Comparing D vs C++ (wierd behaviour of C++)

[Ecstatic Coder]

> He gets different results with and without optimization because 
> without optimization the result of the calculation is spilled 
> to the i unsigned int and then reloaded for the print call. 
> This save and reload truncated the value to its real value. In 
> the optimized version, the compiler removed the spill and the 
> overflowed value contained in the register is printed as is.

Btw you are actually confirming what I said.

if (i != 0xFFFFFFFF) ...

In the optimized version, when the 64 bits "i" value is compared 
to a 32 bits constant, the test fails...

Proof that the value is stored in a **64** bits register, not 
32...