On Aug 4, 1:05 pm, Scott Bale <drbceb-t...@yahoo.com> wrote:
> I once got "bit by byte" in the following loop:
>
> for(byte a=Byte.MIN_VALUE; a<=Byte.MAX_VALUE; a++) {
> for(byte b=Byte.MIN_VALUE; b<=Byte.MAX_VALUE; b++) {
> byte[] test = new byte[] { a, b};
> //do something...
> }
>
> }
>
> When I ran this, CPU shot to 100% and I had to take down Eclipse with
> extreme prejudice. Can you spot the problem?
>
> The problem is, neither of the loops can terminate. Neither for
> condition will ever become false and cause the loop to terminate,
> because neither a nor b can ever grow larger than Byte.MAX_VALUE. Duh.
Ouch, that brings back an old memory too. In my case I was using an
int, but casting to a byte (for bit-banging purposes) and failed to
see that my comparison was occurring while in byte form... leading to
exactly this problem. I thought I was safe by using an int, but
obviously incompetence can overcome any level of protection. (I mean
mine here, not yours!)
Paul
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