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// PR optimization/11646

// Origin: 

// This used to fail because the compiler inadvertently cleared

// the EDGE_ABNORMAL flag on a EDGE_EH edge and didn't delete

// unreachable blocks after CSE.

// { dg-do compile }

// { dg-options "-O -fgcse -fnon-call-exceptions" }

struct C

{

  int i;

};

struct allocator

{

  ~allocator() throw() {}

};

struct _Vector_alloc_base

{

  _Vector_alloc_base(const allocator& __a) {}

  allocator _M_data_allocator;

  struct C *_M_start, *_M_end_of_storage;

  void _M_deallocate(struct C* __p, unsigned int __n) {}

};

struct _Vector_base : _Vector_alloc_base

{

  _Vector_base(const allocator& __a) : _Vector_alloc_base(__a) { }

  ~_Vector_base() { _M_deallocate(0, _M_end_of_storage - _M_start); }

};

struct vector : _Vector_base

{

  vector(const allocator& __a = allocator()) : _Vector_base(__a) {}

  struct C& operator[](unsigned int __n) { return *_M_start; }

};

struct A

{

  float l() const;

  A operator-(const A &) const;

  const A& operator=(float) const;

};

struct B

{

  float d();

};

float f(const A& a, B& b)

{

  vector vc;

  int index = vc[0].i;

  A aa;

  float d = (aa - a).l();

  if (d > b.d()) aa = 0;

    return b.d();

}