diff --git a/include/fmt/format-inl.h b/include/fmt/format-inl.h
index bb3f7ea6..740ec21b 100644
--- a/include/fmt/format-inl.h
+++ b/include/fmt/format-inl.h
@@ -129,8 +129,8 @@ inline void fwrite_all(const void* ptr, size_t count, FILE* stream) {
 
 template <typename Char>
 FMT_FUNC auto thousands_sep_impl(locale_ref loc) -> thousands_sep_result<Char> {
-  auto loc_copy = loc.get<locale>();
-  auto&& facet = use_facet<numpunct<Char>>(loc_copy);
+  auto locale = loc.get<detail::locale>();  // Workaround a gcc 14 bug (#4876).
+  auto&& facet = use_facet<numpunct<Char>>(locale);
   auto grouping = facet.grouping();
   auto thousands_sep = grouping.empty() ? Char() : facet.thousands_sep();
   return {std::move(grouping), thousands_sep};
diff --git a/include/fmt/xchar.h b/include/fmt/xchar.h
index aae2a9c9..69e47db2 100644
--- a/include/fmt/xchar.h
+++ b/include/fmt/xchar.h
@@ -46,8 +46,8 @@ using format_string_char_t = typename format_string_char<S>::type;
 inline auto write_loc(basic_appender<wchar_t> out, loc_value value,
                       const format_specs& specs, locale_ref loc) -> bool {
 #if FMT_USE_LOCALE
-  auto loc_copy = loc.get<std::locale>();
-  auto& numpunct = std::use_facet<std::numpunct<wchar_t>>(loc_copy);
+  auto locale = loc.get<std::locale>();  // Workaround a gcc 14 bug (#4876).
+  auto& numpunct = std::use_facet<std::numpunct<wchar_t>>(locale);
   auto separator = std::wstring();
   auto grouping = numpunct.grouping();
   if (!grouping.empty()) separator = std::wstring(1, numpunct.thousands_sep());