) __wur __warnattr ("fgets called with bigger size than length " "of destination buffer"); __fortify_function __wur char * fgets (char __restrict __s, int __n, FILE __restrict __stream) { size_t sz = __glibc_objsize (__s); if (__glibc_safe_or_unknown_len (__n, sizeof (char), sz)) return __fgets_alias (__s, __n, __stream); if (__glibc_unsafe_len (__n, sizeof (char), sz)) return __fgets_chk_warn (__s, sz, __n, __stream); return __fgets_chk (__s, sz, __n, __stream); } extern size_t __fread_chk (void __restrict __ptr, size_t __ptrlen, size_t __size, size_t __n, FILE __restrict __stream) __wur; extern size_t __REDIRECT (__fread_alias, (void __restrict __ptr, size_t __size, size_t __n, FILE __restrict __stream), fread) __wur; extern size_t __REDIRECT (__fread_chk_warn, (void __restrict __ptr, size_t __ptrlen, size_t __size, size_t __n, FILE __restrict __stream), __fread_chk) __wur __warnattr ("fread called with bigger size * nmemb than length " "of destination buffer"); __fortify_function __wur size_t fread (void __restrict __ptr, size_t __size, size_t __n, FILE __restrict __stream) { size_t sz = __glibc_objsize0 (__ptr); if (__glibc_safe_or_unknown_len (__n, __size, sz)) return __fread_alias (__ptr, __size, __n, __stream); if (__glibc_unsafe_len (__n, __size, sz)) return __fread_chk_warn (__ptr, sz, __size, __n, __stream); return __fread_chk (__ptr, sz, __size, __n, __stream); } #ifdef __USE_GNU extern char __fgets_unlocked_chk (char __restrict __s, size_t __size, int __n, FILE __restrict __stream) __wur; extern char __REDIRECT (__fgets_unlocked_alias, (char __restrict __s, int __n, FILE __restrict __stream), fgets_unlocked) __wur; extern char __REDIRECT (__fgets_unlocked_chk_warn, (char __restrict __s, size_t __size, int __n, FILE __restrict __stream), __fgets_unlocked_chk) __wur __warnattr ("fgets_unlocked called with bigger size than length " "of destination buffer"); __fortify_function __wur char fgets_unlocked (char __restrict __s, int __n, FILE __restrict __stream) { size_t sz = __glibc_objsize (__s); if (__glibc_safe_or_unknown_len (__n, sizeof (char), sz)) return __fgets_unlocked_alias (__s, __n, __stream); if (__glibc_unsafe_len (__n, sizeof (char), sz)) return __fgets_unlocked_chk_warn (__s, sz, __n, __stream); return __fgets_unlocked_chk (__s, sz, __n, __stream); } #endif #ifdef __USE_MISC # undef fread_unlocked extern size_t __fread_unlocked_chk (void __restrict __ptr, size_t __ptrlen, size_t __size, size_t __n, FILE __restrict __stream) __wur; extern size_t __REDIRECT (__fread_unlocked_alias, (void __restrict __ptr, size_t __size, size_t __n, FILE __restrict __stream), fread_unlocked) __wur; extern size_t __REDIRECT (__fread_unlocked_chk_warn, (void __restrict __ptr, size_t __ptrlen, size_t __size, size_t __n, FILE __restrict __stream), __fread_unlocked_chk) __wur __warnattr ("fread_unlocked called with bigger size * nmemb than " "length of destination buffer"); __fortify_function __wur size_t fread_unlocked (void __restrict __ptr, size_t __size, size_t __n, FILE __restrict __stream) { size_t sz = __glibc_objsize0 (__ptr); if (__glibc_safe_or_unknown_len (__n, __size, sz)) { # ifdef __USE_EXTERN_INLINES if (__builtin_constant_p (__size) && __builtin_constant_p (__n) && (__size \| __n) < (((size_t) 1) << (8 * sizeof (size_t) / 2)) && __size * __n <= 8) { size_t __cnt = __size * __n; char __cptr = (char ) __ptr; if (__cnt == 0) return 0; for (; __cnt > 0; --__cnt) { int __c = getc_unlocked (__stream); if (__c == EOF) break; __cptr++ = __c; } return (__cptr - (char ) __ptr) / __size; } # endif return __fread_unlocked_alias (__ptr, __size, __n, __stream); } if (__glibc_unsafe_len (__n, __size, sz)) return __fread_unlocked_chk_warn (__ptr, sz, __size, __n, __stream); return __fread_unlocked_chk (__ptr, sz, __size, __n, __stream); } #endif #endif /* bits/stdio2.h. */ Back

