libio/tst-setvbuf1.c

   1 /* Derived from the test case in BZ #2337.  */
   2 #include <errno.h>
   3 #include <error.h>
   4 #include <fcntl.h>
   5 #include <locale.h>
   6 #include <stdio.h>
   7 #include <stdlib.h>
   8 #include <string.h>
   9 #include <unistd.h>
  10 #include <wchar.h>
  11
  12
  13 static char buf[512] __attribute__ ((aligned (4096)));
  14
  15
  16 static int
  17 do_test (void)
  18 {
  19   setlocale (LC_ALL, "de_DE.UTF-8");
  20
  21   FILE *fp = fdopen (dup (STDOUT_FILENO), "a");
  22   if (fp == NULL)
  23     error (EXIT_FAILURE, errno, "fdopen(,\"a\")");
  24
  25   setvbuf (fp, buf, _IOFBF, sizeof (buf));
  26
  27   /* fwprintf to unbuffered stream.   */
  28   fwprintf (fp, L"hello.\n");
  29
  30   fclose (fp);
  31
  32   /* touch my buffer */
  33   buf[45] = 'a';
  34
  35   return 0;
  36 }
  37
  38 #define TEST_FUNCTION do_test ()
  39 #include "../test-skeleton.c"