example: fix compilation for Clang 13

2021-03-15 14:26:46 +01:00
parent f228ddfd77
commit dca553ed96
1 changed files with 1 additions and 1 deletions
@@ -36,7 +36,7 @@ void to_stream(std::basic_ostream<CharT, Traits>& os, const quantity<D, U, Rep>&
 {
  os << q.count();
  constexpr auto symbol = detail::unit_text<D, U>();
-  if constexpr (symbol.standard().size()) {
+  if constexpr (bool(symbol.standard().size())) {
    os << " " << symbol.standard();
  }
 }