Merge GDB 7.5.1

gdb/gnulib/import/string.in.h

 /* A GNU-like <string.h>.
 
-   Copyright (C) 1995-1996, 2001-2011 Free Software Foundation, Inc.
+   Copyright (C) 1995-1996, 2001-2012 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 3, or (at your option)
    any later version.
 
    This program 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 General Public License for more details.
 
    You should have received a copy of the GNU General Public License
-   along with this program; if not, write to the Free Software Foundation,
-   Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
+   along with this program; if not, see <http://www.gnu.org/licenses/>.  */
 
-#ifndef _GL_STRING_H
+#ifndef _@GUARD_PREFIX@_STRING_H
 
 #if __GNUC__ >= 3
 @PRAGMA_SYSTEM_HEADER@
 #endif
+@PRAGMA_COLUMNS@
 
 /* The include_next requires a split double-inclusion guard.  */
 #@INCLUDE_NEXT@ @NEXT_STRING_H@
 
-#ifndef _GL_STRING_H
-#define _GL_STRING_H
+#ifndef _@GUARD_PREFIX@_STRING_H
+#define _@GUARD_PREFIX@_STRING_H
 
 /* NetBSD 5.0 mis-defines NULL.  */
 #include <stddef.h>
 
 /* MirBSD defines mbslen as a macro.  */
 #if @GNULIB_MBSLEN@ && defined __MirBSD__
 # include <wchar.h>
 #endif
 
-#ifndef __attribute__
-/* This feature is available in gcc versions 2.5 and later.  */
-# if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 5)
-#  define __attribute__(Spec) /* empty */
-# endif
-/* The attribute __pure__ was added in gcc 2.96.  */
-# if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 96)
-#  define __pure__ /* empty */
-# endif
+/* The __attribute__ feature is available in gcc versions 2.5 and later.
+   The attribute __pure__ was added in gcc 2.96.  */
+#if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 96)
+# define _GL_ATTRIBUTE_PURE __attribute__ ((__pure__))
+#else
+# define _GL_ATTRIBUTE_PURE /* empty */
 #endif
 
+/* NetBSD 5.0 declares strsignal in <unistd.h>, not in <string.h>.  */
+/* But in any case avoid namespace pollution on glibc systems.  */
+#if (@GNULIB_STRSIGNAL@ || defined GNULIB_POSIXCHECK) && defined __NetBSD__ \
+    && ! defined __GLIBC__
+# include <unistd.h>
+#endif
 
 /* The definitions of _GL_FUNCDECL_RPL etc. are copied here.  */
 
 /* The definition of _GL_ARG_NONNULL is copied here.  */
 
 /* The definition of _GL_WARN_ON_USE is copied here.  */
 
 
+/* Find the index of the least-significant set bit.  */
+#if @GNULIB_FFSL@
+# if !@HAVE_FFSL@
+_GL_FUNCDECL_SYS (ffsl, int, (long int i));
+# endif
+_GL_CXXALIAS_SYS (ffsl, int, (long int i));
+_GL_CXXALIASWARN (ffsl);
+#elif defined GNULIB_POSIXCHECK
+# undef ffsl
+# if HAVE_RAW_DECL_FFSL
+_GL_WARN_ON_USE (ffsl, "ffsl is not portable - use the ffsl module");
+# endif
+#endif
+
+
+/* Find the index of the least-significant set bit.  */
+#if @GNULIB_FFSLL@
+# if !@HAVE_FFSLL@
+_GL_FUNCDECL_SYS (ffsll, int, (long long int i));
+# endif
+_GL_CXXALIAS_SYS (ffsll, int, (long long int i));
+_GL_CXXALIASWARN (ffsll);
+#elif defined GNULIB_POSIXCHECK
+# undef ffsll
+# if HAVE_RAW_DECL_FFSLL
+_GL_WARN_ON_USE (ffsll, "ffsll is not portable - use the ffsll module");
+# endif
+#endif
+
+
 /* Return the first instance of C within N bytes of S, or NULL.  */
 #if @GNULIB_MEMCHR@
 # if @REPLACE_MEMCHR@
 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 #   define memchr rpl_memchr
 #  endif
 _GL_FUNCDECL_RPL (memchr, void *, (void const *__s, int __c, size_t __n)
-                                  __attribute__ ((__pure__))
+                                  _GL_ATTRIBUTE_PURE
                                   _GL_ARG_NONNULL ((1)));
 _GL_CXXALIAS_RPL (memchr, void *, (void const *__s, int __c, size_t __n));
 # else
 #  if ! @HAVE_MEMCHR@
 _GL_FUNCDECL_SYS (memchr, void *, (void const *__s, int __c, size_t __n)
-                                  __attribute__ ((__pure__))
+                                  _GL_ATTRIBUTE_PURE
                                   _GL_ARG_NONNULL ((1)));
 #  endif
   /* On some systems, this function is defined as an overloaded function:
        extern "C" { const void * std::memchr (const void *, int, size_t); }
        extern "C++" { void * std::memchr (void *, int, size_t); }  */
 _GL_CXXALIAS_SYS_CAST2 (memchr,
                         void *, (void const *__s, int __c, size_t __n),
                         void const *, (void const *__s, int __c, size_t __n));
 # endif
-# if __GLIBC__ == 2 && __GLIBC_MINOR__ >= 10 \
+# if ((__GLIBC__ == 2 && __GLIBC_MINOR__ >= 10) && !defined __UCLIBC__) \
      && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4))
 _GL_CXXALIASWARN1 (memchr, void *, (void *__s, int __c, size_t __n));
 _GL_CXXALIASWARN1 (memchr, void const *,
                    (void const *__s, int __c, size_t __n));
 # else
 _GL_CXXALIASWARN (memchr);
 # endif
 #elif defined GNULIB_POSIXCHECK
 # undef memchr
 /* Assume memchr is always declared.  */
 _GL_WARN_ON_USE (memchr, "memchr has platform-specific bugs - "
                  "use gnulib module memchr for portability" );
 #endif
 
