[thirdparty/glibc.git] / libio / bits / stdio2.h

/* Checking macros for stdio functions.
   Copyright (C) 2004-2025 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
   <https://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

#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 __fortify_use_clang
/* clang does not have __va_arg_pack, so defer to va_arg version.  */
__fortify_function_error_function __attribute_overloadable__ int
__NTH (sprintf (__fortify_clang_overload_arg (char *, __restrict, __s),
		const char *__restrict __fmt, ...))
{
  __gnuc_va_list __fortify_ap;
  __builtin_va_start (__fortify_ap, __fmt);
  int __r = __builtin___vsprintf_chk (__s, __USE_FORTIFY_LEVEL - 1,
				      __glibc_objsize (__s), __fmt,
				      __fortify_ap);
  __builtin_va_end (__fortify_ap);
  return __r;
}
#elif !defined __cplusplus
# define sprintf(str, ...) \
  __builtin___sprintf_chk (str, __USE_FORTIFY_LEVEL - 1,		      \
			   __glibc_objsize (str), __VA_ARGS__)
#endif

__fortify_function __attribute_overloadable__ int
__NTH (vsprintf (__fortify_clang_overload_arg (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
# 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 __fortify_use_clang
/* clang does not have __va_arg_pack, so defer to va_arg version.  */
__fortify_function_error_function __attribute_overloadable__ int
__NTH (snprintf (__fortify_clang_overload_arg (char *, __restrict, __s),
		 size_t __n, const char *__restrict __fmt, ...))
{
  __gnuc_va_list __fortify_ap;
  __builtin_va_start (__fortify_ap, __fmt);
  int __r = __builtin___vsnprintf_chk (__s, __n, __USE_FORTIFY_LEVEL - 1,
				       __glibc_objsize (__s), __fmt,
				       __fortify_ap);
  __builtin_va_end (__fortify_ap);
  return __r;
}
# elif !defined __cplusplus
#  define snprintf(str, len, ...) \
  __builtin___snprintf_chk (str, len, __USE_FORTIFY_LEVEL - 1,		      \
			    __glibc_objsize (str), __VA_ARGS__)
# endif

__fortify_function __attribute_overloadable__ int
__NTH (vsnprintf (__fortify_clang_overload_arg (char *, __restrict, __s),
		  size_t __n, const char *__restrict __fmt,
		  __gnuc_va_list __ap))
     __fortify_clang_warning (__fortify_clang_bos_static_lt (__n, __s),
			      "call to vsnprintf may overflow the destination "
			      "buffer")
{
  return __builtin___vsnprintf_chk (__s, __n, __USE_FORTIFY_LEVEL - 1,
				    __glibc_objsize (__s), __fmt, __ap);
}

#endif

#if __USE_FORTIFY_LEVEL > 1
# ifdef __va_arg_pack
__fortify_function __nonnull ((1)) 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 __fortify_use_clang
/* clang does not have __va_arg_pack, so defer to va_arg version.  */
__fortify_function_error_function __attribute_overloadable__ __nonnull ((1)) int
fprintf (__fortify_clang_overload_arg (FILE *, __restrict, __stream),
	 const char *__restrict __fmt, ...)
{
  __gnuc_va_list __fortify_ap;
  __builtin_va_start (__fortify_ap, __fmt);
  int __r = __builtin___vfprintf_chk (__stream, __USE_FORTIFY_LEVEL - 1,
				      __fmt, __fortify_ap);
  __builtin_va_end (__fortify_ap);
  return __r;
}

