1/* Copyright (C) 2001-2022 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
8
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
13
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, see
16 <https://www.gnu.org/licenses/>. */
17
18#include <errno.h>
19#include <iconv.h>
20#include <mcheck.h>
21#include <stddef.h>
22#include <stdio.h>
23#include <stdlib.h>
24#include <string.h>
25
26
27static int
28do_test (void)
29{
30 char buf[3];
31 const wchar_t wc[1] = L"a";
32 iconv_t cd;
33 char *inptr;
34 size_t inlen;
35 char *outptr;
36 size_t outlen;
37 size_t n;
38 int e;
39 int result = 0;
40
41 mtrace ();
42
43 cd = iconv_open (tocode: "UCS4", fromcode: "WCHAR_T");
44 if (cd == (iconv_t) -1)
45 {
46 printf (format: "cannot convert from wchar_t to UCS4: %m\n");
47 exit (status: 1);
48 }
49
50 inptr = (char *) wc;
51 inlen = sizeof (wchar_t);
52 outptr = buf;
53 outlen = 3;
54
55 n = iconv (cd: cd, inbuf: &inptr, inbytesleft: &inlen, outbuf: &outptr, outbytesleft: &outlen);
56 e = errno;
57
58 if (n != (size_t) -1)
59 {
60 printf (format: "incorrect iconv() return value: %zd, expected -1\n", n);
61 result = 1;
62 }
63
64 if (e != E2BIG)
65 {
66 printf (format: "incorrect error value: %s, expected %s\n",
67 strerror (errnum: e), strerror (E2BIG));
68 result = 1;
69 }
70
71 if (inptr != (char *) wc)
72 {
73 puts (s: "inptr changed");
74 result = 1;
75 }
76
77 if (inlen != sizeof (wchar_t))
78 {
79 puts (s: "inlen changed");
80 result = 1;
81 }
82
83 if (outptr != buf)
84 {
85 puts (s: "outptr changed");
86 result = 1;
87 }
88
89 if (outlen != 3)
90 {
91 puts (s: "outlen changed");
92 result = 1;
93 }
94
95 iconv_close (cd: cd);
96
97 return result;
98}
99
100#define TEST_FUNCTION do_test ()
101#include "../test-skeleton.c"
102

source code of glibc/iconv/tst-iconv2.c