Edit File : stdio2.h | Size : 12.25 KB

/* Checking macros for stdio functions.
   Copyright (C) 2004-2018 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
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

The GNU C Library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.

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/>.  */

#ifndef _BITS_STDIO2_H
#define _BITS_STDIO2_H 1

#ifndef _STDIO_H
# error "Never include <bits/stdio2.h> directly; use <stdio.h> instead."
#endif

extern int __sprintf_chk (char *__restrict __s, int __flag, size_t __slen,
			  const char *__restrict __format, ...) __THROW;
extern int __vsprintf_chk (char *__restrict __s, int __flag, size_t __slen,
			   const char *__restrict __format,
			   __gnuc_va_list __ap) __THROW;

#ifdef __va_arg_pack
__fortify_function int
__NTH (sprintf (char *__restrict __s, const char *__restrict __fmt, ...))
{
  return __builtin___sprintf_chk (__s, __USE_FORTIFY_LEVEL - 1,
				  __glibc_objsize (__s), __fmt,
				  __va_arg_pack ());
}
#elif !defined __cplusplus
# define sprintf(str, ...) \
  __builtin___sprintf_chk (str, __USE_FORTIFY_LEVEL - 1,		      \
			   __glibc_objsize (str), __VA_ARGS__)
#endif

__fortify_function int
__NTH (vsprintf (char *__restrict __s, const char *__restrict __fmt,
		 __gnuc_va_list __ap))
{
  return __builtin___vsprintf_chk (__s, __USE_FORTIFY_LEVEL - 1,
				   __glibc_objsize (__s), __fmt, __ap);
}

#if defined __USE_ISOC99 || defined __USE_UNIX98

extern int __snprintf_chk (char *__restrict __s, size_t __n, int __flag,
			   size_t __slen, const char *__restrict __format,
			   ...) __THROW;
extern int __vsnprintf_chk (char *__restrict __s, size_t __n, int __flag,
			    size_t __slen, const char *__restrict __format,
			    __gnuc_va_list __ap) __THROW;

# ifdef __va_arg_pack
__fortify_function int
__NTH (snprintf (char *__restrict __s, size_t __n,
		 const char *__restrict __fmt, ...))
{
  return __builtin___snprintf_chk (__s, __n, __USE_FORTIFY_LEVEL - 1,
				   __glibc_objsize (__s), __fmt,
				   __va_arg_pack ());
}
# elif !defined __cplusplus
#  define snprintf(str, len, ...) \
  __builtin___snprintf_chk (str, len, __USE_FORTIFY_LEVEL - 1,		      \
			    __glibc_objsize (str), __VA_ARGS__)
# endif

__fortify_function int
__NTH (vsnprintf (char *__restrict __s, size_t __n,
		  const char *__restrict __fmt, __gnuc_va_list __ap))
{
  return __builtin___vsnprintf_chk (__s, __n, __USE_FORTIFY_LEVEL - 1,
				    __glibc_objsize (__s), __fmt, __ap);
}

#endif

#if __USE_FORTIFY_LEVEL > 1

extern int __fprintf_chk (FILE *__restrict __stream, int __flag,
			  const char *__restrict __format, ...);
extern int __printf_chk (int __flag, const char *__restrict __format, ...);
extern int __vfprintf_chk (FILE *__restrict __stream, int __flag,
			   const char *__restrict __format, __gnuc_va_list __ap);
extern int __vprintf_chk (int __flag, const char *__restrict __format,
			  __gnuc_va_list __ap);

