Sync with the latest Gnulib code (6f2d632)

1 files changed, 288 insertions, 44 deletions

diff --git a/gl/stdlib.in.h b/gl/stdlib.in.h
index d4ac4690..c9552480 100644
--- a/gl/stdlib.in.h
+++ b/gl/stdlib.in.h
@@ -1,6 +1,6 @@
 /* A GNU-like <stdlib.h>.
 
-   Copyright (C) 1995, 2001-2004, 2006-2010 Free Software Foundation, Inc.
+   Copyright (C) 1995, 2001-2004, 2006-2013 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
@@ -18,43 +18,60 @@
 #if __GNUC__ >= 3
 @PRAGMA_SYSTEM_HEADER@
 #endif
+@PRAGMA_COLUMNS@
 
-#if defined __need_malloc_and_calloc
-/* Special invocation convention inside glibc header files.  */
+#if defined __need_system_stdlib_h || defined __need_malloc_and_calloc
+/* Special invocation conventions inside some gnulib header files,
+   and inside some glibc header files, respectively.  */
 
 #@INCLUDE_NEXT@ @NEXT_STDLIB_H@
 
 #else
 /* Normal invocation convention.  */
 
-#ifndef _GL_STDLIB_H
+#ifndef _@GUARD_PREFIX@_STDLIB_H
 
 /* The include_next requires a split double-inclusion guard.  */
 #@INCLUDE_NEXT@ @NEXT_STDLIB_H@
 
-#ifndef _GL_STDLIB_H
-#define _GL_STDLIB_H
+#ifndef _@GUARD_PREFIX@_STDLIB_H
+#define _@GUARD_PREFIX@_STDLIB_H
 
 /* NetBSD 5.0 mis-defines NULL.  */
 #include <stddef.h>
 
+/* MirBSD 10 defines WEXITSTATUS in <sys/wait.h>, not in <stdlib.h>.  */
+#if @GNULIB_SYSTEM_POSIX@ && !defined WEXITSTATUS
+# include <sys/wait.h>
+#endif
+
 /* Solaris declares getloadavg() in <sys/loadavg.h>.  */
 #if (@GNULIB_GETLOADAVG@ || defined GNULIB_POSIXCHECK) && @HAVE_SYS_LOADAVG_H@
 # include <sys/loadavg.h>
 #endif
 
-/* OSF/1 5.1 declares 'struct random_data' in <random.h>, which is included
-   from <stdlib.h> if _REENTRANT is defined.  Include it always.  */
-#if @HAVE_RANDOM_H@
-# include <random.h>
+/* Native Windows platforms declare mktemp() in <io.h>.  */
+#if 0 && ((defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__)
+# include <io.h>
 #endif
 
-#if !@HAVE_STRUCT_RANDOM_DATA@ || (@GNULIB_RANDOM_R@ && !@HAVE_RANDOM_R@) \
-    || defined GNULIB_POSIXCHECK
-# include <stdint.h>
-#endif
+#if @GNULIB_RANDOM_R@
+
+/* OSF/1 5.1 declares 'struct random_data' in <random.h>, which is included
+   from <stdlib.h> if _REENTRANT is defined.  Include it whenever we need
+   'struct random_data'.  */
+# if @HAVE_RANDOM_H@
+#  include <random.h>
+# endif
 
-#if !@HAVE_STRUCT_RANDOM_DATA@
+# if !@HAVE_STRUCT_RANDOM_DATA@ || @REPLACE_RANDOM_R@ || !@HAVE_RANDOM_R@
+#  include <stdint.h>
+# endif
+
+# if !@HAVE_STRUCT_RANDOM_DATA@
+/* Define 'struct random_data'.
+   But allow multiple gnulib generated <stdlib.h> replacements to coexist.  */
+#  if !GNULIB_defined_struct_random_data
 struct random_data
 {
   int32_t *fptr;                /* Front pointer.  */
@@ -65,21 +82,29 @@ struct random_data
   int rand_sep;                 /* Distance between front and rear.  */
   int32_t *end_ptr;             /* Pointer behind state table.  */
 };
+#   define GNULIB_defined_struct_random_data 1
+#  endif
+# endif
 #endif
 