 /* Return the first occurrence of NEEDLE in HAYSTACK.  */
 #if @GNULIB_MEMMEM@
 # if @REPLACE_MEMMEM@
 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 #   define memmem rpl_memmem
 #  endif
 _GL_FUNCDECL_RPL (memmem, void *,
                   (void const *__haystack, size_t __haystack_len,
                    void const *__needle, size_t __needle_len)
-                  __attribute__ ((__pure__)) _GL_ARG_NONNULL ((1, 3)));
+                  _GL_ATTRIBUTE_PURE
+                  _GL_ARG_NONNULL ((1, 3)));
 _GL_CXXALIAS_RPL (memmem, void *,
                   (void const *__haystack, size_t __haystack_len,
                    void const *__needle, size_t __needle_len));
 # else
 #  if ! @HAVE_DECL_MEMMEM@
 _GL_FUNCDECL_SYS (memmem, void *,
                   (void const *__haystack, size_t __haystack_len,
                    void const *__needle, size_t __needle_len)
-                  __attribute__ ((__pure__)) _GL_ARG_NONNULL ((1, 3)));
+                  _GL_ATTRIBUTE_PURE
+                  _GL_ARG_NONNULL ((1, 3)));
 #  endif
 _GL_CXXALIAS_SYS (memmem, void *,
                   (void const *__haystack, size_t __haystack_len,
                    void const *__needle, size_t __needle_len));
 # endif
 _GL_CXXALIASWARN (memmem);
 #elif defined GNULIB_POSIXCHECK
 # undef memmem
 # if HAVE_RAW_DECL_MEMMEM
 _GL_WARN_ON_USE (memmem, "memmem is unportable and often quadratic - "
@@ skipping 20 matching lines @@
 # if HAVE_RAW_DECL_MEMPCPY
 _GL_WARN_ON_USE (mempcpy, "mempcpy is unportable - "
                  "use gnulib module mempcpy for portability");
 # endif
 #endif
 
 /* Search backwards through a block for a byte (specified as an int).  */
 #if @GNULIB_MEMRCHR@
 # if ! @HAVE_DECL_MEMRCHR@
 _GL_FUNCDECL_SYS (memrchr, void *, (void const *, int, size_t)
-                                   __attribute__ ((__pure__))
+                                   _GL_ATTRIBUTE_PURE
                                    _GL_ARG_NONNULL ((1)));
 # endif
   /* On some systems, this function is defined as an overloaded function:
        extern "C++" { const void * std::memrchr (const void *, int, size_t); }
        extern "C++" { void * std::memrchr (void *, int, size_t); }  */
 _GL_CXXALIAS_SYS_CAST2 (memrchr,
                         void *, (void const *, int, size_t),
                         void const *, (void const *, int, size_t));
-# if __GLIBC__ == 2 && __GLIBC_MINOR__ >= 10 \
+# if ((__GLIBC__ == 2 && __GLIBC_MINOR__ >= 10) && !defined __UCLIBC__) \
      && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4))
 _GL_CXXALIASWARN1 (memrchr, void *, (void *, int, size_t));
 _GL_CXXALIASWARN1 (memrchr, void const *, (void const *, int, size_t));
 # else
 _GL_CXXALIASWARN (memrchr);
 # endif
 #elif defined GNULIB_POSIXCHECK
 # undef memrchr
 # if HAVE_RAW_DECL_MEMRCHR
 _GL_WARN_ON_USE (memrchr, "memrchr is unportable - "
                  "use gnulib module memrchr for portability");
 # endif
 #endif
 
