.\" 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)