-#if (@GNULIB_MKSTEMP@ || @GNULIB_GETSUBOPT@ || defined GNULIB_POSIXCHECK) && ! defined __GLIBC__ && !((defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__)
-/* On MacOS X 10.3, only <unistd.h> declares mkstemp.  */
+#if (@GNULIB_MKSTEMP@ || @GNULIB_MKSTEMPS@ || @GNULIB_GETSUBOPT@ || defined GNULIB_POSIXCHECK) && ! defined __GLIBC__ && !((defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__)
+/* On Mac OS X 10.3, only <unistd.h> declares mkstemp.  */
+/* On Mac OS X 10.5, only <unistd.h> declares mkstemps.  */
 /* On Cygwin 1.7.1, only <unistd.h> declares getsubopt.  */
 /* But avoid namespace pollution on glibc systems and native Windows.  */
 # include <unistd.h>
 #endif
 
-#ifndef __attribute__
-# if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 8)
-#  define __attribute__(Spec)   /* 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
 
+/* The definition of _Noreturn is copied here.  */
+
 /* The definitions of _GL_FUNCDECL_RPL etc. are copied here.  */
 
 /* The definition of _GL_ARG_NONNULL is copied here.  */
@@ -105,7 +130,7 @@ struct random_data
 /* Terminate the current process with the given return code, without running
    the 'atexit' handlers.  */
 # if !@HAVE__EXIT@
-_GL_FUNCDECL_SYS (_Exit, void, (int status) __attribute__ ((__noreturn__)));
+_GL_FUNCDECL_SYS (_Exit, _Noreturn void, (int status));
 # endif
 _GL_CXXALIAS_SYS (_Exit, void, (int status));
 _GL_CXXALIASWARN (_Exit);
@@ -122,7 +147,9 @@ _GL_WARN_ON_USE (_Exit, "_Exit is unportable - "
 /* Parse a signed decimal integer.
    Returns the value of the integer.  Errors are not detected.  */
 # if !@HAVE_ATOLL@
-_GL_FUNCDECL_SYS (atoll, long long, (const char *string) _GL_ARG_NONNULL ((1)));
+_GL_FUNCDECL_SYS (atoll, long long, (const char *string)
+                                    _GL_ATTRIBUTE_PURE
+                                    _GL_ARG_NONNULL ((1)));
 # endif
 _GL_CXXALIAS_SYS (atoll, long long, (const char *string));
 _GL_CXXALIASWARN (atoll);
@@ -172,7 +199,8 @@ _GL_CXXALIASWARN (canonicalize_file_name);
 #elif defined GNULIB_POSIXCHECK
 # undef canonicalize_file_name
 # if HAVE_RAW_DECL_CANONICALIZE_FILE_NAME
-_GL_WARN_ON_USE (canonicalize_file_name, "canonicalize_file_name is unportable - "
+_GL_WARN_ON_USE (canonicalize_file_name,
+                 "canonicalize_file_name is unportable - "
                  "use gnulib module canonicalize-lgpl for portability");
 # endif
 #endif
@@ -235,14 +263,19 @@ _GL_CXXALIASWARN (grantpt);
 #elif defined GNULIB_POSIXCHECK
 # undef grantpt
 # if HAVE_RAW_DECL_GRANTPT
-_GL_WARN_ON_USE (ptsname, "grantpt is not portable - "
+_GL_WARN_ON_USE (grantpt, "grantpt is not portable - "
                  "use gnulib module grantpt for portability");
 # endif
 #endif
 
+/* If _GL_USE_STDLIB_ALLOC is nonzero, the including module does not
+   rely on GNU or POSIX semantics for malloc and realloc (for example,
+   by never specifying a zero size), so it does not need malloc or
+   realloc to be redefined.  */
 #if @GNULIB_MALLOC_POSIX@
 # if @REPLACE_MALLOC@
-#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#  if !((defined __cplusplus && defined GNULIB_NAMESPACE) \
+        || _GL_USE_STDLIB_ALLOC)
 #   undef malloc
 #   define malloc rpl_malloc
 #  endif
@@ -252,13 +285,28 @@ _GL_CXXALIAS_RPL (malloc, void *, (size_t size));
 _GL_CXXALIAS_SYS (malloc, void *, (size_t size));
 # endif
 _GL_CXXALIASWARN (malloc);
-#elif defined GNULIB_POSIXCHECK
+#elif defined GNULIB_POSIXCHECK && !_GL_USE_STDLIB_ALLOC
 # undef malloc
 /* Assume malloc is always declared.  */
 _GL_WARN_ON_USE (malloc, "malloc is not POSIX compliant everywhere - "
                  "use gnulib module malloc-posix for portability");
 #endif
 
