Delphi / Object Pascal · Exception
What does ERangeError Exception mean in Delphi / Object Pascal?
A descendant of EIntError, raised when an integer expression's value can't fit the declared range of the type it's being assigned to - assigning 300 to a Byte, or an array or string index outside its bounds - under $R+ range checking.
A descendant of EIntError, raised when an integer expression's value can't fit the declared range of the type it's being assigned to - assigning 300 to a Byte, or an array or string index outside its bounds - under $R+ range checking.
Compile with range checking enabled during development to catch this early, widen the target type or clamp the value if it can legitimately exceed range, and validate array/string indices before use rather than trusting external input.