Class LogNullGuard

base/src/main/cpp/include/base/logging.h:385–387

// when writing the failure message.
template <typename T>
struct LogNullGuard {
  static const T& Guard(const T& v) { return v; }
};
template <>
struct LogNullGuard<std::nullptr_t> {
  static const char* Guard(const std::nullptr_t&) { return "(null)"; }