__fortify_function_error_function __attribute_overloadable__ int
printf (__fortify_clang_overload_arg (const char *, __restrict, __fmt), ...)
{
  __gnuc_va_list __fortify_ap;
  __builtin_va_start (__fortify_ap, __fmt);
  int __r = __builtin___vprintf_chk (__USE_FORTIFY_LEVEL - 1, __fmt,
				     __fortify_ap);
  __builtin_va_end (__fortify_ap);
  return __r;
}
# 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 __attribute_overloadable__ int
vprintf (__fortify_clang_overload_arg (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 __nonnull ((1)) 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
#  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 __fortify_use_clang
__fortify_function_error_function __attribute_overloadable__ int
dprintf (int __fd, __fortify_clang_overload_arg (const char *, __restrict,
						 __fmt), ...)
{
  __gnuc_va_list __fortify_ap;
  __builtin_va_start (__fortify_ap, __fmt);
  int __r = __vdprintf_chk (__fd, __USE_FORTIFY_LEVEL - 1, __fmt,
			    __fortify_ap);
  __builtin_va_end (__fortify_ap);
  return __r;
}
#  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
#  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 __fortify_use_clang
__fortify_function_error_function __attribute_overloadable__ int
__NTH (asprintf (__fortify_clang_overload_arg (char **, __restrict, __ptr),
		 const char *__restrict __fmt, ...))
{
  __gnuc_va_list __fortify_ap;
  __builtin_va_start (__fortify_ap, __fmt);
  int __r = __vasprintf_chk (__ptr, __USE_FORTIFY_LEVEL - 1, __fmt,
			     __fortify_ap);
  __builtin_va_end (__fortify_ap);
  return __r;
}

__fortify_function_error_function __attribute_overloadable__ int
__NTH (__asprintf (__fortify_clang_overload_arg (char **, __restrict, __ptr),
		   const char *__restrict __fmt, ...))
{
  __gnuc_va_list __fortify_ap;
  __builtin_va_start (__fortify_ap, __fmt);
  int __r = __vasprintf_chk (__ptr, __USE_FORTIFY_LEVEL - 1, __fmt,
			     __fortify_ap);
  __builtin_va_end (__fortify_ap);
  return __r;
}

__fortify_function_error_function __attribute_overloadable__ int
__NTH (obstack_printf (__fortify_clang_overload_arg (struct obstack *,
						     __restrict, __obstack),
		       const char *__restrict __fmt, ...))
{
  __gnuc_va_list __fortify_ap;
  __builtin_va_start (__fortify_ap, __fmt);
  int __r = __obstack_vprintf_chk (__obstack, __USE_FORTIFY_LEVEL - 1,
				   __fmt, __fortify_ap);
  __builtin_va_end (__fortify_ap);
  return __r;
}
#  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)
__fortify_function __wur __attribute_overloadable__ char *
gets (__fortify_clang_overload_arg (char *, , __str))
     __fortify_clang_warning (__glibc_objsize (__str) == (size_t) -1,
			      "please use fgets or getline instead, gets "
			      "can not specify buffer size")
{
  if (__glibc_objsize (__str) != (size_t) -1)
    return __gets_chk (__str, __glibc_objsize (__str));
  return __gets_warn (__str);
}
#endif

__fortify_function __wur __fortified_attr_access (__write_only__, 1, 2)
__nonnull ((3)) __attribute_overloadable__ char *
fgets (__fortify_clang_overload_arg (char *, __restrict, __s), int __n,
       FILE *__restrict __stream)
     __fortify_clang_warning (__fortify_clang_bos_static_lt (__n, __s) && __n > 0,
			      "fgets called with bigger size than length of "
			      "destination buffer")
{
  size_t __sz = __glibc_objsize (__s);
  if (__glibc_safe_or_unknown_len (__n, sizeof (char), __sz))
    return __fgets_alias (__s, __n, __stream);
#if !__fortify_use_clang
  if (__glibc_unsafe_len (__n, sizeof (char), __sz))
    return __fgets_chk_warn (__s, __sz, __n, __stream);
#endif
  return __fgets_chk (__s, __sz, __n, __stream);
}

__fortify_function __wur __nonnull ((4)) __attribute_overloadable__ size_t
fread (__fortify_clang_overload_arg (void *, __restrict, __ptr),
       size_t __size, size_t __n, FILE *__restrict __stream)
     __fortify_clang_warning (__fortify_clang_bos0_static_lt (__size * __n, __ptr)
			      && !__fortify_clang_mul_may_overflow (__size, __n),
			      "fread called with bigger size * n than length "
			      "of destination buffer")
{
  size_t __sz = __glibc_objsize0 (__ptr);
  if (__glibc_safe_or_unknown_len (__n, __size, __sz))
    return __fread_alias (__ptr, __size, __n, __stream);
#if !__fortify_use_clang
  if (__glibc_unsafe_len (__n, __size, __sz))
    return __fread_chk_warn (__ptr, __sz, __size, __n, __stream);
#endif
  return __fread_chk (__ptr, __sz, __size, __n, __stream);
}

