Subversion Repositories openrisc_2011-10-31

// PR c++/27768

// Alias grouping was losing some may_aliases, causing us to think

// the store to w.p was dead.

// { dg-do run }

// { dg-options "-O2" }

int N = 1;

struct VA

{

  int *p, *q, *r;

  VA() : p(), q() {}

  VA(const VA&) : p(), q() {}

  ~VA() { if (p) --N; }

};

inline void foo(VA, VA, VA) {}

struct VB

{

  VA va;

  VB() {}

  VB(const VB&)

  {

    va.p = new int(va.q - va.p);

    va.r = va.p + (va.q - va.p);

    foo(va, va, va);

  }

};

struct VC : VB { char c; };

struct V : VC {};

struct WA

{

  struct X {};

  X **p, **q, **r;

  WA() : p() {}

  ~WA() { if (p) --N; }

};

struct W : WA {};

int main()

{

  {

    V v, u(v);

    W w;

  }

  return N;

}