# ifdef __va_arg_pack
__fortify_function int
fprintf (FILE *__restrict __stream, const char *__restrict __fmt, ...)
{
  return __fprintf_chk (__stream, __USE_FORTIFY_LEVEL - 1, __fmt,
			__va_arg_pack ());
}

__fortify_function int
printf (const char *__restrict __fmt, ...)
{
  return __printf_chk (__USE_FORTIFY_LEVEL - 1, __fmt, __va_arg_pack ());
}
# elif !defined __cplusplus
#  define printf(...) \
  __printf_chk (__USE_FORTIFY_LEVEL - 1, __VA_ARGS__)
#  define fprintf(stream, ...) \
  __fprintf_chk (stream, __USE_FORTIFY_LEVEL - 1, __VA_ARGS__)
# endif

__fortify_function int
vprintf (const char *__restrict __fmt, __gnuc_va_list __ap)
{
#ifdef __USE_EXTERN_INLINES
  return __vfprintf_chk (stdout, __USE_FORTIFY_LEVEL - 1, __fmt, __ap);
#else
  return __vprintf_chk (__USE_FORTIFY_LEVEL - 1, __fmt, __ap);
#endif
}

__fortify_function int
vfprintf (FILE *__restrict __stream,
	  const char *__restrict __fmt, __gnuc_va_list __ap)
{
  return __vfprintf_chk (__stream, __USE_FORTIFY_LEVEL - 1, __fmt, __ap);
}

# ifdef __USE_XOPEN2K8
extern int __dprintf_chk (int __fd, int __flag, const char *__restrict __fmt,
			  ...) __attribute__ ((__format__ (__printf__, 3, 4)));
extern int __vdprintf_chk (int __fd, int __flag,
			   const char *__restrict __fmt, __gnuc_va_list __arg)
     __attribute__ ((__format__ (__printf__, 3, 0)));

#  ifdef __va_arg_pack
__fortify_function int
dprintf (int __fd, const char *__restrict __fmt, ...)
{
  return __dprintf_chk (__fd, __USE_FORTIFY_LEVEL - 1, __fmt,
			__va_arg_pack ());
}
#  elif !defined __cplusplus
#   define dprintf(fd, ...) \
  __dprintf_chk (fd, __USE_FORTIFY_LEVEL - 1, __VA_ARGS__)
#  endif

__fortify_function int
vdprintf (int __fd, const char *__restrict __fmt, __gnuc_va_list __ap)
{
  return __vdprintf_chk (__fd, __USE_FORTIFY_LEVEL - 1, __fmt, __ap);
}
# endif

# ifdef __USE_GNU

extern int __asprintf_chk (char **__restrict __ptr, int __flag,
			   const char *__restrict __fmt, ...)
     __THROW __attribute__ ((__format__ (__printf__, 3, 4))) __wur;
extern int __vasprintf_chk (char **__restrict __ptr, int __flag,
			    const char *__restrict __fmt, __gnuc_va_list __arg)
     __THROW __attribute__ ((__format__ (__printf__, 3, 0))) __wur;
extern int __obstack_printf_chk (struct obstack *__restrict __obstack,
				 int __flag, const char *__restrict __format,
				 ...)
     __THROW __attribute__ ((__format__ (__printf__, 3, 4)));
extern int __obstack_vprintf_chk (struct obstack *__restrict __obstack,
				  int __flag,
				  const char *__restrict __format,
				  __gnuc_va_list __args)
     __THROW __attribute__ ((__format__ (__printf__, 3, 0)));

#  ifdef __va_arg_pack
__fortify_function int
__NTH (asprintf (char **__restrict __ptr, const char *__restrict __fmt, ...))
{
  return __asprintf_chk (__ptr, __USE_FORTIFY_LEVEL - 1, __fmt,
			 __va_arg_pack ());
}

