[Bug tree-optimization/21407] [4.1 Regression] wrong code with downcast in C++

[giovannibajo at libero dot it]

------- Additional Comments From giovannibajo at libero dot it  2005-05-10 
16:01 -------
In fact, the salias dump for the C++ testcase says:

---------------------------------------------------------------
;; Function void bar() (_Z3barv)

structure field tag SFT.2 created for var sb offset 0 size 32
void bar() ()
{
  struct B sb;

<bb 0>:
  foo (&sb.D.1580);
  return;

}
---------------------------------------------------------------

so it looks like the substructure *is* at offset zero.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21407