+/* Convert a multibyte character to a wide character.  */
+#if @GNULIB_MBTOWC@
+# if @REPLACE_MBTOWC@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef mbtowc
+#   define mbtowc rpl_mbtowc
+#  endif
+_GL_FUNCDECL_RPL (mbtowc, int, (wchar_t *pwc, const char *s, size_t n));
+_GL_CXXALIAS_RPL (mbtowc, int, (wchar_t *pwc, const char *s, size_t n));
+# else
+_GL_CXXALIAS_SYS (mbtowc, int, (wchar_t *pwc, const char *s, size_t n));
+# endif
+_GL_CXXALIASWARN (mbtowc);
+#endif
+
 #if @GNULIB_MKDTEMP@
 /* Create a unique temporary directory from TEMPLATE.
    The last six characters of TEMPLATE must be "XXXXXX";
@@ -391,13 +439,38 @@ _GL_WARN_ON_USE (mkstemps, "mkstemps is unportable - "
 # endif
 #endif
 
+#if @GNULIB_POSIX_OPENPT@
+/* Return an FD open to the master side of a pseudo-terminal.  Flags should
+   include O_RDWR, and may also include O_NOCTTY.  */
+# if !@HAVE_POSIX_OPENPT@
+_GL_FUNCDECL_SYS (posix_openpt, int, (int flags));
+# endif
+_GL_CXXALIAS_SYS (posix_openpt, int, (int flags));
+_GL_CXXALIASWARN (posix_openpt);
+#elif defined GNULIB_POSIXCHECK
+# undef posix_openpt
+# if HAVE_RAW_DECL_POSIX_OPENPT
+_GL_WARN_ON_USE (posix_openpt, "posix_openpt is not portable - "
+                 "use gnulib module posix_openpt for portability");
+# endif
+#endif
+
 #if @GNULIB_PTSNAME@
 /* Return the pathname of the pseudo-terminal slave associated with
    the master FD is open on, or NULL on errors.  */
-# if !@HAVE_PTSNAME@
+# if @REPLACE_PTSNAME@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef ptsname
+#   define ptsname rpl_ptsname
+#  endif
+_GL_FUNCDECL_RPL (ptsname, char *, (int fd));
+_GL_CXXALIAS_RPL (ptsname, char *, (int fd));
+# else
+#  if !@HAVE_PTSNAME@
 _GL_FUNCDECL_SYS (ptsname, char *, (int fd));
-# endif
+#  endif
 _GL_CXXALIAS_SYS (ptsname, char *, (int fd));
+# endif
 _GL_CXXALIASWARN (ptsname);
 #elif defined GNULIB_POSIXCHECK
 # undef ptsname
@@ -407,6 +480,32 @@ _GL_WARN_ON_USE (ptsname, "ptsname is not portable - "
 # endif
 #endif
 
+#if @GNULIB_PTSNAME_R@
+/* Set the pathname of the pseudo-terminal slave associated with
+   the master FD is open on and return 0, or set errno and return
+   non-zero on errors.  */
+# if @REPLACE_PTSNAME_R@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef ptsname_r
+#   define ptsname_r rpl_ptsname_r
+#  endif
+_GL_FUNCDECL_RPL (ptsname_r, int, (int fd, char *buf, size_t len));
+_GL_CXXALIAS_RPL (ptsname_r, int, (int fd, char *buf, size_t len));
+# else
+#  if !@HAVE_PTSNAME_R@
+_GL_FUNCDECL_SYS (ptsname_r, int, (int fd, char *buf, size_t len));
+#  endif
+_GL_CXXALIAS_SYS (ptsname_r, int, (int fd, char *buf, size_t len));
+# endif
+_GL_CXXALIASWARN (ptsname_r);
+#elif defined GNULIB_POSIXCHECK
+# undef ptsname_r
+# if HAVE_RAW_DECL_PTSNAME_R
+_GL_WARN_ON_USE (ptsname_r, "ptsname_r is not portable - "
+                 "use gnulib module ptsname_r for portability");
+# endif
+#endif
+
 #if @GNULIB_PUTENV@
 # if @REPLACE_PUTENV@
 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
@@ -430,12 +529,83 @@ _GL_CXXALIASWARN (putenv);
 # endif
 #endif
 
