/usr/include/x86_64-linux-gnu/bits/string2.h is in libc6-dev 2.23-0ubuntu3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 | /* Machine-independant string function optimizations.
Copyright (C) 1997-2016 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
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 _STRING_H
# error "Never use <bits/string2.h> directly; include <string.h> instead."
#endif
#ifndef __NO_STRING_INLINES
/* Unlike the definitions in the header <bits/string.h> the
definitions contained here are not optimized down to assembler
level. Those optimizations are not always a good idea since this
means the code size increases a lot. Instead the definitions here
optimize some functions in a way which do not dramatically
increase the code size and which do not use assembler. The main
trick is to use GCC's `__builtin_constant_p' function.
Every function XXX which has a defined version in
<bits/string.h> must be accompanied by a symbol _HAVE_STRING_ARCH_XXX
to make sure we don't get redefinitions.
We must use here macros instead of inline functions since the
trick won't work with the latter. */
#ifndef __STRING_INLINE
# ifdef __cplusplus
# define __STRING_INLINE inline
# else
# define __STRING_INLINE __extern_inline
# endif
#endif
#if _STRING_INLINE_unaligned
/* If we can do unaligned memory accesses we must know the endianess. */
# include <endian.h>
# include <bits/types.h>
# if __BYTE_ORDER == __LITTLE_ENDIAN
# define __STRING2_SMALL_GET16(src, idx) \
(((const unsigned char *) (const char *) (src))[idx + 1] << 8 \
| ((const unsigned char *) (const char *) (src))[idx])
# define __STRING2_SMALL_GET32(src, idx) \
(((((const unsigned char *) (const char *) (src))[idx + 3] << 8 \
| ((const unsigned char *) (const char *) (src))[idx + 2]) << 8 \
| ((const unsigned char *) (const char *) (src))[idx + 1]) << 8 \
| ((const unsigned char *) (const char *) (src))[idx])
# else
# define __STRING2_SMALL_GET16(src, idx) \
(((const unsigned char *) (const char *) (src))[idx] << 8 \
| ((const unsigned char *) (const char *) (src))[idx + 1])
# define __STRING2_SMALL_GET32(src, idx) \
(((((const unsigned char *) (const char *) (src))[idx] << 8 \
| ((const unsigned char *) (const char *) (src))[idx + 1]) << 8 \
| ((const unsigned char *) (const char *) (src))[idx + 2]) << 8 \
| ((const unsigned char *) (const char *) (src))[idx + 3])
# endif
#else
/* These are a few types we need for the optimizations if we cannot
use unaligned memory accesses. */
# define __STRING2_COPY_TYPE(N) \
typedef struct { unsigned char __arr[N]; } \
__attribute__ ((__packed__)) __STRING2_COPY_ARR##N
__STRING2_COPY_TYPE (2);
__STRING2_COPY_TYPE (3);
__STRING2_COPY_TYPE (4);
__STRING2_COPY_TYPE (5);
__STRING2_COPY_TYPE (6);
__STRING2_COPY_TYPE (7);
__STRING2_COPY_TYPE (8);
# undef __STRING2_COPY_TYPE
#endif
/* Dereferencing a pointer arg to run sizeof on it fails for the void
pointer case, so we use this instead.
Note that __x is evaluated twice. */
#define __string2_1bptr_p(__x) \
((size_t)(const void *)((__x) + 1) - (size_t)(const void *)(__x) == 1)
/* Set N bytes of S to C. */
#if !defined _HAVE_STRING_ARCH_memset
# if !__GNUC_PREREQ (3, 0)
# if _STRING_INLINE_unaligned
# define memset(s, c, n) \
(__extension__ (__builtin_constant_p (n) && (n) <= 16 \
? ((n) == 1 \
? __memset_1 (s, c) \
: __memset_gc (s, c, n)) \
: (__builtin_constant_p (c) && (c) == '\0' \
? ({ void *__s = (s); __bzero (__s, n); __s; }) \
: memset (s, c, n))))
# define __memset_1(s, c) ({ void *__s = (s); \
*((__uint8_t *) __s) = (__uint8_t) c; __s; })
# define __memset_gc(s, c, n) \
({ void *__s = (s); \
union { \
unsigned int __ui; \
unsigned short int __usi; \
unsigned char __uc; \
} *__u = __s; \
__uint8_t __c = (__uint8_t) (c); \
\
/* This `switch' statement will be removed at compile-time. */ \
switch ((unsigned int) (n)) \
{ \
case 15: \
__u->__ui = __c * 0x01010101; \
__u = __extension__ ((void *) __u + 4); \
case 11: \
__u->__ui = __c * 0x01010101; \
__u = __extension__ ((void *) __u + 4); \
case 7: \
__u->__ui = __c * 0x01010101; \
__u = __extension__ ((void *) __u + 4); \
case 3: \
__u->__usi = (unsigned short int) __c * 0x0101; \
__u = __extension__ ((void *) __u + 2); \
__u->__uc = (unsigned char) __c; \
break; \
\
case 14: \
__u->__ui = __c * 0x01010101; \
__u = __extension__ ((void *) __u + 4); \
case 10: \
__u->__ui = __c * 0x01010101; \
__u = __extension__ ((void *) __u + 4); \
case 6: \
__u->__ui = __c * 0x01010101; \
__u = __extension__ ((void *) __u + 4); \
case 2: \
__u->__usi = (unsigned short int) __c * 0x0101; \
break; \
\
case 13: \
__u->__ui = __c * 0x01010101; \
__u = __extension__ ((void *) __u + 4); \
case 9: \
__u->__ui = __c * 0x01010101; \
__u = __extension__ ((void *) __u + 4); \
case 5: \
__u->__ui = __c * 0x01010101; \
__u = __extension__ ((void *) __u + 4); \
case 1: \
__u->__uc = (unsigned char) __c; \
break; \
\
case 16: \
__u->__ui = __c * 0x01010101; \
__u = __extension__ ((void *) __u + 4); \
case 12: \
__u->__ui = __c * 0x01010101; \
__u = __extension__ ((void *) __u + 4); \
case 8: \
__u->__ui = __c * 0x01010101; \
__u = __extension__ ((void *) __u + 4); \
case 4: \
__u->__ui = __c * 0x01010101; \
case 0: \
break; \
} \
\
__s; })
# else
# define memset(s, c, n) \
(__extension__ (__builtin_constant_p (c) && (c) == '\0' \
? ({ void *__s = (s); __bzero (__s, n); __s; }) \
: memset (s, c, n)))
# endif
# endif
/* GCC < 3.0 optimizes memset(s, 0, n) but not bzero(s, n).
