This manual page is part of the POSIX Programmer's Manual. The Linux implementation of this interface

       None.

       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                                        WCSSTR(3POSIX)

       The  functionality  described  on  this  reference  page is aligned with the ISO C standard. Any conflict
       between the requirements described  here  and  the  ISO C  standard  is  unintentional.  This  volume  of
       POSIX.1‐2017 defers to the ISO C standard.

       The wcsstr() function shall locate the first occurrence in the wide-character string pointed to by ws1 of
       the  sequence  of  wide  characters (excluding the terminating null wide character) in the wide-character
       string pointed to by ws2.

       No errors are defined.

       Thefollowingsectionsareinformative.

       None.

       None.

       wcsstr — find a wide-character substring

       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.

       None.

       Upon successful completion, wcsstr() shall return a pointer to the located wide-character  string,  or  a
       null pointer if the wide-character string is not found.

       If ws2 points to a wide-character string with zero length, the function shall return ws1.

wcschr()

       The Base Definitions volume of POSIX.1‐2017, <wchar.h>

       #include <wchar.h>

       wchar_t *wcsstr(const wchar_t *restrict ws1,
           const wchar_t *restrict ws2);