 /* Find the first occurrence of C in S.  More efficient than
    memchr(S,C,N), at the expense of undefined behavior if C does not
    occur within N bytes.  */
 #if @GNULIB_RAWMEMCHR@
 # if ! @HAVE_RAWMEMCHR@
 _GL_FUNCDECL_SYS (rawmemchr, void *, (void const *__s, int __c_in)
-                                     __attribute__ ((__pure__))
+                                     _GL_ATTRIBUTE_PURE
                                      _GL_ARG_NONNULL ((1)));
 # endif
   /* On some systems, this function is defined as an overloaded function:
        extern "C++" { const void * std::rawmemchr (const void *, int); }
        extern "C++" { void * std::rawmemchr (void *, int); }  */
 _GL_CXXALIAS_SYS_CAST2 (rawmemchr,
                         void *, (void const *__s, int __c_in),
                         void const *, (void const *__s, int __c_in));
-# if __GLIBC__ == 2 && __GLIBC_MINOR__ >= 10 \
+# if ((__GLIBC__ == 2 && __GLIBC_MINOR__ >= 10) && !defined __UCLIBC__) \
      && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4))
 _GL_CXXALIASWARN1 (rawmemchr, void *, (void *__s, int __c_in));
 _GL_CXXALIASWARN1 (rawmemchr, void const *, (void const *__s, int __c_in));
 # else
 _GL_CXXALIASWARN (rawmemchr);
 # endif
 #elif defined GNULIB_POSIXCHECK
 # undef rawmemchr
 # if HAVE_RAW_DECL_RAWMEMCHR
 _GL_WARN_ON_USE (rawmemchr, "rawmemchr is unportable - "
@@ skipping 17 matching lines @@
 _GL_WARN_ON_USE (stpcpy, "stpcpy is unportable - "
                  "use gnulib module stpcpy for portability");
 # endif
 #endif
 
 /* Copy no more than N bytes of SRC to DST, returning a pointer past the
    last non-NUL byte written into DST.  */
 #if @GNULIB_STPNCPY@
 # if @REPLACE_STPNCPY@
 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef stpncpy
 #   define stpncpy rpl_stpncpy
 #  endif
 _GL_FUNCDECL_RPL (stpncpy, char *,
                   (char *restrict __dst, char const *restrict __src,
                    size_t __n)
                   _GL_ARG_NONNULL ((1, 2)));
 _GL_CXXALIAS_RPL (stpncpy, char *,
                   (char *restrict __dst, char const *restrict __src,
                    size_t __n));
 # else
@@ skipping 21 matching lines @@
    GB18030 and the character to be searched is a digit.  */
 # undef strchr
 /* Assume strchr is always declared.  */
 _GL_WARN_ON_USE (strchr, "strchr cannot work correctly on character strings "
                  "in some multibyte locales - "
                  "use mbschr if you care about internationalization");
 #endif
 
 /* Find the first occurrence of C in S or the final NUL byte.  */
 #if @GNULIB_STRCHRNUL@
-# if ! @HAVE_STRCHRNUL@
+# if @REPLACE_STRCHRNUL@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   define strchrnul rpl_strchrnul
+#  endif
+_GL_FUNCDECL_RPL (strchrnul, char *, (const char *__s, int __c_in)
+                                     _GL_ATTRIBUTE_PURE
+                                     _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (strchrnul, char *,
+                  (const char *str, int ch));
+# else
+#  if ! @HAVE_STRCHRNUL@
 _GL_FUNCDECL_SYS (strchrnul, char *, (char const *__s, int __c_in)
-                                     __attribute__ ((__pure__))
+                                     _GL_ATTRIBUTE_PURE
                                      _GL_ARG_NONNULL ((1)));
-# endif
+#  endif
   /* On some systems, this function is defined as an overloaded function:
        extern "C++" { const char * std::strchrnul (const char *, int); }
        extern "C++" { char * std::strchrnul (char *, int); }  */
 _GL_CXXALIAS_SYS_CAST2 (strchrnul,
                         char *, (char const *__s, int __c_in),
                         char const *, (char const *__s, int __c_in));
-# if __GLIBC__ == 2 && __GLIBC_MINOR__ >= 10 \
+# endif
+# if ((__GLIBC__ == 2 && __GLIBC_MINOR__ >= 10) && !defined __UCLIBC__) \
      && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4))
 _GL_CXXALIASWARN1 (strchrnul, char *, (char *__s, int __c_in));
 _GL_CXXALIASWARN1 (strchrnul, char const *, (char const *__s, int __c_in));
 # else
 _GL_CXXALIASWARN (strchrnul);
 # endif
 #elif defined GNULIB_POSIXCHECK
 # undef strchrnul
 # if HAVE_RAW_DECL_STRCHRNUL
 _GL_WARN_ON_USE (strchrnul, "strchrnul is unportable - "
                  "use gnulib module strchrnul for portability");
 # endif
 #endif
 