The optimization is broken before EGCS 1.1.
GCC 3.0+ has __builtin_bzero as well, but at least till GCC 3.4
if it decides to call the library function, it calls memset
and not bzero. */
# if __GNUC_PREREQ (2, 91)
# define __bzero(s, n) __builtin_memset (s, '\0', n)
# endif
#endif
/* Copy N bytes from SRC to DEST, returning pointer to byte following the
last copied. */
#ifdef __USE_GNU
# if !defined _HAVE_STRING_ARCH_mempcpy || defined _FORCE_INLINES
# ifndef _HAVE_STRING_ARCH_mempcpy
# if __GNUC_PREREQ (3, 4)
# define __mempcpy(dest, src, n) __builtin_mempcpy (dest, src, n)
# elif __GNUC_PREREQ (3, 0)
# define __mempcpy(dest, src, n) \
(__extension__ (__builtin_constant_p (src) && __builtin_constant_p (n) \
&& __string2_1bptr_p (src) && n <= 8 \
? __builtin_memcpy (dest, src, n) + (n) \
: __mempcpy (dest, src, n)))
# else
# define __mempcpy(dest, src, n) \
(__extension__ (__builtin_constant_p (src) && __builtin_constant_p (n) \
&& __string2_1bptr_p (src) && n <= 8 \
? __mempcpy_small (dest, __mempcpy_args (src), n) \
: __mempcpy (dest, src, n)))
# endif
/* In glibc we use this function frequently but for namespace reasons
we have to use the name `__mempcpy'. */
# define mempcpy(dest, src, n) __mempcpy (dest, src, n)
# endif
# if !__GNUC_PREREQ (3, 0) || defined _FORCE_INLINES
# if _STRING_INLINE_unaligned
# ifndef _FORCE_INLINES
# define __mempcpy_args(src) \
((const char *) (src))[0], ((const char *) (src))[2], \
((const char *) (src))[4], ((const char *) (src))[6], \
__extension__ __STRING2_SMALL_GET16 (src, 0), \
__extension__ __STRING2_SMALL_GET16 (src, 4), \
__extension__ __STRING2_SMALL_GET32 (src, 0), \
__extension__ __STRING2_SMALL_GET32 (src, 4)
# endif
__STRING_INLINE void *__mempcpy_small (void *, char, char, char, char,
__uint16_t, __uint16_t, __uint32_t,
__uint32_t, size_t);
__STRING_INLINE void *
__mempcpy_small (void *__dest1,
char __src0_1, char __src2_1, char __src4_1, char __src6_1,
__uint16_t __src0_2, __uint16_t __src4_2,
__uint32_t __src0_4, __uint32_t __src4_4,
size_t __srclen)
{
union {
__uint32_t __ui;
__uint16_t __usi;
unsigned char __uc;
unsigned char __c;
} *__u = __dest1;
switch ((unsigned int) __srclen)
{
case 1:
__u->__c = __src0_1;
__u = __extension__ ((void *) __u + 1);
break;
case 2:
__u->__usi = __src0_2;
__u = __extension__ ((void *) __u + 2);
break;
case 3:
__u->__usi = __src0_2;
__u = __extension__ ((void *) __u + 2);
__u->__c = __src2_1;
__u = __extension__ ((void *) __u + 1);
break;
case 4:
__u->__ui = __src0_4;
__u = __extension__ ((void *) __u + 4);
break;
case 5:
__u->__ui = __src0_4;
__u = __extension__ ((void *) __u + 4);
__u->__c = __src4_1;
__u = __extension__ ((void *) __u + 1);
break;
case 6:
__u->__ui = __src0_4;
__u = __extension__ ((void *) __u + 4);
__u->__usi = __src4_2;
__u = __extension__ ((void *) __u + 2);
break;
case 7:
__u->__ui = __src0_4;
__u = __extension__ ((void *) __u + 4);
__u->__usi = __src4_2;
__u = __extension__ ((void *) __u + 2);
__u->__c = __src6_1;
__u = __extension__ ((void *) __u + 1);
break;
case 8:
__u->__ui = __src0_4;
__u = __extension__ ((void *) __u + 4);
__u->__ui = __src4_4;
__u = __extension__ ((void *) __u + 4);
break;
}
return (void *) __u;
}
# else
# ifndef _FORCE_INLINES
# define __mempcpy_args(src) \
((const char *) (src))[0], \
__extension__ ((__STRING2_COPY_ARR2) \
{ { ((const char *) (src))[0], ((const char *) (src))[1] } }), \
__extension__ ((__STRING2_COPY_ARR3) \
{ { ((const char *) (src))[0], ((const char *) (src))[1], \
((const char *) (src))[2] } }), \
__extension__ ((__STRING2_COPY_ARR4) \
{ { ((const char *) (src))[0], ((const char *) (src))[1], \
((const char *) (src))[2], ((const char *) (src))[3] } }), \
__extension__ ((__STRING2_COPY_ARR5) \
{ { ((const char *) (src))[0], ((const char *) (src))[1], \
((const char *) (src))[2], ((const char *) (src))[3], \
((const char *) (src))[4] } }), \
__extension__ ((__STRING2_COPY_ARR6) \
{ { ((const char *) (src))[0], ((const char *) (src))[1], \
((const char *) (src))[2], ((const char *) (src))[3], \
((const char *) (src))[4], ((const char *) (src))[5] } }), \
__extension__ ((__STRING2_COPY_ARR7) \
{ { ((const char *) (src))[0], ((const char *) (src))[1], \
((const char *) (src))[2], ((const char *) (src))[3], \
((const char *) (src))[4], ((const char *) (src))[5], \
((const char *) (src))[6] } }), \
__extension__ ((__STRING2_COPY_ARR8) \
{ { ((const char *) (src))[0], ((const char *) (src))[1], \
((const char *) (src))[2], ((const char *) (src))[3], \
((const char *) (src))[4], ((const char *) (src))[5], \
((const char *) (src))[6], ((const char *) (src))[7] } })
