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/* Checking macros for wchar functions.
Copyright (C) 2005-2024 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 _WCHAR_H
# error "Never include <bits/wchar2.h> directly; use <wchar.h> instead."
#endif
__fortify_function __attribute_overloadable__ wchar_t *
__NTH (wmemcpy (__fortify_clang_overload_arg (wchar_t *, __restrict, __s1),
const wchar_t *__restrict __s2, size_t __n))
__fortify_clang_warning_only_if_bos0_lt2 (__n, __s1, sizeof (wchar_t),
"wmemcpy called with length bigger "
"than size of destination buffer")
{
return __glibc_fortify_n (wmemcpy, __n, sizeof (wchar_t),
__glibc_objsize0 (__s1),
__s1, __s2, __n);
}
__fortify_function __attribute_overloadable__ wchar_t *
__NTH (wmemmove (__fortify_clang_overload_arg (wchar_t *, ,__s1),
const wchar_t *__s2, size_t __n))
__fortify_clang_warning_only_if_bos0_lt2 (__n, __s1, sizeof (wchar_t),
"wmemmove called with length bigger "
"than size of destination buffer")
{
return __glibc_fortify_n (wmemmove, __n, sizeof (wchar_t),
__glibc_objsize0 (__s1),
__s1, __s2, __n);
}
#ifdef __USE_GNU
__fortify_function __attribute_overloadable__ wchar_t *
__NTH (wmempcpy (__fortify_clang_overload_arg (wchar_t *, __restrict, __s1),
const wchar_t *__restrict __s2, size_t __n))
__fortify_clang_warning_only_if_bos0_lt2 (__n, __s1, sizeof (wchar_t),
"wmempcpy called with length bigger "
"than size of destination buffer")
{
return __glibc_fortify_n (wmempcpy, __n, sizeof (wchar_t),
__glibc_objsize0 (__s1),
__s1, __s2, __n);
}
#endif
__fortify_function __attribute_overloadable__ wchar_t *
__NTH (wmemset (__fortify_clang_overload_arg (wchar_t *, ,__s), wchar_t __c,
size_t __n))
__fortify_clang_warning_only_if_bos0_lt2 (__n, __s, sizeof (wchar_t),
"wmemset called with length bigger "
"than size of destination buffer")
{
return __glibc_fortify_n (wmemset, __n, sizeof (wchar_t),
__glibc_objsize0 (__s),
__s, __c, __n);
}
__fortify_function __attribute_overloadable__ wchar_t *
__NTH (wcscpy (__fortify_clang_overload_arg (wchar_t *, __restrict, __dest),
const wchar_t *__restrict __src))
{
size_t __sz = __glibc_objsize (__dest);
if (__sz != (size_t) -1)
return __wcscpy_chk (__dest, __src, __sz / sizeof (wchar_t));
return __wcscpy_alias (__dest, __src);
}
__fortify_function __attribute_overloadable__ wchar_t *
__NTH (wcpcpy (__fortify_clang_overload_arg (wchar_t *, __restrict, __dest),
const wchar_t *__restrict __src))
{
size_t __sz = __glibc_objsize (__dest);
if (__sz != (size_t) -1)
return __wcpcpy_chk (__dest, __src, __sz / sizeof (wchar_t));
return __wcpcpy_alias (__dest, __src);
}
__fortify_function __attribute_overloadable__ wchar_t *
__NTH (wcsncpy (__fortify_clang_overload_arg (wchar_t *, __restrict, __dest),
const wchar_t *__restrict __src, size_t __n))
__fortify_clang_warning_only_if_bos0_lt2 (__n, __dest, sizeof (wchar_t),
"wcsncpy called with length bigger "
"than size of destination buffer")
{
return __glibc_fortify_n (wcsncpy, __n, sizeof (wchar_t),
