[cfe-dev] warning with conditional operator and printf, is this a bug ?

[John McCall]

On Nov 3, 2011, at 10:34 PM, David Blaikie wrote:
>> This is a test case, not sure if its a bug with printf.
> 
> I don't believe this is a bug, no.

It's a clear false positive in our format checker.  Promoting an unsigned value to a wider signed type performs a zero-extend, so the distinction between signed and unsigned formats is irrelevant and either %d or %ud should be acceptable.  (The reverse would not be true:  we should still warn about using unsigned formats with promoted signed types).

John.