## Integer overflow/underflow

## Official Description

6.7.2.2 It is an error if an integer operation or
function is not performed according to the mathematical rules for integer arithmetic.

## Simplified Description

This appears to mean that it is an
error if integer operations or functions overflow or
underflow. So for example

` maxint+maxint`

should be an error since

` maxint = 2,147,486,647`

but due to integer overflow

` maxint+maxint = -2`

## Error Handling

This error is never reported.