 /* Duplicate S, returning an identical malloc'd string.  */
 #if @GNULIB_STRDUP@
 # if @REPLACE_STRDUP@
 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 #   undef strdup
 #   define strdup rpl_strdup
 #  endif
 _GL_FUNCDECL_RPL (strdup, char *, (char const *__s) _GL_ARG_NONNULL ((1)));
 _GL_CXXALIAS_RPL (strdup, char *, (char const *__s));
 # else
+#  if defined __cplusplus && defined GNULIB_NAMESPACE && defined strdup
+    /* strdup exists as a function and as a macro.  Get rid of the macro.  */
+#   undef strdup
+#  endif
 #  if !(@HAVE_DECL_STRDUP@ || defined strdup)
 _GL_FUNCDECL_SYS (strdup, char *, (char const *__s) _GL_ARG_NONNULL ((1)));
 #  endif
 _GL_CXXALIAS_SYS (strdup, char *, (char const *__s));
 # endif
 _GL_CXXALIASWARN (strdup);
 #elif defined GNULIB_POSIXCHECK
 # undef strdup
 # if HAVE_RAW_DECL_STRDUP
 _GL_WARN_ON_USE (strdup, "strdup is unportable - "
@@ skipping 52 matching lines @@
 /* Find the length (number of bytes) of STRING, but scan at most
    MAXLEN bytes.  If no '\0' terminator is found in that many bytes,
    return MAXLEN.  */
 #if @GNULIB_STRNLEN@
 # if @REPLACE_STRNLEN@
 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 #   undef strnlen
 #   define strnlen rpl_strnlen
 #  endif
 _GL_FUNCDECL_RPL (strnlen, size_t, (char const *__string, size_t __maxlen)
-                                   __attribute__ ((__pure__))
+                                   _GL_ATTRIBUTE_PURE
                                    _GL_ARG_NONNULL ((1)));
 _GL_CXXALIAS_RPL (strnlen, size_t, (char const *__string, size_t __maxlen));
 # else
 #  if ! @HAVE_DECL_STRNLEN@
 _GL_FUNCDECL_SYS (strnlen, size_t, (char const *__string, size_t __maxlen)
-                                   __attribute__ ((__pure__))
+                                   _GL_ATTRIBUTE_PURE
                                    _GL_ARG_NONNULL ((1)));
 #  endif
 _GL_CXXALIAS_SYS (strnlen, size_t, (char const *__string, size_t __maxlen));
 # endif
 _GL_CXXALIASWARN (strnlen);
 #elif defined GNULIB_POSIXCHECK
 # undef strnlen
 # if HAVE_RAW_DECL_STRNLEN
 _GL_WARN_ON_USE (strnlen, "strnlen is unportable - "
                  "use gnulib module strnlen for portability");
 # endif
 #endif
 
 #if defined GNULIB_POSIXCHECK
 /* strcspn() assumes the second argument is a list of single-byte characters.
    Even in this simple case, it does not work with multibyte strings if the
    locale encoding is GB18030 and one of the characters to be searched is a
    digit.  */
 # undef strcspn
 /* Assume strcspn is always declared.  */
 _GL_WARN_ON_USE (strcspn, "strcspn cannot work correctly on character strings "
                  "in multibyte locales - "
                  "use mbscspn if you care about internationalization");
 #endif
 
