Added missing std::declval for non-default-constructible types

fmtlib · Jun 17, 2024 · bd94b30 · bd94b30
1 parent c00149f
commit bd94b30
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/include/fmt/ranges.h b/include/fmt/ranges.h
@@ -621,8 +621,8 @@ struct formatter<
   using range_type = detail::maybe_const_range<R>;
   using string_type = conditional_t<
       std::is_constructible<detail::std_string_view<Char>,
-                            decltype(detail::range_begin(R())),
-                            decltype(detail::range_end(R()))>::value,
+                            decltype(detail::range_begin(std::declval<R>())),
+                            decltype(detail::range_end(std::declval<R>()))>::value,
       detail::std_string_view<Char>, std::basic_string<Char>>;
 
   formatter<string_type, Char> underlying_;