# endif
__STRING_INLINE void *__mempcpy_small (void *, char, __STRING2_COPY_ARR2,
__STRING2_COPY_ARR3,
__STRING2_COPY_ARR4,
__STRING2_COPY_ARR5,
__STRING2_COPY_ARR6,
__STRING2_COPY_ARR7,
__STRING2_COPY_ARR8, size_t);
__STRING_INLINE void *
__mempcpy_small (void *__dest, char __src1,
__STRING2_COPY_ARR2 __src2, __STRING2_COPY_ARR3 __src3,
__STRING2_COPY_ARR4 __src4, __STRING2_COPY_ARR5 __src5,
__STRING2_COPY_ARR6 __src6, __STRING2_COPY_ARR7 __src7,
__STRING2_COPY_ARR8 __src8, size_t __srclen)
{
union {
char __c;
__STRING2_COPY_ARR2 __sca2;
__STRING2_COPY_ARR3 __sca3;
__STRING2_COPY_ARR4 __sca4;
__STRING2_COPY_ARR5 __sca5;
__STRING2_COPY_ARR6 __sca6;
__STRING2_COPY_ARR7 __sca7;
__STRING2_COPY_ARR8 __sca8;
} *__u = __dest;
switch ((unsigned int) __srclen)
{
case 1:
__u->__c = __src1;
break;
case 2:
__extension__ __u->__sca2 = __src2;
break;
case 3:
__extension__ __u->__sca3 = __src3;
break;
case 4:
__extension__ __u->__sca4 = __src4;
break;
case 5:
__extension__ __u->__sca5 = __src5;
break;
case 6:
__extension__ __u->__sca6 = __src6;
break;
case 7:
__extension__ __u->__sca7 = __src7;
break;
case 8:
__extension__ __u->__sca8 = __src8;
break;
}
return __extension__ ((void *) __u + __srclen);
}
# endif
# endif
# endif
#endif
/* Return pointer to C in S. */
#ifndef _HAVE_STRING_ARCH_strchr
extern void *__rawmemchr (const void *__s, int __c);
# if __GNUC_PREREQ (3, 2)
# define strchr(s, c) \
(__extension__ (__builtin_constant_p (c) && !__builtin_constant_p (s) \
&& (c) == '\0' \
? (char *) __rawmemchr (s, c) \
: __builtin_strchr (s, c)))
# else
# define strchr(s, c) \
(__extension__ (__builtin_constant_p (c) && (c) == '\0' \
? (char *) __rawmemchr (s, c) \
: strchr (s, c)))
# endif
#endif
/* Copy SRC to DEST. */
#if (!defined _HAVE_STRING_ARCH_strcpy && !__GNUC_PREREQ (3, 0)) \
|| defined _FORCE_INLINES
# if !defined _HAVE_STRING_ARCH_strcpy && !__GNUC_PREREQ (3, 0)
# define strcpy(dest, src) \
(__extension__ (__builtin_constant_p (src) \
? (__string2_1bptr_p (src) && strlen (src) + 1 <= 8 \
? __strcpy_small (dest, __strcpy_args (src), \
strlen (src) + 1) \
: (char *) memcpy (dest, src, strlen (src) + 1)) \
: strcpy (dest, src)))
# endif
# if _STRING_INLINE_unaligned
# ifndef _FORCE_INLINES
# define __strcpy_args(src) \
__extension__ __STRING2_SMALL_GET16 (src, 0), \
__extension__ __STRING2_SMALL_GET16 (src, 4), \
__extension__ __STRING2_SMALL_GET32 (src, 0), \
__extension__ __STRING2_SMALL_GET32 (src, 4)
# endif
__STRING_INLINE char *__strcpy_small (char *, __uint16_t, __uint16_t,
__uint32_t, __uint32_t, size_t);
__STRING_INLINE char *
__strcpy_small (char *__dest,
__uint16_t __src0_2, __uint16_t __src4_2,
__uint32_t __src0_4, __uint32_t __src4_4,
size_t __srclen)
{
union {
__uint32_t __ui;
__uint16_t __usi;
unsigned char __uc;
} *__u = (void *) __dest;
switch ((unsigned int) __srclen)
{
case 1:
__u->__uc = '\0';
break;
case 2:
__u->__usi = __src0_2;
break;
case 3:
__u->__usi = __src0_2;
__u = __extension__ ((void *) __u + 2);
__u->__uc = '\0';
break;
case 4:
__u->__ui = __src0_4;
break;
case 5:
__u->__ui = __src0_4;
__u = __extension__ ((void *) __u + 4);
__u->__uc = '\0';
break;
case 6:
__u->__ui = __src0_4;
__u = __extension__ ((void *) __u + 4);
__u->__usi = __src4_2;
break;
case 7:
__u->__ui = __src0_4;
__u = __extension__ ((void *) __u + 4);
__u->__usi = __src4_2;
__u = __extension__ ((void *) __u + 2);
__u->__uc = '\0';
break;
case 8:
__u->__ui = __src0_4;
__u = __extension__ ((void *) __u + 4);
__u->__ui = __src4_4;
break;
}
return __dest;
}
# else
# ifndef _FORCE_INLINES
# define __strcpy_args(src) \
__extension__ ((__STRING2_COPY_ARR2) \
{ { ((const char *) (src))[0], '\0' } }), \
__extension__ ((__STRING2_COPY_ARR3) \
{ { ((const char *) (src))[0], ((const char *) (src))[1], \
'\0' } }), \
__extension__ ((__STRING2_COPY_ARR4) \
{ { ((const char *) (src))[0], ((const char *) (src))[1], \
((const char *) (src))[2], '\0' } }), \
__extension__ ((__STRING2_COPY_ARR5) \
{ { ((const char *) (src))[0], ((const char *) (src))[1], \
((const char *) (src))[2], ((const char *) (src))[3], \
'\0' } }), \
__extension__ ((__STRING2_COPY_ARR6) \
{ { ((const char *) (src))[0], ((const char *) (src))[1], \
((const char *) (src))[2], ((const char *) (src))[3], \
((const char *) (src))[4], '\0' } }), \
__extension__ ((__STRING2_COPY_ARR7) \
{ { ((const char *) (src))[0], ((const char *) (src))[1], \
((const char *) (src))[2], ((const char *) (src))[3], \
((const char *) (src))[4], ((const char *) (src))[5], \
'\0' } }), \
__extension__ ((__STRING2_COPY_ARR8) \
{ { ((const char *) (src))[0], ((const char *) (src))[1], \
((const char *) (src))[2], ((const char *) (src))[3], \