__fortify_function int
__NTH (__asprintf (char **__restrict __ptr, const char *__restrict __fmt,
		   ...))
{
  return __asprintf_chk (__ptr, __USE_FORTIFY_LEVEL - 1, __fmt,
			 __va_arg_pack ());
}

__fortify_function int
__NTH (obstack_printf (struct obstack *__restrict __obstack,
		       const char *__restrict __fmt, ...))
{
  return __obstack_printf_chk (__obstack, __USE_FORTIFY_LEVEL - 1, __fmt,
			       __va_arg_pack ());
}
#  elif !defined __cplusplus
#   define asprintf(ptr, ...) \
  __asprintf_chk (ptr, __USE_FORTIFY_LEVEL - 1, __VA_ARGS__)
#   define __asprintf(ptr, ...) \
  __asprintf_chk (ptr, __USE_FORTIFY_LEVEL - 1, __VA_ARGS__)
#   define obstack_printf(obstack, ...) \
  __obstack_printf_chk (obstack, __USE_FORTIFY_LEVEL - 1, __VA_ARGS__)
#  endif

__fortify_function int
__NTH (vasprintf (char **__restrict __ptr, const char *__restrict __fmt,
		  __gnuc_va_list __ap))
{
  return __vasprintf_chk (__ptr, __USE_FORTIFY_LEVEL - 1, __fmt, __ap);
}

__fortify_function int
__NTH (obstack_vprintf (struct obstack *__restrict __obstack,
			const char *__restrict __fmt, __gnuc_va_list __ap))
{
  return __obstack_vprintf_chk (__obstack, __USE_FORTIFY_LEVEL - 1, __fmt,
				__ap);
}

# endif

#endif

#if __GLIBC_USE (DEPRECATED_GETS)
extern char *__gets_chk (char *__str, size_t) __wur;
extern char *__REDIRECT (__gets_warn, (char *__str), gets)
     __wur __warnattr ("please use fgets or getline instead, gets can't "
		       "specify buffer size");

__fortify_function __wur char *
gets (char *__str)
{
  if (__glibc_objsize (__str) != (size_t) -1)
    return __gets_chk (__str, __glibc_objsize (__str));
  return __gets_warn (__str);
}
#endif

extern char *__fgets_chk (char *__restrict __s, size_t __size, int __n,
			  FILE *__restrict __stream) __wur;
extern char *__REDIRECT (__fgets_alias,
			 (char *__restrict __s, int __n,
			  FILE *__restrict __stream), fgets) __wur;
extern char *__REDIRECT (__fgets_chk_warn,
			 (char *__restrict __s, size_t __size, int __n,
			  FILE *__restrict __stream), __fgets_chk)
     __wur __warnattr ("fgets called with bigger size than length "
		       "of destination buffer");

__fortify_function __wur char *
fgets (char *__restrict __s, int __n, FILE *__restrict __stream)
{
  size_t sz = __glibc_objsize (__s);
  if (__glibc_safe_or_unknown_len (__n, sizeof (char), sz))
    return __fgets_alias (__s, __n, __stream);
  if (__glibc_unsafe_len (__n, sizeof (char), sz))
    return __fgets_chk_warn (__s, sz, __n, __stream);
  return __fgets_chk (__s, sz, __n, __stream);
}

extern size_t __fread_chk (void *__restrict __ptr, size_t __ptrlen,
			   size_t __size, size_t __n,
			   FILE *__restrict __stream) __wur;
extern size_t __REDIRECT (__fread_alias,
			  (void *__restrict __ptr, size_t __size,
			   size_t __n, FILE *__restrict __stream),
			  fread) __wur;
extern size_t __REDIRECT (__fread_chk_warn,
			  (void *__restrict __ptr, size_t __ptrlen,
			   size_t __size, size_t __n,
			   FILE *__restrict __stream),
			  __fread_chk)
     __wur __warnattr ("fread called with bigger size * nmemb than length "
		       "of destination buffer");