+
+#if @GNULIB_RANDOM@
+# if !@HAVE_RANDOM@
+_GL_FUNCDECL_SYS (random, long, (void));
+# endif
+_GL_CXXALIAS_SYS (random, long, (void));
+_GL_CXXALIASWARN (random);
+#elif defined GNULIB_POSIXCHECK
+# undef random
+# if HAVE_RAW_DECL_RANDOM
+_GL_WARN_ON_USE (random, "random is unportable - "
+                 "use gnulib module random for portability");
+# endif
+#endif
+
+#if @GNULIB_RANDOM@
+# if !@HAVE_RANDOM@
+_GL_FUNCDECL_SYS (srandom, void, (unsigned int seed));
+# endif
+_GL_CXXALIAS_SYS (srandom, void, (unsigned int seed));
+_GL_CXXALIASWARN (srandom);
+#elif defined GNULIB_POSIXCHECK
+# undef srandom
+# if HAVE_RAW_DECL_SRANDOM
+_GL_WARN_ON_USE (srandom, "srandom is unportable - "
+                 "use gnulib module random for portability");
+# endif
+#endif
+
+#if @GNULIB_RANDOM@
+# if !@HAVE_RANDOM@
+_GL_FUNCDECL_SYS (initstate, char *,
+                  (unsigned int seed, char *buf, size_t buf_size)
+                  _GL_ARG_NONNULL ((2)));
+# endif
+_GL_CXXALIAS_SYS (initstate, char *,
+                  (unsigned int seed, char *buf, size_t buf_size));
+_GL_CXXALIASWARN (initstate);
+#elif defined GNULIB_POSIXCHECK
+# undef initstate
+# if HAVE_RAW_DECL_INITSTATE_R
+_GL_WARN_ON_USE (initstate, "initstate is unportable - "
+                 "use gnulib module random for portability");
+# endif
+#endif
+
+#if @GNULIB_RANDOM@
+# if !@HAVE_RANDOM@
+_GL_FUNCDECL_SYS (setstate, char *, (char *arg_state) _GL_ARG_NONNULL ((1)));
+# endif
+_GL_CXXALIAS_SYS (setstate, char *, (char *arg_state));
+_GL_CXXALIASWARN (setstate);
+#elif defined GNULIB_POSIXCHECK
+# undef setstate
+# if HAVE_RAW_DECL_SETSTATE_R
+_GL_WARN_ON_USE (setstate, "setstate is unportable - "
+                 "use gnulib module random for portability");
+# endif
+#endif
+
+
 #if @GNULIB_RANDOM_R@
-# if !@HAVE_RANDOM_R@
+# if @REPLACE_RANDOM_R@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef random_r
+#   define random_r rpl_random_r
+#  endif
+_GL_FUNCDECL_RPL (random_r, int, (struct random_data *buf, int32_t *result)
+                                 _GL_ARG_NONNULL ((1, 2)));
+_GL_CXXALIAS_RPL (random_r, int, (struct random_data *buf, int32_t *result));
+# else
+#  if !@HAVE_RANDOM_R@
 _GL_FUNCDECL_SYS (random_r, int, (struct random_data *buf, int32_t *result)
                                  _GL_ARG_NONNULL ((1, 2)));
-# endif
+#  endif
 _GL_CXXALIAS_SYS (random_r, int, (struct random_data *buf, int32_t *result));
+# endif
 _GL_CXXALIASWARN (random_r);
 #elif defined GNULIB_POSIXCHECK
 # undef random_r
@@ -446,13 +616,25 @@ _GL_WARN_ON_USE (random_r, "random_r is unportable - "
 #endif
 
