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Niels Lohmann
835a5e6c3a
Comparing kept a thread_local count, a limit and a guard of its own beside the ones copying already had, all three the same thing under a different name. They are gone; the shared nesting_depth_exhausted() and nesting_depth_guard do the work. Also say in compare_leaves what happens to a pair that is an array on one side and an object on the other, since the answer is not obvious from the code: an operator only descends into two values of the same type, so such a pair is told apart by its types alone - unequal, and ordered the way the types are - exactly as it is above the bound. And record what the explicit stack costs: the comparison operators are noexcept and the container comparison this replaces allocated nothing, so running out of memory here ends the process instead of throwing. It takes a value nested past the bound and an exhausted heap to reach, and the same comparison used to exhaust the call stack, but it is a new way to fail. Signed-off-by: Niels Lohmann <mail@nlohmann.me>