Strange enum type conversion

[Richard Earnshaw]

On Thu, 2009-12-03 at 14:40 +0000, Richard Earnshaw wrote:

> > 0xFFFFFFFF (which is an unsigned int)
> 
> wrong.  That's an int with a bit pattern that's all 1's.  On a two's
> complement machine with 32-bit ints that's equivalent to -1.

Forget that.  I'm talking nonsense.  An int is signed only if it's
smaller than INT_MAX in magnitude.  Otherwise it's unsigned (hence
#defining INT_MIN as (-INT_MAX - 1)

R.