stdio-common/bug4.c

   1 #ifdef _LIBC
   2 #include <ansidecl.h>
   3 #endif
   4 #include <stdio.h>
   5 #include <unistd.h>
   6 #include <string.h>
   7
   8 int stdio_block_read = 1, stdio_block_write = 1;
   9
  10 int
  11 DEFUN(main, (argc, argv),
  12       int argc AND char **argv)
  13 {
  14   FILE *f;
  15   int i;
  16   char buffer[31];
  17
  18   while ((i = getopt (argc, argv, "rw")) != EOF)
  19     switch (i)
  20       {
  21       case 'r':
  22         stdio_block_read = 0;
  23         break;
  24       case 'w':
  25         stdio_block_write = 0;
  26         break;
  27       }
  28
  29   f = fopen("/tmp/bugtest", "w+");
  30   for (i=0; i<9000; i++) {
  31     putc('x', f);
  32   }
  33   fseek(f, 8180L, 0);
  34   fwrite("Where does this text come from?", 1, 31, f);
  35   fseek(f, 8180L, 0);
  36   fread(buffer, 1, 31, f);
  37   fwrite(buffer, 1, 31, stdout);
  38   fclose(f);
  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 }