After thinking more about the method below, I have some questions.
method hashCode returns int
if chars=null then chars=layout()
if chars.length<14 then over=(chars.length+1)%2
else over=7
/* Hash the first and last OVER characters */
hash=0
loop i=0 to over-1
hash=hash*7+int(chars[i])*2+int(chars[chars.length-i-1])
end i
return hash
It returns a Java Integer in the range from -2,147,483,648 to +2,147,483,647.
But in this case, the math inside the method is done with the Rexx type.
Rexx does not have any problem with the math and large numbers,
so to it, there was never a error when the value exceeded 2,147,483,647.
A hash was always returned and no errors shown.
When Java seen the number exceeded the integer limits in the return value did it?
1) Go to the parent class and use that method
2) Did the JVM return some number on its stack
Also, is there a way to catch this type of bug before hand?
Locked
