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   const char filename[] = "/tmp/bugtest";
  18
  19   while ((i = getopt (argc, argv, "rw")) != EOF)
  20     switch (i)
  21       {
  22       case 'r':
  23         stdio_block_read = 0;
  24         break;
  25       case 'w':
  26         stdio_block_write = 0;
  27         break;
  28       }
  29
  30   f = fopen(filename, "w+");
  31   for (i=0; i<9000; i++) {
  32     putc('x', f);
  33   }
  34   fseek(f, 8180L, 0);
  35   fwrite("Where does this text come from?", 1, 31, f);
  36   fseek(f, 8180L, 0);
  37   fread(buffer, 1, 31, f);
  38   fwrite(buffer, 1, 31, stdout);
  39   fclose(f);
  40   remove(filename);
  41
  42   if (!memcmp (buffer, "Where does this text come from?", 31))
  43     {
  44       puts ("\nTest succeeded.");
  45       return 0;
  46     }
  47   else
  48     {
  49       puts ("\nTest FAILED!");
  50       return 1;
  51     }
  52 }