[Bug tree-optimization/38745] [4.4 Regression] ICE: statement makes a memory store, but has no VDEFS

[pinskia at gcc dot gnu dot org]

------- Comment #11 from pinskia at gcc dot gnu dot org  2009-01-16 22:11 
-------
Semi small testcase:
union u_u16
{
  unsigned short v;
  struct
  {
    unsigned char lo8, hi8;
  } __attribute__ ((__may_alias__)) u;
} __attribute__ ((__may_alias__));
union u_u32
{
  unsigned int v;
  struct
  {
    u_u16 lo16, hi16;
  } u;
} __attribute__ ((__may_alias__));
union u_u64
{
  struct
  {
    u_u32 lo32, hi32;
  } u;
};
struct Record
{
};
long long
UnpackFullKey (Record & rec, const char *&p)
{
  long long c64 = 0;
  (*(u_u16 *) & (*(u_u32 *) & ( *(u_u64*)&c64).u.lo32.v).u.lo16.v).u.hi8 =
    1;
  return c64;
}


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38745