gcc/testsuite/gcc.dg/torture/pr79777.c

   1 /* { dg-do compile } */
   2
   3 typedef unsigned short __u16;
   4 #if __SIZEOF_INT__ < 4
   5   __extension__ typedef __UINT32_TYPE__ __u32;
   6   __extension__ typedef __UINT32_TYPE__ u32;
   7 #else
   8   typedef unsigned int __u32;
   9   typedef unsigned int u32;
  10 #endif
  11 typedef unsigned char u8;
  12 typedef __u16 __le16;
  13 typedef __u32 __le32;
  14 typedef u32 secno;
  15 struct bplus_internal_node {
  16     __le32 file_secno;
  17     __le32 down;
  18 };
  19 struct bplus_header {
  20     u8 n_used_nodes;
  21     __le16 first_free;
  22     union {
  23         struct bplus_internal_node internal[0];
  24     }
  25     u;
  26 };
  27
  28 __u16 __fswab16(__u16 val);
  29 __u32 __fswab32(__u32 val);
  30 void hpfs_ea_remove (__u32);
  31
  32 void hpfs_truncate_btree(secno f, int fno, unsigned secs, struct bplus_header *btree)
  33 {
  34   int i, j;
  35   for (i = 0; i < btree->n_used_nodes; i++)
  36     if ((__builtin_constant_p((__u32)(( __u32)(__le32)(btree->u.internal[i].file_secno))) ? ((__u32)( (((__u32)(( __u32)(__le32)(btree->u.internal[i].file_secno)) & (__u32)0x000000ffUL) << 24) | (((__u32)(( __u32)(__le32)(btree->u.internal[i].file_secno)) & (__u32)0x0000ff00UL) << 8) | (((__u32)(( __u32)(__le32)(btree->u.internal[i].file_secno)) & (__u32)0x00ff0000UL) >> 8) | (((__u32)(( __u32)(__le32)(btree->u.internal[i].file_secno)) & (__u32)0xff000000UL) >> 24))) : __fswab32(( __u32)(__le32)(btree->u.internal[i].file_secno))) >= secs) goto f;
  37   return;
  38 f:
  39   for (j = i + 1; j < btree->n_used_nodes; j++)
  40     hpfs_ea_remove((__builtin_constant_p((__u32)(( __u32)(__le32)(btree->u.internal[j].down))) ? ((__u32)( (((__u32)(( __u32)(__le32)(btree->u.internal[j].down)) & (__u32)0x000000ffUL) << 24) | (((__u32)(( __u32)(__le32)(btree->u.internal[j].down)) & (__u32)0x0000ff00UL) << 8) | (((__u32)(( __u32)(__le32)(btree->u.internal[j].down)) & (__u32)0x00ff0000UL) >> 8) | (((__u32)(( __u32)(__le32)(btree->u.internal[j].down)) & (__u32)0xff000000UL) >> 24))) : __fswab32(( __u32)(__le32)(btree->u.internal[j].down))));
  41   btree->n_used_nodes = i + 1;
  42   btree->first_free = (( __le16)(__builtin_constant_p((__u16)((8 + 8 * btree->n_used_nodes))) ? ((__u16)( (((__u16)((8 + 8 * btree->n_used_nodes)) & (__u16)0x00ffU) << 8) | (((__u16)((8 + 8 * btree->n_used_nodes)) & (__u16)0xff00U) >> 8))) : __fswab16((8 + 8 * btree->n_used_nodes))));
  43 }