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82d3058539
This fixes an potential overflow which existed prior to this patchset. If CuckooCache::cache<Element, Hash>::setup_bytes is called with a `size_t bytes` which, when divided by sizeof(Element), does not fit into an uint32_t, the implicit conversion to uint32_t in the call to setup will result in an overflow. At least on x86_64, this overflow is possible: static_assert(std::numeric_limits<size_t>::max() / 32 <= std::numeric_limits<uint32_t>::max()); static_assert(std::numeric_limits<size_t>::max() / 4 <= std::numeric_limits<uint32_t>::max()); This commit detects such cases and signals to callers that the `size_t bytes` input is too large.