An expression which may be zero is used as a divisor in floating-point arithmetic.

Defect 57187 (STATIC_C)
Checker DIVIDE_BY_ZERO (subcategory float_divisor)
File: /src/mongo/db/fts/fts_spec_legacy.cpp
Function mongo::fts::FTSSpec::_scoreStringV1(const mongo::fts::FTSSpec::Tools &, mongo::StringData, std::unordered_map<std::basic_string<char, std::char_traits<char>, std::allocator<char>>, double, std::hash<std::basic_string<char, std::char_traits<char>, std::allocator<char>>>, std::equal_to<std::basic_string<char, std::char_traits<char>, std::allocator<char>>>, std::allocator<std::pair<const std::basic_string<char, std::char_traits<char>, std::allocator<char>>, double>>> *, double) const
/src/mongo/db/fts/fts_spec_legacy.cpp, line: 73
Assigning: "numTokens" = "0U".

        unsigned numTokens = 0;

/src/mongo/db/fts/fts_spec_legacy.cpp, line: 107
In expression "0.5 * data.count / numTokens", division by expression "numTokens" which may be zero has undefined behavior.

            double coeff = (0.5 * data.count / numTokens) + 0.5;