WCSDUP(3)                  POSIX Programmer's Manual                 WCSDUP(3)



PPRROOLLOOGG
       This manual page is part of the POSIX Programmer's Manual.  The OS
       implementation of this interface may differ (consult the corresponding
       OS manual page for details of OS behavior), or the interface may not be
       implemented on OS.

NNAAMMEE
       wcsdup -- duplicate a wide-character string

SSYYNNOOPPSSIISS
       #include <wchar.h>

       wchar_t *wcsdup(const wchar_t *_s_t_r_i_n_g);

DDEESSCCRRIIPPTTIIOONN
       The _w_c_s_d_u_p() function is the wide-character equivalent of the _s_t_r_d_u_p()
       function.

       The _w_c_s_d_u_p() function shall return a pointer to a new wide-character
       string, allocated as if by a call to _m_a_l_l_o_c(), which is the duplicate
       of the wide-character string _s_t_r_i_n_g.  The returned pointer can be
       passed to _f_r_e_e().  A null pointer is returned if the new wide-character
       string cannot be created.

RREETTUURRNN VVAALLUUEE
       Upon successful completion, the _w_c_s_d_u_p() function shall return a
       pointer to the newly allocated wide-character string. Otherwise, it
       shall return a null pointer and set _e_r_r_n_o to indicate the error.

EERRRROORRSS
       The _w_c_s_d_u_p() function shall fail if:

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

       _T_h_e _f_o_l_l_o_w_i_n_g _s_e_c_t_i_o_n_s _a_r_e _i_n_f_o_r_m_a_t_i_v_e_.

EEXXAAMMPPLLEESS
       None.

AAPPPPLLIICCAATTIIOONN UUSSAAGGEE
       For functions that allocate memory as if by _m_a_l_l_o_c(), the application
       should release such memory when it is no longer required by a call to
       _f_r_e_e().  For _w_c_s_d_u_p(), this is the return value.

RRAATTIIOONNAALLEE
       None.

FFUUTTUURREE DDIIRREECCTTIIOONNSS
       None.

SSEEEE AALLSSOO
       _f_r_e_e(), _s_t_r_d_u_p(), _w_c_s_c_p_y()

       The Base Definitions volume of POSIX.1-2017, <<wwcchhaarr..hh>>

CCOOPPYYRRIIGGHHTT
       Portions of this text are reprinted and reproduced in electronic form
       from IEEE Std 1003.1-2017, Standard for Information Technology --
       Portable Operating System Interface (POSIX), The Open Group Base
       Specifications Issue 7, 2018 Edition, Copyright (C) 2018 by the
       Institute of Electrical and Electronics Engineers, Inc and The Open
       Group.  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.opengroup.org/unix/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 .



IEEE/The Open Group                  2017                            WCSDUP(3)
