mirror of https://github.com/mkerrisk/man-pages
74 lines
1.8 KiB
Groff
74 lines
1.8 KiB
Groff
.\" Copyright (c) Bruno Haible <haible@clisp.cons.org>
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.\"
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.\" This is free documentation; you can redistribute it and/or
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.\" modify it under the terms of the GNU General Public License as
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.\" published by the Free Software Foundation; either version 2 of
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.\" the License, or (at your option) any later version.
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.\"
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.\" References consulted:
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.\" GNU glibc-2 source code and manual
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.\" Dinkumware C library reference http://www.dinkumware.com/
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.\" OpenGroup's Single UNIX specification http://www.UNIX-systems.org/online.html
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.\"
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.TH WCSDUP 3 2010-09-15 "GNU" "Linux Programmer's Manual"
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.SH NAME
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wcsdup \- duplicate a wide-character string
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.SH SYNOPSIS
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.nf
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.B #include <wchar.h>
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.sp
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.BI "wchar_t *wcsdup(const wchar_t *" s );
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.fi
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.sp
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.in -4n
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Feature Test Macro Requirements for glibc (see
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.BR feature_test_macros (7)):
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.in
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.sp
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.BR wcsdup ():
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.PD 0
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.ad l
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.RS 4
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.TP 4
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Since glibc 2.10:
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_XOPEN_SOURCE\ >=\ 700 || _POSIX_C_SOURCE\ >=\ 200809L
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.TP
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Before glibc 2.10:
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_GNU_SOURCE
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.RE
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.ad
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.PD
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.SH DESCRIPTION
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The
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.BR wcsdup ()
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function is the wide-character equivalent
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of the
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.BR strdup (3)
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function.
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It allocates and returns a new wide-character string whose initial
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contents is a duplicate of the wide-character string pointed to by \fIs\fP.
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.PP
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Memory for the new wide-character string is
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obtained with
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.BR malloc (3),
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and should be freed with
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.BR free (3).
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.SH "RETURN VALUE"
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The
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.BR wcsdup ()
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function returns a pointer
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to the new wide-character string,
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or NULL if sufficient memory was not available.
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.SH ERRORS
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.TP
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.B ENOMEM
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Insufficient memory available to allocate duplicate string.
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.SH "CONFORMING TO"
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POSIX.1-2008.
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This function is not specified in POSIX.1-2001,
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and is not widely available on other systems.
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.\" present in libc5 and glibc 2.0 and later
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.SH "SEE ALSO"
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.BR strdup (3),
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.BR wcscpy (3)
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