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1 | .\" Copyright (c) Bruno Haible <haible@clisp.cons.org> |
2 | .\" | |
89e3ffe9 | 3 | .\" %%%LICENSE_START(GPLv2+_DOC_ONEPARA) |
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4 | .\" This is free documentation; you can redistribute it and/or |
5 | .\" modify it under the terms of the GNU General Public License as | |
6 | .\" published by the Free Software Foundation; either version 2 of | |
7 | .\" the License, or (at your option) any later version. | |
fe382ebf | 8 | .\" %%%LICENSE_END |
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9 | .\" |
10 | .\" References consulted: | |
11 | .\" GNU glibc-2 source code and manual | |
12 | .\" Dinkumware C library reference http://www.dinkumware.com/ | |
008f1ecc | 13 | .\" OpenGroup's Single UNIX specification http://www.UNIX-systems.org/online.html |
fea681da | 14 | .\" |
4b8c67d9 | 15 | .TH WCSDUP 3 2017-09-15 "GNU" "Linux Programmer's Manual" |
fea681da MK |
16 | .SH NAME |
17 | wcsdup \- duplicate a wide-character string | |
18 | .SH SYNOPSIS | |
19 | .nf | |
fea681da | 20 | .B #include <wchar.h> |
68e4db0a | 21 | .PP |
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22 | .BI "wchar_t *wcsdup(const wchar_t *" s ); |
23 | .fi | |
68e4db0a | 24 | .PP |
d6a4140d MK |
25 | .in -4n |
26 | Feature Test Macro Requirements for glibc (see | |
27 | .BR feature_test_macros (7)): | |
28 | .in | |
68e4db0a | 29 | .PP |
d6a4140d | 30 | .BR wcsdup (): |
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31 | .PD 0 |
32 | .ad l | |
33 | .RS 4 | |
34 | .TP 4 | |
35 | Since glibc 2.10: | |
b0da7b8b | 36 | _POSIX_C_SOURCE\ >=\ 200809L |
ea91c3fd | 37 | .TP |
d6a4140d MK |
38 | Before glibc 2.10: |
39 | _GNU_SOURCE | |
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40 | .RE |
41 | .ad | |
42 | .PD | |
fea681da | 43 | .SH DESCRIPTION |
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44 | The |
45 | .BR wcsdup () | |
46 | function is the wide-character equivalent | |
47 | of the | |
48 | .BR strdup (3) | |
49 | function. | |
c13182ef | 50 | It allocates and returns a new wide-character string whose initial |
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51 | contents is a duplicate of the wide-character string pointed to by |
52 | .IR s . | |
fea681da | 53 | .PP |
c13182ef | 54 | Memory for the new wide-character string is |
60a90ecd MK |
55 | obtained with |
56 | .BR malloc (3), | |
60d38add | 57 | and should be freed with |
60a90ecd | 58 | .BR free (3). |
47297adb | 59 | .SH RETURN VALUE |
572acb41 | 60 | On success, |
60a90ecd | 61 | .BR wcsdup () |
572acb41 | 62 | returns a pointer to the new wide-character string. |
a150608c | 63 | On error, it returns NULL, with |
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64 | .I errno |
65 | set to indicate the cause of the error. | |
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66 | .SH ERRORS |
67 | .TP | |
68 | .B ENOMEM | |
69 | Insufficient memory available to allocate duplicate string. | |
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70 | .SH ATTRIBUTES |
71 | For an explanation of the terms used in this section, see | |
72 | .BR attributes (7). | |
73 | .TS | |
74 | allbox; | |
75 | lb lb lb | |
76 | l l l. | |
77 | Interface Attribute Value | |
78 | T{ | |
79 | .BR wcsdup () | |
80 | T} Thread safety MT-Safe | |
81 | .TE | |
847e0d88 | 82 | .sp 1 |
47297adb | 83 | .SH CONFORMING TO |
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84 | POSIX.1-2008. |
85 | This function is not specified in POSIX.1-2001, | |
86 | and is not widely available on other systems. | |
fea681da | 87 | .\" present in libc5 and glibc 2.0 and later |
47297adb | 88 | .SH SEE ALSO |
fea681da | 89 | .BR strdup (3), |
0a4f8b7b | 90 | .BR wcscpy (3) |