GitLab

The condition in Item_func_round::fix_arg_int() to decide whether:
- we can preserve the data type of args[0] versus
- the result can go outside of the args[0] data type
was wrong.

The data type of the first argument can be preserved in these cases:
- TRUNCATE(x, n)
- ROUND(x, n>=0)

Fixing the condition accordingly.