stdio-common/bug4.c

   1 #include <stdio.h>
   2 #include <unistd.h>
   3 #include <string.h>
   4
   5 #include <support/xstdio.h>
   6
   7 int stdio_block_read = 1, stdio_block_write = 1;
   8
   9 int
  10 main (int argc, char *argv[])
  11 {
  12   FILE *f;
  13   int i;
  14   char buffer[31];
  15   const char filename[] = OBJPFX "bug4.test";
  16
  17   while ((i = getopt (argc, argv, "rw")) != -1)
  18     switch (i)
  19       {
  20       case 'r':
  21         stdio_block_read = 0;
  22         break;
  23       case 'w':
  24         stdio_block_write = 0;
  25         break;
  26       }
  27
  28   f = fopen (filename, "w+");
  29   for (i = 0; i < 9000; ++i)
  30     putc('x', f);
  31
  32   fseek (f, 8180L, 0);
  33   fwrite ("Where does this text come from?", 1, 31, f);
  34   fseek (f, 8180L, 0);
  35   xfread (buffer, 1, 31, f);
  36   fwrite (buffer, 1, 31, stdout);
  37   fclose (f);
  38   remove (filename);
  39
  40   if (!memcmp (buffer, "Where does this text come from?", 31))
  41     {
  42       puts ("\nTest succeeded.");
  43       return 0;
  44     }
  45   else
  46     {
  47       puts ("\nTest FAILED!");
  48       return 1;
  49     }
  50 }