gcc/testsuite/gcc.c-torture/execute/20001124-1.c

   1
   2 struct inode {
   3         long long               i_size;
   4         struct super_block      *i_sb;
   5 };
   6
   7 struct file {
   8         long long               f_pos;
   9 };
  10
  11 struct super_block {
  12         int                     s_blocksize;
  13         unsigned char           s_blocksize_bits;
  14         int                     s_hs;
  15 };
  16
  17 static char *
  18 isofs_bread(unsigned int block)
  19 {
  20         if (block)
  21           abort ();
  22         exit(0);
  23 }
  24
  25 static int
  26 do_isofs_readdir(struct inode *inode, struct file *filp)
  27 {
  28         int bufsize = inode->i_sb->s_blocksize;
  29         unsigned char bufbits = inode->i_sb->s_blocksize_bits;
  30         unsigned int block, offset;
  31         char *bh = 0;
  32         int hs;
  33
  34         if (filp->f_pos >= inode->i_size)
  35                 return 0;
  36
  37         offset = filp->f_pos & (bufsize - 1);
  38         block = filp->f_pos >> bufbits;
  39         hs = inode->i_sb->s_hs;
  40
  41         while (filp->f_pos < inode->i_size) {
  42                 if (!bh)
  43                         bh = isofs_bread(block);
  44
  45                 hs += block << bufbits;
  46
  47                 if (hs == 0)
  48                         filp->f_pos++;
  49
  50                 if (offset >= bufsize)
  51                         offset &= bufsize - 1;
  52
  53                 if (*bh)
  54                         filp->f_pos++;
  55
  56                 filp->f_pos++;
  57         }
  58         return 0;
  59 }
  60
  61 struct super_block s;
  62 struct inode i;
  63 struct file f;
  64
  65 int
  66 main(int argc, char **argv)
  67 {
  68         s.s_blocksize = 512;
  69         s.s_blocksize_bits = 9;
  70         i.i_size = 2048;
  71         i.i_sb = &s;
  72         f.f_pos = 0;
  73
  74         do_isofs_readdir(&i,&f);
  75         abort ();
  76 }