kc3-lang/gnulib/tests/test-fwrite.c

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• Hash : 10302c2e
  Author :
  Date : 2013-01-22T09:43:22
  

  tests: don't assume fd 99 is closed
  
  * tests/test-accept.c, tests/test-accept4.c, tests/test-bind.c:
  * tests/test-close.c, tests/test-connect.c, tests/test-dprintf.c:
  * tests/test-dup.c, tests/test-dup2.c, tests/test-faccessat.c:
  * tests/test-fchdir.c, tests/test-fchmod.c, tests/test-fchmodat.c:
  * tests/test-fchown.c, tests/test-fchownat.c, tests/test-fclose.c:
  * tests/test-fdatasync.c, tests/test-fdopen.c, tests/test-fdopendir.c:
  * tests/test-fflush.c, tests/test-fgetc.c, tests/test-fputc.c:
  * tests/test-fread.c, tests/test-freopen.c, tests/test-fseeko4.c:
  * tests/test-fstat.c, tests/test-fstatat.c, tests/test-fsync.c:
  * tests/test-ftello4.c, tests/test-ftruncate.c, tests/test-futimens.h:
  * tests/test-fwrite.c, tests/test-getpeername.c:
  * tests/test-getsockname.c, tests/test-getsockopt.c:
  * tests/test-grantpt.c, tests/test-ioctl.c, tests/test-isatty.c:
  * tests/test-linkat.c, tests/test-listen.c, tests/test-lseek.c:
  * tests/test-mkdirat.c, tests/test-mkfifoat.c, tests/test-openat.c:
  * tests/test-pread.c, tests/test-pwrite.c, tests/test-read.c:
  * tests/test-readlinkat.c, tests/test-recv.c, tests/test-recvfrom.c:
  * tests/test-renameat.c, tests/test-select.h, tests/test-send.c:
  * tests/test-sendto.c, tests/test-setsockopt.c, tests/test-shutdown.c:
  * tests/test-symlinkat.c, tests/test-ttyname_r.c:
  * tests/test-unlinkat.c, tests/test-unlockpt.c:
  * tests/test-utimensat.c, tests/test-vdprintf.c, tests/test-write.c:
  Close file descriptor 99, instead of assuming it's already closed.
  

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• tests/test-fwrite.c

• /* Test of fwrite() function.
     Copyright (C) 2011-2013 Free Software Foundation, Inc.
  
     This program is free software; you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by
     the Free Software Foundation; either version 3, or (at your option)
     any later version.
  
     This program is distributed in the hope that it will be useful,
     but WITHOUT ANY WARRANTY; without even the implied warranty of
     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     GNU General Public License for more details.
  
     You should have received a copy of the GNU General Public License
     along with this program; if not, see <http://www.gnu.org/licenses/>.  */
  
  #include <config.h>
  
  #include <stdio.h>
  
  #include "signature.h"
  SIGNATURE_CHECK (fwrite, size_t, (const void *, size_t, size_t, FILE *));
  
  #include <errno.h>
  #include <fcntl.h>
  #include <unistd.h>
  
  #include "msvc-inval.h"
  
  #include "macros.h"
  
  int
  main (int argc, char **argv)
  {
    const char *filename = "test-fwrite.txt";
  
    /* We don't have an fwrite() function that installs an invalid parameter
       handler so far.  So install that handler here, explicitly.  */
  #if HAVE_MSVC_INVALID_PARAMETER_HANDLER \
      && MSVC_INVALID_PARAMETER_HANDLING == DEFAULT_HANDLING
    gl_msvc_inval_ensure_handler ();
  #endif
  
    /* Test that fwrite() on an unbuffered stream sets errno if someone else
       closes the stream fd behind the back of stdio.  */
    {
      FILE *fp = fopen (filename, "w");
      char buf[5] = "world";
      ASSERT (fp != NULL);
      setvbuf (fp, NULL, _IONBF, 0);
      ASSERT (close (fileno (fp)) == 0);
      errno = 0;
      ASSERT (fwrite (buf, 1, sizeof (buf), fp) == 0);
      ASSERT (errno == EBADF);
      ASSERT (ferror (fp));
      fclose (fp);
    }
  
    /* Test that fwrite() on an unbuffered stream sets errno if the stream
       was constructed with an invalid file descriptor.  */
    {
      FILE *fp = fdopen (-1, "w");
      if (fp != NULL)
        {
          char buf[5] = "world";
          setvbuf (fp, NULL, _IONBF, 0);
          errno = 0;
          ASSERT (fwrite (buf, 1, sizeof (buf), fp) == 0);
          ASSERT (errno == EBADF);
          ASSERT (ferror (fp));
          fclose (fp);
        }
    }
    {
      FILE *fp;
      close (99);
      fp = fdopen (99, "w");
      if (fp != NULL)
        {
          char buf[5] = "world";
          setvbuf (fp, NULL, _IONBF, 0);
          errno = 0;
          ASSERT (fwrite (buf, 1, sizeof (buf), fp) == 0);
          ASSERT (errno == EBADF);
          ASSERT (ferror (fp));
          fclose (fp);
        }
    }
  
    /* Clean up.  */
    unlink (filename);
  
    return 0;
  }
  

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