 #if @GNULIB_RANDOM_R@
-# if !@HAVE_RANDOM_R@
+# if @REPLACE_RANDOM_R@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef srandom_r
+#   define srandom_r rpl_srandom_r
+#  endif
+_GL_FUNCDECL_RPL (srandom_r, int,
+                  (unsigned int seed, struct random_data *rand_state)
+                  _GL_ARG_NONNULL ((2)));
+_GL_CXXALIAS_RPL (srandom_r, int,
+                  (unsigned int seed, struct random_data *rand_state));
+# else
+#  if !@HAVE_RANDOM_R@
 _GL_FUNCDECL_SYS (srandom_r, int,
                   (unsigned int seed, struct random_data *rand_state)
                   _GL_ARG_NONNULL ((2)));
-# endif
+#  endif
 _GL_CXXALIAS_SYS (srandom_r, int,
                   (unsigned int seed, struct random_data *rand_state));
+# endif
 _GL_CXXALIASWARN (srandom_r);
 #elif defined GNULIB_POSIXCHECK
 # undef srandom_r
@@ -463,15 +645,29 @@ _GL_WARN_ON_USE (srandom_r, "srandom_r is unportable - "
 #endif
 
 #if @GNULIB_RANDOM_R@
-# if !@HAVE_RANDOM_R@
+# if @REPLACE_RANDOM_R@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef initstate_r
+#   define initstate_r rpl_initstate_r
+#  endif
+_GL_FUNCDECL_RPL (initstate_r, int,
+                  (unsigned int seed, char *buf, size_t buf_size,
+                   struct random_data *rand_state)
+                  _GL_ARG_NONNULL ((2, 4)));
+_GL_CXXALIAS_RPL (initstate_r, int,
+                  (unsigned int seed, char *buf, size_t buf_size,
+                   struct random_data *rand_state));
+# else
+#  if !@HAVE_RANDOM_R@
 _GL_FUNCDECL_SYS (initstate_r, int,
                   (unsigned int seed, char *buf, size_t buf_size,
                    struct random_data *rand_state)
                   _GL_ARG_NONNULL ((2, 4)));
-# endif
+#  endif
 _GL_CXXALIAS_SYS (initstate_r, int,
                   (unsigned int seed, char *buf, size_t buf_size,
                    struct random_data *rand_state));
+# endif
 _GL_CXXALIASWARN (initstate_r);
 #elif defined GNULIB_POSIXCHECK
 # undef initstate_r
@@ -482,13 +678,25 @@ _GL_WARN_ON_USE (initstate_r, "initstate_r is unportable - "
 #endif
 
 #if @GNULIB_RANDOM_R@
-# if !@HAVE_RANDOM_R@
+# if @REPLACE_RANDOM_R@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef setstate_r
+#   define setstate_r rpl_setstate_r
+#  endif
+_GL_FUNCDECL_RPL (setstate_r, int,
+                  (char *arg_state, struct random_data *rand_state)
+                  _GL_ARG_NONNULL ((1, 2)));
+_GL_CXXALIAS_RPL (setstate_r, int,
+                  (char *arg_state, struct random_data *rand_state));
+# else
+#  if !@HAVE_RANDOM_R@
 _GL_FUNCDECL_SYS (setstate_r, int,
                   (char *arg_state, struct random_data *rand_state)
                   _GL_ARG_NONNULL ((1, 2)));
-# endif
+#  endif
 _GL_CXXALIAS_SYS (setstate_r, int,
                   (char *arg_state, struct random_data *rand_state));
+# endif
 _GL_CXXALIASWARN (setstate_r);
 #elif defined GNULIB_POSIXCHECK
 # undef setstate_r
@@ -501,7 +709,8 @@ _GL_WARN_ON_USE (setstate_r, "setstate_r is unportable - "
 
 #if @GNULIB_REALLOC_POSIX@
 # if @REPLACE_REALLOC@
-#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#  if !((defined __cplusplus && defined GNULIB_NAMESPACE) \
+        || _GL_USE_STDLIB_ALLOC)
 #   undef realloc
 #   define realloc rpl_realloc
 #  endif
@@ -511,7 +720,7 @@ _GL_CXXALIAS_RPL (realloc, void *, (void *ptr, size_t size));
 _GL_CXXALIAS_SYS (realloc, void *, (void *ptr, size_t size));
 # endif
 _GL_CXXALIASWARN (realloc);
-#elif defined GNULIB_POSIXCHECK
+#elif defined GNULIB_POSIXCHECK && !_GL_USE_STDLIB_ALLOC
 # undef realloc
 /* Assume realloc is always declared.  */
 _GL_WARN_ON_USE (realloc, "realloc is not POSIX compliant everywhere - "
@@ -558,6 +767,22 @@ _GL_WARN_ON_USE (rpmatch, "rpmatch is unportable - "
 # endif
 #endif
 
