1 /* Test of <errno.h> substitute.
2    Copyright (C) 2008-2020 Free Software Foundation, Inc.
3 
4    This program is free software: you can redistribute it and/or modify
5    it under the terms of the GNU General Public License as published by
6    the Free Software Foundation; either version 3 of the License, or
7    (at your option) any later version.
8 
9    This program 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
12    GNU General Public License for more details.
13 
14    You should have received a copy of the GNU General Public License
15    along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
16 
17 /* Written by Bruno Haible <bruno@clisp.org>, 2008.  */
18 
19 #include <config.h>
20 
21 #include <errno.h>
22 
23 /* Verify that the POSIX mandated errno values exist and can be used as
24    initializers outside of a function.
25    The variable names happen to match the Linux/x86 error numbers.  */
26 int e1 = EPERM;
27 int e2 = ENOENT;
28 int e3 = ESRCH;
29 int e4 = EINTR;
30 int e5 = EIO;
31 int e6 = ENXIO;
32 int e7 = E2BIG;
33 int e8 = ENOEXEC;
34 int e9 = EBADF;
35 int e10 = ECHILD;
36 int e11 = EAGAIN;
37 int e11a = EWOULDBLOCK;
38 int e12 = ENOMEM;
39 int e13 = EACCES;
40 int e14 = EFAULT;
41 int e16 = EBUSY;
42 int e17 = EEXIST;
43 int e18 = EXDEV;
44 int e19 = ENODEV;
45 int e20 = ENOTDIR;
46 int e21 = EISDIR;
47 int e22 = EINVAL;
48 int e23 = ENFILE;
49 int e24 = EMFILE;
50 int e25 = ENOTTY;
51 int e26 = ETXTBSY;
52 int e27 = EFBIG;
53 int e28 = ENOSPC;
54 int e29 = ESPIPE;
55 int e30 = EROFS;
56 int e31 = EMLINK;
57 int e32 = EPIPE;
58 int e33 = EDOM;
59 int e34 = ERANGE;
60 int e35 = EDEADLK;
61 int e36 = ENAMETOOLONG;
62 int e37 = ENOLCK;
63 int e38 = ENOSYS;
64 int e39 = ENOTEMPTY;
65 int e40 = ELOOP;
66 int e42 = ENOMSG;
67 int e43 = EIDRM;
68 int e67 = ENOLINK;
69 int e71 = EPROTO;
70 int e72 = EMULTIHOP;
71 int e74 = EBADMSG;
72 int e75 = EOVERFLOW;
73 int e84 = EILSEQ;
74 int e88 = ENOTSOCK;
75 int e89 = EDESTADDRREQ;
76 int e90 = EMSGSIZE;
77 int e91 = EPROTOTYPE;
78 int e92 = ENOPROTOOPT;
79 int e93 = EPROTONOSUPPORT;
80 int e95 = EOPNOTSUPP;
81 int e95a = ENOTSUP;
82 int e97 = EAFNOSUPPORT;
83 int e98 = EADDRINUSE;
84 int e99 = EADDRNOTAVAIL;
85 int e100 = ENETDOWN;
86 int e101 = ENETUNREACH;
87 int e102 = ENETRESET;
88 int e103 = ECONNABORTED;
89 int e104 = ECONNRESET;
90 int e105 = ENOBUFS;
91 int e106 = EISCONN;
92 int e107 = ENOTCONN;
93 int e110 = ETIMEDOUT;
94 int e111 = ECONNREFUSED;
95 int e113 = EHOSTUNREACH;
96 int e114 = EALREADY;
97 int e115 = EINPROGRESS;
98 int e116 = ESTALE;
99 int e122 = EDQUOT;
100 int e125 = ECANCELED;
101 int e130 = EOWNERDEAD;
102 int e131 = ENOTRECOVERABLE;
103 
104 /* Don't verify that these errno values are all different, except for possibly
105    EWOULDBLOCK == EAGAIN.  Even Linux/x86 does not pass this check: it has
106    ENOTSUP == EOPNOTSUPP.  */
107 
108 int
main()109 main ()
110 {
111   /* Verify that errno can be assigned.  */
112   errno = EOVERFLOW;
113 
114   /* snprintf() callers want to distinguish EINVAL and EOVERFLOW.  */
115   if (errno == EINVAL)
116     return 1;
117 
118   return 0;
119 }
120