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       1                 :            : /* Test of strerror() function.
       2                 :            :    Copyright (C) 2007-2012 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, or (at your option)
       7                 :            :    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 <http://www.gnu.org/licenses/>.  */
      16                 :            : 
      17                 :            : /* Written by Eric Blake <ebb9@byu.net>, 2007.  */
      18                 :            : 
      19                 :            : #include <config.h>
      20                 :            : 
      21                 :            : #include <string.h>
      22                 :            : 
      23                 :            : #include "signature.h"
      24                 :            : SIGNATURE_CHECK (strerror, char *, (int));
      25                 :            : 
      26                 :            : #include <errno.h>
      27                 :            : 
      28                 :            : #include "macros.h"
      29                 :            : 
      30                 :            : int
      31                 :          1 : main (void)
      32                 :            : {
      33                 :            :   char *str;
      34                 :            : 
      35                 :          1 :   errno = 0;
      36                 :          1 :   str = strerror (EACCES);
      37         [ -  + ]:          1 :   ASSERT (str);
      38         [ -  + ]:          1 :   ASSERT (*str);
      39         [ -  + ]:          1 :   ASSERT (errno == 0);
      40                 :            : 
      41                 :          1 :   errno = 0;
      42                 :          1 :   str = strerror (ETIMEDOUT);
      43         [ -  + ]:          1 :   ASSERT (str);
      44         [ -  + ]:          1 :   ASSERT (*str);
      45         [ -  + ]:          1 :   ASSERT (errno == 0);
      46                 :            : 
      47                 :          1 :   errno = 0;
      48                 :          1 :   str = strerror (EOVERFLOW);
      49         [ -  + ]:          1 :   ASSERT (str);
      50         [ -  + ]:          1 :   ASSERT (*str);
      51         [ -  + ]:          1 :   ASSERT (errno == 0);
      52                 :            : 
      53                 :            :   /* POSIX requires strerror (0) to succeed.  Reject use of "Unknown
      54                 :            :      error", but allow "Success", "No error", or even Solaris' "Error
      55                 :            :      0" which are distinct patterns from true out-of-range strings.
      56                 :            :      http://austingroupbugs.net/view.php?id=382  */
      57                 :          1 :   errno = 0;
      58                 :          1 :   str = strerror (0);
      59         [ -  + ]:          1 :   ASSERT (str);
      60         [ -  + ]:          1 :   ASSERT (*str);
      61         [ -  + ]:          1 :   ASSERT (errno == 0);
      62         [ -  + ]:          1 :   ASSERT (strstr (str, "nknown") == NULL);
      63         [ -  + ]:          1 :   ASSERT (strstr (str, "ndefined") == NULL);
      64                 :            : 
      65                 :            :   /* POSIX requires strerror to produce a non-NULL result for all
      66                 :            :      inputs; as an extension, we also guarantee a non-empty result.
      67                 :            :      Reporting EINVAL is optional.  */
      68                 :          1 :   errno = 0;
      69                 :          1 :   str = strerror (-3);
      70         [ -  + ]:          1 :   ASSERT (str);
      71         [ -  + ]:          1 :   ASSERT (*str);
      72 [ -  + ][ #  # ]:          1 :   ASSERT (errno == 0 || errno == EINVAL);
      73                 :            : 
      74                 :          1 :   return 0;
      75                 :            : }