((const char *) (src))[4], ((const char *) (src))[5], \
((const char *) (src))[6], '\0' } })
# endif
__STRING_INLINE char *__strcpy_small (char *, __STRING2_COPY_ARR2,
__STRING2_COPY_ARR3,
__STRING2_COPY_ARR4,
__STRING2_COPY_ARR5,
__STRING2_COPY_ARR6,
__STRING2_COPY_ARR7,
__STRING2_COPY_ARR8, size_t);
__STRING_INLINE char *
__strcpy_small (char *__dest,
__STRING2_COPY_ARR2 __src2, __STRING2_COPY_ARR3 __src3,
__STRING2_COPY_ARR4 __src4, __STRING2_COPY_ARR5 __src5,
__STRING2_COPY_ARR6 __src6, __STRING2_COPY_ARR7 __src7,
__STRING2_COPY_ARR8 __src8, size_t __srclen)
{
union {
char __c;
__STRING2_COPY_ARR2 __sca2;
__STRING2_COPY_ARR3 __sca3;
__STRING2_COPY_ARR4 __sca4;
__STRING2_COPY_ARR5 __sca5;
__STRING2_COPY_ARR6 __sca6;
__STRING2_COPY_ARR7 __sca7;
__STRING2_COPY_ARR8 __sca8;
} *__u = (void *) __dest;
switch ((unsigned int) __srclen)
{
case 1:
__u->__c = '\0';
break;
case 2:
__extension__ __u->__sca2 = __src2;
break;
case 3:
__extension__ __u->__sca3 = __src3;
break;
case 4:
__extension__ __u->__sca4 = __src4;
break;
case 5:
__extension__ __u->__sca5 = __src5;
break;
case 6:
__extension__ __u->__sca6 = __src6;
break;
case 7:
__extension__ __u->__sca7 = __src7;
break;
case 8:
__extension__ __u->__sca8 = __src8;
break;
}
return __dest;
}
# endif
#endif
/* Copy SRC to DEST, returning pointer to final NUL byte. */
#ifdef __USE_GNU
# if !defined _HAVE_STRING_ARCH_stpcpy || defined _FORCE_INLINES
# ifndef _HAVE_STRING_ARCH_stpcpy
# if __GNUC_PREREQ (3, 4)
# define __stpcpy(dest, src) __builtin_stpcpy (dest, src)
# elif __GNUC_PREREQ (3, 0)
# define __stpcpy(dest, src) \
(__extension__ (__builtin_constant_p (src) \
? (__string2_1bptr_p (src) && strlen (src) + 1 <= 8 \
? __builtin_strcpy (dest, src) + strlen (src) \
: ((char *) (__mempcpy) (dest, src, strlen (src) + 1) \
- 1)) \
: __stpcpy (dest, src)))
# else
# define __stpcpy(dest, src) \
(__extension__ (__builtin_constant_p (src) \
? (__string2_1bptr_p (src) && strlen (src) + 1 <= 8 \
? __stpcpy_small (dest, __stpcpy_args (src), \
strlen (src) + 1) \
: ((char *) (__mempcpy) (dest, src, strlen (src) + 1) \
- 1)) \
: __stpcpy (dest, src)))
# endif
/* In glibc we use this function frequently but for namespace reasons
we have to use the name `__stpcpy'. */
# define stpcpy(dest, src) __stpcpy (dest, src)
# endif
# if !__GNUC_PREREQ (3, 0) || defined _FORCE_INLINES
# if _STRING_INLINE_unaligned
# ifndef _FORCE_INLINES
# define __stpcpy_args(src) \
__extension__ __STRING2_SMALL_GET16 (src, 0), \
__extension__ __STRING2_SMALL_GET16 (src, 4), \
__extension__ __STRING2_SMALL_GET32 (src, 0), \
__extension__ __STRING2_SMALL_GET32 (src, 4)
# endif
__STRING_INLINE char *__stpcpy_small (char *, __uint16_t, __uint16_t,
__uint32_t, __uint32_t, size_t);
__STRING_INLINE char *
__stpcpy_small (char *__dest,
__uint16_t __src0_2, __uint16_t __src4_2,
__uint32_t __src0_4, __uint32_t __src4_4,
size_t __srclen)
{
union {
unsigned int __ui;
unsigned short int __usi;
unsigned char __uc;
char __c;
} *__u = (void *) __dest;
switch ((unsigned int) __srclen)
{
case 1:
__u->__uc = '\0';
break;
case 2:
__u->__usi = __src0_2;
__u = __extension__ ((void *) __u + 1);
break;
case 3:
__u->__usi = __src0_2;
__u = __extension__ ((void *) __u + 2);
__u->__uc = '\0';
break;
case 4:
__u->__ui = __src0_4;
__u = __extension__ ((void *) __u + 3);
break;
case 5:
__u->__ui = __src0_4;
__u = __extension__ ((void *) __u + 4);
__u->__uc = '\0';
break;
case 6:
__u->__ui = __src0_4;
__u = __extension__ ((void *) __u + 4);
__u->__usi = __src4_2;
__u = __extension__ ((void *) __u + 1);
break;
case 7:
__u->__ui = __src0_4;
__u = __extension__ ((void *) __u + 4);
__u->__usi = __src4_2;
__u = __extension__ ((void *) __u + 2);
__u->__uc = '\0';
break;
case 8:
__u->__ui = __src0_4;
__u = __extension__ ((void *) __u + 4);
__u->__ui = __src4_4;
__u = __extension__ ((void *) __u + 3);
break;
}
return &__u->__c;
}
# else
# ifndef _FORCE_INLINES
# define __stpcpy_args(src) \
__extension__ ((__STRING2_COPY_ARR2) \
{ { ((const char *) (src))[0], '\0' } }), \
__extension__ ((__STRING2_COPY_ARR3) \
{ { ((const char *) (src))[0], ((const char *) (src))[1], \
'\0' } }), \
__extension__ ((__STRING2_COPY_ARR4) \
{ { ((const char *) (src))[0], ((const char *) (src))[1], \
((const char *) (src))[2], '\0' } }), \
__extension__ ((__STRING2_COPY_ARR5) \
{ { ((const char *) (src))[0], ((const char *) (src))[1], \
((const char *) (src))[2], ((const char *) (src))[3], \
'\0' } }), \
__extension__ ((__STRING2_COPY_ARR6) \
{ { ((const char *) (src))[0], ((const char *) (src))[1], \
((const char *) (src))[2], ((const char *) (src))[3], \
