.\" Copyright (c) Bruno Haible <haible@clisp.cons.org>
.\"
.\" This is free documentation; 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 2 of
.\" the License, or (at your option) any later version.
.\"
.\" References consulted:
.\"   GNU glibc-2 source code and manual
.\"   Dinkumware C library reference http://www.dinkumware.com/
.\"   OpenGroup's Single UNIX specification http://www.UNIX-systems.org/online.html
.\"
.TH WCSDUP 3  2010-09-15 "GNU" "Linux Programmer's Manual"
.SH NAME
wcsdup \- duplicate a wide-character string
.SH SYNOPSIS
.nf
.B #include <wchar.h>
.sp
.BI "wchar_t *wcsdup(const wchar_t *" s );
.fi
.sp
.in -4n
Feature Test Macro Requirements for glibc (see
.BR feature_test_macros (7)):
.in
.sp
.BR wcsdup ():
.PD 0
.ad l
.RS 4
.TP 4
Since glibc 2.10:
_XOPEN_SOURCE\ >=\ 700 || _POSIX_C_SOURCE\ >=\ 200809L
.TP
Before glibc 2.10:
_GNU_SOURCE
.RE
.ad
.PD
.SH DESCRIPTION
The
.BR wcsdup ()
function is the wide-character equivalent
of the
.BR strdup (3)
function.
It allocates and returns a new wide-character string whose initial
contents is a duplicate of the wide-character string pointed to by \fIs\fP.
.PP
Memory for the new wide-character string is
obtained with
.BR malloc (3),
and should be freed with
.BR free (3).
.SH "RETURN VALUE"
The
.BR wcsdup ()
function returns a pointer
to the new wide-character string,
or NULL if sufficient memory was not available.
.SH ERRORS
.TP
.B ENOMEM
Insufficient memory available to allocate duplicate string.
.SH "CONFORMING TO"
POSIX.1-2008.
This function is not specified in POSIX.1-2001,
and is not widely available on other systems.
.\" present in libc5 and glibc 2.0 and later
.SH "SEE ALSO"
.BR strdup (3),
.BR wcscpy (3)
.SH COLOPHON
This page is part of release 3.44 of the Linux
.I man-pages
project.
A description of the project,
and information about reporting bugs,
can be found at
http://www.kernel.org/doc/man-pages/.