[fpc-pascal] RunError(215) occurs only in win 64 bit, not win 32 bit

Marco van de Voort marcov at stack.nl
Wed Jan 24 12:59:09 CET 2018

In our previous episode, Dennis said:
> When I compiled the following simply programs using Lazarus 1.8  fpc 
> 3.0.4 Win 64, run it, it will throws RunError(215) Arithmetic overflow 
> error.

Which seems correct. The expression to compare with is entirely longword and
it gets negative (5+5) - (10+10).

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