 /* Find the first occurrence in S of any character in ACCEPT.  */
 #if @GNULIB_STRPBRK@
 # if ! @HAVE_STRPBRK@
 _GL_FUNCDECL_SYS (strpbrk, char *, (char const *__s, char const *__accept)
-                                   __attribute__ ((__pure__))
+                                   _GL_ATTRIBUTE_PURE
                                    _GL_ARG_NONNULL ((1, 2)));
 # endif
   /* On some systems, this function is defined as an overloaded function:
        extern "C" { const char * strpbrk (const char *, const char *); }
        extern "C++" { char * strpbrk (char *, const char *); }  */
 _GL_CXXALIAS_SYS_CAST2 (strpbrk,
                         char *, (char const *__s, char const *__accept),
                         const char *, (char const *__s, char const *__accept));
-# if __GLIBC__ == 2 && __GLIBC_MINOR__ >= 10 \
+# if ((__GLIBC__ == 2 && __GLIBC_MINOR__ >= 10) && !defined __UCLIBC__) \
      && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4))
 _GL_CXXALIASWARN1 (strpbrk, char *, (char *__s, char const *__accept));
 _GL_CXXALIASWARN1 (strpbrk, char const *,
                    (char const *__s, char const *__accept));
 # else
 _GL_CXXALIASWARN (strpbrk);
 # endif
 # if defined GNULIB_POSIXCHECK
 /* strpbrk() assumes the second argument is a list of single-byte characters.
    Even in this simple case, it does not work with multibyte strings if the
@@ skipping 70 matching lines @@
                  "use gnulib module strsep for portability");
 # endif
 #endif
 
 #if @GNULIB_STRSTR@
 # if @REPLACE_STRSTR@
 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 #   define strstr rpl_strstr
 #  endif
 _GL_FUNCDECL_RPL (strstr, char *, (const char *haystack, const char *needle)
-                                  __attribute__ ((__pure__))
+                                  _GL_ATTRIBUTE_PURE
                                   _GL_ARG_NONNULL ((1, 2)));
 _GL_CXXALIAS_RPL (strstr, char *, (const char *haystack, const char *needle));
 # else
   /* On some systems, this function is defined as an overloaded function:
        extern "C++" { const char * strstr (const char *, const char *); }
        extern "C++" { char * strstr (char *, const char *); }  */
 _GL_CXXALIAS_SYS_CAST2 (strstr,
                         char *, (const char *haystack, const char *needle),
                         const char *, (const char *haystack, const char *needle));
 # endif
-# if __GLIBC__ == 2 && __GLIBC_MINOR__ >= 10 \
+# if ((__GLIBC__ == 2 && __GLIBC_MINOR__ >= 10) && !defined __UCLIBC__) \
      && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4))
 _GL_CXXALIASWARN1 (strstr, char *, (char *haystack, const char *needle));
 _GL_CXXALIASWARN1 (strstr, const char *,
                    (const char *haystack, const char *needle));
 # else
 _GL_CXXALIASWARN (strstr);
 # endif
 #elif defined GNULIB_POSIXCHECK
 /* strstr() does not work with multibyte strings if the locale encoding is
    different from UTF-8:
@@ skipping 10 matching lines @@
 
 /* Find the first occurrence of NEEDLE in HAYSTACK, using case-insensitive
    comparison.  */
 #if @GNULIB_STRCASESTR@
 # if @REPLACE_STRCASESTR@
 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 #   define strcasestr rpl_strcasestr
 #  endif
 _GL_FUNCDECL_RPL (strcasestr, char *,
                   (const char *haystack, const char *needle)
-                  __attribute__ ((__pure__)) _GL_ARG_NONNULL ((1, 2)));
+                  _GL_ATTRIBUTE_PURE
+                  _GL_ARG_NONNULL ((1, 2)));
 _GL_CXXALIAS_RPL (strcasestr, char *,
                   (const char *haystack, const char *needle));
 # else
 #  if ! @HAVE_STRCASESTR@
 _GL_FUNCDECL_SYS (strcasestr, char *,
                   (const char *haystack, const char *needle)
-                  __attribute__ ((__pure__)) _GL_ARG_NONNULL ((1, 2)));
+                  _GL_ATTRIBUTE_PURE
+                  _GL_ARG_NONNULL ((1, 2)));
 #  endif
   /* On some systems, this function is defined as an overloaded function:
        extern "C++" { const char * strcasestr (const char *, const char *); }
        extern "C++" { char * strcasestr (char *, const char *); }  */
 _GL_CXXALIAS_SYS_CAST2 (strcasestr,
                         char *, (const char *haystack, const char *needle),
                         const char *, (const char *haystack, const char *needle));
 # endif
-# if __GLIBC__ == 2 && __GLIBC_MINOR__ >= 10 \
+# if ((__GLIBC__ == 2 && __GLIBC_MINOR__ >= 10) && !defined __UCLIBC__) \
      && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4))
 _GL_CXXALIASWARN1 (strcasestr, char *, (char *haystack, const char *needle));
 _GL_CXXALIASWARN1 (strcasestr, const char *,
                    (const char *haystack, const char *needle));
 # else
 _GL_CXXALIASWARN (strcasestr);
 # endif
 #elif defined GNULIB_POSIXCHECK
 /* strcasestr() does not work with multibyte strings:
    It is a glibc extension, and glibc implements it only for unibyte
@@ skipping 78 matching lines @@
 #if @GNULIB_MBSLEN@
 /* Return the number of multibyte characters in the character string STRING.
    This considers multibyte characters, unlike strlen, which counts bytes.  */
 # ifdef __MirBSD__  /* MirBSD defines mbslen as a macro.  Override it.  */
 #  undef mbslen
 # endif
 # if @HAVE_MBSLEN@  /* AIX, OSF/1, MirBSD define mbslen already in libc.  */
 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 #   define mbslen rpl_mbslen
 #  endif
-_GL_FUNCDECL_RPL (mbslen, size_t, (const char *string) _GL_ARG_NONNULL ((1)));
+_GL_FUNCDECL_RPL (mbslen, size_t, (const char *string)
+                                  _GL_ATTRIBUTE_PURE
+                                  _GL_ARG_NONNULL ((1)));
 _GL_CXXALIAS_RPL (mbslen, size_t, (const char *string));
 # else
-_GL_FUNCDECL_SYS (mbslen, size_t, (const char *string) _GL_ARG_NONNULL ((1)));
+_GL_FUNCDECL_SYS (mbslen, size_t, (const char *string)
+                                  _GL_ATTRIBUTE_PURE
+                                  _GL_ARG_NONNULL ((1)));
 _GL_CXXALIAS_SYS (mbslen, size_t, (const char *string));
 # endif
 _GL_CXXALIASWARN (mbslen);
 #endif
 
