message: Fail if ToString of comparisons is called during initialization.
diff: @@ -33,6 +33,8 @@ std::string ComparisonDirectionToString(Comparison::Direction direction) {
  return "LE";
  case Comparison::Direction::kLt:
  return "LT";
  + default:
  + LOG(FATAL) << "Attempted to print uninitialized comparison direction";
  }
  }
  @@ -79,6 +81,8 @@ std::string ComparisonTypeToString(Comparison::Type type) {
  return "SIGNED";
  case Comparison::Type::kUnsigned:
  return "UNSIGNED";
  + default:
  + LOG(FATAL) << "Attempted to print incomplete comparison type";
  }
  }
  