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I believe there is a comprehensible distinction between "compiler will not assume that signed overflow is undefined behaviour" and "compiler will cause all arithmetic to wrap around."
In any case, I have no plans to continue working on this. I described my work in considerable detail as I did it and the patches have gone through multiple rounds of review. I would be happy to see your concrete proposal.
-fstrict-overflow -fno-strict-overflow -fwrapv
It is really hard to estimate the value of the second dubious (dubious because ill-defined, it seems to try to create a state of undefined definedness) switch compared to the other two possibilities.
Ian
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