Re: bug list: assigning negative values to unsigned variables

From: Bernd Petrovitsch
Date: Wed Jan 27 2010 - 06:39:37 EST

On Mit, 2010-01-27 at 11:57 +0100, Julia Lawall wrote:
> On Wed, 27 Jan 2010, Dan Carpenter wrote:
> > Fixing the places which assign negative values to unsigned variables is a good janitor task.
> I had the impression that assignment to -1 was done sometimes as a
> portable way to initialize the variable to 0xffff (for any number of f's).
> So perhaps it is not so trivial to fix.
Any particular reason that ~0U, ~0UL, and ~0ULL shouldn't do the same
(without relying on conversion from signed to unsigned)?

Bernd Petrovitsch Email : bernd@xxxxxxxxxxxxxxxxxxx

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