Avoid undefined symbols with mingw-w64 (#2692)

Fixes issue #2691

Avoid undefined symbols with mingw-w64 (#2692)
Fixes issue #2691
fc1783fc · Richard Berger · GitHub · 1b193e7b · fc1783fc
Unverified Commit fc1783fc authored Jan 03, 2022 by Richard Berger Committed by GitHub Jan 03, 2022
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include/fmt/chrono.h include/fmt/chrono.h +1 -1

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--- a/include/fmt/chrono.h
+++ b/include/fmt/chrono.h
@@ -1082,7 +1082,7 @@ template <typename OutputIt, typename Char> class tm_writer {
  }
  template <typename T, FMT_ENABLE_IF(!has_member_data_tm_gmtoff<T>::value)>
  void format_utc_offset_impl(const T& tm) {
-#if defined(_WIN32)
+#if defined(_WIN32) && defined(_UCRT)
 #  if FMT_USE_TZSET
    tzset_once();
 #  endif