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program overflowbug;
{$mode objfpc}{$Q+}
const
zero=0;
one=1;
var
x,y,z: cardinal;
begin
x := 0;
y := one + x;
// the next line sets the carry flag, so a overflow error will be generated
if x>y then;
// here the overflow error will be generated.
// the addition of zero is optimized away, but the check for the carry flag
// is not removed, so it is using the result of the compile in line 17
z := zero + y;
end.
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