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       1                 :            : /* Test of fwrite() function.
       2                 :            :    Copyright (C) 2011-2012 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                 :            : #include <config.h>
      18                 :            : 
      19                 :            : #include <stdio.h>
      20                 :            : 
      21                 :            : #include "signature.h"
      22                 :            : SIGNATURE_CHECK (fwrite, size_t, (const void *, size_t, size_t, FILE *));
      23                 :            : 
      24                 :            : #include <errno.h>
      25                 :            : #include <fcntl.h>
      26                 :            : #include <unistd.h>
      27                 :            : 
      28                 :            : #include "msvc-inval.h"
      29                 :            : 
      30                 :            : #include "macros.h"
      31                 :            : 
      32                 :            : int
      33                 :          1 : main (int argc, char **argv)
      34                 :            : {
      35                 :          1 :   const char *filename = "test-fwrite.txt";
      36                 :            : 
      37                 :            :   /* We don't have an fwrite() function that installs an invalid parameter
      38                 :            :      handler so far.  So install that handler here, explicitly.  */
      39                 :            : #if HAVE_MSVC_INVALID_PARAMETER_HANDLER \
      40                 :            :     && MSVC_INVALID_PARAMETER_HANDLING == DEFAULT_HANDLING
      41                 :            :   gl_msvc_inval_ensure_handler ();
      42                 :            : #endif
      43                 :            : 
      44                 :            :   /* Test that fwrite() on an unbuffered stream sets errno if someone else
      45                 :            :      closes the stream fd behind the back of stdio.  */
      46                 :            :   {
      47                 :          1 :     FILE *fp = fopen (filename, "w");
      48                 :          1 :     char buf[5] = "world";
      49         [ -  + ]:          1 :     ASSERT (fp != NULL);
      50                 :          1 :     setvbuf (fp, NULL, _IONBF, 0);
      51         [ -  + ]:          1 :     ASSERT (close (fileno (fp)) == 0);
      52                 :          1 :     errno = 0;
      53         [ -  + ]:          1 :     ASSERT (fwrite (buf, 1, sizeof (buf), fp) == 0);
      54         [ -  + ]:          1 :     ASSERT (errno == EBADF);
      55         [ -  + ]:          1 :     ASSERT (ferror (fp));
      56                 :          1 :     fclose (fp);
      57                 :            :   }
      58                 :            : 
      59                 :            :   /* Test that fwrite() on an unbuffered stream sets errno if the stream
      60                 :            :      was constructed with an invalid file descriptor.  */
      61                 :            :   {
      62                 :          1 :     FILE *fp = fdopen (-1, "w");
      63         [ -  + ]:          1 :     if (fp != NULL)
      64                 :            :       {
      65                 :          0 :         char buf[5] = "world";
      66                 :          0 :         setvbuf (fp, NULL, _IONBF, 0);
      67                 :          0 :         errno = 0;
      68         [ #  # ]:          0 :         ASSERT (fwrite (buf, 1, sizeof (buf), fp) == 0);
      69         [ #  # ]:          0 :         ASSERT (errno == EBADF);
      70         [ #  # ]:          0 :         ASSERT (ferror (fp));
      71                 :          0 :         fclose (fp);
      72                 :            :       }
      73                 :            :   }
      74                 :            :   {
      75                 :          1 :     FILE *fp = fdopen (99, "w");
      76         [ -  + ]:          1 :     if (fp != NULL)
      77                 :            :       {
      78                 :          0 :         char buf[5] = "world";
      79                 :          0 :         setvbuf (fp, NULL, _IONBF, 0);
      80                 :          0 :         errno = 0;
      81         [ #  # ]:          0 :         ASSERT (fwrite (buf, 1, sizeof (buf), fp) == 0);
      82         [ #  # ]:          0 :         ASSERT (errno == EBADF);
      83         [ #  # ]:          0 :         ASSERT (ferror (fp));
      84                 :          0 :         fclose (fp);
      85                 :            :       }
      86                 :            :   }
      87                 :            : 
      88                 :            :   /* Clean up.  */
      89                 :          1 :   unlink (filename);
      90                 :            : 
      91                 :          1 :   return 0;
      92                 :            : }