@node wcsstr
@subsection @code{wcsstr}
@findex wcsstr

POSIX specification:@* @url{https://pubs.opengroup.org/onlinepubs/9799919799/functions/wcsstr.html}

Gnulib module: wcsstr or wcsstr-simple
@mindex wcsstr
@mindex wcsstr-simple

Portability problems fixed by either Gnulib module @code{wcsstr-simple} or @code{wcsstr}:
@itemize
@item
This function is missing on some platforms:
HP-UX 11.00.
@end itemize

Portability problems fixed by Gnulib module @code{wcsstr}:
@itemize
@item
This function has quadratic instead of linear worst-case complexity on some
platforms:
glibc 2.39, macOS 14, FreeBSD 13.1, NetBSD 10.0, OpenBSD 7.2, AIX 7.2, HP-UX 11, Solaris 11.4, Cygwin 2.9.0, mingw, MSVC 14.
@end itemize

Portability problems not fixed by Gnulib:
@itemize
@item
On Windows and 32-bit AIX platforms, @code{wchar_t} is a 16-bit type and therefore cannot
accommodate all Unicode characters.
@end itemize
