fpc Pascal Runtime error 216 before execution ends - Stack Overflow

1 begins 1 2 1 ends 2 begins 1 1 2 3 2 ends 3 begins 1 2 3 ends 4 begins 1 3 4 ends bye Runtime error 216 at $0000000000416644 $0000000000416644 $00000000004138FB $0000000000413740 $0000000000400645 $00000000004145D2 $0000000000400180 ...

stackoverflow.com