Address MSVC C4127 warning when formatting non unicode tm (#4299)

Use `const_check` to silence visual studio's W4 level diagnostic regarding conditional expressions being constants, addresses #4294
fmtlib · Jan 8, 2025 · 3f864a4 · 3f864a4
1 parent 093b39c
commit 3f864a4
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/include/fmt/chrono.h b/include/fmt/chrono.h
@@ -364,7 +364,7 @@ void write_codecvt(codecvt_result<CodeUnit>& out, string_view in,
 template <typename OutputIt>
 auto write_encoded_tm_str(OutputIt out, string_view in, const std::locale& loc)
     -> OutputIt {
-  if (detail::use_utf8 && loc != get_classic_locale()) {
+  if (const_check(detail::use_utf8) && loc != get_classic_locale()) {
     // char16_t and char32_t codecvts are broken in MSVC (linkage errors) and
     // gcc-4.
 #if FMT_MSC_VERSION != 0 ||  \