[PATCH] Update COND_EXPR section of c-tree.texi

[Nathan Sidwell]

Richard Henderson wrote:

> 
> Is this really necessary?  As a front-end thing, maybe, but it
> would seem that the best way to handle this is to use
> 
> 	(i >= 0 ? i : (abort(), 0))
FE's must canonicalize 'cond ?: false' after all ...

nathan