__fortify_function __wur size_t
fread (void *__restrict __ptr, size_t __size, size_t __n,
       FILE *__restrict __stream)
{
  size_t sz = __glibc_objsize0 (__ptr);
  if (__glibc_safe_or_unknown_len (__n, __size, sz))
    return __fread_alias (__ptr, __size, __n, __stream);
  if (__glibc_unsafe_len (__n, __size, sz))
    return __fread_chk_warn (__ptr, sz, __size, __n, __stream);
  return __fread_chk (__ptr, sz, __size, __n, __stream);
}

#ifdef __USE_GNU
extern char *__fgets_unlocked_chk (char *__restrict __s, size_t __size,
				   int __n, FILE *__restrict __stream) __wur;
extern char *__REDIRECT (__fgets_unlocked_alias,
			 (char *__restrict __s, int __n,
			  FILE *__restrict __stream), fgets_unlocked) __wur;
extern char *__REDIRECT (__fgets_unlocked_chk_warn,
			 (char *__restrict __s, size_t __size, int __n,
			  FILE *__restrict __stream), __fgets_unlocked_chk)
     __wur __warnattr ("fgets_unlocked called with bigger size than length "
		       "of destination buffer");

__fortify_function __wur char *
fgets_unlocked (char *__restrict __s, int __n, FILE *__restrict __stream)
{
  size_t sz = __glibc_objsize (__s);
  if (__glibc_safe_or_unknown_len (__n, sizeof (char), sz))
    return __fgets_unlocked_alias (__s, __n, __stream);
  if (__glibc_unsafe_len (__n, sizeof (char), sz))
    return __fgets_unlocked_chk_warn (__s, sz, __n, __stream);
  return __fgets_unlocked_chk (__s, sz, __n, __stream);
}
#endif

#ifdef __USE_MISC
# undef fread_unlocked
extern size_t __fread_unlocked_chk (void *__restrict __ptr, size_t __ptrlen,
				    size_t __size, size_t __n,
				    FILE *__restrict __stream) __wur;
extern size_t __REDIRECT (__fread_unlocked_alias,
			  (void *__restrict __ptr, size_t __size,
			   size_t __n, FILE *__restrict __stream),
			  fread_unlocked) __wur;
extern size_t __REDIRECT (__fread_unlocked_chk_warn,
			  (void *__restrict __ptr, size_t __ptrlen,
			   size_t __size, size_t __n,
			   FILE *__restrict __stream),
			  __fread_unlocked_chk)
     __wur __warnattr ("fread_unlocked called with bigger size * nmemb than "
		       "length of destination buffer");

__fortify_function __wur size_t
fread_unlocked (void *__restrict __ptr, size_t __size, size_t __n,
		FILE *__restrict __stream)
{
  size_t sz = __glibc_objsize0 (__ptr);
  if (__glibc_safe_or_unknown_len (__n, __size, sz))
    {
# ifdef __USE_EXTERN_INLINES
      if (__builtin_constant_p (__size)
	  && __builtin_constant_p (__n)
	  && (__size | __n) < (((size_t) 1) << (8 * sizeof (size_t) / 2))
	  && __size * __n <= 8)
	{
	  size_t __cnt = __size * __n;
	  char *__cptr = (char *) __ptr;
	  if (__cnt == 0)
	    return 0;

for (; __cnt > 0; --__cnt)
	    {
	      int __c = getc_unlocked (__stream);
	      if (__c == EOF)
		break;
	      *__cptr++ = __c;
	    }
	  return (__cptr - (char *) __ptr) / __size;
	}
# endif
      return __fread_unlocked_alias (__ptr, __size, __n, __stream);
    }
  if (__glibc_unsafe_len (__n, __size, sz))
    return __fread_unlocked_chk_warn (__ptr, sz, __size, __n, __stream);
  return __fread_unlocked_chk (__ptr, sz, __size, __n, __stream);

}
#endif

#endif /* bits/stdio2.h.  */

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