| .\" Copyright (c) Bruno Haible <haible@clisp.cons.org> |
| .\" |
| .\" %%%LICENSE_START(GPLv2+_DOC_ONEPARA) |
| .\" This is free documentation; you can redistribute it and/or |
| .\" modify it under the terms of the GNU General Public License as |
| .\" published by the Free Software Foundation; either version 2 of |
| .\" the License, or (at your option) any later version. |
| .\" %%%LICENSE_END |
| .\" |
| .\" References consulted: |
| .\" GNU glibc-2 source code and manual |
| .\" Dinkumware C library reference http://www.dinkumware.com/ |
| .\" OpenGroup's Single UNIX specification http://www.UNIX-systems.org/online.html |
| .\" |
| .TH WCSDUP 3 2021-03-22 "GNU" "Linux Programmer's Manual" |
| .SH NAME |
| wcsdup \- duplicate a wide-character string |
| .SH SYNOPSIS |
| .nf |
| .B #include <wchar.h> |
| .PP |
| .BI "wchar_t *wcsdup(const wchar_t *" s ); |
| .fi |
| .PP |
| .RS -4 |
| Feature Test Macro Requirements for glibc (see |
| .BR feature_test_macros (7)): |
| .RE |
| .PP |
| .BR wcsdup (): |
| .nf |
| Since glibc 2.10: |
| _POSIX_C_SOURCE >= 200809L |
| Before glibc 2.10: |
| _GNU_SOURCE |
| .fi |
| .SH DESCRIPTION |
| The |
| .BR wcsdup () |
| function is the wide-character equivalent |
| of the |
| .BR strdup (3) |
| function. |
| It allocates and returns a new wide-character string whose initial |
| contents is a duplicate of the wide-character string pointed to by |
| .IR s . |
| .PP |
| Memory for the new wide-character string is |
| obtained with |
| .BR malloc (3), |
| and should be freed with |
| .BR free (3). |
| .SH RETURN VALUE |
| On success, |
| .BR wcsdup () |
| returns a pointer to the new wide-character string. |
| On error, it returns NULL, with |
| .I errno |
| set to indicate the error. |
| .SH ERRORS |
| .TP |
| .B ENOMEM |
| Insufficient memory available to allocate duplicate string. |
| .SH ATTRIBUTES |
| For an explanation of the terms used in this section, see |
| .BR attributes (7). |
| .ad l |
| .nh |
| .TS |
| allbox; |
| lbx lb lb |
| l l l. |
| Interface Attribute Value |
| T{ |
| .BR wcsdup () |
| T} Thread safety MT-Safe |
| .TE |
| .hy |
| .ad |
| .sp 1 |
| .SH CONFORMING TO |
| POSIX.1-2008. |
| This function is not specified in POSIX.1-2001, |
| and is not widely available on other systems. |
| .\" present in libc5 and glibc 2.0 and later |
| .SH SEE ALSO |
| .BR strdup (3), |
| .BR wcscpy (3) |