((const char *) (src))[4], '\0' } }), \
__extension__ ((__STRING2_COPY_ARR7) \
{ { ((const char *) (src))[0], ((const char *) (src))[1], \
((const char *) (src))[2], ((const char *) (src))[3], \
((const char *) (src))[4], ((const char *) (src))[5], \
'\0' } }), \
__extension__ ((__STRING2_COPY_ARR8) \
{ { ((const char *) (src))[0], ((const char *) (src))[1], \
((const char *) (src))[2], ((const char *) (src))[3], \
((const char *) (src))[4], ((const char *) (src))[5], \
((const char *) (src))[6], '\0' } })
# endif
__STRING_INLINE char *__stpcpy_small (char *, __STRING2_COPY_ARR2,
__STRING2_COPY_ARR3,
__STRING2_COPY_ARR4,
__STRING2_COPY_ARR5,
__STRING2_COPY_ARR6,
__STRING2_COPY_ARR7,
__STRING2_COPY_ARR8, size_t);
__STRING_INLINE char *
__stpcpy_small (char *__dest,
__STRING2_COPY_ARR2 __src2, __STRING2_COPY_ARR3 __src3,
__STRING2_COPY_ARR4 __src4, __STRING2_COPY_ARR5 __src5,
__STRING2_COPY_ARR6 __src6, __STRING2_COPY_ARR7 __src7,
__STRING2_COPY_ARR8 __src8, size_t __srclen)
{
union {
char __c;
__STRING2_COPY_ARR2 __sca2;
__STRING2_COPY_ARR3 __sca3;
__STRING2_COPY_ARR4 __sca4;
__STRING2_COPY_ARR5 __sca5;
__STRING2_COPY_ARR6 __sca6;
__STRING2_COPY_ARR7 __sca7;
__STRING2_COPY_ARR8 __sca8;
} *__u = (void *) __dest;
switch ((unsigned int) __srclen)
{
case 1:
__u->__c = '\0';
break;
case 2:
__extension__ __u->__sca2 = __src2;
break;
case 3:
__extension__ __u->__sca3 = __src3;
break;
case 4:
__extension__ __u->__sca4 = __src4;
break;
case 5:
__extension__ __u->__sca5 = __src5;
break;
case 6:
__extension__ __u->__sca6 = __src6;
break;
case 7:
__extension__ __u->__sca7 = __src7;
break;
case 8:
__extension__ __u->__sca8 = __src8;
break;
}
return __dest + __srclen - 1;
}
# endif
# endif
# endif
#endif
/* Copy no more than N characters of SRC to DEST. */
#ifndef _HAVE_STRING_ARCH_strncpy
# if __GNUC_PREREQ (3, 2)
# define strncpy(dest, src, n) __builtin_strncpy (dest, src, n)
# else
# define strncpy(dest, src, n) \
(__extension__ (__builtin_constant_p (src) && __builtin_constant_p (n) \
? (strlen (src) + 1 >= ((size_t) (n)) \
? (char *) memcpy (dest, src, n) \
: strncpy (dest, src, n)) \
: strncpy (dest, src, n)))
# endif
#endif
/* Append no more than N characters from SRC onto DEST. */
#ifndef _HAVE_STRING_ARCH_strncat
# ifdef _USE_STRING_ARCH_strchr
# define strncat(dest, src, n) \
(__extension__ ({ char *__dest = (dest); \
__builtin_constant_p (src) && __builtin_constant_p (n) \
? (strlen (src) < ((size_t) (n)) \
? strcat (__dest, src) \
: (*((char *) __mempcpy (strchr (__dest, '\0'), \
src, n)) = '\0', __dest)) \
: strncat (dest, src, n); }))
# elif __GNUC_PREREQ (3, 2)
# define strncat(dest, src, n) __builtin_strncat (dest, src, n)
# else
# define strncat(dest, src, n) \
(__extension__ (__builtin_constant_p (src) && __builtin_constant_p (n) \
? (strlen (src) < ((size_t) (n)) \
? strcat (dest, src) \
: strncat (dest, src, n)) \
: strncat (dest, src, n)))
# endif
#endif
/* Compare characters of S1 and S2. */
#ifndef _HAVE_STRING_ARCH_strcmp
# if __GNUC_PREREQ (3, 2)
# define strcmp(s1, s2) \
__extension__ \
({ size_t __s1_len, __s2_len; \
(__builtin_constant_p (s1) && __builtin_constant_p (s2) \
&& (__s1_len = __builtin_strlen (s1), __s2_len = __builtin_strlen (s2), \
(!__string2_1bptr_p (s1) || __s1_len >= 4) \
&& (!__string2_1bptr_p (s2) || __s2_len >= 4)) \
? __builtin_strcmp (s1, s2) \
: (__builtin_constant_p (s1) && __string2_1bptr_p (s1) \
&& (__s1_len = __builtin_strlen (s1), __s1_len < 4) \
? (__builtin_constant_p (s2) && __string2_1bptr_p (s2) \
? __builtin_strcmp (s1, s2) \
: __strcmp_cg (s1, s2, __s1_len)) \
: (__builtin_constant_p (s2) && __string2_1bptr_p (s2) \
&& (__s2_len = __builtin_strlen (s2), __s2_len < 4) \
? (__builtin_constant_p (s1) && __string2_1bptr_p (s1) \
? __builtin_strcmp (s1, s2) \
: __strcmp_gc (s1, s2, __s2_len)) \
: __builtin_strcmp (s1, s2)))); })
# else
# define strcmp(s1, s2) \
__extension__ \
({ size_t __s1_len, __s2_len; \
(__builtin_constant_p (s1) && __builtin_constant_p (s2) \
&& (__s1_len = strlen (s1), __s2_len = strlen (s2), \
(!__string2_1bptr_p (s1) || __s1_len >= 4) \
&& (!__string2_1bptr_p (s2) || __s2_len >= 4)) \
? memcmp ((const char *) (s1), (const char *) (s2), \
(__s1_len < __s2_len ? __s1_len : __s2_len) + 1) \
: (__builtin_constant_p (s1) && __string2_1bptr_p (s1) \
&& (__s1_len = strlen (s1), __s1_len < 4) \
? (__builtin_constant_p (s2) && __string2_1bptr_p (s2) \
? __strcmp_cc (s1, s2, __s1_len) \
: __strcmp_cg (s1, s2, __s1_len)) \
: (__builtin_constant_p (s2) && __string2_1bptr_p (s2) \
&& (__s2_len = strlen (s2), __s2_len < 4) \
? (__builtin_constant_p (s1) && __string2_1bptr_p (s1) \