__glibc_objsize (__dest),
__dest, __src, __n);
}
__fortify_function __attribute_overloadable__ wchar_t *
__NTH (wcpncpy (__fortify_clang_overload_arg (wchar_t *, __restrict, __dest),
const wchar_t *__restrict __src, size_t __n))
__fortify_clang_warning_only_if_bos0_lt2 (__n, __dest, sizeof (wchar_t),
"wcpncpy called with length bigger "
"than size of destination buffer")
{
return __glibc_fortify_n (wcpncpy, __n, sizeof (wchar_t),
__glibc_objsize (__dest),
__dest, __src, __n);
}
__fortify_function __attribute_overloadable__ wchar_t *
__NTH (wcscat (__fortify_clang_overload_arg (wchar_t *, __restrict, __dest),
const wchar_t *__restrict __src))
{
size_t __sz = __glibc_objsize (__dest);
if (__sz != (size_t) -1)
return __wcscat_chk (__dest, __src, __sz / sizeof (wchar_t));
return __wcscat_alias (__dest, __src);
}
__fortify_function __attribute_overloadable__ wchar_t *
__NTH (wcsncat (__fortify_clang_overload_arg (wchar_t *, __restrict, __dest),
const wchar_t *__restrict __src, size_t __n))
{
size_t __sz = __glibc_objsize (__dest);
if (__sz != (size_t) -1)
return __wcsncat_chk (__dest, __src, __n, __sz / sizeof (wchar_t));
return __wcsncat_alias (__dest, __src, __n);
}
#ifdef __USE_MISC
__fortify_function __attribute_overloadable__ size_t
__NTH (wcslcpy (__fortify_clang_overload_arg (wchar_t *, __restrict, __dest),
const wchar_t *__restrict __src, size_t __n))
__fortify_clang_warning_only_if_bos0_lt2 (__n, __dest, sizeof (wchar_t),
"wcslcpy called with length bigger "
"than size of destination buffer")
{
if (__glibc_objsize (__dest) != (size_t) -1
&& (!__builtin_constant_p (__n
> __glibc_objsize (__dest) / sizeof (wchar_t))
|| __n > __glibc_objsize (__dest) / sizeof (wchar_t)))
return __wcslcpy_chk (__dest, __src, __n,
__glibc_objsize (__dest) / sizeof (wchar_t));
return __wcslcpy_alias (__dest, __src, __n);
}
__fortify_function __attribute_overloadable__ size_t
__NTH (wcslcat (__fortify_clang_overload_arg (wchar_t *, __restrict, __dest),
const wchar_t *__restrict __src, size_t __n))
{
if (__glibc_objsize (__dest) != (size_t) -1
&& (!__builtin_constant_p (__n > __glibc_objsize (__dest)
/ sizeof (wchar_t))
|| __n > __glibc_objsize (__dest) / sizeof (wchar_t)))
return __wcslcat_chk (__dest, __src, __n,
__glibc_objsize (__dest) / sizeof (wchar_t));
return __wcslcat_alias (__dest, __src, __n);
}
#endif /* __USE_MISC */
#ifdef __va_arg_pack
__fortify_function int
__NTH (swprintf (wchar_t *__restrict __s, size_t __n,
const wchar_t *__restrict __fmt, ...))
{
size_t __sz = __glibc_objsize (__s);
if (__sz != (size_t) -1 || __USE_FORTIFY_LEVEL > 1)
return __swprintf_chk (__s, __n, __USE_FORTIFY_LEVEL - 1,
__sz / sizeof (wchar_t), __fmt, __va_arg_pack ());
return __swprintf_alias (__s, __n, __fmt, __va_arg_pack ());
}
#elif __fortify_use_clang
__fortify_function_error_function __attribute_overloadable__ int
__NTH (swprintf (__fortify_clang_overload_arg (wchar_t *, __restrict, __s),
size_t __n, const wchar_t *__restrict __fmt, ...))
