20070725-1.c

来自「用于进行gcc测试」· C语言 代码 · 共 65 行

/* This used to fail due to a ifcombine problem wrecking 64bit
   checks.  Fixed with rev. 126876.  */
/* { dg-do run } */
/* { dg-options "-O1" } */

struct tree_base
{
  unsigned code:16;

  unsigned side_effects_flag:1;
  unsigned constant_flag:1;
  unsigned addressable_flag:1;
  unsigned volatile_flag:1;
  unsigned readonly_flag:1;
  unsigned unsigned_flag:1;
  unsigned asm_written_flag:1;
  unsigned nowarning_flag:1;

  unsigned used_flag:1;
  unsigned nothrow_flag:1;
  unsigned static_flag:1;
  unsigned public_flag:1;
  unsigned private_flag:1;
  unsigned protected_flag:1;
  unsigned deprecated_flag:1;
  unsigned invariant_flag:1;

  unsigned lang_flag_0:1;
  unsigned lang_flag_1:1;
  unsigned lang_flag_2:1;
  unsigned lang_flag_3:1;
  unsigned lang_flag_4:1;
  unsigned lang_flag_5:1;
  unsigned lang_flag_6:1;
  unsigned visited:1;

  unsigned spare1:16;
  unsigned spare2:8;
  unsigned long  a;
};

int
foo (struct tree_base *rhs)
{
  if (({const struct tree_base* __t = (rhs);  __t;})->readonly_flag
      && (rhs)->static_flag)
    return 1;

  return 0;
}

extern void abort (void);

int
main ()
{
  struct tree_base t;

  t.readonly_flag = t.static_flag = 0;
  if (foo (&t))
    abort ();

  return 0;
}