test-errno.c

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00001 /* Test of <errno.h> substitute.
00002    Copyright (C) 2008 Free Software Foundation, Inc.
00003 
00004    This program is free software: you can redistribute it and/or modify
00005    it under the terms of the GNU General Public License as published by
00006    the Free Software Foundation; either version 3 of the License, or
00007    (at your option) any later version.
00008 
00009    This program is distributed in the hope that it will be useful,
00010    but WITHOUT ANY WARRANTY; without even the implied warranty of
00011    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00012    GNU General Public License for more details.
00013 
00014    You should have received a copy of the GNU General Public License
00015    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
00016 
00017 /* Written by Bruno Haible <bruno@clisp.org>, 2008.  */
00018 
00019 #include <config.h>
00020 
00021 #include <errno.h>
00022 
00023 /* Verify that the POSIX mandated errno values exist and can be used as
00024    initializers outside of a function.
00025    The variable names happen to match the Linux/x86 error numbers.  */
00026 int e1 = EPERM;
00027 int e2 = ENOENT;
00028 int e3 = ESRCH;
00029 int e4 = EINTR;
00030 int e5 = EIO;
00031 int e6 = ENXIO;
00032 int e7 = E2BIG;
00033 int e8 = ENOEXEC;
00034 int e9 = EBADF;
00035 int e10 = ECHILD;
00036 int e11 = EAGAIN;
00037 int e11a = EWOULDBLOCK;
00038 int e12 = ENOMEM;
00039 int e13 = EACCES;
00040 int e14 = EFAULT;
00041 int e16 = EBUSY;
00042 int e17 = EEXIST;
00043 int e18 = EXDEV;
00044 int e19 = ENODEV;
00045 int e20 = ENOTDIR;
00046 int e21 = EISDIR;
00047 int e22 = EINVAL;
00048 int e23 = ENFILE;
00049 int e24 = EMFILE;
00050 int e25 = ENOTTY;
00051 int e26 = ETXTBSY;
00052 int e27 = EFBIG;
00053 int e28 = ENOSPC;
00054 int e29 = ESPIPE;
00055 int e30 = EROFS;
00056 int e31 = EMLINK;
00057 int e32 = EPIPE;
00058 int e33 = EDOM;
00059 int e34 = ERANGE;
00060 int e35 = EDEADLK;
00061 int e36 = ENAMETOOLONG;
00062 int e37 = ENOLCK;
00063 int e38 = ENOSYS;
00064 int e39 = ENOTEMPTY;
00065 int e40 = ELOOP;
00066 int e42 = ENOMSG;
00067 int e43 = EIDRM;
00068 int e67 = ENOLINK;
00069 int e71 = EPROTO;
00070 int e72 = EMULTIHOP;
00071 int e74 = EBADMSG;
00072 int e75 = EOVERFLOW;
00073 int e84 = EILSEQ;
00074 int e88 = ENOTSOCK;
00075 int e89 = EDESTADDRREQ;
00076 int e90 = EMSGSIZE;
00077 int e91 = EPROTOTYPE;
00078 int e92 = ENOPROTOOPT;
00079 int e93 = EPROTONOSUPPORT;
00080 int e95 = EOPNOTSUPP;
00081 int e95a = ENOTSUP;
00082 int e97 = EAFNOSUPPORT;
00083 int e98 = EADDRINUSE;
00084 int e99 = EADDRNOTAVAIL;
00085 int e100 = ENETDOWN;
00086 int e101 = ENETUNREACH;
00087 int e102 = ENETRESET;
00088 int e103 = ECONNABORTED;
00089 int e104 = ECONNRESET;
00090 int e105 = ENOBUFS;
00091 int e106 = EISCONN;
00092 int e107 = ENOTCONN;
00093 int e110 = ETIMEDOUT;
00094 int e111 = ECONNREFUSED;
00095 int e113 = EHOSTUNREACH;
00096 int e114 = EALREADY;
00097 int e115 = EINPROGRESS;
00098 int e116 = ESTALE;
00099 int e122 = EDQUOT;
00100 int e125 = ECANCELED;
00101 
00102 /* Don't verify that these errno values are all different, except for possibly
00103    EWOULDBLOCK == EAGAIN.  Even Linux/x86 does not pass this check: it has
00104    ENOTSUP == EOPNOTSUPP.  */
00105 
00106 int
00107 main ()
00108 {
00109   /* Verify that errno can be assigned.  */
00110   errno = EOVERFLOW;
00111 
00112   /* snprintf() callers want to distinguish EINVAL and EOVERFLOW.  */
00113   if (errno == EINVAL)
00114     return 1;
00115 
00116   return 0;
00117 }