std::string GetIdFromImeSpec(const std::string& ime_spec) {
  static const std::string kPrefix("m17n:");
  return base::StartsWith(ime_spec, kPrefix, base::CompareCase::SENSITIVE)
             ? ime_spec.substr(kPrefix.length())
             : std::string();
}

The product reads data past the end, or before the beginning, of the intended buffer.