#ifdef __USE_GNU
__fortify_function __wur __fortified_attr_access (__write_only__, 1, 2)
__nonnull ((3)) __attribute_overloadable__ char *
fgets_unlocked (__fortify_clang_overload_arg (char *, __restrict, __s),
		int __n, FILE *__restrict __stream)
     __fortify_clang_warning (__fortify_clang_bos_static_lt (__n, __s) && __n > 0,
			      "fgets called with bigger size than length of "
			      "destination buffer")
{
  size_t __sz = __glibc_objsize (__s);
  if (__glibc_safe_or_unknown_len (__n, sizeof (char), __sz))
    return __fgets_unlocked_alias (__s, __n, __stream);
#if !__fortify_use_clang
  if (__glibc_unsafe_len (__n, sizeof (char), __sz))
    return __fgets_unlocked_chk_warn (__s, __sz, __n, __stream);
#endif
  return __fgets_unlocked_chk (__s, __sz, __n, __stream);
}
#endif

#ifdef __USE_MISC
# undef fread_unlocked
__fortify_function __wur __nonnull ((4)) __attribute_overloadable__ size_t
fread_unlocked (__fortify_clang_overload_arg0 (void *, __restrict, __ptr),
		size_t __size, size_t __n, FILE *__restrict __stream)
     __fortify_clang_warning (__fortify_clang_bos0_static_lt (__size * __n, __ptr)
			      && !__fortify_clang_mul_may_overflow (__size, __n),
			      "fread_unlocked called with bigger size * n than "
			      "length of destination buffer")
{
  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 !__fortify_use_clang
  if (__glibc_unsafe_len (__n, __size, __sz))
    return __fread_unlocked_chk_warn (__ptr, __sz, __size, __n, __stream);
# endif
  return __fread_unlocked_chk (__ptr, __sz, __size, __n, __stream);