{
__gnuc_va_list __fortify_ap;
__builtin_va_start (__fortify_ap, __fmt);
int __r;
if (__glibc_objsize (__s) != (size_t) -1 || __USE_FORTIFY_LEVEL > 1)
__r = __vswprintf_chk (__s, __n, __USE_FORTIFY_LEVEL - 1,
__glibc_objsize (__s) / sizeof (wchar_t),
__fmt, __fortify_ap);
else
__r = __vswprintf_alias (__s, __n, __fmt, __fortify_ap);
__builtin_va_end (__fortify_ap);
return __r;
}
#elif !defined __cplusplus
/* XXX We might want to have support in gcc for swprintf. */
# define swprintf(s, n, ...) \
(__glibc_objsize (s) != (size_t) -1 || __USE_FORTIFY_LEVEL > 1 \
? __swprintf_chk (s, n, __USE_FORTIFY_LEVEL - 1, \
__glibc_objsize (s) / sizeof (wchar_t), __VA_ARGS__) \
: swprintf (s, n, __VA_ARGS__))
#endif
__fortify_function int
__NTH (vswprintf (wchar_t *__restrict __s, size_t __n,
const wchar_t *__restrict __fmt, __gnuc_va_list __ap))
{
size_t __sz = __glibc_objsize (__s);
if (__sz != (size_t) -1 || __USE_FORTIFY_LEVEL > 1)
return __vswprintf_chk (__s, __n, __USE_FORTIFY_LEVEL - 1,
__sz / sizeof (wchar_t), __fmt, __ap);
return __vswprintf_alias (__s, __n, __fmt, __ap);
}
#if __USE_FORTIFY_LEVEL > 1
# ifdef __va_arg_pack
__fortify_function int
wprintf (const wchar_t *__restrict __fmt, ...)
{
return __wprintf_chk (__USE_FORTIFY_LEVEL - 1, __fmt, __va_arg_pack ());
}
__fortify_function int
fwprintf (__FILE *__restrict __stream, const wchar_t *__restrict __fmt, ...)
{
return __fwprintf_chk (__stream, __USE_FORTIFY_LEVEL - 1, __fmt,
__va_arg_pack ());
}
# elif !defined __cplusplus
# define wprintf(...) \
__wprintf_chk (__USE_FORTIFY_LEVEL - 1, __VA_ARGS__)
# define fwprintf(stream, ...) \
__fwprintf_chk (stream, __USE_FORTIFY_LEVEL - 1, __VA_ARGS__)
# endif
__fortify_function int
vwprintf (const wchar_t *__restrict __fmt, __gnuc_va_list __ap)
{
return __vwprintf_chk (__USE_FORTIFY_LEVEL - 1, __fmt, __ap);
}
__fortify_function int
vfwprintf (__FILE *__restrict __stream,
const wchar_t *__restrict __fmt, __gnuc_va_list __ap)
{
return __vfwprintf_chk (__stream, __USE_FORTIFY_LEVEL - 1, __fmt, __ap);
}
#endif
__fortify_function __attribute_overloadable__ __wur wchar_t *
fgetws (__fortify_clang_overload_arg (wchar_t *, __restrict, __s), int __n,
__FILE *__restrict __stream)
__fortify_clang_warning_only_if_bos_lt2 (__n, __s, sizeof (wchar_t),
"fgetws called with length bigger "
"than size of destination buffer")
{
size_t __sz = __glibc_objsize (__s);
if (__glibc_safe_or_unknown_len (__n, sizeof (wchar_t), __sz))
return __fgetws_alias (__s, __n, __stream);
#if !__fortify_use_clang
if (__glibc_unsafe_len (__n, sizeof (wchar_t), __sz))
return __fgetws_chk_warn (__s, __sz / sizeof (wchar_t), __n, __stream);
#endif
return __fgetws_chk (__s, __sz / sizeof (wchar_t), __n, __stream);
}
#ifdef __USE_GNU
__fortify_function __attribute_overloadable__ __wur wchar_t *
fgetws_unlocked (__fortify_clang_overload_arg (wchar_t *, __restrict, __s),
int __n, __FILE *__restrict __stream)
__fortify_clang_warning_only_if_bos_lt2 (__n, __s, sizeof (wchar_t),
"fgetws_unlocked called with length bigger "
"than size of destination buffer")
{
size_t __sz = __glibc_objsize (__s);
if (__glibc_safe_or_unknown_len (__n, sizeof (wchar_t), __sz))
return __fgetws_unlocked_alias (__s, __n, __stream);
# if !__fortify_use_clang
if (__glibc_unsafe_len (__n, sizeof (wchar_t), __sz))
return __fgetws_unlocked_chk_warn (__s, __sz / sizeof (wchar_t), __n,
__stream);
# endif
return __fgetws_unlocked_chk (__s, __sz / sizeof (wchar_t), __n, __stream);
}
#endif
__fortify_function __attribute_overloadable__ __wur size_t
__NTH (wcrtomb (__fortify_clang_overload_arg (char *, __restrict, __s),
wchar_t __wchar, mbstate_t *__restrict __ps))
{
/* We would have to include <limits.h> to get a definition of MB_LEN_MAX.