 #if @GNULIB_MBSNLEN@
 /* Return the number of multibyte characters in the character string starting
    at STRING and ending at STRING + LEN.  */
 _GL_EXTERN_C size_t mbsnlen (const char *string, size_t len)
+     _GL_ATTRIBUTE_PURE
      _GL_ARG_NONNULL ((1));
 #endif
 
 #if @GNULIB_MBSCHR@
 /* Locate the first single-byte character C in the character string STRING,
    and return a pointer to it.  Return NULL if C is not found in STRING.
    Unlike strchr(), this function works correctly in multibyte locales with
    encodings such as GB18030.  */
 # if defined __hpux
 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 #   define mbschr rpl_mbschr /* avoid collision with HP-UX function */
 #  endif
 _GL_FUNCDECL_RPL (mbschr, char *, (const char *string, int c)
+                                  _GL_ATTRIBUTE_PURE
                                   _GL_ARG_NONNULL ((1)));
 _GL_CXXALIAS_RPL (mbschr, char *, (const char *string, int c));
 # else
 _GL_FUNCDECL_SYS (mbschr, char *, (const char *string, int c)
+                                  _GL_ATTRIBUTE_PURE
                                   _GL_ARG_NONNULL ((1)));
 _GL_CXXALIAS_SYS (mbschr, char *, (const char *string, int c));
 # endif
 _GL_CXXALIASWARN (mbschr);
 #endif
 
 #if @GNULIB_MBSRCHR@
 /* Locate the last single-byte character C in the character string STRING,
    and return a pointer to it.  Return NULL if C is not found in STRING.
    Unlike strrchr(), this function works correctly in multibyte locales with
    encodings such as GB18030.  */
-# if defined __hpux
+# if defined __hpux || defined __INTERIX
 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
-#   define mbsrchr rpl_mbsrchr /* avoid collision with HP-UX function */
+#   define mbsrchr rpl_mbsrchr /* avoid collision with system function */
 #  endif
 _GL_FUNCDECL_RPL (mbsrchr, char *, (const char *string, int c)
+                                   _GL_ATTRIBUTE_PURE
                                    _GL_ARG_NONNULL ((1)));
 _GL_CXXALIAS_RPL (mbsrchr, char *, (const char *string, int c));
 # else
 _GL_FUNCDECL_SYS (mbsrchr, char *, (const char *string, int c)
+                                   _GL_ATTRIBUTE_PURE
                                    _GL_ARG_NONNULL ((1)));
 _GL_CXXALIAS_SYS (mbsrchr, char *, (const char *string, int c));
 # endif
 _GL_CXXALIASWARN (mbsrchr);
 #endif
 
 #if @GNULIB_MBSSTR@
 /* Find the first occurrence of the character string NEEDLE in the character
    string HAYSTACK.  Return NULL if NEEDLE is not found in HAYSTACK.
    Unlike strstr(), this function works correctly in multibyte locales with
    encodings different from UTF-8.  */
 _GL_EXTERN_C char * mbsstr (const char *haystack, const char *needle)
+     _GL_ATTRIBUTE_PURE
      _GL_ARG_NONNULL ((1, 2));
 #endif
 
