.\" Copyright (c) Bruno Haible <haible@clisp.cons.org>

.\"

.\" %%%LICENSE_START(GPLv2+_DOC_ONEPARA)

.\" 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.

.\" %%%LICENSE_END

.\"

.\" 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  2017-09-15 "GNU" "Linux Programmer's Manual"

.SH NAME

wcsdup \- duplicate a wide-character string

.SH SYNOPSIS

.nf

.B #include <wchar.h>

.PP

.BI "wchar_t *wcsdup(const wchar_t *" s );

.fi

.PP

.in -4n

Feature Test Macro Requirements for glibc (see

.BR feature_test_macros (7)):

.in

.PP

.BR wcsdup ():

.PD 0

.ad l

.RS 4

.TP 4

Since glibc 2.10:

_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

.IR s .

.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

On success,

.BR wcsdup ()

returns a pointer to the new wide-character string.

On error, it returns NULL, with

.I errno

set to indicate the cause of the error.

.SH ERRORS

.TP

.B ENOMEM

Insufficient memory available to allocate duplicate string.

.SH ATTRIBUTES

For an explanation of the terms used in this section, see

.BR attributes (7).

.TS

allbox;

lb lb lb

l l l.

Interface	Attribute	Value

T{

.BR wcsdup ()

T}	Thread safety	MT-Safe

.TE

.sp 1

.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 4.15 of the Linux

.I man-pages

project.

A description of the project,

information about reporting bugs,

and the latest version of this page,

can be found at

\%https://www.kernel.org/doc/man\-pages/.