fix: Make basic_format_arg::visit() const (#4043)

fmtlib · Jul 1, 2024 · c4f6fa7 · c4f6fa7
1 parent 10f12fd
commit c4f6fa7
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/include/fmt/base.h b/include/fmt/base.h
@@ -1760,7 +1760,7 @@ template <typename Context> class basic_format_arg {
    * `vis(value)` will be called with the value of type `double`.
    */
   template <typename Visitor>
-  FMT_CONSTEXPR auto visit(Visitor&& vis) -> decltype(vis(0)) {
+  FMT_CONSTEXPR auto visit(Visitor&& vis) const -> decltype(vis(0)) {
     switch (type_) {
     case detail::type::none_type:
       break;