ISO Pascal reference manual

*Execution error -- significance lost
Appendix C
The trigonometric functions are most accurate when their arguments are in
the primary range ( about -PI..PI ). The further the argument gets from this
range the less accurate is the result. The error indicates that the argument
was too far from the primary range that the result is likely to be so
inaccurate as to be meaningless.
PROGRAM error(output);
VAR s, a : real;
n : integer;
BEGIN
a := 1;
FOR n := 1 TO 1000 DO BEGIN
a := 2*a;
s := SIN(a); (should fail eventually}
END;
writeln('Error not detected');
END.
*Execution error -- not enough store
The program has requested more working memory than is available. The
common causes for this error are either declaring enormous arrays or
calling procedures or functions recursively without a suitable termination
condition. Note that arrays of arrays can use up space very quickly.
PROGRAM error(output);
[Note that this program could just blow up if}
(the compiler's check for running out of store}
(fails to catch the error}
PROCEDURE recurse(n : integer);
BEGIN
IF n > 0 THEN recurse(n+1);
END;
BEGIN
recurse(1); [this will never come back}
END.
Pascal Issue 1 105