Workaround to MSVC bug (#2474) (#2476)

ee63f5f0 · Vladislav Shchapov · GitHub · 1aaf72fb · ee63f5f0
Unverified Commit ee63f5f0 authored Aug 31, 2021 by Vladislav Shchapov Committed by GitHub Aug 31, 2021
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include/fmt/core.h include/fmt/core.h +4 -4

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--- a/include/fmt/core.h
+++ b/include/fmt/core.h
@@ -1371,10 +1371,10 @@ template <typename Context> struct arg_mapper {
  }

  template <typename T, typename U = remove_cvref_t<T>>
-  using formattable =
-      bool_constant<is_const_formattable<U, Context>() ||
-                    !std::is_const<remove_reference_t<T>>::value ||
-                    has_fallback_formatter<U, char_type>::value>;
+  struct formattable
+      : bool_constant<is_const_formattable<U, Context>() ||
+                      !std::is_const<remove_reference_t<T>>::value ||
+                      has_fallback_formatter<U, char_type>::value> {};

 #if FMT_MSC_VER != 0 && FMT_MSC_VER < 1910
  // Workaround a bug in MSVC.