Don't convert scoped enums to integers

test/core-test.cc

@@ -737,6 +737,8 @@ struct convertible_to_pointer {
   operator const int*() const { return nullptr; }
 };
 
+enum class test_scoped_enum {};
+
 TEST(core_test, is_formattable) {
   static_assert(fmt::is_formattable<signed char*>::value, "");
   static_assert(fmt::is_formattable<unsigned char*>::value, "");
@@ -777,6 +779,7 @@ TEST(core_test, is_formattable) {
 
   static_assert(!fmt::is_formattable<int(s::*)>::value, "");
   static_assert(!fmt::is_formattable<int (s::*)()>::value, "");
+  static_assert(!fmt::is_formattable<test_scoped_enum>::value, "");
 }
 
 TEST(core_test, format) { EXPECT_EQ(fmt::format("{}", 42), "42"); }

test/ranges-test.cc

@@ -190,7 +190,7 @@ TEST(ranges_test, range) {
   EXPECT_EQ(fmt::format("{}", z), "[0, 0, 0]");
 }
 
-enum class test_enum { foo };
+enum test_enum { foo };
 
 TEST(ranges_test, enum_range) {
   auto v = std::vector<test_enum>{test_enum::foo};