minix/lib/libc/string/wcsdup.3
Lionel Sambuc 84d9c625bf Synchronize on NetBSD-CVS (2013/12/1 12:00:00 UTC)
- Fix for possible unset uid/gid in toproto
 - Fix for default mtree style
 - Update libelf
 - Importing libexecinfo
 - Resynchronize GCC, mpc, gmp, mpfr
 - build.sh: Replace params with show-params.
     This has been done as the make target has been renamed in the same
     way, while a new target named params has been added. This new
     target generates a file containing all the parameters, instead of
     printing it on the console.
 - Update test48 with new etc/services (Fix by Ben Gras <ben@minix3.org)
     get getservbyport() out of the inner loop

Change-Id: Ie6ad5226fa2621ff9f0dee8782ea48f9443d2091
2014-07-28 17:05:06 +02:00

88 lines
2.7 KiB
Groff

.\" $NetBSD: wcsdup.3,v 1.4 2012/12/28 13:53:12 wiz Exp $
.\"
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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 wide 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 .