+#if @GNULIB_SECURE_GETENV@
+/* Look up NAME in the environment, returning 0 in insecure situations.  */
+# if !@HAVE_SECURE_GETENV@
+_GL_FUNCDECL_SYS (secure_getenv, char *,
+                  (char const *name) _GL_ARG_NONNULL ((1)));
+# endif
+_GL_CXXALIAS_SYS (secure_getenv, char *, (char const *name));
+_GL_CXXALIASWARN (secure_getenv);
+#elif defined GNULIB_POSIXCHECK
+# undef secure_getenv
+# if HAVE_RAW_DECL_SECURE_GETENV
+_GL_WARN_ON_USE (secure_getenv, "secure_getenv is unportable - "
+                 "use gnulib module secure_getenv for portability");
+# endif
+#endif
+
 #if @GNULIB_SETENV@
 /* Set NAME to VALUE in the environment.
    If REPLACE is nonzero, overwrite an existing value.  */
@@ -572,7 +797,7 @@ _GL_FUNCDECL_RPL (setenv, int,
 _GL_CXXALIAS_RPL (setenv, int,
                   (const char *name, const char *value, int replace));
 # else
-#  if !@HAVE_SETENV@
+#  if !@HAVE_DECL_SETENV@
 _GL_FUNCDECL_SYS (setenv, int,
                   (const char *name, const char *value, int replace)
                   _GL_ARG_NONNULL ((1)));
@@ -580,7 +805,9 @@ _GL_FUNCDECL_SYS (setenv, int,
 _GL_CXXALIAS_SYS (setenv, int,
                   (const char *name, const char *value, int replace));
 # endif
+# if !(@REPLACE_SETENV@ && !@HAVE_DECL_SETENV@)
 _GL_CXXALIASWARN (setenv);
+# endif
 #elif defined GNULIB_POSIXCHECK
 # undef setenv
 # if HAVE_RAW_DECL_SETENV
@@ -675,7 +902,7 @@ _GL_CXXALIASWARN (unlockpt);
 #elif defined GNULIB_POSIXCHECK
 # undef unlockpt
 # if HAVE_RAW_DECL_UNLOCKPT
-_GL_WARN_ON_USE (ptsname, "unlockpt is not portable - "
+_GL_WARN_ON_USE (unlockpt, "unlockpt is not portable - "
                  "use gnulib module unlockpt for portability");
 # endif
 #endif
@@ -690,12 +917,14 @@ _GL_WARN_ON_USE (ptsname, "unlockpt is not portable - "
 _GL_FUNCDECL_RPL (unsetenv, int, (const char *name) _GL_ARG_NONNULL ((1)));
 _GL_CXXALIAS_RPL (unsetenv, int, (const char *name));
 # else
-#  if !@HAVE_UNSETENV@
+#  if !@HAVE_DECL_UNSETENV@
 _GL_FUNCDECL_SYS (unsetenv, int, (const char *name) _GL_ARG_NONNULL ((1)));
 #  endif
 _GL_CXXALIAS_SYS (unsetenv, int, (const char *name));
 # endif
+# if !(@REPLACE_UNSETENV@ && !@HAVE_DECL_UNSETENV@)
 _GL_CXXALIASWARN (unsetenv);
+# endif
 #elif defined GNULIB_POSIXCHECK
 # undef unsetenv
 # if HAVE_RAW_DECL_UNSETENV
@@ -704,7 +933,22 @@ _GL_WARN_ON_USE (unsetenv, "unsetenv is unportable - "
 # endif
 #endif
 
+/* Convert a wide character to a multibyte character.  */
+#if @GNULIB_WCTOMB@
+# if @REPLACE_WCTOMB@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef wctomb
+#   define wctomb rpl_wctomb
+#  endif
+_GL_FUNCDECL_RPL (wctomb, int, (char *s, wchar_t wc));
+_GL_CXXALIAS_RPL (wctomb, int, (char *s, wchar_t wc));
+# else
+_GL_CXXALIAS_SYS (wctomb, int, (char *s, wchar_t wc));
+# endif
+_GL_CXXALIASWARN (wctomb);
+#endif
+
 
-#endif /* _GL_STDLIB_H */
-#endif /* _GL_STDLIB_H */
+#endif /* _@GUARD_PREFIX@_STDLIB_H */
+#endif /* _@GUARD_PREFIX@_STDLIB_H */
 #endif