? __strcmp_cc (s1, s2, __s2_len) \
: __strcmp_gc (s1, s2, __s2_len)) \
: strcmp (s1, s2)))); })
# endif
# define __strcmp_cc(s1, s2, l) \
(__extension__ ({ int __result = \
(((const unsigned char *) (const char *) (s1))[0] \
- ((const unsigned char *) (const char *)(s2))[0]); \
if (l > 0 && __result == 0) \
{ \
__result = (((const unsigned char *) \
(const char *) (s1))[1] \
- ((const unsigned char *) \
(const char *) (s2))[1]); \
if (l > 1 && __result == 0) \
{ \
__result = \
(((const unsigned char *) \
(const char *) (s1))[2] \
- ((const unsigned char *) \
(const char *) (s2))[2]); \
if (l > 2 && __result == 0) \
__result = \
(((const unsigned char *) \
(const char *) (s1))[3] \
- ((const unsigned char *) \
(const char *) (s2))[3]); \
} \
} \
__result; }))
# define __strcmp_cg(s1, s2, l1) \
(__extension__ ({ const unsigned char *__s2 = \
(const unsigned char *) (const char *) (s2); \
int __result = \
(((const unsigned char *) (const char *) (s1))[0] \
- __s2[0]); \
if (l1 > 0 && __result == 0) \
{ \
__result = (((const unsigned char *) \
(const char *) (s1))[1] - __s2[1]); \
if (l1 > 1 && __result == 0) \
{ \
__result = (((const unsigned char *) \
(const char *) (s1))[2] - __s2[2]); \
if (l1 > 2 && __result == 0) \
__result = (((const unsigned char *) \
(const char *) (s1))[3] \
- __s2[3]); \
} \
} \
__result; }))
# define __strcmp_gc(s1, s2, l2) (- __strcmp_cg (s2, s1, l2))
#endif
/* Compare N characters of S1 and S2. */
#ifndef _HAVE_STRING_ARCH_strncmp
# define strncmp(s1, s2, n) \
(__extension__ (__builtin_constant_p (n) \
&& ((__builtin_constant_p (s1) \
&& strlen (s1) < ((size_t) (n))) \
|| (__builtin_constant_p (s2) \
&& strlen (s2) < ((size_t) (n)))) \
? strcmp (s1, s2) : strncmp (s1, s2, n)))
#endif
/* Return the length of the initial segment of S which
consists entirely of characters not in REJECT. */
#if !defined _HAVE_STRING_ARCH_strcspn || defined _FORCE_INLINES
# ifndef _HAVE_STRING_ARCH_strcspn
# if __GNUC_PREREQ (3, 2)
# define strcspn(s, reject) \
__extension__ \
({ char __r0, __r1, __r2; \
(__builtin_constant_p (reject) && __string2_1bptr_p (reject) \
? ((__builtin_constant_p (s) && __string2_1bptr_p (s)) \
? __builtin_strcspn (s, reject) \
: ((__r0 = ((const char *) (reject))[0], __r0 == '\0') \
? strlen (s) \
: ((__r1 = ((const char *) (reject))[1], __r1 == '\0') \
? __strcspn_c1 (s, __r0) \
: ((__r2 = ((const char *) (reject))[2], __r2 == '\0') \
? __strcspn_c2 (s, __r0, __r1) \
: (((const char *) (reject))[3] == '\0' \
? __strcspn_c3 (s, __r0, __r1, __r2) \
: __builtin_strcspn (s, reject)))))) \
: __builtin_strcspn (s, reject)); })
# else
# define strcspn(s, reject) \
__extension__ \
({ char __r0, __r1, __r2; \
(__builtin_constant_p (reject) && __string2_1bptr_p (reject) \
? ((__r0 = ((const char *) (reject))[0], __r0 == '\0') \
? strlen (s) \
: ((__r1 = ((const char *) (reject))[1], __r1 == '\0') \
? __strcspn_c1 (s, __r0) \
: ((__r2 = ((const char *) (reject))[2], __r2 == '\0') \
? __strcspn_c2 (s, __r0, __r1) \
: (((const char *) (reject))[3] == '\0' \
? __strcspn_c3 (s, __r0, __r1, __r2) \
: strcspn (s, reject))))) \
: strcspn (s, reject)); })
# endif
# endif
__STRING_INLINE size_t __strcspn_c1 (const char *__s, int __reject);
__STRING_INLINE size_t
__strcspn_c1 (const char *__s, int __reject)
{
size_t __result = 0;
while (__s[__result] != '\0' && __s[__result] != __reject)
++__result;
return __result;
}
__STRING_INLINE size_t __strcspn_c2 (const char *__s, int __reject1,
int __reject2);
__STRING_INLINE size_t
__strcspn_c2 (const char *__s, int __reject1, int __reject2)
{
size_t __result = 0;
while (__s[__result] != '\0' && __s[__result] != __reject1
&& __s[__result] != __reject2)
++__result;
return __result;
}
__STRING_INLINE size_t __strcspn_c3 (const char *__s, int __reject1,
int __reject2, int __reject3);
__STRING_INLINE size_t
__strcspn_c3 (const char *__s, int __reject1, int __reject2,
int __reject3)
{
size_t __result = 0;
while (__s[__result] != '\0' && __s[__result] != __reject1
&& __s[__result] != __reject2 && __s[__result] != __reject3)
++__result;
return __result;
}
#endif
/* Return the length of the initial segment of S which
consists entirely of characters in ACCEPT. */
#if !defined _HAVE_STRING_ARCH_strspn || defined _FORCE_INLINES
# ifndef _HAVE_STRING_ARCH_strspn
# if __GNUC_PREREQ (3, 2)
# define strspn(s, accept) \
__extension__ \
({ char __a0, __a1, __a2; \
(__builtin_constant_p (accept) && __string2_1bptr_p (accept) \
? ((__builtin_constant_p (s) && __string2_1bptr_p (s)) \
? __builtin_strspn (s, accept) \
: ((__a0 = ((const char *) (accept))[0], __a0 == '\0') \