}
#endif

#endif /* bits/stdio2.h.  */
Commit	Line	Data
b5cc329c	1	/* Checking macros for stdio functions.
26420023	2	Copyright (C) 2004-2025 Free Software Foundation, Inc.
b5cc329c UD	3	This file is part of the GNU C Library.
	4
	5	The GNU C Library is free software; you can redistribute it and/or
	6	modify it under the terms of the GNU Lesser General Public
	7	License as published by the Free Software Foundation; either
	8	version 2.1 of the License, or (at your option) any later version.
	9
	10	The GNU C Library is distributed in the hope that it will be useful,
	11	but WITHOUT ANY WARRANTY; without even the implied warranty of
	12	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	13	Lesser General Public License for more details.
	14
	15	You should have received a copy of the GNU Lesser General Public
59ba27a6	16	License along with the GNU C Library; if not, see
5a82c748	17	<https://www.gnu.org/licenses/>. */
b5cc329c	18
a4fea3f2 ZW	19	#ifndef _BITS_STDIO2_H
	20	#define _BITS_STDIO2_H 1
	21
b5cc329c UD	22	#ifndef _STDIO_H
	23	# error "Never include <bits/stdio2.h> directly; use <stdio.h> instead."
	24	#endif
	25
de1c3ebb	26	#ifdef __va_arg_pack
5ac3ea17	27	__fortify_function int
a784e502	28	__NTH (sprintf (char __restrict __s, const char __restrict __fmt, ...))
de1c3ebb UD	29	{
de1c3ebb UD	30	return __builtin___sprintf_chk (__s, __USE_FORTIFY_LEVEL - 1,
f9de8bfe SP	31	__glibc_objsize (__s), __fmt,
f9de8bfe SP	32	__va_arg_pack ());
de1c3ebb	33	}
29951991 AZ	34	#elif __fortify_use_clang
	35	/* clang does not have __va_arg_pack, so defer to va_arg version. */
	36	__fortify_function_error_function __attribute_overloadable__ int
	37	__NTH (sprintf (__fortify_clang_overload_arg (char *, __restrict, __s),
	38	const char *__restrict __fmt, ...))
	39	{
	40	__gnuc_va_list __fortify_ap;
	41	__builtin_va_start (__fortify_ap, __fmt);
	42	int __r = __builtin___vsprintf_chk (__s, __USE_FORTIFY_LEVEL - 1,
	43	__glibc_objsize (__s), __fmt,
	44	__fortify_ap);
	45	__builtin_va_end (__fortify_ap);
	46	return __r;
	47	}
de1c3ebb UD	48	#elif !defined __cplusplus
de1c3ebb UD	49	# define sprintf(str, ...) \
f9de8bfe SP	50	__builtin___sprintf_chk (str, __USE_FORTIFY_LEVEL - 1, \
f9de8bfe SP	51	__glibc_objsize (str), __VA_ARGS__)
de1c3ebb UD	52	#endif
de1c3ebb UD	53
29951991 AZ	54	__fortify_function __attribute_overloadable__ int
	55	__NTH (vsprintf (__fortify_clang_overload_arg (char *, __restrict, __s),
	56	const char *__restrict __fmt, __gnuc_va_list __ap))
de1c3ebb UD	57	{
de1c3ebb UD	58	return __builtin___vsprintf_chk (__s, __USE_FORTIFY_LEVEL - 1,
f9de8bfe	59	__glibc_objsize (__s), __fmt, __ap);
de1c3ebb	60	}
b5cc329c	61
acd7f096	62	#if defined __USE_ISOC99 \|\| defined __USE_UNIX98
de1c3ebb	63	# ifdef __va_arg_pack
5ac3ea17	64	__fortify_function int
de1c3ebb	65	__NTH (snprintf (char *__restrict __s, size_t __n,
a784e502	66	const char *__restrict __fmt, ...))
de1c3ebb UD	67	{
de1c3ebb UD	68	return __builtin___snprintf_chk (__s, __n, __USE_FORTIFY_LEVEL - 1,
f9de8bfe SP	69	__glibc_objsize (__s), __fmt,
f9de8bfe SP	70	__va_arg_pack ());
de1c3ebb	71	}
29951991 AZ	72	# elif __fortify_use_clang
	73	/* clang does not have __va_arg_pack, so defer to va_arg version. */
	74	__fortify_function_error_function __attribute_overloadable__ int
