'\" et

.TH WCSDUP "3P" 2013 "IEEE/The Open Group" "POSIX Programmer's Manual"

.SH PROLOG

This manual page is part of the POSIX Programmer's Manual.

The Linux implementation of this interface may differ (consult

the corresponding Linux manual page for details of Linux behavior),

or the interface may not be implemented on Linux.

.SH NAME

wcsdup

\(em duplicate a wide-character string

.SH SYNOPSIS

.LP

.nf

#include <wchar.h>

.P

wchar_t *wcsdup(const wchar_t *\fIstring\fP);

.fi

.SH DESCRIPTION

The

\fIwcsdup\fR()

function is the wide-character equivalent of the

\fIstrdup\fR()

function.

.P

The

\fIwcsdup\fR()

function shall return a pointer to a new wide-character string,

allocated as if by a call to

\fImalloc\fR(),

which is the duplicate of the wide-character string

.IR string .

The returned pointer can be passed to

\fIfree\fR().

A null pointer is returned if the new wide-character string cannot be

created.

.SH "RETURN VALUE"

Upon successful completion, the

\fIwcsdup\fR()

function shall return a pointer to the newly allocated wide-character

string. Otherwise, it shall return a null pointer and set

.IR errno

to indicate the error.

.SH ERRORS

The

\fIwcsdup\fR()

function shall fail if:

.TP

.BR ENOMEM

Memory large enough for the duplicate string could not be allocated.

.LP

.IR "The following sections are informative."

.SH EXAMPLES

None.

.SH "APPLICATION USAGE"

For functions that allocate memory as if by

\fImalloc\fR(),

the application should release such memory when it is no longer

required by a call to

\fIfree\fR().

For

\fIwcsdup\fR(),

this is the return value.

.SH RATIONALE

None.

.SH "FUTURE DIRECTIONS"

None.

.SH "SEE ALSO"

.IR "\fIfree\fR\^(\|)",

.IR "\fIstrdup\fR\^(\|)",

.IR "\fIwcscpy\fR\^(\|)"

.P

The Base Definitions volume of POSIX.1\(hy2008,

.IR "\fB<wchar.h>\fP"

.SH COPYRIGHT

Portions of this text are reprinted and reproduced in electronic form

from IEEE Std 1003.1, 2013 Edition, Standard for Information Technology

-- Portable Operating System Interface (POSIX), The Open Group Base

Specifications Issue 7, Copyright (C) 2013 by the Institute of

Electrical and Electronics Engineers, Inc and The Open Group.

(This is POSIX.1-2008 with the 2013 Technical Corrigendum 1 applied.) In the

event of any discrepancy between this version and the original IEEE and

The Open Group Standard, the original IEEE and The Open Group Standard

is the referee document. The original Standard can be obtained online at

http://www.unix.org/online.html .

Any typographical or formatting errors that appear

in this page are most likely

to have been introduced during the conversion of the source files to

man page format. To report such errors, see

https://www.kernel.org/doc/man-pages/reporting_bugs.html .