support std::optional holding cv-qualified types (#4562)

Fixes #4561
2025-10-03 14:40:44 +03:00
parent 27ea09836a
commit 486e7ba579
2 changed files with 2 additions and 1 deletions
--- a/test/std-test.cc
+++ b/test/std-test.cc
@@ -145,6 +145,7 @@ TEST(std_test, optional) {
  EXPECT_FALSE((fmt::is_formattable<unformattable>::value));
  EXPECT_FALSE((fmt::is_formattable<std::optional<unformattable>>::value));
  EXPECT_TRUE((fmt::is_formattable<std::optional<int>>::value));
+  EXPECT_TRUE((fmt::is_formattable<std::optional<const int>>::value));
 #endif
 }