Re: [PATCH 1/3] Fix x + y < x overflow checks

On Thu, Jan 24, 2013 at 6:36 AM, Xi Wang <xi.wang@gmail.com> wrote:
> icc optimizes away the overflow check x + y < x (y > 0), because
> signed integer overflow is undefined behavior in C.  Instead, use
> a safe precondition test x > INT_MAX - y.


I should mention gcc 4.7 does the same, and it emits a warning.