? ((void) (s), (size_t) 0) \
: ((__a1 = ((const char *) (accept))[1], __a1 == '\0') \
? __strspn_c1 (s, __a0) \
: ((__a2 = ((const char *) (accept))[2], __a2 == '\0') \
? __strspn_c2 (s, __a0, __a1) \
: (((const char *) (accept))[3] == '\0' \
? __strspn_c3 (s, __a0, __a1, __a2) \
: __builtin_strspn (s, accept)))))) \
: __builtin_strspn (s, accept)); })
# else
# define strspn(s, accept) \
__extension__ \
({ char __a0, __a1, __a2; \
(__builtin_constant_p (accept) && __string2_1bptr_p (accept) \
? ((__a0 = ((const char *) (accept))[0], __a0 == '\0') \
? ((void) (s), (size_t) 0) \
: ((__a1 = ((const char *) (accept))[1], __a1 == '\0') \
? __strspn_c1 (s, __a0) \
: ((__a2 = ((const char *) (accept))[2], __a2 == '\0') \
? __strspn_c2 (s, __a0, __a1) \
: (((const char *) (accept))[3] == '\0' \
? __strspn_c3 (s, __a0, __a1, __a2) \
: strspn (s, accept))))) \
: strspn (s, accept)); })
# endif
# endif
__STRING_INLINE size_t __strspn_c1 (const char *__s, int __accept);
__STRING_INLINE size_t
__strspn_c1 (const char *__s, int __accept)
{
size_t __result = 0;
/* Please note that __accept never can be '\0'. */
while (__s[__result] == __accept)
++__result;
return __result;
}
__STRING_INLINE size_t __strspn_c2 (const char *__s, int __accept1,
int __accept2);
__STRING_INLINE size_t
__strspn_c2 (const char *__s, int __accept1, int __accept2)
{
size_t __result = 0;
/* Please note that __accept1 and __accept2 never can be '\0'. */
while (__s[__result] == __accept1 || __s[__result] == __accept2)
++__result;
return __result;
}
__STRING_INLINE size_t __strspn_c3 (const char *__s, int __accept1,
int __accept2, int __accept3);
__STRING_INLINE size_t
__strspn_c3 (const char *__s, int __accept1, int __accept2, int __accept3)
{
size_t __result = 0;
/* Please note that __accept1 to __accept3 never can be '\0'. */
while (__s[__result] == __accept1 || __s[__result] == __accept2
|| __s[__result] == __accept3)
++__result;
return __result;
}
#endif
/* Find the first occurrence in S of any character in ACCEPT. */
#if !defined _HAVE_STRING_ARCH_strpbrk || defined _FORCE_INLINES
# ifndef _HAVE_STRING_ARCH_strpbrk
# if __GNUC_PREREQ (3, 2)
# define strpbrk(s, accept) \
__extension__ \
({ char __a0, __a1, __a2; \
(__builtin_constant_p (accept) && __string2_1bptr_p (accept) \
? ((__builtin_constant_p (s) && __string2_1bptr_p (s)) \
? __builtin_strpbrk (s, accept) \
: ((__a0 = ((const char *) (accept))[0], __a0 == '\0') \
? ((void) (s), (char *) NULL) \
: ((__a1 = ((const char *) (accept))[1], __a1 == '\0') \
? __builtin_strchr (s, __a0) \
: ((__a2 = ((const char *) (accept))[2], __a2 == '\0') \
? __strpbrk_c2 (s, __a0, __a1) \
: (((const char *) (accept))[3] == '\0' \
? __strpbrk_c3 (s, __a0, __a1, __a2) \
: __builtin_strpbrk (s, accept)))))) \
: __builtin_strpbrk (s, accept)); })
# else
# define strpbrk(s, accept) \
__extension__ \
({ char __a0, __a1, __a2; \
(__builtin_constant_p (accept) && __string2_1bptr_p (accept) \
? ((__a0 = ((const char *) (accept))[0], __a0 == '\0') \
? ((void) (s), (char *) NULL) \
: ((__a1 = ((const char *) (accept))[1], __a1 == '\0') \
? strchr (s, __a0) \
: ((__a2 = ((const char *) (accept))[2], __a2 == '\0') \
? __strpbrk_c2 (s, __a0, __a1) \
: (((const char *) (accept))[3] == '\0' \
? __strpbrk_c3 (s, __a0, __a1, __a2) \
: strpbrk (s, accept))))) \
: strpbrk (s, accept)); })
# endif
# endif
__STRING_INLINE char *__strpbrk_c2 (const char *__s, int __accept1,
int __accept2);
__STRING_INLINE char *
__strpbrk_c2 (const char *__s, int __accept1, int __accept2)
{
/* Please note that __accept1 and __accept2 never can be '\0'. */
while (*__s != '\0' && *__s != __accept1 && *__s != __accept2)
++__s;
return *__s == '\0' ? NULL : (char *) (size_t) __s;
}
__STRING_INLINE char *__strpbrk_c3 (const char *__s, int __accept1,
int __accept2, int __accept3);
__STRING_INLINE char *
__strpbrk_c3 (const char *__s, int __accept1, int __accept2, int __accept3)
{
/* Please note that __accept1 to __accept3 never can be '\0'. */
while (*__s != '\0' && *__s != __accept1 && *__s != __accept2
&& *__s != __accept3)
++__s;
return *__s == '\0' ? NULL : (char *) (size_t) __s;
}
#endif
/* Find the first occurrence of NEEDLE in HAYSTACK. Newer gcc versions
do this itself. */
#if !defined _HAVE_STRING_ARCH_strstr && !__GNUC_PREREQ (2, 97)
# define strstr(haystack, needle) \
(__extension__ (__builtin_constant_p (needle) && __string2_1bptr_p (needle) \
? (((const char *) (needle))[0] == '\0' \
? (char *) (size_t) (haystack) \
: (((const char *) (needle))[1] == '\0' \
? strchr (haystack, \
((const char *) (needle))[0]) \
: strstr (haystack, needle))) \