 #if @GNULIB_MBSCASECMP@
 /* Compare the character strings S1 and S2, ignoring case, returning less than,
    equal to or greater than zero if S1 is lexicographically less than, equal to
    or greater than S2.
    Note: This function may, in multibyte locales, return 0 for strings of
    different lengths!
    Unlike strcasecmp(), this function works correctly in multibyte locales.  */
 _GL_EXTERN_C int mbscasecmp (const char *s1, const char *s2)
+     _GL_ATTRIBUTE_PURE
      _GL_ARG_NONNULL ((1, 2));
 #endif
 
 #if @GNULIB_MBSNCASECMP@
 /* Compare the initial segment of the character string S1 consisting of at most
    N characters with the initial segment of the character string S2 consisting
    of at most N characters, ignoring case, returning less than, equal to or
    greater than zero if the initial segment of S1 is lexicographically less
    than, equal to or greater than the initial segment of S2.
    Note: This function may, in multibyte locales, return 0 for initial segments
    of different lengths!
    Unlike strncasecmp(), this function works correctly in multibyte locales.
    But beware that N is not a byte count but a character count!  */
 _GL_EXTERN_C int mbsncasecmp (const char *s1, const char *s2, size_t n)
+     _GL_ATTRIBUTE_PURE
      _GL_ARG_NONNULL ((1, 2));
 #endif
 
 #if @GNULIB_MBSPCASECMP@
 /* Compare the initial segment of the character string STRING consisting of
    at most mbslen (PREFIX) characters with the character string PREFIX,
-   ignoring case, returning less than, equal to or greater than zero if this
-   initial segment is lexicographically less than, equal to or greater than
-   PREFIX.
-   Note: This function may, in multibyte locales, return 0 if STRING is of
-   smaller length than PREFIX!
+   ignoring case.  If the two match, return a pointer to the first byte
+   after this prefix in STRING.  Otherwise, return NULL.
+   Note: This function may, in multibyte locales, return non-NULL if STRING
+   is of smaller length than PREFIX!
    Unlike strncasecmp(), this function works correctly in multibyte
    locales.  */
 _GL_EXTERN_C char * mbspcasecmp (const char *string, const char *prefix)
+     _GL_ATTRIBUTE_PURE
      _GL_ARG_NONNULL ((1, 2));
 #endif
 
 #if @GNULIB_MBSCASESTR@
 /* Find the first occurrence of the character string NEEDLE in the character
    string HAYSTACK, using case-insensitive comparison.
    Note: This function may, in multibyte locales, return success even if
    strlen (haystack) < strlen (needle) !
    Unlike strcasestr(), this function works correctly in multibyte locales.  */
 _GL_EXTERN_C char * mbscasestr (const char *haystack, const char *needle)
+     _GL_ATTRIBUTE_PURE
      _GL_ARG_NONNULL ((1, 2));
 #endif
 
 #if @GNULIB_MBSCSPN@
 /* Find the first occurrence in the character string STRING of any character
    in the character string ACCEPT.  Return the number of bytes from the
    beginning of the string to this occurrence, or to the end of the string
    if none exists.
    Unlike strcspn(), this function works correctly in multibyte locales.  */
 _GL_EXTERN_C size_t mbscspn (const char *string, const char *accept)
+     _GL_ATTRIBUTE_PURE
      _GL_ARG_NONNULL ((1, 2));
 #endif
 
 #if @GNULIB_MBSPBRK@
 /* Find the first occurrence in the character string STRING of any character
    in the character string ACCEPT.  Return the pointer to it, or NULL if none
    exists.
    Unlike strpbrk(), this function works correctly in multibyte locales.  */
 # if defined __hpux
 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 #   define mbspbrk rpl_mbspbrk /* avoid collision with HP-UX function */
 #  endif
 _GL_FUNCDECL_RPL (mbspbrk, char *, (const char *string, const char *accept)
+                                   _GL_ATTRIBUTE_PURE
                                    _GL_ARG_NONNULL ((1, 2)));
 _GL_CXXALIAS_RPL (mbspbrk, char *, (const char *string, const char *accept));
 # else
 _GL_FUNCDECL_SYS (mbspbrk, char *, (const char *string, const char *accept)
+                                   _GL_ATTRIBUTE_PURE
                                    _GL_ARG_NONNULL ((1, 2)));
 _GL_CXXALIAS_SYS (mbspbrk, char *, (const char *string, const char *accept));
 # endif
 _GL_CXXALIASWARN (mbspbrk);
 #endif
 
