[Bug libstdc++/29286] [4.0/4.1/4.2/4.3 Regression] placement new does not change the dynamic type as it should

[ian at airs dot com]

------- Comment #76 from ian at airs dot com  2007-05-16 18:01 -------
I don't believe that the C++ standards writers really meant to eliminate TBAA. 
And that is the inevitable consequence of the dynamic memory type approach if
you are allowed to change the dynamic type in a function.

If we really want to adopt that approach, then the simple fix is for the C++
frontend to set flag_strict_aliasing to 0.  But I don't think we want to do
that.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29286