Line data    Source code

       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
     109           1 : main ()
     110             : {
     111             :   /* Verify that errno can be assigned.  */
     112           1 :   errno = EOVERFLOW;
     113             : 
     114             :   /* snprintf() callers want to distinguish EINVAL and EOVERFLOW.  */
     115           1 :   if (errno == EINVAL)
     116           0 :     return 1;
     117             : 
     118           1 :   return 0;
     119             : }