	75	__NTH (snprintf (__fortify_clang_overload_arg (char *, __restrict, __s),
	76	size_t __n, const char *__restrict __fmt, ...))
	77	{
	78	__gnuc_va_list __fortify_ap;
	79	__builtin_va_start (__fortify_ap, __fmt);
	80	int __r = __builtin___vsnprintf_chk (__s, __n, __USE_FORTIFY_LEVEL - 1,
	81	__glibc_objsize (__s), __fmt,
	82	__fortify_ap);
	83	__builtin_va_end (__fortify_ap);
	84	return __r;
	85	}
de1c3ebb UD	86	# elif !defined __cplusplus
de1c3ebb UD	87	# define snprintf(str, len, ...) \
f9de8bfe SP	88	__builtin___snprintf_chk (str, len, __USE_FORTIFY_LEVEL - 1, \
f9de8bfe SP	89	__glibc_objsize (str), __VA_ARGS__)
de1c3ebb UD	90	# endif
de1c3ebb UD	91
29951991 AZ	92	__fortify_function __attribute_overloadable__ int
	93	__NTH (vsnprintf (__fortify_clang_overload_arg (char *, __restrict, __s),
	94	size_t __n, const char *__restrict __fmt,
	95	__gnuc_va_list __ap))
	96	__fortify_clang_warning (__fortify_clang_bos_static_lt (__n, __s),
	97	"call to vsnprintf may overflow the destination "
	98	"buffer")
de1c3ebb UD	99	{
de1c3ebb UD	100	return __builtin___vsnprintf_chk (__s, __n, __USE_FORTIFY_LEVEL - 1,
f9de8bfe	101	__glibc_objsize (__s), __fmt, __ap);
de1c3ebb	102	}
b5cc329c	103
553cc5f9	104	#endif
b5cc329c UD	105
b5cc329c UD	106	#if __USE_FORTIFY_LEVEL > 1
de1c3ebb	107	# ifdef __va_arg_pack
64b1a441	108	__fortify_function __nonnull ((1)) int
a784e502	109	fprintf (FILE __restrict __stream, const char __restrict __fmt, ...)
de1c3ebb UD	110	{
	111	return __fprintf_chk (__stream, __USE_FORTIFY_LEVEL - 1, __fmt,
	112	__va_arg_pack ());
	113	}
	114
5ac3ea17	115	__fortify_function int
a784e502	116	printf (const char *__restrict __fmt, ...)
de1c3ebb UD	117	{
	118	return __printf_chk (__USE_FORTIFY_LEVEL - 1, __fmt, __va_arg_pack ());
	119	}
29951991 AZ	120	# elif __fortify_use_clang
	121	/* clang does not have __va_arg_pack, so defer to va_arg version. */
	122	__fortify_function_error_function __attribute_overloadable__ __nonnull ((1)) int
	123	fprintf (__fortify_clang_overload_arg (FILE *, __restrict, __stream),
	124	const char *__restrict __fmt, ...)
	125	{
	126	__gnuc_va_list __fortify_ap;
	127	__builtin_va_start (__fortify_ap, __fmt);
	128	int __r = __builtin___vfprintf_chk (__stream, __USE_FORTIFY_LEVEL - 1,
	129	__fmt, __fortify_ap);
	130	__builtin_va_end (__fortify_ap);
	131	return __r;
	132	}
	133
	134	__fortify_function_error_function __attribute_overloadable__ int
	135	printf (__fortify_clang_overload_arg (const char *, __restrict, __fmt), ...)
	136	{
	137	__gnuc_va_list __fortify_ap;
	138	__builtin_va_start (__fortify_ap, __fmt);
	139	int __r = __builtin___vprintf_chk (__USE_FORTIFY_LEVEL - 1, __fmt,
	140	__fortify_ap);
	141	__builtin_va_end (__fortify_ap);
	142	return __r;
	143	}
de1c3ebb UD	144	# elif !defined __cplusplus
de1c3ebb UD	145	# define printf(...) \
b5cc329c	146	__printf_chk (__USE_FORTIFY_LEVEL - 1, __VA_ARGS__)
de1c3ebb	147	# define fprintf(stream, ...) \
b5cc329c	148	__fprintf_chk (stream, __USE_FORTIFY_LEVEL - 1, __VA_ARGS__)
de1c3ebb UD	149	# endif
de1c3ebb UD	150
29951991 AZ	151	__fortify_function __attribute_overloadable__ int
	152	vprintf (__fortify_clang_overload_arg (const char *, __restrict, __fmt),
	153	__gnuc_va_list __ap)
de1c3ebb UD	154	{
	155	#ifdef __USE_EXTERN_INLINES
	156	return __vfprintf_chk (stdout, __USE_FORTIFY_LEVEL - 1, __fmt, __ap);
