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Replace mapping.emplace(K, V) with call to mapping.find(K) #763

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Replace mapping.emplace(K, V) with call to mapping.find(K) #763

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9 changes: 7 additions & 2 deletions include/cereal/details/helpers.hpp
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Original file line number Diff line number Diff line change
Expand Up @@ -412,8 +412,13 @@ namespace cereal

std::uint32_t find( std::size_t hash, std::uint32_t version )
{
const auto result = mapping.emplace( hash, version );
return result.first->second;
auto it = mapping.find(hash);
if (it == mapping.end()) {
mapping.emplace(hash, version);
return version;
}
else
return it->second;
}
}; // struct Versions
} // namespace detail
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