[Bug middle-end/80346] pessimistic stringop-overflow

[bonzini at gnu dot org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80346

--- Comment #14 from Paolo Bonzini <bonzini at gnu dot org> ---
And also treat it as undefined behavior and go straight to the else... 
kidding, but not entirely!).

The main issue is that here we _are_ testing the overflow behavior of the
function, so we cannot pass sz for the last argument.  I guess we can add a
pragma or compiler flag to hide the warning.  Thanks!