You may be familiar with integer overflow, but what you may not be familiar with is how gcc handles signed integer overflow.First let's look at the standard, for unsigned integer, the standard says :A computation involving unsigned operands can never overflow, because a result that cannot be represented by the resulting unsigned integer type is reduced modulo the number that is one greater than the largest value that can be represented by the resulting type.In other words, unsigned integer overflow will be wrapped so that it will be still in the range of an unsigned integer.For signed integer,...