[chinabot]

Pascal is type safe and generally catches most errors at compile time, you can still create run-time errors such as indexes outside arrays but these will cause errors not bad return data.

eg I use C a lot and find myself referencing array index [0] a lot, in pascal arrays starts at [1] if not specifically defined so I know this from experience, frustratingly I have a different problem in C which will either return random data or crash if writing.

[kwhitefoot]

Pascal arrays can use any sub-range of an ordinal type as the index. You should define the distinct type of the index instead of using integers then you will get an exception if you attempt to use an out of range index.

[gramie]

I'm pretty sure that FreePascal and Delphi can do run-time bounds checking (it's a compile-time option).

Pascal also avoids buffer overrun errors on strings, because strings are dynamically resized as necessary.

You can also avoid having to free objects if you declare them as implementing a certain Interface (I forget the exact one). They will automatically be freed when the number of references drops to 0.