'If' expects a condition so finding an assignment may be a red flag even if an assignment has a return value in the spec, which makes the construct valid.
On the other hand ^ expects integers so 2^32 is exactly what is expected.
Most the replies I saw here try to second-guess or claim that ^ should be used in a specific way. Not so, ^ is just doing XOR of two integers.
Apparently, I am having an incorrect opinion, though, so I will self-censor and remain silent.