[cfe-dev] type-punning warnings for CXXTypeidExpr::child_begin()/child_end()

[Chris Lattner]

On Dec 3, 2008, at 1:28 PM, Ted Kremenek wrote:

> In ExprCXX.cpp I see:
>
> Stmt::child_iterator CXXTypeidExpr::child_begin() {
>   return isTypeOperand() ? child_iterator() : (Stmt**)&Operand;
> }
>
> The expression '(Stmt**)&Operand' leads to type-punning warnings
> during a Release build.  This looks like a real issue to me.  Is this
> safe, or do we need to fix it?  The same warning appears in  
> child_end().

This is a real bug.  "Operand" should be declared as a Stmt*.

-Chris