: strstr (haystack, needle)))
#endif
#if !defined _HAVE_STRING_ARCH_strtok_r || defined _FORCE_INLINES
# ifndef _HAVE_STRING_ARCH_strtok_r
# define __strtok_r(s, sep, nextp) \
(__extension__ (__builtin_constant_p (sep) && __string2_1bptr_p (sep) \
&& ((const char *) (sep))[0] != '\0' \
&& ((const char *) (sep))[1] == '\0' \
? __strtok_r_1c (s, ((const char *) (sep))[0], nextp) \
: __strtok_r (s, sep, nextp)))
# endif
__STRING_INLINE char *__strtok_r_1c (char *__s, char __sep, char **__nextp);
__STRING_INLINE char *
__strtok_r_1c (char *__s, char __sep, char **__nextp)
{
char *__result;
if (__s == NULL)
__s = *__nextp;
while (*__s == __sep)
++__s;
__result = NULL;
if (*__s != '\0')
{
__result = __s++;
while (*__s != '\0')
if (*__s++ == __sep)
{
__s[-1] = '\0';
break;
}
}
*__nextp = __s;
return __result;
}
# ifdef __USE_POSIX
# define strtok_r(s, sep, nextp) __strtok_r (s, sep, nextp)
# endif
#endif
#if !defined _HAVE_STRING_ARCH_strsep || defined _FORCE_INLINES
# ifndef _HAVE_STRING_ARCH_strsep
extern char *__strsep_g (char **__stringp, const char *__delim);
# define __strsep(s, reject) \
__extension__ \
({ char __r0, __r1, __r2; \
(__builtin_constant_p (reject) && __string2_1bptr_p (reject) \
&& (__r0 = ((const char *) (reject))[0], \
((const char *) (reject))[0] != '\0') \
? ((__r1 = ((const char *) (reject))[1], \
((const char *) (reject))[1] == '\0') \
? __strsep_1c (s, __r0) \
: ((__r2 = ((const char *) (reject))[2], __r2 == '\0') \
? __strsep_2c (s, __r0, __r1) \
: (((const char *) (reject))[3] == '\0' \
? __strsep_3c (s, __r0, __r1, __r2) \
: __strsep_g (s, reject)))) \
: __strsep_g (s, reject)); })
# endif
__STRING_INLINE char *__strsep_1c (char **__s, char __reject);
__STRING_INLINE char *
__strsep_1c (char **__s, char __reject)
{
char *__retval = *__s;
if (__retval != NULL && (*__s = strchr (__retval, __reject)) != NULL)
*(*__s)++ = '\0';
return __retval;
}
__STRING_INLINE char *__strsep_2c (char **__s, char __reject1, char __reject2);
__STRING_INLINE char *
__strsep_2c (char **__s, char __reject1, char __reject2)
{
char *__retval = *__s;
if (__retval != NULL)
{
char *__cp = __retval;
while (1)
{
if (*__cp == '\0')
{
__cp = NULL;
break;
}
if (*__cp == __reject1 || *__cp == __reject2)
{
*__cp++ = '\0';
break;
}
++__cp;
}
*__s = __cp;
}
return __retval;
}
__STRING_INLINE char *__strsep_3c (char **__s, char __reject1, char __reject2,
char __reject3);
__STRING_INLINE char *
__strsep_3c (char **__s, char __reject1, char __reject2, char __reject3)
{
char *__retval = *__s;
if (__retval != NULL)
{
char *__cp = __retval;
while (1)
{
if (*__cp == '\0')
{
__cp = NULL;
break;
}
if (*__cp == __reject1 || *__cp == __reject2 || *__cp == __reject3)
{
*__cp++ = '\0';
break;
}
++__cp;
}
*__s = __cp;
}
return __retval;
}
# ifdef __USE_MISC
# define strsep(s, reject) __strsep (s, reject)
# endif
#endif
/* We need the memory allocation functions for inline strdup().
Referring to stdlib.h (even minimally) is not allowed
in any of the tight standards compliant modes. */
#ifdef __USE_MISC
# if !defined _HAVE_STRING_ARCH_strdup || !defined _HAVE_STRING_ARCH_strndup
# define __need_malloc_and_calloc
# include <stdlib.h>
# endif
# ifndef _HAVE_STRING_ARCH_strdup
extern char *__strdup (const char *__string) __THROW __attribute_malloc__;
# define __strdup(s) \
(__extension__ (__builtin_constant_p (s) && __string2_1bptr_p (s) \
? (((const char *) (s))[0] == '\0' \
? (char *) calloc ((size_t) 1, (size_t) 1) \
: ({ size_t __len = strlen (s) + 1; \
char *__retval = (char *) malloc (__len); \
if (__retval != NULL) \
__retval = (char *) memcpy (__retval, s, __len); \
__retval; })) \
: __strdup (s)))
# if defined __USE_XOPEN_EXTENDED || defined __USE_XOPEN2K8
# define strdup(s) __strdup (s)
# endif
# endif
# ifndef _HAVE_STRING_ARCH_strndup
extern char *__strndup (const char *__string, size_t __n)
__THROW __attribute_malloc__;
# define __strndup(s, n) \
(__extension__ (__builtin_constant_p (s) && __string2_1bptr_p (s) \
? (((const char *) (s))[0] == '\0' \
? (char *) calloc ((size_t) 1, (size_t) 1) \
: ({ size_t __len = strlen (s) + 1; \
size_t __n = (n); \
char *__retval; \
if (__n < __len) \
__len = __n + 1; \
__retval = (char *) malloc (__len); \
if (__retval != NULL) \
{ \
__retval[__len - 1] = '\0'; \
__retval = (char *) memcpy (__retval, s, \
__len - 1); \
} \
__retval; })) \
: __strndup (s, n)))
# ifdef __USE_XOPEN2K8
# define strndup(s, n) __strndup (s, n)
# endif
# endif
#endif /* Use misc. or use GNU. */
#ifndef _FORCE_INLINES
# undef __STRING_INLINE
#endif
#endif /* No string inlines. */
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