	157	#else
	158	return __vprintf_chk (__USE_FORTIFY_LEVEL - 1, __fmt, __ap);
	159	#endif
	160	}
	161
64b1a441	162	__fortify_function __nonnull ((1)) int
de1c3ebb	163	vfprintf (FILE *__restrict __stream,
a4fea3f2	164	const char *__restrict __fmt, __gnuc_va_list __ap)
de1c3ebb UD	165	{
	166	return __vfprintf_chk (__stream, __USE_FORTIFY_LEVEL - 1, __fmt, __ap);
	167	}
b5cc329c	168
54b71e02	169	# ifdef __USE_XOPEN2K8
54b71e02 JM	170	# ifdef __va_arg_pack
	171	__fortify_function int
	172	dprintf (int __fd, const char *__restrict __fmt, ...)
	173	{
	174	return __dprintf_chk (__fd, __USE_FORTIFY_LEVEL - 1, __fmt,
	175	__va_arg_pack ());
	176	}
29951991 AZ	177	# elif __fortify_use_clang
	178	__fortify_function_error_function __attribute_overloadable__ int
	179	dprintf (int __fd, __fortify_clang_overload_arg (const char *, __restrict,
	180	__fmt), ...)
	181	{
	182	__gnuc_va_list __fortify_ap;
	183	__builtin_va_start (__fortify_ap, __fmt);
	184	int __r = __vdprintf_chk (__fd, __USE_FORTIFY_LEVEL - 1, __fmt,
	185	__fortify_ap);
	186	__builtin_va_end (__fortify_ap);
	187	return __r;
	188	}
54b71e02 JM	189	# elif !defined __cplusplus
	190	# define dprintf(fd, ...) \
	191	__dprintf_chk (fd, __USE_FORTIFY_LEVEL - 1, __VA_ARGS__)
	192	# endif
	193
	194	__fortify_function int
a4fea3f2	195	vdprintf (int __fd, const char *__restrict __fmt, __gnuc_va_list __ap)
54b71e02 JM	196	{
	197	return __vdprintf_chk (__fd, __USE_FORTIFY_LEVEL - 1, __fmt, __ap);
	198	}
	199	# endif
	200
dff37515	201	# ifdef __USE_GNU
dff37515	202	# ifdef __va_arg_pack
5ac3ea17	203	__fortify_function int
a784e502	204	__NTH (asprintf (char *__restrict __ptr, const char __restrict __fmt, ...))
dff37515 UD	205	{
	206	return __asprintf_chk (__ptr, __USE_FORTIFY_LEVEL - 1, __fmt,
	207	__va_arg_pack ());
	208	}
	209
5ac3ea17	210	__fortify_function int
a784e502	211	__NTH (__asprintf (char *__restrict __ptr, const char __restrict __fmt,
dff37515 UD	212	...))
	213	{
	214	return __asprintf_chk (__ptr, __USE_FORTIFY_LEVEL - 1, __fmt,
	215	__va_arg_pack ());
	216	}
	217
5ac3ea17	218	__fortify_function int
dff37515	219	__NTH (obstack_printf (struct obstack *__restrict __obstack,
a784e502	220	const char *__restrict __fmt, ...))
dff37515 UD	221	{
	222	return __obstack_printf_chk (__obstack, __USE_FORTIFY_LEVEL - 1, __fmt,
	223	__va_arg_pack ());
	224	}
29951991 AZ	225	# elif __fortify_use_clang
	226	__fortify_function_error_function __attribute_overloadable__ int
	227	__NTH (asprintf (__fortify_clang_overload_arg (char **, __restrict, __ptr),
	228	const char *__restrict __fmt, ...))
	229	{
	230	__gnuc_va_list __fortify_ap;
	231	__builtin_va_start (__fortify_ap, __fmt);
	232	int __r = __vasprintf_chk (__ptr, __USE_FORTIFY_LEVEL - 1, __fmt,
	233	__fortify_ap);
	234	__builtin_va_end (__fortify_ap);
	235	return __r;
	236	}
	237
	238	__fortify_function_error_function __attribute_overloadable__ int
	239	__NTH (__asprintf (__fortify_clang_overload_arg (char **, __restrict, __ptr),
	240	const char *__restrict __fmt, ...))
	241	{
	242	__gnuc_va_list __fortify_ap;
	243	__builtin_va_start (__fortify_ap, __fmt);
	244	int __r = __vasprintf_chk (__ptr, __USE_FORTIFY_LEVEL - 1, __fmt,
	245	__fortify_ap);
	246	__builtin_va_end (__fortify_ap);
	247	return __r;
	248	}
	249
	250	__fortify_function_error_function __attribute_overloadable__ int
