[fpc-pascal] Question: range checking for string indexing

[Tom Verhoeff]

Can someone confirm what range checking FreePascal does (if enabled)
when indexing a string.  I imagine shortstrings and ansistrings are
handled differently, but cannot find this in the documentation.

It looks like the following:

  String Type     Range Checked for s[i]
  -----------     ----------------------
  s: ShortString  0 <= i <= 255
  s: AnsiString   1 <= i <= Length(s)

I am surprised that for ShortString, the range is not
also 1 <= i <= Length(s).

IIRC Turbo Pascal only allowed you to access s[0] when range checking
was off, and similarly for s[i] with i > Length(s).

Thanks,

	Tom
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