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If you require comments to try to help programmers follow a confused set of return value conventions, I submit to you that comments aren't the real solution, since they're minimally helpful in addressing the real problem.

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THIS^

Incidentally, would this bug have been flagged by a compiler warning?

I don't think so. The compiler would have no idea that 1 and 0 were not the 1 and 0 that the human was expecting, surely?

In C, no. Even an enum type in C can be compared with integers without any warnings.

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