Integer promotion... what I'm missing? (It's monday...)

[Paolo Invernizzi]

Don Clugston wrote:

> It's a hard one. It would be really painful if equality comparisons 
> between signed & unsigned types was an error; it's almost always OK.
> Comparison of signed/unsigned variables with an unsigned/signed constant 
> is always an error; it would be nice if the compiler detected it.

That was a comparison between an unsigned/signed CONSTANTS, that's the 
mess. They are foldable in that example....

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Paolo