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.\"     from: @(#)strdup.3	8.1 (Berkeley) 6/9/93
.\"
.Dd August 25, 2006
.Dt WCSDUP 3
.Os
.Sh NAME
.Nm wcsdup
.Nd save a copy of a string
.Sh LIBRARY
.Lb libc
.Sh SYNOPSIS
.In wchar.h
.Ft wchar_t *
.Fn wcsdup "const wchar_t *str"
.Sh DESCRIPTION
The
.Fn wcsdup
function
allocates sufficient memory for a copy
of the wide character string
.Fa str ,
does the copy, and returns a pointer to it.
The pointer may subsequently be used as an
argument to the function
.Xr free 3 .
.Pp
If insufficient memory is available,
.Dv NULL
is returned.
.Sh EXAMPLES
The following will point
.Va p
to an allocated area of memory containing the nul-terminated string
.Qq foobar :
.Bd -literal -offset indent
wchar_t *p;

if (p = wcsdup(L"foobar"), p == NULL) {
	fprintf(stderr, "Out of memory.\en");
	exit(1);
}
.Ed
.Sh ERRORS
The
.Fn wcsdup
function may fail and set the external variable
.Va errno
for any of the errors specified for the library function
.Xr malloc 3 .
.Sh SEE ALSO
.Xr free 3 ,
.Xr malloc 3 ,
.Xr strdup 3
.Sh HISTORY
The
.Fn wcsdup
function first appeared in
.Nx 4.0 .