 #if @GNULIB_MBSSPN@
 /* Find the first occurrence in the character string STRING of any character
    not in the character string REJECT.  Return the number of bytes from the
    beginning of the string to this occurrence, or to the end of the string
    if none exists.
    Unlike strspn(), this function works correctly in multibyte locales.  */
 _GL_EXTERN_C size_t mbsspn (const char *string, const char *reject)
+     _GL_ATTRIBUTE_PURE
      _GL_ARG_NONNULL ((1, 2));
 #endif
 
 #if @GNULIB_MBSSEP@
 /* Search the next delimiter (multibyte character listed in the character
    string DELIM) starting at the character string *STRINGP.
    If one is found, overwrite it with a NUL, and advance *STRINGP to point
    to the next multibyte character after it.  Otherwise, set *STRINGP to NULL.
    If *STRINGP was already NULL, nothing happens.
    Return the old value of *STRINGP.
@@ skipping 43 matching lines @@
 _GL_CXXALIAS_SYS (strerror, char *, (int));
 # endif
 _GL_CXXALIASWARN (strerror);
 #elif defined GNULIB_POSIXCHECK
 # undef strerror
 /* Assume strerror is always declared.  */
 _GL_WARN_ON_USE (strerror, "strerror is unportable - "
                  "use gnulib module strerror to guarantee non-NULL result");
 #endif
 
+/* Map any int, typically from errno, into an error message.  Multithread-safe.
+   Uses the POSIX declaration, not the glibc declaration.  */
+#if @GNULIB_STRERROR_R@
+# if @REPLACE_STRERROR_R@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef strerror_r
+#   define strerror_r rpl_strerror_r
+#  endif
+_GL_FUNCDECL_RPL (strerror_r, int, (int errnum, char *buf, size_t buflen)
+                                   _GL_ARG_NONNULL ((2)));
+_GL_CXXALIAS_RPL (strerror_r, int, (int errnum, char *buf, size_t buflen));
+# else
+#  if !@HAVE_DECL_STRERROR_R@
+_GL_FUNCDECL_SYS (strerror_r, int, (int errnum, char *buf, size_t buflen)
+                                   _GL_ARG_NONNULL ((2)));
+#  endif
+_GL_CXXALIAS_SYS (strerror_r, int, (int errnum, char *buf, size_t buflen));
+# endif
+# if @HAVE_DECL_STRERROR_R@
+_GL_CXXALIASWARN (strerror_r);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef strerror_r
+# if HAVE_RAW_DECL_STRERROR_R
+_GL_WARN_ON_USE (strerror_r, "strerror_r is unportable - "
+                 "use gnulib module strerror_r-posix for portability");
+# endif
+#endif
+
 #if @GNULIB_STRSIGNAL@
 # if @REPLACE_STRSIGNAL@
 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 #   define strsignal rpl_strsignal
 #  endif
 _GL_FUNCDECL_RPL (strsignal, char *, (int __sig));
 _GL_CXXALIAS_RPL (strsignal, char *, (int __sig));
 # else
 #  if ! @HAVE_DECL_STRSIGNAL@
 _GL_FUNCDECL_SYS (strsignal, char *, (int __sig));
 #  endif
 /* Need to cast, because on Cygwin 1.5.x systems, the return type is
    'const char *'.  */
 _GL_CXXALIAS_SYS_CAST (strsignal, char *, (int __sig));
 # endif
 _GL_CXXALIASWARN (strsignal);
 #elif defined GNULIB_POSIXCHECK
 # undef strsignal
 # if HAVE_RAW_DECL_STRSIGNAL
 _GL_WARN_ON_USE (strsignal, "strsignal is unportable - "
                  "use gnulib module strsignal for portability");
 # endif
 #endif
 
 #if @GNULIB_STRVERSCMP@
 # if !@HAVE_STRVERSCMP@
 _GL_FUNCDECL_SYS (strverscmp, int, (const char *, const char *)
+                                   _GL_ATTRIBUTE_PURE
                                    _GL_ARG_NONNULL ((1, 2)));
 # endif
 _GL_CXXALIAS_SYS (strverscmp, int, (const char *, const char *));
 _GL_CXXALIASWARN (strverscmp);
 #elif defined GNULIB_POSIXCHECK
 # undef strverscmp
 # if HAVE_RAW_DECL_STRVERSCMP
 _GL_WARN_ON_USE (strverscmp, "strverscmp is unportable - "
                  "use gnulib module strverscmp for portability");
 # endif
 #endif
 
 
-#endif /* _GL_STRING_H */
-#endif /* _GL_STRING_H */
+#endif /* _@GUARD_PREFIX@_STRING_H */
+#endif /* _@GUARD_PREFIX@_STRING_H */