	251	__NTH (obstack_printf (__fortify_clang_overload_arg (struct obstack *,
	252	__restrict, __obstack),
	253	const char *__restrict __fmt, ...))
	254	{
	255	__gnuc_va_list __fortify_ap;
	256	__builtin_va_start (__fortify_ap, __fmt);
	257	int __r = __obstack_vprintf_chk (__obstack, __USE_FORTIFY_LEVEL - 1,
	258	__fmt, __fortify_ap);
	259	__builtin_va_end (__fortify_ap);
	260	return __r;
	261	}
dff37515 UD	262	# elif !defined __cplusplus
	263	# define asprintf(ptr, ...) \
	264	__asprintf_chk (ptr, __USE_FORTIFY_LEVEL - 1, __VA_ARGS__)
	265	# define __asprintf(ptr, ...) \
	266	__asprintf_chk (ptr, __USE_FORTIFY_LEVEL - 1, __VA_ARGS__)
dff37515 UD	267	# define obstack_printf(obstack, ...) \
	268	__obstack_printf_chk (obstack, __USE_FORTIFY_LEVEL - 1, __VA_ARGS__)
	269	# endif
	270
5ac3ea17	271	__fortify_function int
a784e502	272	__NTH (vasprintf (char *__restrict __ptr, const char __restrict __fmt,
a4fea3f2	273	__gnuc_va_list __ap))
dff37515 UD	274	{
	275	return __vasprintf_chk (__ptr, __USE_FORTIFY_LEVEL - 1, __fmt, __ap);
	276	}
	277
5ac3ea17	278	__fortify_function int
dff37515	279	__NTH (obstack_vprintf (struct obstack *__restrict __obstack,
a4fea3f2	280	const char *__restrict __fmt, __gnuc_va_list __ap))
dff37515 UD	281	{
	282	return __obstack_vprintf_chk (__obstack, __USE_FORTIFY_LEVEL - 1, __fmt,
	283	__ap);
	284	}
	285
	286	# endif
	287
b5cc329c UD	288	#endif
b5cc329c UD	289
7caa5054	290	#if __GLIBC_USE (DEPRECATED_GETS)
29951991 AZ	291	__fortify_function __wur __attribute_overloadable__ char *
	292	gets (__fortify_clang_overload_arg (char *, , __str))
	293	__fortify_clang_warning (__glibc_objsize (__str) == (size_t) -1,
	294	"please use fgets or getline instead, gets "
	295	"can not specify buffer size")
88764ae2	296	{
f9de8bfe SP	297	if (__glibc_objsize (__str) != (size_t) -1)
f9de8bfe SP	298	return __gets_chk (__str, __glibc_objsize (__str));
d6cd6bf4	299	return __gets_warn (__str);
88764ae2	300	}
e0a309cf	301	#endif
88764ae2	302
64b1a441	303	__fortify_function __wur __fortified_attr_access (__write_only__, 1, 2)
29951991 AZ	304	__nonnull ((3)) __attribute_overloadable__ char *
	305	fgets (__fortify_clang_overload_arg (char *, __restrict, __s), int __n,
	306	FILE *__restrict __stream)
	307	__fortify_clang_warning (__fortify_clang_bos_static_lt (__n, __s) && __n > 0,
	308	"fgets called with bigger size than length of "
	309	"destination buffer")
88764ae2	310	{
39ca997a AS	311	size_t __sz = __glibc_objsize (__s);
39ca997a AS	312	if (__glibc_safe_or_unknown_len (__n, sizeof (char), __sz))
a643f60c	313	return __fgets_alias (__s, __n, __stream);
29951991	314	#if !__fortify_use_clang
39ca997a AS	315	if (__glibc_unsafe_len (__n, sizeof (char), __sz))
39ca997a AS	316	return __fgets_chk_warn (__s, __sz, __n, __stream);
29951991	317	#endif
39ca997a	318	return __fgets_chk (__s, __sz, __n, __stream);
88764ae2 UD	319	}
88764ae2 UD	320
29951991 AZ	321	__fortify_function __wur __nonnull ((4)) __attribute_overloadable__ size_t
	322	fread (__fortify_clang_overload_arg (void *, __restrict, __ptr),
	323	size_t __size, size_t __n, FILE *__restrict __stream)
	324	__fortify_clang_warning (__fortify_clang_bos0_static_lt (__size * __n, __ptr)
	325	&& !__fortify_clang_mul_may_overflow (__size, __n),
	326	"fread called with bigger size * n than length "
