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References: <bug-27768-1771@http.gcc.gnu.org/bugzilla/>
Subject: [Bug tree-optimization/27768] [4.2 regression] wrong-code with vectors
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------- Comment #2 from pinskia at gcc dot gnu dot org  2006-05-28 20:47 -------
Something is removing the store to _M_start.

  this_252 = (struct _Vector_base<B*,std::allocator<B*> > *) &b;
  this_253 = this_252;
  #   VUSE <SMT.84_402>;
  D.13530_256 = this_252->_M_impl._M_start;


I think the cast there is causing the problem.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27768