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f7dc084799
In PR review for a different issue, the question of what happens if we hit overflow for the imageid serial was hit. This feels pretty unlikely; if I did the math right, it'd require opening an average of 136 images per second to overflow it in a year. Nevertheless, in practice what we're sending on the wire is just a JSON number, and if we extend this to the "max safe JSON number" of 2^53, it'd take 285,616,414 images per second to overflow in a year, going from implausible to probably impossible. With a bit more work of course, we could make this a sparse mapping and reuse freed numbers, but eh. Signed-off-by: Colin Walters <walters@verbum.org>