But this would only disturb the namespace. So we define our own
version here. */
#define __WCHAR_MB_LEN_MAX 16
#if defined MB_LEN_MAX && MB_LEN_MAX != __WCHAR_MB_LEN_MAX
# error "Assumed value of MB_LEN_MAX wrong"
#endif
if (__glibc_objsize (__s) != (size_t) -1
&& __WCHAR_MB_LEN_MAX > __glibc_objsize (__s))
return __wcrtomb_chk (__s, __wchar, __ps, __glibc_objsize (__s));
return __wcrtomb_alias (__s, __wchar, __ps);
}
__fortify_function __attribute_overloadable__ size_t
__NTH (mbsrtowcs (__fortify_clang_overload_arg (wchar_t *, __restrict, __dst),
const char **__restrict __src,
size_t __len, mbstate_t *__restrict __ps))
__fortify_clang_warning_only_if_bos_lt2 (__len, __dst, sizeof (wchar_t),
"mbsrtowcs called with dst buffer "
"smaller than len * sizeof (wchar_t)")
{
return __glibc_fortify_n (mbsrtowcs, __len, sizeof (wchar_t),
__glibc_objsize (__dst),
__dst, __src, __len, __ps);
}
__fortify_function __attribute_overloadable__ size_t
__NTH (wcsrtombs (__fortify_clang_overload_arg (char *, __restrict, __dst),
const wchar_t **__restrict __src,
size_t __len, mbstate_t *__restrict __ps))
__fortify_clang_warning_only_if_bos_lt (__len, __dst,
"wcsrtombs called with dst buffer "
"smaller than len")
{
return __glibc_fortify (wcsrtombs, __len, sizeof (char),
__glibc_objsize (__dst),
__dst, __src, __len, __ps);
}
#ifdef __USE_XOPEN2K8
__fortify_function __attribute_overloadable__ size_t
__NTH (mbsnrtowcs (__fortify_clang_overload_arg (wchar_t *, __restrict, __dst),
const char **__restrict __src, size_t __nmc, size_t __len,
mbstate_t *__restrict __ps))
__fortify_clang_warning_only_if_bos_lt (sizeof (wchar_t) * __len, __dst,
"mbsnrtowcs called with dst buffer "
"smaller than len * sizeof (wchar_t)")
{
return __glibc_fortify_n (mbsnrtowcs, __len, sizeof (wchar_t),
__glibc_objsize (__dst),
__dst, __src, __nmc, __len, __ps);
}
__fortify_function __attribute_overloadable__ size_t
__NTH (wcsnrtombs (__fortify_clang_overload_arg (char *, __restrict, __dst),
const wchar_t **__restrict __src, size_t __nwc,
size_t __len, mbstate_t *__restrict __ps))
__fortify_clang_warning_only_if_bos_lt (__len, __dst,
"wcsnrtombs called with dst buffer "
"smaller than len")
{
return __glibc_fortify (wcsnrtombs, __len, sizeof (char),
__glibc_objsize (__dst),
__dst, __src, __nwc, __len, __ps);
}
#endif
|