[Bug middle-end/32856] Invalid optimization in the face of aliasing

[felix-gcc at fefe dot de]

------- Comment #4 from felix-gcc at fefe dot de  2007-07-22 23:08 -------
Falk:

  union {
    struct {
      void* unused;
      struct node n;
    } a;
    struct node b;
  } u;

Then &u.a.n.next == &u.b.n.prev;

Artificial?  Sure.  But legal.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32856