	327	"of destination buffer")
3586b2b6	328	{
39ca997a AS	329	size_t __sz = __glibc_objsize0 (__ptr);
39ca997a AS	330	if (__glibc_safe_or_unknown_len (__n, __size, __sz))
a643f60c	331	return __fread_alias (__ptr, __size, __n, __stream);
29951991	332	#if !__fortify_use_clang
39ca997a AS	333	if (__glibc_unsafe_len (__n, __size, __sz))
39ca997a AS	334	return __fread_chk_warn (__ptr, __sz, __size, __n, __stream);
29951991	335	#endif
39ca997a	336	return __fread_chk (__ptr, __sz, __size, __n, __stream);
3586b2b6 UD	337	}
3586b2b6 UD	338
88764ae2	339	#ifdef __USE_GNU
64b1a441	340	__fortify_function __wur __fortified_attr_access (__write_only__, 1, 2)
29951991 AZ	341	__nonnull ((3)) __attribute_overloadable__ char *
	342	fgets_unlocked (__fortify_clang_overload_arg (char *, __restrict, __s),
	343	int __n, FILE *__restrict __stream)
	344	__fortify_clang_warning (__fortify_clang_bos_static_lt (__n, __s) && __n > 0,
	345	"fgets called with bigger size than length of "
	346	"destination buffer")
88764ae2	347	{
39ca997a AS	348	size_t __sz = __glibc_objsize (__s);
39ca997a AS	349	if (__glibc_safe_or_unknown_len (__n, sizeof (char), __sz))
a643f60c	350	return __fgets_unlocked_alias (__s, __n, __stream);
29951991	351	#if !__fortify_use_clang
39ca997a AS	352	if (__glibc_unsafe_len (__n, sizeof (char), __sz))
39ca997a AS	353	return __fgets_unlocked_chk_warn (__s, __sz, __n, __stream);
29951991	354	#endif
39ca997a	355	return __fgets_unlocked_chk (__s, __sz, __n, __stream);
88764ae2 UD	356	}
88764ae2 UD	357	#endif
3586b2b6 UD	358
	359	#ifdef __USE_MISC
	360	# undef fread_unlocked
29951991 AZ	361	__fortify_function __wur __nonnull ((4)) __attribute_overloadable__ size_t
	362	fread_unlocked (__fortify_clang_overload_arg0 (void *, __restrict, __ptr),
	363	size_t __size, size_t __n, FILE *__restrict __stream)
	364	__fortify_clang_warning (__fortify_clang_bos0_static_lt (__size * __n, __ptr)
	365	&& !__fortify_clang_mul_may_overflow (__size, __n),
	366	"fread_unlocked called with bigger size * n than "
	367	"length of destination buffer")
3586b2b6	368	{
39ca997a AS	369	size_t __sz = __glibc_objsize0 (__ptr);
39ca997a AS	370	if (__glibc_safe_or_unknown_len (__n, __size, __sz))
d6cd6bf4	371	{
3586b2b6	372	# ifdef __USE_EXTERN_INLINES
a643f60c SP	373	if (__builtin_constant_p (__size)
	374	&& __builtin_constant_p (__n)
	375	&& (__size \| __n) < (((size_t) 1) << (8 * sizeof (size_t) / 2))
	376	&& __size * __n <= 8)
3586b2b6	377	{
a643f60c SP	378	size_t __cnt = __size * __n;
	379	char __cptr = (char ) __ptr;
	380	if (__cnt == 0)
	381	return 0;
	382
	383	for (; __cnt > 0; --__cnt)
	384	{
	385	int __c = getc_unlocked (__stream);
	386	if (__c == EOF)
	387	break;
	388	*__cptr++ = __c;
	389	}
	390	return (__cptr - (char *) __ptr) / __size;
3586b2b6	391	}
3586b2b6	392	# endif
a643f60c SP	393	return __fread_unlocked_alias (__ptr, __size, __n, __stream);
a643f60c SP	394	}
29951991	395	# if !__fortify_use_clang
39ca997a AS	396	if (__glibc_unsafe_len (__n, __size, __sz))
39ca997a AS	397	return __fread_unlocked_chk_warn (__ptr, __sz, __size, __n, __stream);
29951991	398	# endif
39ca997a	399	return __fread_unlocked_chk (__ptr, __sz, __size, __n, __stream);
a643f60c	400
3586b2b6 UD	401	}
3586b2b6 UD	402	#endif
a4fea3f2 ZW	403
a4fea3f2 ZW	404	#endif /* bits/stdio2.h. */