Flipping of more than one bit is possible and probably quite common, but to have bits flip so that always a substraction of 1 comes out is just very unlikely. I did check the other two examples and while one was similar to the case I posted about, the other one was just a flip of the lowest bit.

In reply to Re^4: SUPER delegation fails because class name getting munged (somehow?) by jethro
in thread SUPER delegation fails because class name getting munged (somehow?) by bpphillips

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